MediaTrackSupportedConstraints - Web APIs
the mediatracksupportedconstraints dictionary establishes the list of constrainable properties recognized by the user agent or browser in its implementation of the mediastreamtrack object. an object conforming to mediatracksupportedconstraints is returned by mediadevices.getsupportedconstraints(). because of the way interface definitions in webidl work, if a constraint is requested but not supported, no error will occur. ...
... an actual constraint set is described using an object based on the mediatrackconstraints dictionary. to learn more about how constraints work, see capabilities, constraints, and settings. ...
... accepted. an actual constraint set is described using an object based on the mediatrackconstraints dictionary. to learn more about how constraints work, see capabilities, constraints, and settings. properties some combination—but not necessarily all—of the following properties will exist on the object. autogaincontrol a boolean whose value is true if the autogaincontrol constraint is supported in the current environment. width a boolean value whose value is true if the width constraint is supported in the current environment. height a boolean value whose value is true if the height constraint is supported in the current environment. aspectratio a boolean value whose value is true if the aspectratio constraint is supported in the current environment. framerate a boolean va...
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MediaSource.isTypeSupported() - Web APIs
this may include the codecs parameter to provide added details about the codecs used within the file. return value a boolean which is true if the browser feels that it can probably play media of the specified type. ...
...this may include the codecs parameter to provide added details about the codecs used within the file. return value a boolean which is true if the browser feels that it can probably play media of the specified type. ...
...this may include the codecs parameter to provide added details about the codecs used within the file. return value a boolean which is true if the browser feels that it can probably play media of the specified type. ...
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Intl.DateTimeFormat.supportedLocalesOf() - JavaScript
for the general form of the locales argument, see the intl page. options optional. ...
...for the general form of the locales argument, see the intl page. options optional. ...
...for the general form of the locales argument, see the intl page. options optional. an object that may have the following property: localematcher the locale matching algorithm to use. ...
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Intl.RelativeTimeFormat.supportedLocalesOf() - JavaScript
for the general form of the locales argument, see the intl page. options optional. ...
...for the general form of the locales argument, see the intl page. options optional. ...
...for the general form of the locales argument, see the intl page. options optional. an object that may have the following property: localematcher the locale matching algorithm to use. ...
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super - JavaScript
the super keyword is used to access and call functions on an object's parent. the super.prop and super[expr] expressions are valid in any method definition in both classes and object literals. syntax super([arguments]); // calls the parent constructor. super.functiononparent([arguments]); description when used in a constructor, the super keyword appears alone and must be used before the this keyword is used. the super keyword can also be used to call functions on a parent object. examples using super in classes this code snippet is taken from the classes sample (live demo). here super() is called to avoid duplicating the constructor parts' that are common between rectangle and square. class rectangle { constructor(height, width) { this.name = 'rectangle'; this.height = he...
... class rectangle { constructor(height, width) { this.name = 'rectangle'; this.height = height; this.width = width; } sayname() { console.log('hi, i am a ', this.name + '.'); } get area() { return this.height * this.width; } set area(value) { this._area = value; } } class square extends rectangle { constructor(length) { this.height; // referenceerror, super needs to be called first! // here, it calls the parent class's constructor with lengths // provided for the rectangle's width and height super(length, length); // note: in derived classes, super() must be called before you // can use 'this'. leaving this out will cause a reference error. this.name = 'square'; } } super-calling static methods you are also able to ca...
...needs to be called first! ...
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CSSSupportsRule - Web APIs
it has no specific methods. ...
...it has no specific methods. ...
...it has no specific methods. ...
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MediaTrackSettings.noiseSuppression - Web APIs
this feature is typically used on microphones, although it is technically possible it could be provided by other input sources as well. ...
...this feature is typically used on microphones, although it is technically possible it could be provided by other input sources as well. ...
...perty is a boolean value whose value indicates whether or not noise suppression technology is enabled on an audio track. this lets you determine what value was selected to comply with your specified constraints for this property's value as described in the mediatrackconstraints.noisesuppression property you provided when calling either getusermedia() or mediastreamtrack.applyconstraints(). noise suppression automatically filters the audio to remove background noise, hum caused by equipment, and the like from the sound before delivering it to your code. this feature is typically used on microphones, although it is technically possible it could be provided by other input sources as well. ...
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Detecting CSS animation support - CSS: Cascading Style Sheets
css animations make it possible to do creative animations of content using nothing but css. however, there are likely to be times when this feature isn't available, and you may wish to handle that case by using javascript code to simulate a similar effect. this article, based on this blog post by chris heilmann, demonstrates a technique for doing this. ...
...o creative animations of content using nothing but css. however, there are likely to be times when this feature isn't available, and you may wish to handle that case by using javascript code to simulate a similar effect. this article, based on this blog post by chris heilmann, demonstrates a technique for doing this. ...
...f( animation === false ) { for( var i = 0; i < domprefixes.length; i++ ) { if( elem.style[ domprefixes[i] + 'animationname' ] !== undefined ) { pfx = domprefixes[ i ]; animationstring = pfx + 'animation'; keyframeprefix = '-' + pfx.tolowercase() + '-'; animation = true; break; } } } for starters we define a few variables. ...
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Intl.Collator.supportedLocalesOf() - JavaScript
for the general form of the locales argument, see the intl page. options optional. an object that may have the following property: localematcher the locale matching algorithm to use. ...
...for the general form of the locales argument, see the intl page. options optional. an object that may have the following property: localematcher the locale matching algorithm to use. ...
...form of the locales argument, see the intl page. options optional. an object that may have the following property: localematcher the locale matching algorithm to use. possible values are "lookup" and "best fit"; the default is "best fit". for information about this option, see the intl page. ...
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Intl.NumberFormat.supportedLocalesOf() - JavaScript
for the general form of the locales argument, see the intl page. options optional. ...
...for the general form of the locales argument, see the intl page. options optional. ...
...for the general form of the locales argument, see the intl page. options optional. an object that may have the following property: localematcher the locale matching algorithm to use. ...
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String.prototype.sup() - JavaScript
the sup() method creates a <sup> html element that causes a string to be displayed as superscript. syntax str.sup() return value a string containing a <sup> html element. description the sup() method embeds a string in a <sup> tag: "^str". ...
... the sup() method creates a <sup> html element that causes a string to be displayed as superscript. syntax str.sup() return value a string containing a <sup> html element. description the sup() method embeds a string in a <sup> tag: "^str". ...
... the sup() method creates a <sup> html element that causes a string to be displayed as superscript. syntax str.sup() return value a string containing a <sup> html element. description the sup() method embeds a string in a <sup> tag: "^str". ...
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Supporting search suggestions in search plugins - Archive of obsolete content
firefox supports search suggestions in opensearch plugins; as the user types in the search bar, firefox queries the url specified by the search plugin to fetch live search suggestions. once the list has been retrieved, it's displayed in a popup box that appears under the search bar, which lets the user select a suggested search term. if the user continues to type, a new set of suggestions is requested from the search engine, and the displayed list is refreshed. implementing suggestion support in the search plugin to support search suggestions, a search plugin needs to define an extra <url> element with its type attribute set to "application/x-suggestions+json". ...
...r select a suggested search term. if the user continues to type, a new set of suggestions is requested from the search engine, and the displayed list is refreshed. implementing suggestion support in the search plugin to support search suggestions, a search plugin needs to define an extra <url> element with its type attribute set to "application/x-suggestions+json". ...
...ch bar, then pauses, firefox inserts "fir" in place of {searchterms} and queries that url: <url type="application/x-suggestions+json" template="http://ff.search.yahoo.com/gossip?output=fxjson&command=fir"/> the results are used to construct the suggestion list box. see creating opensearch plugins for firefox to learn more about how to implement a search plugin. implementing search suggestion support on the server the majority of the work in handling search suggestions is actually implemented on the server side. if you're a web site designer, and want to support search suggestions, you need to implement support for returning the suggestions in javascript object notation (json) given a search term. when the browser wants to fetch possible matches for a search term, it then sends an http ...
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Supporting private browsing mode - Archive of obsolete content
firefox 3.5 introduced private browsing mode, in which potentially private information is not recorded. this includes cookies, history information, download information, and so forth. when private browsing mode is enabled, temporary, databases are created to be used for cookies and local storage; these databases are thrown away when private browsing mode is turned off, and the regular databases are re-activated. the temporary cookie and local storage databases start out empty. ...
... the above example, we only save the user's private information if not in private browsing mode. note: private browsing mode may only be detected by chrome code, such as extensions; web content cannot detect whether or not private browsing is in effect. detecting whether private browsing mode is permanent requires gecko 2.0(firefox 4 / thunderbird 3.3 / seamonkey 2.1) firefox 4 added support for having private browsing mode permanently enabled. the theme looks different in this scenario. to determine whether or not the browser is permanently in private browsing mode, you can look at the privatebrowsingmode attribute on the document root. its value is "permanent" if private browsing is permanently enabled for the session, "temporary" if private browsing is temporarily enabled, or ...
... it will simply always report that private browsing is off, and will never call any registered watcher functions. using the helper the helper described above is very easy to use. simply instantiate the helper, then you can use its inprivatebrowsing flag to detect whether or not private browsing is currently enabled, as shown here: var listener = new privatebrows...
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nsISupports proxies
on arbitrary threads, and compiled code can use compiled runnable to achieve the same effect in a much simpler manner. for more information about alternatives, see making cross-thread calls using runnables. the following interface is now obsolete: nsiproxyobjectmanager. about xpcom proxies a proxy, in this context, is a stub object which enables a method of any class which is derived from nsisupports and has a typelib to be called on any in-process thread. the main reason for nsisupports proxies is that javascript and ui are on a single thread. when one is busy, the other is blocked. a good example of this is the old install.js scripts that were used in xpinstall in older mozilla versions. they from the majority of javascript code, which is small and can be quickly run. xpinstall insta...
... product would appear frozen until the script was complete. this is definitely bad. because of this, xpinstall was moved to its own thread. now xpinstall can do its installations while the product renders, but now xpinstall can not access ui elements such as a progress meter or a confirmation dialog. how can a separate non-ui thread act as if it was on the ui thread? herein lays the utility of nsisupports proxies. i believe that other people working on mozilla need similar solutions. in this document, i will try to explain how to use nsisupports proxies. how do i use it? the api has changed in mozilla 1.9, but the prose below hasn't been updated yet. see xpcom/proxy/public/nsiproxyobjectmanager.idl for the updated interface and its documentation. see also . from a users point of view, y...
...9, but the prose below hasn't been updated yet. see xpcom/proxy/public/nsiproxyobjectmanager.idl for the updated interface and its documentation. see also . from a users point of view, you need only to look at the nsiproxyobjectmanager. it has two entry points: ns_imethod getproxyforobject(nsieventqueue *destqueue, const nsiid & iid, nsisupports *object, print32 proxytype, void * *result); ns_imethod getproxy(nsieventqueue *destqueue, const nsiid & cid, nsisupports *aouter, const nsiid & iid, print32 proxytype, void * *result); the two apis are essentially the same. the only...
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CSS.supports() - Web APIs
the css.supports() method returns a boolean value indicating if the browser supports a given css feature, or not. syntax css.supports(propertyname, value); css.supports(supportcondition); parameters there are two distinct sets of parameters. the first one allows to test the support of a pair property-value: propertyname a domstring containing the name of the css property to check. value a domstring containing the value of the css property to check. the second syntax takes one parameter matching the condition of @supports: supportcondition a domstring containing the condition to check. return value true if the browser supports the rule, otherwise false. ...
...y-value: propertyname a domstring containing the name of the css property to check. value a domstring containing the value of the css property to check. the second syntax takes one parameter matching the condition of @supports: supportcondition a domstring containing the condition to check. return value true if the browser supports the rule, otherwise false. ...
... of the css property to check. value a domstring containing the value of the css property to check. the second syntax takes one parameter matching the condition of @supports: supportcondition a domstring containing the condition to check. return value true if the browser supports the rule, otherwise false. ...
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MediaDevices.getSupportedConstraints() - Web APIs
the getsupportedconstraints() method of the mediadevices interface returns an object based on the mediatracksupportedconstraints dictionary, whose member fields each specify one of the constrainable properties the user agent understands. syntax var supportedconstraints = navigator.mediadevices.getsupportedconstraints(); parameters none. return value a new object based on the mediatracksupportedconstraints dictionary listing the constraints supported by the user agent. because only constraints supported by the user agent are included in the list, each of these boolean properties has the value true. example this example outputs a list of the constraints supported by your browser. ...
... return value a new object based on the mediatracksupportedconstraints dictionary listing the constraints supported by the user agent. because only constraints supported by the user agent are included in the list, each of these boolean properties has the value true. example this example outputs a list of the constraints supported by your browser. ...
...e included in the list, each of these boolean properties has the value true. example this example outputs a list of the constraints supported by your browser. ...
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MediaTrackSupportedConstraints.displaySurface - Web APIs
the mediatracksupportedconstraints dictionary's displaysurface property indicates whether or not the displaysurface constraint is supported by the user agent and the device on which the content is being used. the supported constraints list is obtained by calling navigator.mediadevices.getsupportedconstraints(). syntax isdisplaysurfacesupported = supportedconstraints.displaysurface; value a boolean value which is true if the displaysurface constraint is supported by the device and user agent. example this method sets up the constraints object specifying the options for the call to getdisplaymedia(). it adds the displaysurface constraint (requesting that only full-screen sharing be allowed) only if it is known to be supported by the browser. capturing is then started by calling getdisp...
...straints object specifying the options for the call to getdisplaymedia(). it adds the displaysurface constraint (requesting that only full-screen sharing be allowed) only if it is known to be supported by the browser. capturing is then started by calling getdisplaymedia() and attaching the returned stream to the video element referenced by the variable videoelem. ...
...ll to getdisplaymedia(). it adds the displaysurface constraint (requesting that only full-screen sharing be allowed) only if it is known to be supported by the browser. capturing is then started by calling getdisplaymedia() and attaching the returned stream to the video element referenced by the variable videoelem. ...
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MediaTrackSupportedConstraints.volume - Web APIs
the mediatracksupportedconstraints dictionary's volume property is a read-only boolean value which is present (and set to true) in the object returned by mediadevices.getsupportedconstraints() if and only if the user agent supports the volume constraint. if the constraint isn't supported, it's not included in the list, so this value will never be false. you can access the supported constraints dictionary by calling navigator.mediadevices.getsupportedconstraints(). syntax volumeconstraintsupported = supportedconstraintsdictionary.volume; value this property is present in the dictionary (and its value is always true) if the user agent supports the volume constraint. ...
...er be false. you can access the supported constraints dictionary by calling navigator.mediadevices.getsupportedconstraints(). syntax volumeconstraintsupported = supportedconstraintsdictionary.volume; value this property is present in the dictionary (and its value is always true) if the user agent supports the volume constraint. if the property isn't present, this property is missing from the supported constraints dictionary, and you'll get undefined if you try to look at its value. ...
...supports the volume constraint. if the property isn't present, this property is missing from the supported constraints dictionary, and you'll get undefined if you try to look at its value. ...
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Intl.DisplayNames.supportedLocalesOf() - JavaScript
the intl.displaynames.supportedlocalesof() method returns an array containing those of the provided locales that are supported in date and time formatting without having to fall back to the runtime's default locale. syntax intl.displaynames.supportedlocalesof(locales[, options]) parameters locales a string with a bcp 47 language tag, or an array of such strings. for the general form of the locales argument, see the intl page. options optional. an object that may have the following property: localematcher the locale matching algorithm to use. possible values are "lookup" and "best fit"; the default is "best fit". for information about this option, see the intl page. ...
...form of the locales argument, see the intl page. options optional. an object that may have the following property: localematcher the locale matching algorithm to use. possible values are "lookup" and "best fit"; the default is "best fit". for information about this option, see the intl page. ...
...it". for information about this option, see the intl page. return value an array of strings representing a subset of the given locale tags that are supported in date and time formatting without having to fall back to the runtime's default locale. description returns an array with a subset of the language tags provided in locales. the language tags returned are those for which the runtime supports a locale in date and time formatting that the locale matching algorithm used considers a match, so that it wouldn't have to fall back to the default locale. ...
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Intl.ListFormat.supportedLocalesOf() - JavaScript
the intl.listformat.supportedlocalesof() method returns an array containing those of the provided locales that are supported in date and time formatting without having to fall back to the runtime's default locale. syntax intl.listformat.supportedlocalesof(locales[, options]) parameters locales a string with a bcp 47 language tag, or an array of such strings. for the general form of the locales argument, see the intl page. options optional. an object that may have the following property: localematcher the locale matching algorithm to use. possible values are "lookup" and "best fit"; the default is "best fit". for information about this option, see the intl page. ...
...form of the locales argument, see the intl page. options optional. an object that may have the following property: localematcher the locale matching algorithm to use. possible values are "lookup" and "best fit"; the default is "best fit". for information about this option, see the intl page. ...
...it". for information about this option, see the intl page. return value an array of strings representing a subset of the given locale tags that are supported in date and time formatting without having to fall back to the runtime's default locale. description returns an array with a subset of the language tags provided in locales. the language tags returned are those for which the runtime supports a locale in date and time formatting that the locale matching algorithm used considers a match, so that it wouldn't have to fall back to the default locale. ...
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Internationalized Domain Names (IDN) Support in Mozilla Browsers
an internationalized domain name (idn) is a domain/host name which uses non-ascii characters. until recently domain names allowed only a subset of 7-bit ascii characters. as the internet has spread to non-english speaking people around the world, it has become increasingly clear that forcing them to use domain names written only in a subset of the latin alphabet is not ideal. many of the european languages use the basic latin alphabet with additional accented characters for writing but they were not able to use them in domain names. ...
...for the past few years, there have been a flurry of ietf activities to standardize the protocols involved in domain names to handle non-ascii characters. in march of 2003, three important rfc's were approved by ietf. (cf. rfc's 3490, 3491, 3492.) these new rfc's now make it possible for domain name servers to register non-ascii domain names and application/client vendors to implement standardized support for handling non-ascii characters in domain names. how idn works when a browser sees a host name such as http://developer.mozilla.org, it passes a request to the dns resolver service (usually built into an os), which in turn sends a request to a nearest domain name server to return an ip address that corresponds to the host name. this ip address is then used to connect to the web server in ...
...ble encoding (ace) schemes proposed but an agreement was reached eventually to standardize on a type of ace called "punycode". this is defined in rfc 3492 (punycode: a bootstring encoding of unicode for internationalized domain names in applications (idna)). the punycode proposal uses only restricted ascii characters and numbers (a-z0-9) and a hyphen (-). it was shown to be language independent, superior in compression, compact in code size, round-trip safe, and superior for encoding chinese/japanese/korean characters. the final step of the process is the affixing of the ace prefix to the output string from the nameprep/stringprep and punycode processing. since the punycode contains only ascii characters, it is possible that an output may, though unlikely, coincide with existing domain name...
... using the right-mouse click menu new > boolean. the name of the preference is: network.idn_testbed. the value should be "true". now access idn sites under the .com and .net top domains. you should succeed in reaching the sample sites. don't forget to set the value of these preferences to "default" once you are finished with testing! caveats and conclusions netscape 7.1/mozilla 1.4 has solid support for internationalized domain names and is the first browser with built-in support for new rfc's for idn established by ietf. this means that there is no longer any need to use a plug-in to process non-ascii domain names. netscape/mozilla's support for idn is not without some bugs. one notable bug is that non-ascii names are not always displayed correctly in some ui areas such as preference p...

nsSupportsWeakReference
« xpcom api reference summary inherit from this c++ class to add canonical support for nsisupportsweakreference. see weak reference for detailed description of weak references. #include "nsweakreference.h" class nssupportsweakreference { ... }; remarks in addition to inheriting from this class, you will need to ensure that your nsisupports::queryinterface implementation exposes nsisupportsweakreference as a supported interface. to use this class, you must link your component or application against the xpcom glue library. example code // supporting weak references to a hypothetical implementation // of the nsifoo interface... ...
...ur nsisupports::queryinterface implementation exposes nsisupportsweakreference as a supported interface. to use this class, you must link your component or application against the xpcom glue library. example code // supporting weak references to a hypothetical implementation // of the nsifoo interface... #include "nsweakreference.h" #include "nsifoo.h" class myfoo : public nsifoo, public nssupportsweakreference { public: ns_decl_isupports ns_decl_nsifoo ... }; ns_impl_isupports2(myfoo, nsifoo, nsisupportsweakreference) ... ...
...n against the xpcom glue library. example code // supporting weak references to a hypothetical implementation // of the nsifoo interface... #include "nsweakreference.h" #include "nsifoo.h" class myfoo : public nsifoo, public nssupportsweakreference { public: ns_decl_isupports ns_decl_nsifoo ... }; ns_impl_isupports2(myfoo, nsifoo, nsisupportsweakreference) ... ...
...ry. example code // supporting weak references to a hypothetical implementation // of the nsifoo interface... #include "nsweakreference.h" #include "nsifoo.h" class myfoo : public nsifoo, public nssupportsweakreference { public: ns_decl_isupports ns_decl_nsifoo ... }; ns_impl_isupports2(myfoo, nsifoo, nsisupportsweakreference) ... ...

MediaRecorder.isTypeSupported - Web APIs
if the value is false, the user agent is incapable of recording the specified format. ...
...if the value is false, the user agent is incapable of recording the specified format. ...
...if the value is false, the user agent is incapable of recording the specified format. ...
.... if the value is false, the user agent is incapable of recording the specified format. example var types = ["video/webm", "audio/webm", "video/webm\;codecs=vp8", "video/webm\;codecs=daala", "video/webm\;codecs=h264", "audio/webm\;codecs=opus", "video/mpeg"]; for (var i in types) { console.log( "is " + types[i] + " supported? " + (mediarecorder.istypesupported(types[i]) ? "maybe!" : "nope :(")); } specifications specification status comment mediastream recordingthe definition of 'istypesupported()' in that specification. working draft initial definition. ...

MediaTrackSupportedConstraints.autoGainControl - Web APIs
the mediatracksupportedconstraints dictionary's autogaincontrol property is a read-only boolean value which is present (and set to true) in the object returned by mediadevices.getsupportedconstraints() if and only if the user agent supports the autogaincontrol constraint. if the constraint isn't supported, it's not included in the list, so this value will never be false. you can access the supported constraints dictionary by calling navigator.mediadevices.getsupportedconstraints(). the autogaincontrol constraint indicates whether or not the browser offers the ability to automatically control the gain (volume) on media tracks; this obviously is contingent on whether or not the individual device supports automatic gain control as well; it's typically a feature provided by microphones. synta...
...ts dictionary by calling navigator.mediadevices.getsupportedconstraints(). the autogaincontrol constraint indicates whether or not the browser offers the ability to automatically control the gain (volume) on media tracks; this obviously is contingent on whether or not the individual device supports automatic gain control as well; it's typically a feature provided by microphones. syntax autogainsupported = supportedconstraintsdictionary.autogaincontrol; value this property is present in the dictionary (and its value is always true) if the user agent supports the autogaincontrol constraint. if the property isn't present, this property is missing from the supported constraints dictionary, and you'll get undefined if you try to look at its value. example this example simply displays whethe...
...traintsdictionary.autogaincontrol; value this property is present in the dictionary (and its value is always true) if the user agent supports the autogaincontrol constraint. if the property isn't present, this property is missing from the supported constraints dictionary, and you'll get undefined if you try to look at its value. example this example simply displays whether or not your browser supports the autogaincontrol constraint. ...
...pported constraints dictionary, and you'll get undefined if you try to look at its value. example this example simply displays whether or not your browser supports the autogaincontrol constraint. html content <div id="result"> </div> css content #result { font: 14px "arial", sans-serif; } javascript content let result = document.getelementbyid("result"); if (navigator.mediadevices.getsupportedconstraints().autogaincontrol) { result.innerhtml = "supported!"; } else { result.innerhtml = "not supported!"; } result specifications specification status comment media capture and streamsthe definition of 'autogaincontrol' in that specification. candidate recommendation initial specification. ...

MediaTrackSupportedConstraints.cursor - Web APIs
the mediatracksupportedconstraints dictionary's cursor property indicates whether or not the cursor constraint is supported by the user agent and the device on which the content is being used. the supported constraints list is obtained by calling navigator.mediadevices.getsupportedconstraints(). syntax iscursorsupported = supportedconstraints.cursor; value a boolean value which is true if the cursor constraint is supported by the device and user agent. example this method sets up the constraints object specifying the options for the call to getdisplaymedia(). it adds the cursor constraint only if it is known to be supported by the browser. capturing is then started by calling getdisplaymedia() and attaching the returned stream to the video element referenced by the variable videoelem...
...nd user agent. example this method sets up the constraints object specifying the options for the call to getdisplaymedia(). it adds the cursor constraint only if it is known to be supported by the browser. capturing is then started by calling getdisplaymedia() and attaching the returned stream to the video element referenced by the variable videoelem. ...
...constraints object specifying the options for the call to getdisplaymedia(). it adds the cursor constraint only if it is known to be supported by the browser. capturing is then started by calling getdisplaymedia() and attaching the returned stream to the video element referenced by the variable videoelem. ...
...ported by the browser. capturing is then started by calling getdisplaymedia() and attaching the returned stream to the video element referenced by the variable videoelem. async function capturewithcursor() { let supportedconstraints = navigator.mediadevices.getsupportedconstraints(); let displaymediaoptions = { video: { displaysurface: "browser" }, audio: false; }; if (supportedconstraints.cursor) { displaymediaoptions.video.cursor = "always"; } try { videoelem.srcobject = await navigator.mediadevices.getdisplaymedia(displaymediaoptions); } catch(err) { /* handle the error */ } } specifications specification status comment screen capturethe definition of 'mediatracksupportedconstraints.cursor' in that specification. ...

MediaTrackSupportedConstraints.height - Web APIs
the mediatracksupportedconstraints dictionary's height property is a read-only boolean value which is present (and set to true) in the object returned by mediadevices.getsupportedconstraints() if and only if the user agent supports the height constraint. if the constraint isn't supported, it's not included in the list, so this value will never be false. you can access the supported constraints dictionary by calling navigator.mediadevices.getsupportedconstraints(). syntax heightconstraintsupported = supportedconstraintsdictionary.height; value this property is present in the dictionary (and its value is always true) if the user agent supports the height constraint. ...
...er be false. you can access the supported constraints dictionary by calling navigator.mediadevices.getsupportedconstraints(). syntax heightconstraintsupported = supportedconstraintsdictionary.height; value this property is present in the dictionary (and its value is always true) if the user agent supports the height constraint. if the property isn't present, this property is missing from the supported constraints dictionary, and you'll get undefined if you try to look at its value. ...
... candidate recommendation initial specification. ...
...resent, this property is missing from the supported constraints dictionary, and you'll get undefined if you try to look at its value. example html content <div id="result"> </div> css content #result { font: 14px "arial", sans-serif; } javascript content let result = document.getelementbyid("result"); if (navigator.mediadevices.getsupportedconstraints().height) { result.innerhtml = "supported!"; } else { result.innerhtml = "not supported!"; } result specifications specification status comment media capture and streamsthe definition of 'height' in that specification. candidate recommendation initial specification. ...

MediaTrackSupportedConstraints.width - Web APIs
the mediatracksupportedconstraints dictionary's width property is a read-only boolean value which is present (and set to true) in the object returned by mediadevices.getsupportedconstraints() if and only if the user agent supports the width constraint. if the constraint isn't supported, it's not included in the list, so this value will never be false. you can access the supported constraints dictionary by calling navigator.mediadevices.getsupportedconstraints(). syntax widthconstraintsupported = supportedconstraintsdictionary.width; value this property is present in the dictionary (and its value is always true) if the user agent supports the width constraint. ...
...never be false. you can access the supported constraints dictionary by calling navigator.mediadevices.getsupportedconstraints(). syntax widthconstraintsupported = supportedconstraintsdictionary.width; value this property is present in the dictionary (and its value is always true) if the user agent supports the width constraint. if the property isn't present, this property is missing from the supported constraints dictionary, and you'll get undefined if you try to look at its value. ...
... candidate recommendation initial specification. ...
...present, this property is missing from the supported constraints dictionary, and you'll get undefined if you try to look at its value. example html content <div id="result"> </div> css content #result { font: 14px "arial", sans-serif; } javascript content let result = document.getelementbyid("result"); if (navigator.mediadevices.getsupportedconstraints().width) { result.innerhtml = "supported!"; } else { result.innerhtml = "not supported!"; } result specifications specification status comment media capture and streamsthe definition of 'width' in that specification. candidate recommendation initial specification. ...

PaymentDetailsUpdate - Web APIs
displayitems optional an array of paymentitem objects, each describing one line item for the payment request. ...
... displayitems optional an array of paymentitem objects, each describing one line item for the payment request. ...
...e payment user interface after it has been instantiated. this can be done either by calling the paymentrequestupdateevent.updatewith() method or by using the paymentrequest.show() method's detailspromise parameter to provide a promise that returns a paymentdetailsupdate that updates the payment information before the user interface is even enabled for the first time. properties the paymentdetailsupdate dictionary is based on the paymentdetailsbase dictionary, and inherits its properties, which are included in the list below. displayitems optional an array of paymentitem objects, each describing one line item for the payment request. these represent the line items on a receipt or invoice. error optional a domstring specifying an error message to present to the user. when calling updat...
... of all of the items in displayitems. this is not calculated automatically. you must update this value yourself anytime the total amount due changes. this lets you have flexibility for how to handle things like tax, discounts, and other adjustments to the total price charged. specifications specification status comment payment request apithe definition of 'paymentdetailsupdate' in that specification. candidate recommendation initial definition. ...

WebGLRenderingContext.getSupportedExtensions() - Web APIs
] see also the webglrenderingcontext.getextension() method to get a specific extension object. webgl extensions extensions for the webgl api are registered in the webgl extension registry. ...
...] see also the webglrenderingcontext.getextension() method to get a specific extension object. webgl extensions extensions for the webgl api are registered in the webgl extension registry. ...
...] see also the webglrenderingcontext.getextension() method to get a specific extension object. webgl extensions extensions for the webgl api are registered in the webgl extension registry. ...
... recommendation initial definition. ...

Intl.PluralRules.supportedLocalesOf() - JavaScript
the intl.pluralrules.supportedlocalesof() method returns an array containing those of the provided locales that are supported in plural formatting without having to fall back to the runtime's default locale. syntax intl.pluralrules.supportedlocalesof(locales[, options]) parameters locales a string with a bcp 47 language tag, or an array of such strings. for the general form of the locales argument, see the intl page. options optional. an object that may have the following property: localematcher the locale matching algorithm to use. possible values are lookup and best fit; the default is best fit. for information about this option, see the intl page. ...
...neral form of the locales argument, see the intl page. options optional. an object that may have the following property: localematcher the locale matching algorithm to use. possible values are lookup and best fit; the default is best fit. for information about this option, see the intl page. return value an array of strings representing a subset of the given locale tags that are supported in plural formatting without having to fall back to the runtime's default locale. description returns an array with a subset of the language tags provided in locales. the language tags returned are those for which the runtime supports a locale in plural formatting that the locale matching algorithm used considers a match, so that it wouldn't have to fall back to the default locale. examp...
...lural formatting without having to fall back to the runtime's default locale. description returns an array with a subset of the language tags provided in locales. the language tags returned are those for which the runtime supports a locale in plural formatting that the locale matching algorithm used considers a match, so that it wouldn't have to fall back to the default locale. examples using supportedlocalesof() assuming a runtime that supports indonesian and german but not balinese in plural formatting, supportedlocalesof returns the indonesian and german language tags unchanged, even though pinyin collation is neither relevant to plural formatting nor used with indonesian, and a specialized german for indonesia is unlikely to be supported. note the specification of the lookup algorith...
...unlikely to be supported. note the specification of the lookup algorithm here — a best fit matcher might decide that indonesian is an adequate match for balinese since most balinese speakers also understand indonesian, and therefore return the balinese language tag as well. var locales = ['ban', 'id-u-co-pinyin', 'de-id']; var options = { localematcher: 'lookup' }; console.log(intl.pluralrules.supportedlocalesof(locales, options).join(', ')); // → "id-u-co-pinyin, de-id" specifications specification ecmascript internationalization api (ecma-402)the definition of 'intl.pluralrules.supportedlocalesof' in that specification. ...

SVG 1.1 Support in Firefox - SVG: Scalable Vector Graphics
element notes structure module svg implemented. currentscale and currenttranslate dom attributes are implemented, but there is no pan and zoom user interface. ...
... element notes structure module svg implemented. currentscale and currenttranslate dom attributes are implemented, but there is no pan and zoom user interface. ...
... element notes structure module svg implemented. currentscale and currenttranslate dom attributes are implemented, but there is no pan and zoom user interface. ...
.... feconvolvematrix implemented. fediffuselighting implemented. fedisplacementmap implemented. feflood implemented. fegaussianblur implemented. feimage implemented. document fragments (bug 455986) aren't supported in <svg:feimage>. femerge implemented. femergenode implemented. femorphology implemented. feoffset implemented. fespecularlighting implemented. fetile implemented. feturbulence ...

Extensions support in SeaMonkey 2 - Archive of obsolete content
starting with seamonkey 2 alpha 1 seamonkey supports toolkit/-style extensions. these type of extensions have many advantages for both users and developers compared to the old xpinstall/-style extensions. the basics to support seamonkey 2 as a target application, you need to add it to the list of target applications in the extension's install.rdf file. the code for that will look something like this: <em:targetapplication> <!-- seamonkey --> <description> <em:id>{92650c4d-4b8e-4d2a-b7eb-24ecf4f6b63a}</em:id> <em:minversion>2.0</em:minversion> <em:maxversion>2.*</em:maxversion> </description> </em:targetapplication> the install.js is not supported any more and should be removed. differences as compared to other toolkit/-based applications you need to overlay/open ...
...status bar, like this: <vbox id="browser-bottombox"> <something insertbefore="status-bar" /> </vbox> use the following technique to make your overlay work on both seamonkey 2 and firefox 3: <window id="main-window"> <vbox id="browser-bottombox" insertbefore="status-bar"> <something insertbefore="status-bar" /> </vbox> </window> thunderbird 3 gfolderdisplay api seamonkey 2.0 only supports a reduced set of methods: selectedcount selectedmessage selectedmessageisfeed selectedmessageisimap selectedmessageisnews selectedmessageisexternal selectedindices selectedmessages selectedmessageuris messagedisplay gmessagedisplay api seamonkey 2.0 only supports a reduced set of methods: displayedmessage visible javascript tweaks firefox supports some shorthand in vari...
...ssageisexternal selectedindices selectedmessages selectedmessageuris messagedisplay gmessagedisplay api seamonkey 2.0 only supports a reduced set of methods: displayedmessage visible javascript tweaks firefox supports some shorthand in various places. these are so commonly available that developers often forget that they are not built-ins. seamonkey on the other hand defaults to not support them so they either need to be expanded to their proper forms or matching constants/variables need to be defined in custom code. shorthand expansion cc components.classes ci components.interfaces cr components.results cu components.utils multi-browser compatibility to make an extension compatible with seamonkey as well as fi...

Updating an extension to support multiple Mozilla applications - Archive of obsolete content
k at it side-by-side with the article, or to use it as a basis for your own extension. download the sample updating the install manifest the first step is to revise the extension's install manifest to indicate that it can be installed in thunderbird and sunbird. ...
...after inse...
...after inserting this code, you can successfully install the extension into any (or all) of firefox, thunderbird, and sunbird, but you won't see any effect in thunderbird and sunbird. ...

CSS -moz-bool-pref() @supports function
the -moz-bool-pref() @supports condition is available to gecko chrome and ua stylesheets to check if a boolean preference is enabled. syntax -moz-bool-pref( <string> ) parameters <string> the preference name returns evaluates to true if the preference is enabled, false otherwise. example warning: this will only work when loaded from a gecko chrome stylesheet. html <div id="pref-test"> this will have a green background if the <code>test</code> preference is enabled. ...
...boolean preference is enabled. ...
... <string> the preference name returns evaluates to true if the preference is enabled, false otherwise. ...

BasicCardRequest.supportedTypes - Web APIs
the obsolete supportedtypes property of the basiccardrequest dictionary can optionally be provided to specify an array of domstrings representing the card types that the retailer supports (e.g. credit, debit, prepaid). this property is obsolete and should no longer be used. instead of making the web app or site worry about this, the onus has been transferred to the payment processor. syntax basiccardrequest.supportedtypes = [cardtype1...cardtypen]; value an array containing one or more domstrings, which describe the card types the retailer supports. legal values are defined in basiccardtype enum, and are currently: credit debit prepaid example the following example shows a sample definition of the first parameter of the paymentrequest() constructor, the data property of which...
...uest.supportedtypes = [cardtype1...cardtypen]; value an array containing one or more domstrings, which describe the card types the retailer supports. legal values are defined in basiccardtype enum, and are currently: credit debit prepaid example the following example shows a sample definition of the first parameter of the paymentrequest() constructor, the data property of which contains supportednetworks and supportedtypes properties. var supportedinstruments = [{ supportedmethods: 'basic-card', data: { supportednetworks: ['visa', 'mastercard', 'amex', 'jcb', 'diners', 'discover', 'mir', 'unionpay'], supportedtypes: ['credit', 'debit'] } }]; var details = { ... }; var options = { ... ...
... of which contains supportednetworks and supportedtypes properties. var supportedinstruments = [{ supportedmethods: 'basic-card', data: { supportednetworks: ['visa', 'mastercard', 'amex', 'jcb', 'diners', 'discover', 'mir', 'unionpay'], supportedtypes: ['credit', 'debit'] } }]; var details = { ... }; var options = { ... ...

DOMTokenList.supports() - Web APIs
the supports() method of the domtokenlist interface returns true if a given token is in the associated attribute's supported tokens. this method is intended to support feature detection. syntax let trueorfalse = element.supports(token) parameters token a domstring containing the token to query for. returns a boolean indicating whether the token was found. ...
...face returns true if a given token is in the associated attribute's supported tokens. this method is intended to support feature detection. syntax let trueorfalse = element.supports(token) parameters token a domstring containing the token to query for. returns a boolean indicating whether the token was found. ...
... the associated attribute's supported tokens. this method is intended to support feature detection. syntax let trueorfalse = element.supports(token) parameters token a domstring containing the token to query for. returns a boolean indicating whether the token was found. example let iframe = document.getelementbyid('display'); if (iframe.sandbox.supports('an-upcoming-feature')) { // support code for mystery future feature } else { // fallback code } if (iframe.sandbox.supports('allow-scripts')) { // instruct frame to run javascript // // (note: this feature is well-supported; this is just an example!) // } specifications specification status comment credential management level 1 working draft initial definition. ...

MediaTrackConstraints.noiseSuppression - Web APIs
the mediatrackconstraints dictionary's noisesuppression property is a constrainboolean describing the requested or mandatory constraints placed upon the value of the noisesuppression constrainable property. if needed, you can determine whether or not this constraint is supported by checking the value of mediatracksupportedconstraints.noisesuppression as returned by a call to mediadevices.getsupportedconstraints(). however, typically this is unnecessary since browsers will simply ignore any constraints they're unfamiliar with. noise suppression is typically provided by microphones, although it can be provided by other input sources as well. ...
...ng the value of mediatracksupportedconstraints.noisesuppression as returned by a call to mediadevices.getsupportedconstraints(). however, typically this is unnecessary since browsers will simply ignore any constraints they're unfamiliar with. noise suppression is typically provided by microphones, although it can be provided by other input sources as well. syntax var constraintsobject = { noisesuppression: constraint }; constraintsobject.noisesuppression = constraint; value if this value is a simple true or false, the user agent will attempt to obtain media with noise suppression enabled or disabled as specified, if possible, but will not fail if this can't be done. if, instead, the value is given as an object with an exact field, that field's boolean value indicates a required setting...
...raint }; constraintsobject.noisesuppression = constraint; value if this value is a simple true or false, the user agent will attempt to obtain media with noise suppression enabled or disabled as specified, if possible, but will not fail if this can't be done. if, instead, the value is given as an object with an exact field, that field's boolean value indicates a required setting for the noise suppression feature; if it can't be met, then the request will result in an error. example see example: constraint exerciser in capabilities, constraints, and settings for an example. specifications specification status comment media capture and streamsthe definition of 'noisesuppression' in that specification. candidate recommendation initial specification. ...

MediaTrackSupportedConstraints.aspectRatio - Web APIs
the mediatracksupportedconstraints dictionary's aspectratio property is a read-only boolean value which is present (and set to true) in the object returned by mediadevices.getsupportedconstraints() if and only if the user agent supports the aspectratio constraint. if the constraint isn't supported, it's not included in the list, so this value will never be false. you can access the supported constraints dictionary by calling navigator.mediadevices.getsupportedconstraints(). syntax aspectconstraintsupported = supportedconstraintsdictionary.aspectratio; value this property is present in the dictionary (and its value is always true) if the user agent supports the aspectratio constraint. ...
...e. you can access the supported constraints dictionary by calling navigator.mediadevices.getsupportedconstraints(). syntax aspectconstraintsupported = supportedconstraintsdictionary.aspectratio; value this property is present in the dictionary (and its value is always true) if the user agent supports the aspectratio constraint. if the property isn't present, this property is missing from the supported constraints dictionary, and you'll get undefined if you try to look at its value. ...
...rts the aspectratio constraint. if the property isn't present, this property is missing from the supported constraints dictionary, and you'll get undefined if you try to look at its value. example html content <div id="result"> </div> css content #result { font: 14px "arial", sans-serif; } javascript content let result = document.getelementbyid("result"); if (navigator.mediadevices.getsupportedconstraints().aspectratio) { result.innerhtml = "supported!"; } else { result.innerhtml = "not supported!"; } result specifications specification status comment media capture and streamsthe definition of 'aspectratio' in that specification. candidate recommendation initial specification. ...

MediaTrackSupportedConstraints.channelCount - Web APIs
the mediatracksupportedconstraints dictionary's channelcount property is a read-only boolean value which is present (and set to true) in the object returned by mediadevices.getsupportedconstraints() if and only if the user agent supports the channelcount constraint. if the constraint isn't supported, it's not included in the list, so this value will never be false. you can access the supported constraints dictionary by calling navigator.mediadevices.getsupportedconstraints(). syntax channelcountconstraintsupported = supportedconstraintsdictionary.channelcount; value this property is present in the dictionary (and its value is always true) if the user agent supports the channelcount constraint. ...
...can access the supported constraints dictionary by calling navigator.mediadevices.getsupportedconstraints(). syntax channelcountconstraintsupported = supportedconstraintsdictionary.channelcount; value this property is present in the dictionary (and its value is always true) if the user agent supports the channelcount constraint. if the property isn't present, this property is missing from the supported constraints dictionary, and you'll get undefined if you try to look at its value. ...
...ts the channelcount constraint. if the property isn't present, this property is missing from the supported constraints dictionary, and you'll get undefined if you try to look at its value. example html content <div id="result"> </div> css content #result { font: 14px "arial", sans-serif; } javascript content let result = document.getelementbyid("result"); if (navigator.mediadevices.getsupportedconstraints().channelcount) { result.innerhtml = "supported!"; } else { result.innerhtml = "not supported!"; } result specifications specification status comment media capture and streamsthe definition of 'channelcount' in that specification. candidate recommendation initial specification. ...

MediaTrackSupportedConstraints.deviceId - Web APIs
the mediatracksupportedconstraints dictionary's deviceid property is a read-only boolean value which is present (and set to true) in the object returned by mediadevices.getsupportedconstraints() if and only if the user agent supports the deviceid constraint. if the constraint isn't supported, it's not included in the list, so this value will never be false. you can access the supported constraints dictionary by calling navigator.mediadevices.getsupportedconstraints(). syntax deviceidconstraintsupported = supportedconstraintsdictionary.deviceid; value this property is present in the dictionary (and its value is always true) if the user agent supports the deviceid constraint. ...
...false. you can access the supported constraints dictionary by calling navigator.mediadevices.getsupportedconstraints(). syntax deviceidconstraintsupported = supportedconstraintsdictionary.deviceid; value this property is present in the dictionary (and its value is always true) if the user agent supports the deviceid constraint. if the property isn't present, this property is missing from the supported constraints dictionary, and you'll get undefined if you try to look at its value. ...
...pports the deviceid constraint. if the property isn't present, this property is missing from the supported constraints dictionary, and you'll get undefined if you try to look at its value. example html content <div id="result"> </div> css content #result { font: 14px "arial", sans-serif; } javascript content let result = document.getelementbyid("result"); if (navigator.mediadevices.getsupportedconstraints().deviceid) { result.innerhtml = "supported!"; } else { result.innerhtml = "not supported!"; } result specifications specification status comment media capture and streamsthe definition of 'deviceid' in that specification. candidate recommendation initial specification. ...

MediaTrackSupportedConstraints.echoCancellation - Web APIs
the mediatracksupportedconstraints dictionary's echocancellation property is a read-only boolean value which is present (and set to true) in the object returned by mediadevices.getsupportedconstraints() if and only if the user agent supports the echocancellation constraint. if the constraint isn't supported, it's not included in the list, so this value will never be false. you can access the supported constraints dictionary by calling navigator.mediadevices.getsupportedconstraints(). syntax echocancellationconstraintsupported = supportedconstraintsdictionary.echocancellation; value this property is present in the dictionary (and its value is always true) if the user agent supports the echocancellation constraint. ...
...he supported constraints dictionary by calling navigator.mediadevices.getsupportedconstraints(). syntax echocancellationconstraintsupported = supportedconstraintsdictionary.echocancellation; value this property is present in the dictionary (and its value is always true) if the user agent supports the echocancellation constraint. if the property isn't present, this property is missing from the supported constraints dictionary, and you'll get undefined if you try to look at its value. ...
...he echocancellation constraint. if the property isn't present, this property is missing from the supported constraints dictionary, and you'll get undefined if you try to look at its value. example html content <div id="result"> </div> css content #result { font: 14px "arial", sans-serif; } javascript content let result = document.getelementbyid("result"); if (navigator.mediadevices.getsupportedconstraints().echocancellation) { result.innerhtml = "supported!"; } else { result.innerhtml = "not supported!"; } result specifications specification status comment media capture and streamsthe definition of 'echocancellation' in that specification. candidate recommendation initial specification. ...

MediaTrackSupportedConstraints.facingMode - Web APIs
the mediatracksupportedconstraints dictionary's facingmode property is a read-only boolean value which is present (and set to true) in the object returned by mediadevices.getsupportedconstraints() if and only if the user agent supports the facingmode constraint. if the constraint isn't supported, it's not included in the list, so this value will never be false. you can access the supported constraints dictionary by calling navigator.mediadevices.getsupportedconstraints(). syntax facingmodeconstraintsupported = supportedconstraintsdictionary.facingmode; value this property is present in the dictionary (and its value is always true) if the user agent supports the facingmode constraint. ...
... you can access the supported constraints dictionary by calling navigator.mediadevices.getsupportedconstraints(). syntax facingmodeconstraintsupported = supportedconstraintsdictionary.facingmode; value this property is present in the dictionary (and its value is always true) if the user agent supports the facingmode constraint. if the property isn't present, this property is missing from the supported constraints dictionary, and you'll get undefined if you try to look at its value. ...
...) if the user agent supports the facingmode constraint. if the property isn't present, this property is missing from the supported constraints dictionary, and you'll get undefined if you try to look at its value. example html <div id="result"> </div> css #result { font: 14px "arial", sans-serif; } javascript let result = document.getelementbyid("result"); if (navigator.mediadevices.getsupportedconstraints().facingmode) { result.innerhtml = "supported!"; } else { result.innerhtml = "not supported!"; } result specifications specification status comment media capture and streamsthe definition of 'facingmode' in that specification. candidate recommendation initial specification. ...

MediaTrackSupportedConstraints.groupId - Web APIs
the mediatracksupportedconstraints dictionary's groupid property is a read-only boolean value which is present (and set to true) in the object returned by mediadevices.getsupportedconstraints() if and only if the user agent supports the groupid constraint. if the constraint isn't supported, it's not included in the list, so this value will never be false. you can access the supported constraints dictionary by calling navigator.mediadevices.getsupportedconstraints(). syntax groupidconstraintsupported = supportedconstraintsdictionary.groupid; value this property is present in the dictionary (and its value is always true) if the user agent supports the groupid constraint. ...
...be false. you can access the supported constraints dictionary by calling navigator.mediadevices.getsupportedconstraints(). syntax groupidconstraintsupported = supportedconstraintsdictionary.groupid; value this property is present in the dictionary (and its value is always true) if the user agent supports the groupid constraint. if the property isn't present, this property is missing from the supported constraints dictionary, and you'll get undefined if you try to look at its value. ...
...upports the groupid constraint. if the property isn't present, this property is missing from the supported constraints dictionary, and you'll get undefined if you try to look at its value. example html content <div id="result"> </div> css content #result { font: 14px "arial", sans-serif; } javascript content let result = document.getelementbyid("result"); if (navigator.mediadevices.getsupportedconstraints().groupid) { result.innerhtml = "supported!"; } else { result.innerhtml = "not supported!"; } result specifications specification status comment media capture and streamsthe definition of 'groupid' in that specification. candidate recommendation initial specification. ...

MediaTrackSupportedConstraints.latency - Web APIs
the mediatracksupportedconstraints dictionary's latency property is a read-only boolean value which is present (and set to true) in the object returned by mediadevices.getsupportedconstraints() if and only if the user agent supports the latency constraint. if the constraint isn't supported, it's not included in the list, so this value will never be false. you can access the supported constraints dictionary by calling navigator.mediadevices.getsupportedconstraints(). syntax latencyconstraintsupported = supportedconstraintsdictionary.latency; value this property is present in the dictionary (and its value is always true) if the user agent supports the latency constraint. ...
...be false. you can access the supported constraints dictionary by calling navigator.mediadevices.getsupportedconstraints(). syntax latencyconstraintsupported = supportedconstraintsdictionary.latency; value this property is present in the dictionary (and its value is always true) if the user agent supports the latency constraint. if the property isn't present, this property is missing from the supported constraints dictionary, and you'll get undefined if you try to look at its value. ...
...upports the latency constraint. if the property isn't present, this property is missing from the supported constraints dictionary, and you'll get undefined if you try to look at its value. example html content <div id="result"> </div> css content #result { font: 14px "arial", sans-serif; } javascript content let result = document.getelementbyid("result"); if (navigator.mediadevices.getsupportedconstraints().latency) { result.innerhtml = "supported!"; } else { result.innerhtml = "not supported!"; } result specifications specification status comment media capture and streamsthe definition of 'latency' in that specification. candidate recommendation initial specification. ...

MediaTrackSupportedConstraints.sampleRate - Web APIs
the mediatracksupportedconstraints dictionary's samplerate property is a read-only boolean value which is present (and set to true) in the object returned by mediadevices.getsupportedconstraints() if and only if the user agent supports the samplerate constraint. if the constraint isn't supported, it's not included in the list, so this value will never be false. you can access the supported constraints dictionary by calling navigator.mediadevices.getsupportedconstraints(). syntax samplerateconstraintsupported = supportedconstraintsdictionary.samplerate; value this property is present in the dictionary (and its value is always true) if the user agent supports the samplerate constraint. ...
... you can access the supported constraints dictionary by calling navigator.mediadevices.getsupportedconstraints(). syntax samplerateconstraintsupported = supportedconstraintsdictionary.samplerate; value this property is present in the dictionary (and its value is always true) if the user agent supports the samplerate constraint. if the property isn't present, this property is missing from the supported constraints dictionary, and you'll get undefined if you try to look at its value. ...
...orts the samplerate constraint. if the property isn't present, this property is missing from the supported constraints dictionary, and you'll get undefined if you try to look at its value. example html content <div id="result"> </div> css content #result { font: 14px "arial", sans-serif; } javascript content let result = document.getelementbyid("result"); if (navigator.mediadevices.getsupportedconstraints().samplerate) { result.innerhtml = "supported!"; } else { result.innerhtml = "not supported!"; } result specifications specification status comment media capture and streamsthe definition of 'samplerate' in that specification. candidate recommendation initial specification. ...

MediaTrackSupportedConstraints.sampleSize - Web APIs
the mediatracksupportedconstraints dictionary's samplesize property is a read-only boolean value which is present (and set to true) in the object returned by mediadevices.getsupportedconstraints() if and only if the user agent supports the samplesize constraint. if the constraint isn't supported, it's not included in the list, so this value will never be false. you can access the supported constraints dictionary by calling navigator.mediadevices.getsupportedconstraints(). syntax samplesizeconstraintsupported = supportedconstraintsdictionary.samplesize; value this property is present in the dictionary (and its value is always true) if the user agent supports the samplesize constraint. ...
... you can access the supported constraints dictionary by calling navigator.mediadevices.getsupportedconstraints(). syntax samplesizeconstraintsupported = supportedconstraintsdictionary.samplesize; value this property is present in the dictionary (and its value is always true) if the user agent supports the samplesize constraint. if the property isn't present, this property is missing from the supported constraints dictionary, and you'll get undefined if you try to look at its value. ...
...orts the samplesize constraint. if the property isn't present, this property is missing from the supported constraints dictionary, and you'll get undefined if you try to look at its value. example html content <div id="result"> </div> css content #result { font: 14px "arial", sans-serif; } javascript content let result = document.getelementbyid("result"); if (navigator.mediadevices.getsupportedconstraints().samplesize) { result.innerhtml = "supported!"; } else { result.innerhtml = "not supported!"; } result specifications specification status comment media capture and streamsthe definition of 'samplesize' in that specification. candidate recommendation initial specification. ...

Node.isSupported() - Web APIs
the node.issupported()returns a boolean flag containing the result of a test whether the dom implementation implements a specific feature and this feature is supported by the specific node. syntax boolvalue = element.issupported(feature, version) parameters feature is a domstring containing the name of the feature to test. this is the same name which can be passed to the method hasfeature on domimplementation. possible values defined within the core dom specification are listed on the dom level 2 conformance section. version is a domstring containing the version number of the feature to test. in dom level 2, version 1, this is the string 2.0. if the version is not specified, supporting any version of the feature will cause the method to return true. example <div id="doc"> </div...
... core dom specification are listed on the dom level 2 conformance section. version is a domstring containing the version number of the feature to test. in dom level 2, version 1, this is the string 2.0. if the version is not specified, supporting any version of the feature will cause the method to return true. example <div id="doc"> </div> <script> // get an element and check to see if its supports the dom2 html module. var main = document.getelementbyid('doc'); var output = main.issupported('html', '2.0'); </script> specifications specification status comment document object model (dom) level 3 core specificationthe definition of 'node.issupported()' in that specification. obsolete no change from document object model (dom) level 2 core specifica...
...pported('html', '2.0'); </script> specifications specification status comment document object model (dom) level 3 core specificationthe definition of 'node.issupported()' in that specification. obsolete no change from document object model (dom) level 2 core specification. document object model (dom) level 2 core specificationthe definition of 'node.issupported()' in that specification. obsolete initial definition. ...

StorageQuota.supportedTypes - Web APIs
obsolete initial definition. ...
... obsolete initial definition. ...
... obsolete initial definition. ...

415 Unsupported Media Type - HTTP
the http 415 unsupported media type client error response code indicates that the server refuses to accept the request because the payload format is in an unsupported format. the format problem might be due to the request's indicated content-type or content-encoding, or as a result of inspecting the data directly. ...
... the http 415 unsupported media type client error response code indicates that the server refuses to accept the request because the payload format is in an unsupported format. the format problem might be due to the request's indicated content-type or content-encoding, or as a result of inspecting the data directly. ...
...error response code indicates that the server refuses to accept the request because the payload format is in an unsupported format. the format problem might be due to the request's indicated content-type or content-encoding, or as a result of inspecting the data directly. ...

505 HTTP Version Not Supported - HTTP
the hypertext transfer protocol (http) 505 http version not supported response status code indicates that the http version used in the request is not supported by the server. ...
... the hypertext transfer protocol (http) 505 http version not supported response status code indicates that the http version used in the request is not supported by the server. ...
... the hypertext transfer protocol (http) 505 http version not supported response status code indicates that the http version used in the request is not supported by the server. ...

Handling media support issues in web content - Web media technologies
and with a variety of capabilities. the availability of choices is good for the user, in that they can choose the format that suits their needs best. there is a drawback, however: because there are so many to choose from, with so many different kinds of licenses and design principles involved, each web browser developer is left to its own devices when deciding which media file types and codecs to support. this places a small, but reasonably easily overcome, burden on the web developer: to properly handle the situation when the user's browser can't handle a particular type of media. this guide covers techniques you can use to develop web content that meets your media needs while providing the most broadly compatible experience possible. topics we will examine fallbacks, baseline media formats...
...s very large and may take time to download (especially for slower devices or connections), you can offer a lower-resolution or alternate version that will be displayed until the full-quality version is available to be displayed. we'll look at both of these scenarios and how to implement them. poster frames for video progressive images images—whether embedded using <img> or <picture>—don't support a concept similar to poster frames. however, there are ways to present an image in low quality while it's still loading. this requires creating your images using progressive formats, such as progressive jpeg or interlaced png. once your image has been converted to progressive form, you can simply use it as usual. <img src="/images/stafff-photo-huge-progressive.jpg" alt="staff photo, ta...
...s it loads—or after it's finished loading—to present it in full quality. note: progressive (or interlaced) images are inherently slightly larger than the non-progressive versions of the same images. whether the interlacing will benefit your users is up to you to determine. specifying multiple sources checking compatibility in javascript htmlmediaelement.canplaytype and mediasource.istypesupported... detecting playback errors adapting presentation with css memory management ...

Supporting per-window private browsing - Archive of obsolete content
"last-pb-context-exited", false); preventing a private session from ending if there are unfinished transactions involving private data, where the transactions will be terminated by the ending of a private session, an add-on can vote to prevent the session from ending (prompting the user is recommended). ...
...pting the user is recommended). to do this, observe the last-pb-context-exiting notification and set the data field of the nsisupportsprbool subject to true. ...

Debug.msUpdateAsyncCallbackRelation - Archive of obsolete content
relationtype optional the value that specifies the relationship status. remarks the synchronous work item is typically the callback function for the asynchronous operation. this function may be called when an asynchronous operation is aborted, when a join operation is used, or in other scenarios. ...
...clude: debug.ms_async_callback_status_assign_delegate debug.ms_async_callback_status_join debug.ms_async_callback_status_chooseany debug.ms_async_callback_status_cancel debug.ms_async_callback_status_error for more information, see debug constants. note: some debugging tools do not display the information sent to the debugger by this function. requirements supported in the internet explorer 11 standards document mode. also supported in store apps (windows 8.1 and windows phone 8.1). not supported in the following document modes: quirks, internet explorer 6 standards, internet explorer 7 standards, internet explorer 8 standards, internet explorer 9 standards, internet explorer 10 standards. not supported in windows 8. ...

nsIEditorIMESupport
editor/idl/nsieditorimesupport.idlscriptable please add a summary to this article. ...
... editor/idl/nsieditorimesupport.idlscriptable please add a summary to this article. ...

nsIEditorMailSupport
editor/idl/nsieditormailsupport.idlscriptable provides simple editing actions for the thunderbird mail editor. inherits from: nsisupports last changed in gecko 1.7 method overview nsisupportsarray getembeddedobjects(); nsidomnode insertascitedquotation(in astring aquotedtext, in astring acitation, in boolean ainserthtml); nsidomnode insertasquotation(in astring aquotedtext); void inserttextwithquotations(in domstring astringtoinsert); void pasteascitedquotation(in astring acitation, in long aselectiontype); void pasteasquotation(in long aselectiontype); void rewrap(in boolean arespectnewlines); void stripcites(); methods getembeddedobjects() get a list of img and object tags in the current document. nsisupportsarray getembeddedobjects(); parameters none. r...
...hquotations(in domstring astringtoinsert); void pasteascitedquotation(in astring acitation, in long aselectiontype); void pasteasquotation(in long aselectiontype); void rewrap(in boolean arespectnewlines); void stripcites(); methods getembeddedobjects() get a list of img and object tags in the current document. nsisupportsarray getembeddedobjects(); parameters none. return value an nsisupportsarray containing the img and object tags of the current document. insertascitedquotation() insert a string as quoted text (whose representation is dependent on the editor type), replacing the selected text (if any), including, if possible, a "cite" attribute. nsidomnode insertascitedquotation( in astring aquotedtext, in astring acitation, in boolean ainserthtml ); parameters aquotedte...

nsISupports
last changed in gecko 1.0 method overview nsrefcnt addref();violates the xpcom interface guidelines void queryinterface(in nsiidref uuid, [iid_is(uuid),retval] out nsqiresult result); nsrefcnt release();violates the xpcom interface guidelines methods violates the xpcom interface guidelines addref() notifies the object that an interface pointer has been duplicated. nsrefcnt addref(); parameters none. return value an integer value that is generally ignored. queryinterface() the queryinterface method provides runtime type discovery. ...
...rameters none. return value an integer value that is generally ignored. remarks the method descriptions above were taken from essential com by don box. the point of those descriptions is to highlight the fact that addref() and release() do not necessarily correspond to incrementing and decrementing a counter, respectively, even though that is how they are usually implemented. on win32 systems, nsisupports is abi-compatible with microsoft com's iunknown interface. ...

nsISupportsPriority
an implementation of this interface is free to define the side-effects of changing the priority of an object. in some cases, changing the priority of an object may be disallowed (resulting in an exception being thrown) or may simply be ignored. ...
...an implementation of this interface is free to define the side-effects of changing the priority of an object. in some cases, changing the priority of an object may be disallowed (resulting in an exception being thrown) or may simply be ignored. ...

nsISupportsVoid
native code only! methods tostring() string tostring(); parameters none. return value a string valued representation of the object. ...
...native code only! methods tostring() string tostring(); parameters none. return value a string valued representation of the object. ...

nsISupportsWeakReference
xpcom/base/nsiweakreference.idlscriptable this interface is a factory interface, which produces appropriate instances of nsiweakreference. weak references in this scheme can only be produced for objects that implement this interface. inherits from: nsisupports last changed in gecko 1.7 method overview nsiweakreference getweakreference(); methods getweakreference() produces an appropriate instance of nsiweakreference. nsiweakreference getweakreference(); parameters none. return value the resulting nsiweakreference instance. remarks the xpcom glue library provides nssupportsweakreference, a canonical implementation of nsisupportsweakreference. this interface was frozen for gecko 0.9.9. see bug 48726 for details. from gecko 2.0 interfaces are no longe...
...reference. nsiweakreference getweakreference(); parameters none. return value the resulting nsiweakreference instance. remarks the xpcom glue library provides nssupportsweakreference, a canonical implementation of nsisupportsweakreference. ...

LDAP Support
it is not intended as an introduction to ldap and mozilla products. it assumes you are already familiar with configuring preferences for deployed builds in addition to setting up thunderbird to use an ldap directory. it should be noted that all of this information applies to both thunderbird and the seamonkey application suite. mail compose typedown in mail compose, when typing a partial mail address, a typedown window appears listing possible matches against address books and ldap directories. ...
...see bug #119291 for more details. original document information author(s): scott macgregor copyright information: portions of this content are © 1998–2010 by individual mozilla.org contributors; content available under a creative commons license | details. ...

Document.queryCommandSupported() - Web APIs
the document.querycommandsupported() method reports whether or not the specified editor command is supported by the browser. syntax issupported = document.querycommandsupported(command); parameters command the command for which to determine support. return value returns a boolean which is true if the command is supported and false if the command isn't. ...
...ommand); parameters command the command for which to determine support. return value returns a boolean which is true if the command is supported and false if the command isn't. ...

File and Directory Entries API support in Firefox - Web APIs
non-standard this feature is non-standard and is not on a standards track. do not use it on production sites facing the web: it will not work for every user. there may also be large incompatibilities between implementations and the behavior may change in the future. the original file system api was created to let browsers implement support for accessing a sandboxed virtual file system on the user's storage device. work to standardize the specification was abandoned back in 2012, but by that point, google chrome included its own implementation of the api. over time, a number of popular sites and web applications came to use it, often without providing any means of falling back to standard apis or even checking to be sure the api is available before using it. mozi...
...try or filesystemdirectoryentry for files dropped on a drop zone. you can't use the localfilesystem.requestfilesystem() method to get access to a specified local file system. the localfilesystem.resolvelocalfilesystemurl() method isn't implemented. only the asynchronous versions of the interfaces are implemented. any interfaces with names that end in "sync" aren't available. firefox only supports reading from files in the file system. you can't write to them. in particular, the filesystemfileentry.createwriter() method, used to create a filewriter to handle writing to a file, is not implemented and will just treturn an error. firefox doesn't support the "filesystem:" url scheme. ...

PaymentDetailsUpdate.error - Web APIs
the paymentdetailsupdate dictionary's error property is a human-readable domstring which provides an error message to be displayed if the specified information doesn't offer any valid shipping options. syntax errorstring = paymentdetailsupdate.error; paymentdetailsupdate.error = errorstring; value a domstring specifying the string to display to the user if the information specified in the paymentdetailsupdate doesn't provide any valid shipping options. this happens if both of the following are true: the paymentrequest specifies using its requestshipping property that shipping information is required. the paymentdetailsupdate object specifies no valid shipping options in its shippingoptions list. this message can be used to explain to the user why they cannot submit their paymen...
... list. this message can be used to explain to the user why they cannot submit their payment as currently specified—whether that's because the selected products cannot be shipped to their region or because their address is not served by any of the shipping companies you use. specifications specification status comment payment request apithe definition of 'paymentdetailsupdate.error' in that specification. candidate recommendation initial definition. ...

PaymentDetailsUpdate.shippingAddressErrors - Web APIs
for each property in paymentaddress, a property by the same name is found in shippingaddresserrors if and only if a validation error occurred for that property. in that case, the property in shippingaddresserrors is a string describing the validation error, ideally including suggestions about fixing the error. ...
... candidate recommendation initial definition. ...

WEBGL_compressed_texture_astc.getSupportedProfiles() - Web APIs
currently, this can be: "ldr": low dynamic range. "hdr": high dynamic range. dynamic range refers to ratio between the brightest and darkest parts of the scene. low dynamic ranges are for example jpeg format images which won't exceed 255:1, or crt monitors which won't exceed 100:1. an hdr image stores pixel values that span the whole tonal range of real-world scenes (100,000:1). ...
...dynamic range. dynamic range refers to ratio between the brightest and darkest parts of the scene. low dynamic ranges are for example jpeg format images which won't exceed 255:1, or crt monitors which won't exceed 100:1. an hdr image stores pixel values that span the whole tonal range of real-world scenes (100,000:1). examples var ext = gl.getextension('webgl_compressed_texture_astc'); ext.getsupportedprofiles(); // ["ldr"] specifications specification status comment webgl_compressed_texture_astcthe definition of 'webgl_compressed_texture_astc' in that specification. recommendation initial definition. ...

WAI ARIA Live Regions/API Support - Developer guides
these notes are for developers of screen readers. developers should use the aria live regions developer documentation. firefox 3 contains important improvements to the way the mozilla engine exposes live changes in a document. these features will help screen reader developers improve the quality and performance of live region support, both for pages that are marked up with aria live region markup, and for pages where the author did not add any additional markup. please read the aria spec or the live region report to learn about aria live region markup. as always, we're open to questions and suggestions for changes in community forums. events fired for web page mutations what changed in document? atk/at-spi event iaccessible2 event object about to be hidden or remov...
... text) text replaced text_changed::delete followed immediately by text_changed::insert ia2_event_text_removed followed immediately by ia2_event_text_inserted * we do not use msaa's create/destroy at the request of screen reader vendors, who avoid those events because they cause crashes on some important system -- show/hide are the equivalent of those events. ...

<msubsup> - MathML
the mathml <msubsup> element is used to attach both a subscript and a superscript, together, to an expression. it uses the following syntax: <msubsup> base subscript superscript </msubsup>. attributes class, id, style provided for use with stylesheets. href used to set a hyperlink to a specified uri. mathbackground the background color. you can use #rgb, #rrggbb and html color names. mathcolor the text color. you can use #rgb, #rrggbb and html color names. subscriptshift the minimum space by which to shift the subscript below the baseline of the expression, as a length value. this attribute is deprecated and will be removed in the future. superscriptshift the minimum space by which to shift the superscript above the baseline of the expression, as a length value. this at...
...ession, as a length value. this attribute is deprecated and will be removed in the future. superscriptshift the minimum space by which to shift the superscript above the baseline of the expression, as a length value. this attribute is deprecated and will be removed in the future. examples sample rendering: rendering in your browser: ∫ 0 1 <math displaystyle="true"> <msubsup> <mo> &#x222b;<!--integral --> </mo> <mn> 0 </mn> <mn> 1 </mn> </msubsup> </math> specifications specification status comment mathml 3.0the definition of 'msubsup' in that specification. recommendation current specification mathml 2.0the definition of 'msubsup' in that specification. recommendation initial specification ...

<msup> - MathML
the mathml <msup> element is used to attach a superscript to an expression. it uses the following syntax: <msup> base superscript </msup>. attributes class, id, style provided for use with stylesheets. href used to set a hyperlink to a specified uri. mathbackground the background color. you can use #rgb, #rrggbb and html color names. mathcolor the text color. you can use #rgb, #rrggbb and html color names. superscriptshift the minimum space by which to shift the superscript up from the baseline of the expression, as a length value. this attribute is deprecated and will be removed in the future. ...
...ou can use #rgb, #rrggbb and html color names. mathcolor the text color. you can use #rgb, #rrggbb and html color names. superscriptshift the minimum space by which to shift the superscript up from the baseline of the expression, as a length value. this attribute is deprecated and will be removed in the future. examples sample rendering: rendering in your browser: x 2 <math> <msup> <mi>x</mi> <mn>2</mn> </msup> </math> specifications specification status comment mathml 3.0the definition of 'msup' in that specification. recommendation current specification mathml 2.0the definition of 'msup' in that specification. recommendation initial specification ...

SVG 2 support in Mozilla - SVG: Scalable Vector Graphics
svg 2 is the next major version of the svg standard, which is a complete rework of the svg 1.2 draft. version 2 contains a lot of changes regarding the last stable version svg 1.1. those changes are listed below including their support status within mozilla applications. general change notes length attribute and indexed property for list interfaces implementation status unknown <script> element in content model of all elements implementation status unknown initialize(), appenditem(), replaceitem(), and insertitembefore() on list objects making a copy of any list item being inserted that is already in another list implementation status unknown crossorigin attribute for <image> and <script> elements not implemented ye...
...mentation status unknown context-fill and context-stroke paint values implemented (bug 719286 (firefox 18.0 / thunderbird 18.0 / seamonkey 2.15) and bug 798843 (firefox 26.0 / thunderbird 26.0 / seamonkey 2.23)) child keyword for <paint> values and marker properties implementation status unknown vector-effect property only none and non-scaling-stroke values are supported (bug 528332 (firefox 15 / thunderbird 15 / seamonkey 2.12), bug 1318208) arcs value for stroke-linejoin not implemented (bug 1239142) auto-start-reverse value for <marker>'s orient attribute implemented (bug 879659) svgpaint removed implementation status unknown fill and stroke taking multiple paints implementation status unknown z-in...

xml:base support in old browsers - Archive of obsolete content
note however, that this code is not based on a thorough examination of the specs related to forming base uris and could well have a number of errors. however, it is working in some of the cases tested. ...

suppressonselect - Archive of obsolete content
if set to true, the select event is never fired. ...

suppressOnSelect - Archive of obsolete content
« xul reference suppressonselect type: boolean gets and sets the value of the suppressonselect attribute. ...

ECMAScript 5 support in Mozilla - Archive of obsolete content
ecmascript 5.1, an older version of the standard upon which javascript is based, was approved in june 2011. the javascript runtime used in the latest versions of mozilla projects including both firefox and thunderbird has full support for ecmascript 5.1 features. this article covers the features supported by different versions of mozilla's javascript runtime. supported features added in javascript 1.8.5 (gecko 2, firefox 4 and later) firefox 4 has full ecmascript 5 support including the object.* methods and strict mode. see new in javascript 1.8.5. added in javascript 1.8.1 (gecko 1.9.1, firefox 3.5) native json support object.getprototypeof() method. string.trim() method, which trims whitespace from both ends of the string. gecko 1.9.1.4 updated the implementation of json.stringi...

Character sets supported by Gecko - Gecko Redirect 1
in gecko-internal apis, it is necessary to use particular (potentially) mixed-case names for the encodings. for encodings that have a compatibility name in the dom standard, except gbk, this is the compatibilty name. for other encodings, including gbk, this is the lower-case name from the encoding standard. ...

Script-supporting element - MDN Web Docs Glossary: Definitions of Web-related terms
in an html document, script-supporting elements are those elements that don't directly contribute to the appearance or layout of the page; instead, they're either scripts or contain information that's only used by scripts. these elements may be important, but do not affect the displayed page unless the page's scripts explicitly cause them to do so. there are only two script-supporting elements: <script> and <template>. technical reference to learn more, see script-supporting elements in kinds of html content. ...

Supported build targets
page moved to the in-tree documentation: https://firefox-source-docs.mozilla.org/build/buildsystem/supported-configurations.html ...

nsIDispatchSupport
js/src/xpconnect/idl/nsidispatchsupport.idlnot scriptable please add a summary to this article. inherits from: nsisupports last changed in gecko 1.7 method overview void comvariant2jsval(in comvariantptr comvar, out jsval val); unsigned long gethostingflags(in string acontext); boolean isclassmarkedsafeforscripting(in nscidref cid, out boolean classexists); boolean isclasssafetohost(in jscontextptr cx, in nscidref cid, in boolean capscheck, out boolean classexists); boolean isobjectsafeforscripting(in voidptr theobject, in nsiidref id); void jsval2comvariant(in jsval var, out comvariant comvar); methods comvariant2jsval() converts a com variant to a jsval. void comvariant2jsval( in comvariantptr comvar, out jsval val ); parameters comvar the com variant t...

nsISupportsCString
methods tostring() this methods returns a string valued representation of the object. string tostring(); parameters none. return value a string valued representation of the object. remarks this interface was frozen for gecko 1.2. see bug 166426 for details. from gecko 2.0 interfaces are no longer frozen. ...

nsISupportsChar
methods tostring() this methods returns a string valued representation of the object. string tostring(); parameters none. return value a string valued representation of the object. remarks this interface was frozen for gecko 1.2. see bug 166426 for details. from gecko 2.0 interfaces are no longer frozen. ...

nsISupportsDouble
methods tostring() this methods returns a string valued representation of the object. string tostring(); parameters none. return value a string valued representation of the object. remarks this interface was frozen for gecko 1.2. see bug 166426 for details. from gecko 2.0 interfaces are no longer frozen. ...

nsISupportsFloat
methods tostring() this methods returns a string valued representation of the object. string tostring(); parameters none. return value a string valued representation of the object. remarks this interface was frozen for gecko 1.2. see bug 166426 for details. from gecko 2.0 interfaces are no longer frozen. ...

nsISupportsID
methods tostring() this method returns a string valued representation of the object. string tostring(); parameters none. return value a string valued representation of the object. remarks this interface was frozen for gecko 1.2. see bug bug 166426 for details. from gecko 2.0 interfaces are no longer frozen. ...

nsISupportsInterfacePointer
dataiid nsidptr stores an iid corresponding to the data attribute. methods tostring() returns a string valued representation of the object. string tostring(); parameters none. return value a string valued representation of the object. remarks this interface was frozen for gecko 1.2. see bug bug 166426 for details. from gecko 2.0 interfaces are no longer frozen. ...

nsISupportsPRBool
methods tostring() this methods returns a string valued representation of the object. string tostring(); parameters none. return value a string valued representation of the object. remarks this interface was frozen for gecko 1.2. see bug 166426 for details. from gecko 2.0 interfaces are no longer frozen. ...

nsISupportsPRInt16
methods tostring() this methods returns a string valued representation of the object. string tostring(); parameters none. return value a string valued representation of the object. remarks this interface was frozen for gecko 1.2. see bug 166426 for details. from gecko 2.0 interfaces are no longer frozen. ...

nsISupportsPRInt32
methods tostring() this methods returns a string valued representation of the object. string tostring(); parameters none. return value a string valued representation of the object. remarks this interface was frozen for gecko 1.2. see bug 166426 for details. from gecko 2.0 interfaces are no longer frozen. ...

nsISupportsPRInt64
methods tostring() this methods returns a string valued representation of the object. string tostring(); parameters none. return value a string valued representation of the object. remarks this interface was frozen for gecko 1.2. see bug 166426 for details. from gecko 2.0 interfaces are no longer frozen. ...

nsISupportsPRTime
methods tostring() this methods returns a string valued representation of the object. string tostring(); parameters none. return value a string valued representation of the object. remarks this interface was frozen for gecko 1.2. see bug 166426 for details. from gecko 2.0 interfaces are no longer frozen. ...

nsISupportsPRUint16
methods tostring() this methods returns a string valued representation of the object. string tostring(); parameters none. return value a string valued representation of the object. remarks this interface was frozen for gecko 1.2. see bug 166426 for details. from gecko 2.0 interfaces are no longer frozen. ...

nsISupportsPRUint32
methods tostring() this methods returns a string valued representation of the object. string tostring(); parameters none. return value a string valued representation of the object. remarks this interface was frozen for gecko 1.2. see bug 166426 for details. from gecko 2.0 interfaces are no longer frozen. ...

nsISupportsPRUint64
methods tostring() this methods returns a string valued representation of the object. string tostring(); parameters none. return value a string valued representation of the object. remarks this interface was frozen for gecko 1.2. see bug 166426 for details. from gecko 2.0 interfaces are no longer frozen. ...

nsISupportsPRUint8
methods tostring() this methods returns a string valued representation of the object. string tostring(); parameters none. return value a string valued representation of the object. remarks this interface was frozen for gecko 1.2. see bug 166426 for details. from gecko 2.0 interfaces are no longer frozen. ...

nsISupportsString
methods tostring() this methods returns a string valued representation of the object. string tostring(); parameters none. return value a string valued representation of the object. remarks this interface was frozen for gecko 1.2. see bug 166426 for details. from gecko 2.0 interfaces are no longer frozen. ...

nsIWebappsSupport
void installapplication( in wstring title, in wstring uri, in wstring iconuri, in wstring icondata ); parameters title the user-friendly name of the application. uri the uri of the web application. iconuri the uri of icon of the web application. ...

Supporting both TouchEvent and MouseEvent - Web APIs
ideally, a touch-based application does not need to explicitly address mouse input. ...

:-moz-suppressed - CSS: Cascading Style Sheets
the :-moz-suppressed css pseudo-class is a mozilla extension that matches elements representing images that were suppressed because loading images from the specified site has been blocked. note: this selector is mainly intended to be used by theme developers. syntax :-moz-suppressed examples styling elements that have been blocked :-moz-suppressed { background: yellow; padding: 8px; } specifications not part of any standard. ...

Reason: Credential is not supported if the CORS header ‘Access-Control-Allow-Origin’ is ‘*’ - HTTP
to correct this problem on the client side, simply ensure that the credentials flag's value is false when issuing your cors request. if the request is being issued using xmlhttprequest, make sure you're not setting withcredentials to true. if using server-sent events, make sure eventsource.withcredentials is false (it's the default value). if using the fetch api, make sure request.credentials is "omit". ...

Index - Web APIs
, start undefined. 121 audioconfiguration api, audio, audioconfiguration, experimental, interface, media capabilities api, reference, video the audioconfiguration dictionary of the media capabilities api defines the audio file being tested when calling mediacapabilities.encodinginfo() or mediacapabilities.decodinginfo() to query whether a specific audio configuration is supported, smooth, and/or power efficient. 122 audiocontext api, audio, audiocontext, interface, reference, web audio api, sound the audiocontext interface represents an audio-processing graph built from audio modules linked together, each represented by an audionode. 123 audiocontext() audio, audio context, audio graph, audiocontext, constructor, context, media, m...
...nabled or disabled, for example by changing the track's enabled property. 201 audiotracklist: removetrack event event the removetrack event is fired when a track is removed from an audiotracklist. 202 audioworklet api, audio, audioworklet, experimental, interface, reference, web audio api, worklet the audioworklet interface of the web audio api is used to supply custom audio processing scripts. user-supplied code is run in the audioworkletglobalscope global execution context in a separate web audio rendering thread along with other nodes, allowing for zero-latency audio processing. 203 audioworkletglobalscope api, audioworkletglobalscope, experimental, interface, reference, web audio api the audioworkletglobalscope interface of th...
...in the audioworkletglobalscope global execution context in a separate web audio rendering thread along with other nodes, allowing for zero-latency audio processing. 203 audioworkletglobalscope api, audioworkletglobalscope, experimental, interface, reference, web audio api the audioworkletglobalscope interface of the web audio api represents a global execution context for user-supplied code, which defines custom audioworkletprocessor-derived classes. each baseaudiocontext has a single audioworklet available under the audioworklet property, which runs its code in a single audioworkletglobalscope. 204 audioworkletglobalscope.registerprocessor api, audio, audioworkletglobalscope, audioworkletprocessor, method, reference, web audio api the registerprocesso...
...And 225 more matches

IDBObjectStore - Web APIs
the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...e check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 164 more matches

Fullscreen API - Web APIs
ts) in full-screen mode, and to exit full-screen mode once it is no longer needed. this makes it possible to present desired content—such as an online game—using the user's entire screen, removing all browser user interface elements and other applications from the screen until full-screen mode is shut off. see the article guide to the fullscreen api for details on how to use the api. note: support for this api varies somewhat across browsers, with many requiring vendor prefixes and/or not implementing the latest specification. see the browser compatibility section below for details on support for this api. you may wish to consider using a library such as fscreen for vendor agnostic access to the fullscreen api. interfaces the fullscreen api has no interfaces of its own. instead, it ...
...reen() asks the user agent to place the specified element (and, by extension, its descendants) into full-screen mode, removing all of the browser's ui elements as well as all other applications from the screen. returns a promise which is resolved once full-screen mode has been activated. properties the document interface provides properties that can be used to determine if full-screen mode is supported and available, and if full-screen mode is currently active, which element is using the screen. documentorshadowroot.fullscreenelement the fullscreenelement property tells you the element that's currently being displayed in full-screen mode on the dom (or shadow dom). if this is null, the document is not in full-screen mode. document.fullscreenenabled the fullscreenenabled property tel...
... being displayed in full-screen mode on the dom (or shadow dom). if this is null, the document is not in full-screen mode. document.fullscreenenabled the fullscreenenabled property tells you whether or not it is possible to engage full-screen mode. this is false if full-screen mode is not available for any reason (such as the "fullscreen" feature not being allowed, or full-screen mode not being supported). event handlers the fullscreen api defines two events which can be used to detect when full-screen mode is turned on and off, as well as when errors occur during the process of changing between full-screen and windowed modes. event handlers for these events are available on the document and element interfaces. note: these event handler properties are not available as html content attr...
...And 114 more matches

Selection API - Web APIs
atibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...thub.com/mdn/browser-compat-data and send us a pull request. ...
...And 114 more matches

BluetoothCharacteristicProperties - Web APIs
that is true if reliable writes to the characteristic descriptor is permitted. writeread only returns a boolean that is true if the writing to the characteristic with response is permitted. writewithoutresponseread only returns a boolean that is true if the writing to the characteristic without response is permitted. examples the following example shows how tell if a gatt characteristic supports value change notifications. let device = await navigator.bluetooth.requestdevice({ filters: [{services: ['heart_rate']}] }); let gatt = await device.gatt.connect(); let service = await gatt.getprimaryservice('heart_rate'); let characteristic = await service.getcharacteristic('heart_rate_measurement'); if (characteristic.properties.notify) { characteristics.addeventlistener('characterist...
...page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
... to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetbluetoothcharacteristicproperties experimentalchrome full support 56notes full support 56notes notes chromeos and macos only. full support 56notes disabled notes linux and versions of windows earlier than 10.disabled from version 56: this feature is behind the #enable-experimental-web-platform-features preference (needs to be set to enabled). to change preferences in chrome, visit chrome://flags. ...
...And 106 more matches

IDBIndex - Web APIs
lity the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
... please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 99 more matches

Index - Archive of obsolete content
software. or perhaps you're just curious about the history of an obsolete feature or api, and how it worked. 2 .htaccess ( hypertext access ) 301 redirect, cache control, custom error pages, htaccess, permanent redirect, redirect file accessing : htaccess files can be opened using any text editor, like windows notepad, vin, sublime text editor or any other. syntax highliting support for .htaccess files less. 3 2015 mdn fellowship program 2015, archive, fellowship no summary! 4 api api, archive archived documentation about obsolete web standards apis. 5 navigator api, navigator features that used to hang off the navigator interface, but have since been removed. 6 navigator.moznotification api, d...
...ram 2015, archive, fellowship no summary! 4 api api, archive archived documentation about obsolete web standards apis. 5 navigator api, navigator features that used to hang off the navigator interface, but have since been removed. 6 navigator.moznotification api, deprecated, mobile, non-standard, property, reference provides support for creating notification objects, which are used to display desktop notification alerts to the user. currently, these are only supported on firefox mobile and firefox os. see displaying notifications for an example. 7 window: deviceproximity event sensors, events the deviceproximity event is fired when fresh data is available from a proximity sensor. 8 window:...
...ibute to the add-on sdk. 27 modules add-ons, extensions a module is a self-contained unit of code, which is usually stored in a file, and has a well defined interface. the use of modules greatly improves the maintainability of code, by splitting it up into independent components, and enforcing logical boundaries between them. unfortunately, javascript does not yet have native support for modules: it has to rely on the host application to provide it with functionality such as loading subscripts, and exporting/ importing names. we will show how to do each of these things using the built-in components object provided by xulrunner application such as firefox and thunderbird. 28 private properties people have come up with several ways to emulate private p...
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Web video codec guide - Web media technologies
k. this guide introduces the video codecs you're most likely to encounter or consider using on the web, summaries of their capabilities and any compatibility and utility concerns, and advice to help you choose the right codec for your project's video. common codecs the following video codecs are those which are most commonly used on the web. ...
... following video codecs are those which are most commonly used on the web. for each codec, the containers (file types) that can support them are also listed. each codec provides a link to a section below which offers additional details about the codec, including specific capabilities and compatibility issues you may need to be aware of. ...
...dia video 1 (av1) codec is an open format designed by the alliance for open media specifically for internet video. it achieves higher data compression rates than vp9 and h.265/hevc, and as much as 50% higher rates than avc. av1 is fully royalty-free and is designed for use by both the <video> element and by webrtc. av1 currently offers three profiles: main, high, and professional with increasing support for color depths and chroma subsampling. in addition, a series of levels are specified, each defining limits on a range of attributes of the video. these attributes include frame dimensions, image area in pixels, display and decode rates, average and maximum bit rates, and limits on the number of tiles and tile columns used in the encoding/decoding process. for example, level av1 level 2.0 o...
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Web audio codec guide - Web media technologies
encode and decode it is handled by an audio codec (coder/decoder). in this article, we look at audio codecs used on the web to compress and decompress audio, what their capabilities and use cases are, and offer guidance when choosing audio codecs to use for your content. additionally, webrtc implementations generally use a subset of these codecs for their encoding and decoding of media, and may support additional codecs as well, for optimal cross-platform support of video and audio conferencing, and to integrate better with legacy telecommunication solutions. see codecs used by webrtc for details. for information about the fundamental concepts behind how digital audio works, see the article digital audio concepts. common codecs the list below denotes the codecs most commonly used on the ...
...timal cross-platform support of video and audio conferencing, and to integrate better with legacy telecommunication solutions. see codecs used by webrtc for details. for information about the fundamental concepts behind how digital audio works, see the article digital audio concepts. common codecs the list below denotes the codecs most commonly used on the web and which containers (file types) support them. if all you need to know is which codecs are even possible to use, this is for you. of course, individual browsers may or may not choose to support all of these codecs, and their support for which container types can use them may vary as well. in addition, browsers may choose to support additional codecs not included on this list. codec name (short) full codec name contai...
... them. if all you need to know is which codecs are even possible to use, this is for you. of course, individual browsers may or may not choose to support all of these codecs, and their support for which container types can use them may vary as well. in addition, browsers may choose to support additional codecs not included on this list. ...
...And 78 more matches

@font-feature-values - CSS: Cascading Style Sheets
compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ata. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internet@font-feature-valueschrome no support noedge no support nofirefox full support 34 full support 34 full support 24disabled disabled from version 24: this feature is behind the layout.css.font-features.enabled preference (needs to be set to true). to change preferences in firefox, visit a...
...nofirefox full support 34 full support 34 full support 24disabled disabled from version 24: this feature is behind the layout.css.font-features.enabled preference (needs to be set to true). ...
...And 76 more matches

Implementation Status - Archive of obsolete content
mozilla xforms is not actively maintained any more since about 2010! limitations and extensions the extension has some limitations and custom extension to the xforms 1.1 specification. these can be found on the mozilla xforms specials page. specification chapter index here we give an overview of xforms 1.1 specification chapters and the current status of the mozilla support. ...
...y maintained any more since about 2010! limitations and extensions the extension has some limitations and custom extension to the xforms 1.1 specification. these can be found on the mozilla xforms specials page. specification chapter index here we give an overview of xforms 1.1 specification chapters and the current status of the mozilla support. ...
...re since about 2010! ...
...And 75 more matches

JavaScript modules - JavaScript
anisms for splitting javascript programs up into separate modules that can be imported when needed. node.js has had this ability for a long time, and there are a number of javascript libraries and frameworks that enable module usage (for example, other commonjs and amd-based module systems like requirejs, and more recently webpack and babel). ...
...ke requirejs, and more recently webpack and babel). the good news is that modern browsers have started to support module functionality natively, and this is what this article is all about. this can only be a good thing — browsers can optimize loading of modules, making it more efficient than having to use a library and do all of that extra client-side processing and extra round trips. ...
...d to support module functionality natively, and this is what this article is all about. this can only be a good thing — browsers can optimize loading of modules, making it more efficient than having to use a library and do all of that extra client-side processing and extra round trips. ...
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Choosing the right approach - Learn web development
you can just use a single .catch() block to handle the errors for the entire chain. async callbacks just aren't very graceful. promise callbacks are always called in the strict order they are placed in the event queue; async callbacks aren't. async callbacks lose full control of how the function will be executed when passed to a third-party library. browser compatibility really good general support, although the exact support for callbacks in apis depends on the particular api. refer to the reference documentation for the api you're using for more specific support info. further information introducing asynchronous javascript, in particular async callbacks settimeout() settimeout() is a method that allows you to run a function after an arbitrary amount of time has passed. usefu...
......
...ime interval constant between executions regardless of how long the code takes to execute, and you won't get errors. ...
...And 74 more matches

BasicCardResponse - Web APIs
examples in the following example, the paymentrequest() constructor is used to create a new payment request, which takes three objects as parameters — one containing details of the payment methods that can be used for the payment, one containing details of the actual order (such as items bought and shipping options), and an optional object containing further options. ...
...one containing details of the payment methods that can be used for the payment, one containing details of the actual order (such as items bought and shipping options), and an optional object containing further options. the first of these three (supportedinstruments in the example below) contains a data property that has to conform to the structure defined by the basiccardrequest dictionary. ...
...e payment methods that can be used for the payment, one containing details of the actual order (such as items bought and shipping options), and an optional object containing further options. the first of these three (supportedinstruments in the example below) contains a data property that has to conform to the structure defined by the basiccardrequest dictionary. ...
...And 66 more matches

BluetoothRemoteGATTDescriptor - Web APIs
805f9b34fb' for theclient characteristic configuration descriptor. bluetoothremotegattdescriptor.valueread only returns the currently cached descriptor value. this value gets updated when the value of the descriptor is read. methods bluetoothremotegattdescriptor.readvalue() returns a promise that resolves to an arraybuffer holding a duplicate of the value property if it is available and supported. otherwise it throws an error. bluetoothremotegattdescriptor.writevalue() sets the value property to the bytes contained in an arraybuffer and returns a promise. specifications specification status comment web bluetooththe definition of 'bluetoothremotegattdescriptor' in that specification. draft initial definition. browser compatibility the compat...
...his page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetbluetoothremotegattdescriptor experimentalchrome full support 57notes full support 57notes notes macos only. full support 57notes disabled notes linux and versions of windows earlier than 10.disabled from version 57: this feature is behind the #enable-experimental-web-platform-features preference (needs to be set to enabled). to change...
...port 57notes notes macos only. full support 57notes disabled notes linux and versions of windows earlier than 10.disabled from version 57: this feature is behind the #enable-experimental-web-platform-features preference (needs to be set to enabled). to change preferences in chrome, visit chrome://flags. full support 70notes notes windows 10.edge full support ≤79notes full support ≤79notes notes macos only. ...
...And 65 more matches

IDBDatabase - Web APIs
the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...uctured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ease check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 65 more matches

Permissions - Web APIs
the permissions interface of the permissions api provides the core permission api functionality, such as methods for querying and revoking permissions methods permissions.query() returns the user permission status for a given api. permissions.request() requests permission to use a given api. this is not currently supported in any browser. permissions.requestall() requests permission to use a given set of apis. this is not currently supported in any browser. permissions.revoke() revokes the permission currently set on a given api. example navigator.permissions.query({name:'geolocation'}).then(function(result) { if (result.state === 'granted') { showlocalnewswithgeolocation(); } else if (result.state === 'prompt') { showbuttontoenablelocalnews(); } // don't do a...
... if (result.state === 'granted') { showlocalnewswithgeolocation(); } else if (result.state === 'prompt') { showbuttontoenablelocalnews(); } // don't do anything if the permission was denied. }); specification specification status comment permissionsthe definition of 'permissions' in that specification. working draft initial definition. browser support the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetpermissionschrome f...
... the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 65 more matches

IDBTransaction - Web APIs
the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...e check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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Index
gecko is created. if the component uses only "frozen" xpcom interfaces, there is a good chance the same binary component will work with different versions of gecko (version 1.8 and 1.9, for example). the more likely case is that the component uses "unfrozen" interfaces and those interfaces can change between gecko versions. this can create a difficult situation for extension developers trying to support multiple gecko versions (firefox 2 and 3, for example). 6 creating a python xpcom component guide, needshelp, pyxpcom, xpcom, xpcom:language bindings creating applications with mozilla already provides a tutorial for making a simple javascript or c++ component (implementing the nsisimple interface). here is how to make the same component in python using pyxpcom. 7 ...
...to 2.0. 98 xpcom guide add-ons, extensions, guide, landing, mozilla, xpcom these articles provide tutorials and usage documentation for xpcom, including how to use it in your own projects and how to build xpcom components for your firefox add-ons and the like. 99 avoiding leaks in javascript xpcom components add-ons, developing mozilla, extensions, mozilla, needsupdate, obsolete, xpcom, xpcom:language bindings, xpconnect programmers writing and reviewing javascript code in mozilla should understand how code using xpcom in javascript can leak so that they can avoid leaks. this document attempts to help them do so, first by explaining the underlying concepts, and second by describing a number of common javascript patterns that cause leaks. 100 ...
...r it with mozilla - prompts a discussion of the relationship between components and modules, of xpcom interfaces, and of the registration process in general. 108 resources guide, xpcom this last section of the book provides a list of resources referred to in the tutorial and other links that may be useful to the gecko developer. 109 setting up the gecko sdk needsupdate, tutorial, xpcom this chapter provides basic setup information for the gecko software development kit (sdk) used to build the weblock component in this tutorial. the following four sections tell the developer how to download and organize the gecko sdk and create a new project in which components like weblock can be created. 110 starting weblock xpcom in this chapter...
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MathML Torture Test
its</option> </select> <br/> </p> <table> <tr> <td></td> <th scope="col">as rendered by tex</th> <th scope="col">as rendered by your browser</th></tr> <tr> <td>1</td> <td><img src="https://udn.realityripple.com/samples/45/d5a0dbbca3.png" width="38" height="22" alt="texbook, 16.2-16.3" /></td> <td> <math display="block"> <mrow> <msup> <mi>x</mi> <mn>2</mn> </msup> <msup> <mi>y</mi> <mn>2</mn> </msup> </mrow> </math> </td></tr> <tr> <td>2</td> <td><img src="https://udn.realityripple.com/samples/b8/da4a50ea34.png" width="30" height="17" alt="texbook, 16.2-16.3" /></td> <td> <math display="block"> <!-- ...
... <mn>2</mn><none/> </mmultiscripts> </mrow> </math> </td></tr> <tr> <td>3</td> <td><img src="https://udn.realityripple.com/samples/8a/1d0e6e073c.png" width="58" height="47" alt="texbook, 17-17.1" /></td> <td> <math display="block"> <mrow> <mfrac> <mrow> <mi>x</mi> <mo>+</mo> <msup> <mi>y</mi> <mn>2</mn> </msup> </mrow> <mrow> <mi>k</mi> <mo>+</mo> <mn>1</mn> </mrow> </mfrac> </mrow> </math> </td></tr> <tr> <td>4</td> <td><img src="https://udn.realityripple.com/samples/a7/27acbeabcf.png" width="76" height="25" alt="t...
...mi>k</mi> <mo>+</mo> <mn>1</mn> </mrow> </mfrac> </mrow> </math> </td></tr> <tr> <td>4</td> <td><img src="https://udn.realityripple.com/samples/a7/27acbeabcf.png" width="76" height="25" alt="texbook, 17-17.1" /></td> <td> <math display="block"> <mrow> <mi>x</mi> <mo>+</mo> <msup> <mi>y</mi> <mfrac> <mn>2</mn> <mrow> <mi>k</mi> <mo>+</mo> <mn>1</mn> </mrow> </mfrac> </msup> </mrow> </math> </td></tr> <tr> <td>5</td> <td><img src="https://udn.realityripple.com/samples/d2/921226dd85.png" width="30" height="42" alt=...
...And 54 more matches

min-width - CSS: Cascading Style Sheets
ity the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ctured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ut https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 50 more matches

<textarea> - HTML: Hypertext Markup Language
ment for accessibility purposes a name attribute to set the name of the associated data point submitted to the server when the form is submitted. rows and cols attributes to allow you to specify an exact size for the <textarea> to take. setting these is a good idea for consistency, as browser defaults can differ. default content entered between the opening and closing tags. ...
...the non-deprecated values are available in ios 5 and later. ...
...lity the compatibility table in this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internettextareachrome full support yesedge full support 12firefox full support yesnotes full support yesnotes notes before firefox 6, when a <textarea> was focused, the insertion point was placed at the end of the text by default. other major browsers place the ins...
...And 50 more matches

Index
found 353 pages: # page tags and summary 1 network security services jss, nss, needsmigration network security services (nss) is a set of libraries designed to support cross-platform development of security-enabled client and server applications. applications built with nss can support ssl v3, tls, pkcs #5, pkcs #7, pkcs #11, pkcs #12, s/mime, x.509 v3 certificates, and other security standards. 2 an overview of nss internals api, intermediate, intro, nss, tools a high-level overview to the internals of network security services (nss) software developed by the mozilla.org projects traditionally used its own implementation of security protocols and cryptographic algorithms, originally called netscape security services, nowada...
... software developed by the mozilla.org projects traditionally used its own implementation of security protocols and cryptographic algorithms, originally called netscape security services, nowadays called network security services (nss). nss is a library written in the c programming language. it's free and open source software, and many other software projects have decided to use it. in order to support multiple operating systems (os), it is based on a cross platform portability layer, called the netscape portable runtime (nspr), which provides cross platform application programming interfaces (apis) for os specific apis like file system access, memory management, network communication, and multithreaded programming. nss offers lots of functionality; we'll walk through the list of modules...
...txt is used. only nss is allowed to access and manipulate these database files directly; a programmer using nss must go through the apis offered by nss to manipulate the data stored in these files. the programmer's task is to initialize nss with the required parameters (such as a database), and nss will then transparently manage the database files. most of the time certificates and keys are supposed to be stored in the nss database. therefore, after initial import or creation, the programmer usually doesn't deal with their raw bytes. instead, the programmer will use lookup functions, and nss will provide an access handle that will be subsequently used by the application's code. those handles are reference counted. nss will usually create an in-memory (ram) presentation of certificates, ...
...And 48 more matches

Gecko info for Windows accessibility vendors
this faq explains how makers of windows screen readers, voice dictation packages and magnification software can support gecko-based software. the base of our support for these products is msaa (microsoft active accessibility), external readonly dom support, and the keyboard api/user interface. definitions here are some basic definitions that you'll need for this document to make sense: gecko: the rendering engine for firefox, thunderbird, nvu, mozilla seamonkey and other applications. gecko is the internal engine that mozilla uses to render any kind of web content. it supports html, xhtml, cascading style sheets (css) and the document object model (dom). microsoft active accessibility (msaa) an api devised by microsoft so that acce...
...if you seriously need to understand msaa, you'll need to read the docs on msdn and play with the sample apps and code that come with msaa sdk 1.3. (i recommend sdk 1.3 because the msaa sdk 2.0 doesn't come with the source code to the testing tools. ...
...dom node, or vice-versa, queryservice() will return null. anything that is focusable or conveys important information about the structure of the document is exposed in the msaa tree of iaccessibles. windows applications based on the gecko layout engine gecko is a rendering engine that mozilla, netscape and other new browsers use. ...
...And 47 more matches

Starting WebLock
m is a good way for objects to pass messages to each other without the objects having explicit knowledge of one another. usually, there is one object notifying a group of observers. for example, an object may be created and have its observe method called at startup, or it may register to be notified prior to xpcom shutdown. the method at the core of this interface is observe: void observe(in nsisupports asubject, in string atopic, in wstring adata); there aren't really any restrictions on what the three parameters (asubject, atopic and adata) may represent. these parameters are defined according to the event being observed. for example, in the case of the xpcom shutdown observation, asubject and adata are not defined, and atopic is defined as the string "xpcom-sh...
... a generic interface for passing messages between two or more objects without defining a specific frozen interface, and it's one of the ways in which extensibility is built into xpcom. the implementation of the nsiobserver interface in the weblock component is similar to the implementation for the nsifactory interface. ...
...or more objects without defining a specific frozen interface, and it's one of the ways in which extensibility is built into xpcom. the implementation of the nsiobserver interface in the weblock component is similar to the implementation for the nsifactory interface. ...
...And 45 more matches

max-width - CSS: Cascading Style Sheets
ity the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ctured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ut https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 40 more matches

Media container formats (file types) - Web media technologies
as well as their benefits, limitations, and ideal use cases. webrtc does not use a container at all. instead, it streams the encoded audio and video tracks directly from one peer to another using mediastreamtrack objects to represent each track. see codecs used by webrtc for information about codecs commonly used for making webrtc calls, as well as browser compatibility information around codec support in webrtc. common container formats while there are a vast number of media container formats, the ones listed below are the ones you are most likely to encounter. some support only audio while others support both audio and video. the mime types and extensions for each are listed.the most commonly used containers for media on the web are probably mpeg-4 (mp4), quicktime movie (mov), and the ...
...for example, an ogg file with only an opus audio track is sometimes referred to as an opus file, and might even have the extension .opus. ...
...k encoded using mpeg-1 audio layer iii encoding. these files use the audio/mp3 mime type and the .mp3 extension, even though their containers are just mpeg. index of media container formats (file types) to learn more about a specific container format, find it in this list and click through to the details, which include information about what the container is typically useful for, what codecs it supports, and which browsers support it, among other specifics. codec name (short) full codec name browser compatibility1 3gp third generation partnership firefox for android adts audio data transport stream firefox2 flac free lossless audio codec chrome 56, edge 16, firefox 51, safari 11 mpeg / mpeg-2 moving picture experts...
...And 40 more matches

Guide to the Fullscreen API - Web APIs
ment (checking it prefixed with both moz, ms, or webkit). if it's null, the document is currently in windowed mode, so we need to switch to fullscreen mode. switching to fullscreen mode is done by calling element.requestfullscreen(). if fullscreen mode is already active (fullscreenelement is non-null), we call document.exitfullscreen(). prefixing note: currently, only firefox 64 and chrome 71 supports this unprefixed. for the moment not all browsers are implementing the unprefixed version of the api (for vendor agnostic access to the fullscreen api you can use fscreen). here is the table summarizing the prefixes and name differences between them: standard webkit (safari) / blink (chrome & opera) / edge gecko (firefox) internet explorer document.fullscreen...
...patibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ta. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 39 more matches

:is() (:matches(), :any()) - CSS: Cascading Style Sheets
note: :matches() was renamed to :is() in csswg issue #3258. the :is() css pseudo-class function takes a selector list as its argument, and selects any element that can be selected by one of the selectors in that list. this is useful for writing large selectors in a more compact form. note that currently browsers support this functionality as :matches(), or through an older, prefixed pseudo-class — :any(), including older versions of chrome, firefox, and safari. :any() works in exactly the same way as :matches()/:is(), except that it requires vendor prefixes and doesn't support complex selectors. /* selects any paragraph inside a header, main or footer element that is being hovered */ :is(header, main, footer) p:hover { color: red; cursor: pointer; } /* the above is equivalen...
...for example, the following css: /* 3-deep (or more)...
... difference between :is() and :where() the diffference between the two is that :is() counts towards the specifi...
...And 38 more matches

MathML Accessibility in Mozilla
this table below provides a list of mathml constructions and how they are read in mozilla applications for various platforms: windows: mathml support is provided by nvda, which actually delegates math reading to the proprietary mathplayer plugin. we started exposing generic accessible objects for mathml in bug 920547 and so these can be retrieved by nvda starting with gecko 27.0 (firefox 27.0 / thunderbird 27.0 / seamonkey 2.24). mozilla and nvda developers essentially do not have control on how mathematical formulas are read, please contact design science for any inquiries. mac: mathml support is provided by voiceover. ...
...ing with gecko 27.0 (firefox 27.0 / thunderbird 27.0 / seamonkey 2.24). mozilla and nvda developers essentially do not have control on how mathematical formulas are read, please contact design science for any inquiries. mac: mathml support is provided by voiceover. in bug 1175269 and bug 1001641, we relied on the webkit's nsaccessibility mathml tree to expose the main constructions. hence basic support is available in gecko 41.0 (firefox 41.0 / thunderbird 41.0 / seamonkey 2.38) and we are still trying to keep in sync with webkit/voiceover. note that voiceover is proprietary so we do not have control on improvements to mathml accessibility in voiceover. linux: mathml support is provided by the development version of orca. we try to keep in sync with webkit/atk/orca developments. at the mom...
...the table gives the output in mode "utterance" and description spoken last. note that this is still very experimental. ...
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WebAssembly - JavaScript
ibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...b.com/mdn/browser-compat-data and send us a pull request. ...
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Image file type and format guide - Web media technologies
in this guide, we'll cover the image file types generally supported by web browsers, and provide insights that will help you select the most appropriate formats to use for your site's imagery. common image file types there are many image file formats in the world. however, the ones listed below are generally recognized as usable on the web, though bmp is generally not recommended as browser support is potentially constrained; it should usually be avoided for web content. abbreviation file format mime type file extension(s) browser compatibility apng animated portable network graphics image/apng .apng chrome, edge, firefox, opera, safari bmp bitmap file image/bmp .bmp chrome, edge, firefox, internet explorer, opera, safari...
... in the tables below, the term bits per component refers to the number of bits used to represent each color component. for example, an rgb color depth of 8 indicates that each of the red, green,...
... in the tables below, the term bits per component refers to the number of bits used to represent each color component. ...
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WebAssembly
ibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...b.com/mdn/browser-compat-data and send us a pull request. ...
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max-height - CSS: Cascading Style Sheets
ty the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
... https://github.com/mdn/browser-compat-data and send us a pull request. ...
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IDBFactory - Web APIs
y the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ructured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...lease check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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IDBKeyRange - Web APIs
the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...uctured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ease check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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Migrate apps from Internet Explorer to Mozilla - Archive of obsolete content
introduction when netscape started the mozilla browser, it made the conscious decision to support w3c standards. as a result, mozilla is not fully backwards-compatible with netscape navigator 4.x and microsoft internet explorer legacy code; for example, mozilla does not support <layer> as i will discuss later. browsers, like internet explorer 4, that were built before the conception of w3c standards inherited many quirks. in this article, i will describe mozilla's quirks mode, which provides strong backwards html compatibility with internet explorer and other legacy browsers. i'll also cover nonstandard technologies, such as xmlhttprequest and rich text editing, that mozilla does support because no w3c equivalent existed at the time. they include: html 4.01, xhtml 1.0 and xhtml 1...
...lt 1.0 xml path language: xpath 1.0 resource description framework: rdf simple object access protocol: soap 1.1 ecma-262, revision 3 (javascript 1.5): ecma-262 general cross-browser coding tips even though web standards do exist, different browsers behave differently (in fact, the same browser may behave differently depending on the platform). many browsers, such as internet explorer, also support pre-w3c apis and have never added extensive support for the w3c-compliant ones. before i go into the differences between mozilla and internet explorer, i'll cover some basic ways you can make a web application extensible in order to add new browser support later. since different browsers sometimes use different apis for the same functionality, you can often find multiple if() else() blocks ...
...nt browsers sometimes use different apis for the same functionality, you can often find multiple if() else() blocks throughout the code to differentiate between the browsers. the following code shows blocks designated for internet explorer: . . . ...
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FileSystemFlags - Web APIs
ity table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...e to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...mobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetfilesystemflags experimentalchrome full support 13prefixed full support 13prefixed prefixed implemented with the vendor prefix: webkitedge full support ≤79prefixed full support ≤79prefixed prefixed implemented with the vendor prefix: webkitfirefox full support 50ie no support noopera no support nosafari no support ...
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URLUtilsReadOnly - Web APIs
the compatibility table in this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ed data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ttps://github.com/mdn/browser-compat-data and send us a pull request. ...
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Codecs used by WebRTC - Web media technologies
et users communicate in real time, using audio and/or video as well as optional data and other information. to communicate, the two devices need to be able to agree upon a mutually-understood codec for each track so they can successfully communicate and present the shared media. ...
...ther codecs that some or all browsers support for webrtc. containerless media webrtc uses bare mediastreamtrack objects for each track being shared from one peer to another, without a container or even a mediastream associated with the tracks. which codecs can be within those tracks is not mandated by the webrtc specification. however, rfc 7742 specifies that all webrtc-compatible browsers must support vp8 and h.264's constrained baseline profile for video, and rfc 7874 specifies that browsers must support at least the opus codec as well as g.711's pcma and pcmu formats. these two rfcs also lay out options that must be supported for each codec, as well as specific user comfort features such as echo cancelation. this guide reviews the codecs that browsers are required to implement as well a...
... while compression is always a necessity when dealing with media on the web, it's of additional importance when videoconferencing in order to ensure that the participants are able to communicate without lag or interruptions. ...
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Browser Feature Detection - Archive of obsolete content
this article has generally never been more than a way to show off firefox web compatibility, rather than something truly informative in a broader sense. ...
... this article has generally never been more than a way to show off firefox web compatibility, rather than something truly informative in a broader sense. ...
... this article has generally never been more than a way to show off firefox web compatibility, rather than something truly informative in a broader sense. therefore, given that it's also badly out of date, it's been archived. ...
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FileSystemEntry - Web APIs
ity table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...hromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetfilesystementry experimentalchrome full support 8alternate name full support 8alternate name alternate name uses the non-standard name: entryedge full support 79prefixed full support 79prefixed prefixed implemented with the vendor prefix: webkitfirefox full support 50ie no support noopera no support nosafari full support ...
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Implementing a Microsoft Active Accessibility (MSAA) Server - Accessibility
practical tips for developers and how mozilla does it contents this document is for developers working to support msaa in an application in order to make it accessible with 3rd party assistive technologies, as well as for hackers wishing to be involved in mozilla's msaa support specifically. if you're implementing controls/widgets, you should also see the accessible toolkit checklist. if you're interested in more about gecko's msaa implementation, read gecko info for windows accessibility vendors to learn how msaa clients can utilize gecko's msaa support. intro: what is msaa? msaa is the microsoft active accessibility (msaa) api, used on windows operating systems to support assistive technologies for users with disabilities. third party assistive technology, such as screen read...
...ing mode, with a variety of features such as ticker mode where text is streamed on a single line. finally, voice dictation software needs to know what's in the current document or ui in order to implement "say what you see" kinds of features. on microsoft windows, these kinds of assistive technology acquire this necessary information via a combination of hacks, msaa and proprietary doms. msaa is supposed to be the "right way" for accessibility aids to get information, but sometimes the hacks are more effective. for example, screen readers look for screen draws of a vertical blinking line, to determine the location of the caret. without doing this, screen readers would not be able to let the user know where there caret has moved to in most programs, because so many applications do not use the...
...he hacks are more effective. for example, screen readers look for screen draws of a vertical blinking line, to determine the location of the caret. without doing this, screen readers would not be able to let the user know where there caret has moved to in most programs, because so many applications do not use the system caret (gecko does not). this is so commonly done, that no one even bothers to support the msaa caret, after all the hack is general solution works with pretty much all applications. msaa provides information in several different ways: a com interface (iaccessible) that allows applications to expose the tree of data nodes that make up each window in the user interface currently being interacted with and custom interface extensions via interfaces via queryinterface and quer...
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position - CSS: Cascading Style Sheets
lity the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...uctured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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Modularization techniques - Archive of obsolete content
s are c++ pure virtual interfaces. a pure virtual interface is simply a class where every method is defined as pure virtual, that is: virtual int foo(int bar) = 0; pure virtual interfaces provide an easy mechanism for passing function tables between modules that may reside in separate, possibly dynamically loaded, libraries. each interface is assigned a unique interface identifier, or iid. nsisupports the key interface in our model is the nsisupports interface, our equivalent to com's iunknown interface. nsisupports provides two key features, interface interrogation and reference counting. interface interrogation is a simple, uniform mechanism for determining which interfaces a object supports, and for hiding the the mechanics of how the object was implemented. interface interrogation i...
... reference counting is performed using the addref() and release() methods. an objects reference count generally starts at zero. addref() increments that reference count, and release() decrements it. ...
...rally free itself. a successful queryinterface() will call addref() on the requested interface before returning. both addref() and release() return the resulting reference count. the convenience macros ns_addref() and ns_release() are preferred over calling addref and release directly. in debug builds, these macros provide useful reference counting logs. use them wherever possible. /* * the nsisupports interface */ class nsisupports { public: ns_imethod queryinterface(const nsiid &aiid, void **aresult) = 0; ns_imethod_(nsrefcnt) addref(void) = 0; ns_imethod_(nsrefcnt) release(void) = 0; }; the ns_imethod and ns_imethod_(type) macros are basically shorthand for virtual nsresult and virtualtype. on windows they expand to virtual nsresult __stdcal...
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PushEvent - Web APIs
atibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...f you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...b.com/mdn/browser-compat-data and send us a pull request. desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetpushevent experimentalchrome full support 42edge full support 16disabled full support 16disabled disabled from version 16: this feature is behind the enable service workers preference. ...
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font-variant - CSS: Cascading Style Sheets
the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...red data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...https://github.com/mdn/browser-compat-data and send us a pull request. ...
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MSGestureEvent - Web APIs
bility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...t https://github.com/mdn/browser-compat-data and send us a pull request. ...
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Introduction to SSL - Archive of obsolete content
eb for authenticated and encrypted communication between clients and servers. the ssl protocol ciphers used with ssl the ssl handshake the new internet engineering task force (ietf) standard protocol called transport layer security (tls) is based on ssl. the details of the protocol are available in request for comments (rfc): 2246,the tls protocol version 1.0. some red hat products already support tls. most other red hat products plan to support the protocol in future versions. this document is primarily intended for administrators of red hat server products, but the information it contains may also be useful for developers of applications that support ssl. the document assumes that you are familiar with the basic concepts of public-key cryptography, as summarized in "introduction to ...
...duction to public-key cryptography." the ssl protocol the transmission control protocol/internet protocol (tcp/ip) governs the transport and routing of data over the internet. other protocols, such as the hypertext transport protocol (http), lightweight directory access protocol (ldap), or internet messaging access protocol (imap), run "on top of" tcp/ip in the sense that they all use tcp/ip to support typical application tasks such as displaying web pages or running email servers. the ssl protocol runs above tcp/ip and below higher-level protocols such as http or imap. it uses tcp/ip on behalf of the higher-level protocols, and in the process allows an ssl-enabled server to authenticate itself to an ssl-enabled client, allows the client to authenticate itself to the server, and allows b...
...hake protocol involves using the ssl record protocol to exchange a series of messages between an ssl-enabled server and an ssl-enabled client when they first establish an ssl connection. this exchange of messages is designed to facilitate the following actions: authenticate the server to the client. ...
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Handling common JavaScript problems - Learn web development
ie had jscript and also offered vbscript as an option), and while at least javascript and jscript were compatible to some degree (both based on the ecmascript specification), things were often implemented in conflicting, incompatible ways, causing developers many nightmares. such incompatibility problems persisted well into the early 2000s, as old browsers were still being used and still needed supporting. this is one of the main reasons why libraries like jquery came into existence — to abstract away differences in browser implementations (e.g. see the code snippet in how to make an http request) so developers only have to write one simple bit of code (see jquery.ajax()). jquery (or whatever library you are using) will then handle the differences in the background, so you don't have to. ...
...tence — to abstract away differences in browser implementations (e.g. see the code snippet in how to make an http request) so developers only have to write one simple bit of code (see jquery.ajax()). jquery (or whatever library you are using) will then handle the differences in the background, so you don't have to. things have improved significantly since then; modern browsers do a good job of supporting "classic javascript features", and the requirement to use such code has diminished as the requirement to support older browsers has lessened (although bear in mind that they have not gone away altogether). these days, most cross-browser javascript problems are seen: when poor-quality browser-sniffing code, feature-detection code, and vendor prefix usage block browsers from running code...
...command installs jshint: npm install -g jshint you can then point these tools at javascript files you want to lint, for example: you can also use these tools with a task runner/build tool such as gulp or webpack to automatically lint your javascript during development. (see using a task runner to automate testing tools in a later article.) see eslint integrations for eslint options; jshint is supported out of the box by grunt, and also has other integrations available, e.g. jshint loader for webpack. note: eslint takes a bit more setup and configuration than jshint, but it is more powerful too. browser developer tools browser developer tools have many useful features for helping to debug javascript. for a start, the javascript console will report errors in your code. make a local co...
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Python binding for NSS
nss is an alternative to openssl and used extensively by major software projects. nss is fips-140 certified. nss is built upon nspr because nspr provides an abstraction of common operating system services, particularly in the areas of networking and process management. ...
... and is exposed via the standard python methodology. this documentation is available via the numerous python documentation extraction tools. also see the generated html documentation provided with each release. nss/nspr structs are exposed as python objects. nss/nspr functions which operate on a nss/nspr object (i.e. struct) become methods of that object. nss/nspr objects which are collections support the python iteration protocol. in other words they can be iterated over, indexed by position, or used as slices. nss/nspr objects whose collection elements can be referenced by name support associative indexing. nss/nspr objects which have "get" and "set" api function calls are exposed as python properties. all nss/nspr python objects can print their current value by evaluting the python o...
...the python global interpreter lock (gil) is released prior to calling nss/nspr c functions and reaquired after the nss/nspr c function returns. this allows other python threads to execute during the time a nss/nspr function is progress in another thread. ...
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Bytecode Descriptions
expr. emitting the same bytecode for these two expressions would be a bug. per spec, the latter throws a referenceerror if x doesn't exist. format: jof_ic pos stack: val ⇒ (+val) the unary + operator. +val doesn't do any actual math. it just calls tonumber(val). the conversion can call .tostring()/.valueof() methods and can throw. the result on success is always a number. (per spec, unary - supports bigints, but unary + does not.) format: jof_ic neg stack: val ⇒ (-val) the unary - operator. convert val to a numeric value, then push -val. the conversion can call .tostring()/.valueof() methods and can throw. the result on success is always numeric. format: jof_ic bitnot stack: val ⇒ (~val) the bitwise not operator (~). val is converted to an integer, then bitwise negated. the co...
...ormat: jof_elem, jof_checkstrict hasown stack: id, obj ⇒ (obj.hasownproperty(id)) push true if obj has an own property id. note that obj is the top value, like jsop::in. this opcode is not used for normal js. self-hosted code uses it by calling the intrinsic hasown(id, obj). for example, object.prototype.hasownproperty is implemented this way (see js/src/builtin/object.js). ...
...jof_elem, jof_checkstrict hasown stack: id, obj ⇒ (obj.hasownproperty(id)) push true if obj has an own property id. note that obj is the top value, like jsop::in. this opcode is not used for normal js. self-hosted code uses it by calling the intrinsic hasown(id, obj). for example, object.prototype.hasownproperty is implemented this way (see js/src/builtin/object.js). ...
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An Overview of XPCOM
ndently of one another. in order to allow interoperability between components within an application, xpcom separates the implementation of a component from the interface, which we discuss in interfaces. ...
...on of these components, services that help the developer write modular cross-platform code, and versioning support, so that components can be replaced or upgraded without breaking or having to recreate the application. using xpcom, developers create components that can be reused in different applications or that can be replaced to change the functionality of existing applications. ...
...() = 0; }; the implementation can then derive from this class and implement the virtual method. clients of this code can then use a factory design pattern to create the object (see factories) and further encapsulate the implementation. in xpcom, clients are shielded from the inner workings of components in this way and rely on the interface to provide access to the needed functionality. ...
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nsIMsgFolder
the nsimsgfolder interface is used to interact with folders in thunderbird. this page is out of date. check //github.com/realityripple/uxp/blob/master/mailnews/base/public/nsimsgfolder.idl for the newer methods (esp. isspecialfolder and such). ...
...nd such). ...
...nsimsgwindow msgwindow); void createsubfolder(in astring foldername, in nsimsgwindow msgwindow); nsimsgfolder addsubfolder(in astring foldername); void createstorageifmissing(in nsiurllistener urllistener); void compact(in nsiurllistener alistener, in nsimsgwindow amsgwindow); void compactall(in nsiurllistener alistener, innsimsgwindow amsgwindow,in nsisupportsarray afolderarray, in boolean acompactofflinealso,in nsisupportsarray aofflinefolderarray); void compactallofflinestores(in nsimsgwindow amsgwindow,in nsisupportsarray aofflinefolderarray); void emptytrash(in nsimsgwindow amsgwindow, in nsiurllistener alistener); void rename(in astring name, in nsimsgwindow msgwindow); void renamesubfolders( in nsimsgwindo...
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break-before - CSS: Cascading Style Sheets
of 'break-before' in that specification. working draft initial definition. extends the css 2.1 page-break-before property to handle both page and column breaks. browser compatibility the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...tibility the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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CSS3 - Archive of obsolete content
les already became a standard as a w3c recommendation. these should be no more changes. css color module level 3 recommendation since june 7th, 2011 adds the opacity property, and the hsl(), hsla(), rgba() and rgb() functions to create <color> values. it also defines the currentcolor keyword as a valid color. ...
...fines the currentcolor keyword as a valid color. the transparent color is now a real color (thanks to the support for the alpha channel) and is a now an alias for rgba(0,0,0,0.0). it deprecates the system-color keywords that shouldn't be used in a production environment anymore. css namespaces module recommendation since september 29th, 2011 adds the support for the xml namespaces by defining the notion of css qualified name, using the ' | ' syntax and adding the @namespace css at-rule. selectors level 3 recommendation since september 29th, 2011 adds: substring matching attribute selectors, e[attribute^="value"], e[attribute$="value"], e[attribute*="value"] . new pseudo-classes: :target, :enabl...
... only screen and (color) . media queries are not only used in css document but also in some attributes of html elements, like the media attribute of the <link> element. the next iteration of this specification is in the work, allowing to tailor a web site regarding the input methods available on the user agent, with new media features like hover or pointer. detection of ecmascript support, using the script media features is also proposed. css style attributes recommendation since november 7th, 2013 formally defines the syntax of the content of the html style global attribute. css fonts module level 3 candidate recommendation since september 20th, 2018 amends the css2.1 font matching algorithm to be closer to what is real...
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GamepadEvent - Web APIs
; specifications specification status comment gamepadthe definition of 'gamepadevent' in that specification. ...
...t gamepadthe definition of 'gamepadevent' in that specification. ...
...t specification. ...
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sslerr.html
re retrieved using the nspr function pr_geterror. in addition to the error codes defined by nspr, pr_geterror retrieves the error codes described in this chapter. ssl error codes sec error codes ssl error codes table 8.1 error codes defined in sslerr.h constant value description ssl_error_export_only_server -12288 "unable to communicate securely. ...
...des defined by nspr, pr_geterror retrieves the error codes described in this chapter. ssl error codes sec error codes ssl error codes table 8.1 error codes defined in sslerr.h constant value description ssl_error_export_only_server -12288 "unable to communicate securely. peer does not support high-grade encryption." the local system was configured to support the cipher suites permitted for domestic use. the remote system was configured to support only the cipher suites permitted for export use. ssl_error_us_only_server -12287 "unable to communicate securely. peer requires high-grade encryption which is not supported." the remote system was configured to support the cipher suites permitted for domestic use. the local ...
... ssl_error_no_cypher_overlap -12286 "cannot communicate securely with peer: no common encryption algorithm(s)." the local and remote systems share no cipher suites in common. this can be due to a misconfiguration at either end. ...
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ByteLengthQueuingStrategy - Web APIs
on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetbytelengthqueuingstrategy experimentalchrome full support 59edge full support 16firefox full support 57disabled full support 57disabled disabled from version 57: this feature is behind the dom.streams.enabled preference (needs to be set to true) and the javascript.options.streams preference (needs to be set to true). to change preferences in firefox, ...
...ox full support 57disabled full support 57disabled disabled from version 57: this feature is behind the dom.streams.enabled preference (needs to be set to true) and the javascript.options.streams preference (needs to be set to true). ...
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requiredFeatures - SVG: Scalable Vector Graphics
this provides a way to design svg that gracefully falls back when features aren't available. if the attribute is not present, then its implicit evaluated value is true. ...
...this provides a way to design svg that gracefully falls back when features aren't available. if the attribute is not present, then its implicit evaluated value is true. ...
...ject>, <g>, <image>, <line>, <mask>, <path>, <pattern>, <polygon>, <polyline>, <rect>, <set>, <svg>, <switch>, <text>, <textpath>, <tref>, <tspan>, <use> html, body, svg { height: 100%; } text { fill: white; } <svg viewbox="0 0 250 45" xmlns="http://www.w3.org/2000/svg"> <g> <rect fill="forestgreen" x="10" y="10" height="25" width="230" /> <text x="20" y="27">requiredfeatures supported</text> </g> <g requiredfeatures=""> <rect fill="crimson" x="10" y="10" height="25" width="230" /> <text x="20" y="27">requiredfeatures not supported</text> </g> </svg> usage notes value <list-of-features> default value true if not defined, false if null or empty string as value animatable no <list-of-features> this is a list o...
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Handling common HTML and CSS problems - Learn web development
previous overview: cross browser testing next with the scene set, we'll now look specifically at the common cross-browser problems you will come across in html and css code, and what tools can be used to prevent problems from happening, or fix problems that occur. this includes linting code, handling css prefixes, using browser dev tools to track down problems, using polyfills to add support into browsers, tackling responsive design problems, and more. prerequisites: familiarity with the core html, css, and javascript languages; an idea of the high level principles of cross browser testing. objective: to be able to diagnose common html and css cross browser problems, and use appropriate tools and techniques to fix them. the trouble with html and css ...
...ften developers don't take them seriously, in terms of making sure the code is well-crafted, efficient, and semantically describes the purpose of the features on the page. in the worst cases, javascript is used to generate the entire web page content and style, which makes your pages inaccessible, and less performant (generating dom elements is expensive). in other cases, nascent features are not supported consistently across browsers, which can make some features and styles not work for some users. responsive design problems are also common — a site that looks good in a desktop browser might provide a terrible experience on a mobile device, because the content is too small to read, or perhaps the site is slow because of expensive animations. let's go forth and look at how we can reduce cr...
..., in firefox the css inspector will show css declarations that aren't applied crossed out, with a warning triangle. hovering the warning triangle will provide a descriptive error message: other browser devtools have similar features. common cross browser problems now let's move on to look at some of the most common cross browser html and css problems. the main areas we'll look at are lack of support for modern features, and layout issues. older browsers not supporting modern features this is a common problem, especially when you need to support old browsers (such as old ie versions) or you are using features that are implemented using css prefixes. in general, most core html and css functionality (such as basic html elements, css basic colors and text styling) works across most browser...
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WebAssembly.Table - JavaScript
compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...a. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
.../github.com/mdn/browser-compat-data and send us a pull request. ...
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CountQueuingStrategy - Web APIs
able on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...e to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetcountqueuingstrategy experimentalchrome full support 59edge full support 16firefox full support 57disabled full support 57disabled disabled from version 57: this feature is behind the dom.streams.enabled preference (needs to be set to true) and the javascript.options.streams preference (needs to be set to true). to change preferences in firefox, ...
...ox full support 57disabled full support 57disabled disabled from version 57: this feature is behind the dom.streams.enabled preference (needs to be set to true) and the javascript.options.streams preference (needs to be set to true). ...
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FileReaderSync - Web APIs
the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...s://github.com/mdn/browser-compat-data and send us a pull request. ...
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Capabilities, constraints, and settings - Web APIs
what errors occur, and so forth. the result has been a lot of very fragile code, or a reliance on libraries which figure this stuff out for you, then implement polyfills to patch the holes in the implementation on your behalf. the twin concepts of constraints and capabilities let the browser and web site or app exchange information about what constrainable properties the browser's implementation supports and what values it supports for each one. this article discusses capabilities and constraints, as well as media settings, and includes an example we call the constraint exerciser. the constraint exerciser lets you experiment with the results of different constraint sets being applied to the audio and video tracks coming from the computer's a/v input devices (such as its webcam and microphone...
... settings, and includes an example we call the constraint exerciser. the constraint exerciser lets you experiment with the results of different constraint sets being applied to the audio and video tracks coming from the computer's a/v input devices (such as its webcam and microphone). overview the process works like this (using mediastreamtrack as an example): if needed, call mediadevices.getsupportedconstraints() to get the list of supported constraints, which tells you what constrainable properties the browser knows about. this isn't always necessary, since any that aren't known will simply be ignored when you specify them—but if you have any that you can't get by without, you can start by checking to be sure they're on the list. once the script knows whether the property or propert...
...t the list of supported constraints, which tells you what constrainable properties the browser knows about. this isn't always necessary, since any that aren't known will simply be ignored when you specify them—but if you have any that you can't get by without, you can start by checking to be sure they're on the list. once the script knows whether the property or properties it wishes to use are supported, it can then check the capabilities of the api and its implementation by examining the object returned by the track's getcapabilities() method; this object lists each supported constraint and the values or range of values which are supported. finally, the track's applyconstraints() method is called to configure the api as desired by specifying the values or ranges of values it wishes to us...
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NavigationPreloadManager - Web APIs
in this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
... contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...rowser-compat-data and send us a pull request. ...
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SVGCircleElement - Web APIs
e compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...s://github.com/mdn/browser-compat-data and send us a pull request. ...
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WritableStream - Web APIs
eam.close() closes the stream. writablestream.getwriter() returns a new instance of writablestreamdefaultwriter and locks the stream to that instance. while the stream is locked, no other writer can be acquired until this one is released. examples the following example illustrates several features of this interface. it shows the creation of the writablestream with a custom sink and an api-supplied queueing strategy. it then calls a function called sendmessage(), passing the newly created stream and a string. inside this function it calls the stream's getwriter() method, which returns an instance of writablestreamdefaultwriter. a foreach() call is used to write each chunk of the string to the stream. finally, write() and close() return promises that are processed to deal with success o...
...; }); }, close() { var listitem = document.createelement('li'); listitem.textcontent = "[message received] " + result; list.appendchild(listitem); }, abort(err) { console.log("sink error:", err); } }, queuingstrategy); sendmessage("hello, world.", writablestream); you can find the full code in our simple writer example. backpressure because of how backpressure is supported in the api, its implementation in code may be less than obvious. to see how backpressure is implemented look for three things. the highwatermark property, which is set when creating the counting strategy (line 35), sets the maximum amount of data that the writablestream instance will handle in a single write() operation. in this example, it's the maximum amount of data that can be sent t...
...lity table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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animation-direction - CSS: Cascading Style Sheets
ompatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ut https://github.com/mdn/browser-compat-data and send us a pull request. ...
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Implementing feature detection - Learn web development
prerequisites: familiarity with the core html, css, and javascript languages; an idea of the high-level principles of cross-browser testing. ...
... prerequisites: familiarity with the core html, css, and javascript languages; an idea of the high-level principles of cross-browser testing. objective: to understand what the concept of feature detection is, and be able to implement suitable solutions in css and javascript. ...
...ity with the core html, css, and javascript languages; an idea of the high-level principles of cross-browser testing. objective: to understand what the concept of feature detection is, and be able to implement suitable solutions in css and javascript. the concept of feature detection the idea behind feature detection is that you can run a test to determine whether a feature is supported in the current browser, and then conditionally run code to provide an acceptable experience both in browsers that do support the feature, and browsers that don't. if you don't do this, browsers that don't support the features you are using in your code won't display your sites properly and will just fail, creating a bad user experience. let's recap and look at the example we touched on in ...
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sslfnc.html
if you turn this option off, an attempt to establish a connection with a peer that only understands ssl v2 will fail. ssl_enable_tls is a peer of the ssl_enable_ssl2 and ssl_enable_ssl3 options. the ietf standard transport layer security (tls) protocol, rfc 2246, is a modified version of ssl3. it uses the ssl version number 3.1, appearing to be a "minor" revision of ssl 3.0. nss 2.8 supports tls in addition to ssl2 and ssl3. you can think of it as "ssl_enable_ssl3.1". see the description below for more information about this option. ssl_v2_compatible_hello tells the ssl library whether or not to send ssl3 client hello messages in ssl2-compatible format. if set to pr_true, it will; otherwise, it will not. factory setting is on (pr_true). see the description below for...
...sl session. they do not determine which cipher suites are actuallyenabled--that is, turned on and ready to use. to enable or disable a permitted cipher suite, use ssl_cipherprefsetdefault; but bear in mind that ssl_cipherprefsetdefault can't enable any cipher suite that is not explicitly permitted as a result of a call to one of the export policy functions. by default, none of the cipher suites supported by ssl are permitted. the functions nss_setdomesticpolicy, nss_setexportpolicy, and nss_setfrancepolicy permit the use of approved cipher suites for domestic, international, and french versions, respectively, of software products with encryption features. the policy settings permitted by these functions conform with current u.s. export regulations as understood by netscape (for products wit...
...s" as defined by the latest u.s. export regulations) and french import regulations. under some circumstances, you may be required to abide by the terms of an export license that permits more or fewer capabilities than those allowed by these three functions. in such cases, use ssl_cipherpolicyset to explicitly enable those cipher suites you may legally export. for descriptions of cipher suites supported by ssl, see introduction to ssl. applications must call one of the export policy functions before attempting to perform any cryptographic operations: nss_setdomesticpolicy nss_setexportpolicy nss_setfrancepolicy ssl_cipherpolicyset the following function is also described in this section: ssl_cipherpolicyget nss_setdomesticpolicy configures cipher suites to conform with...
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NotificationEvent - Web APIs
y table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
.../browser-compat-data and send us a pull request. ...
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aspect-ratio - CSS: Cascading Style Sheets
ility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ed data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...heck out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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break-after - CSS: Cascading Style Sheets
on of 'break-after' in that specification. working draft initial definition. extends the css 2.1 page-break-after property to handle both page and column breaks. browser compatibility the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...tibility the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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CSS property compatibility table for form controls - Learn web development
you may still face strange side effects in certain edge cases. partial while the property works, you may frequently face strange side effects or inconsistencies. you should probably avoid these properties unless you master those side effects first. ...
...you may still face strange side effects in certain edge cases. partial while the property works, you may frequently face strange side effects or inconsistencies. you should probably avoid these properties unless you master those side effects first. ...
...one; appearance: none; /* for internet explorer */ background: none; } compatibility tables global behaviors some behaviors are common to many browsers at a global level: border, background, border-radius, height using one of these properties can partially or fully turn off the native look & feel of widgets on some browsers. be careful when you use them. line-height this property is supported inconsistently across browsers and you should avoid it. text-decoration this property is not supported by opera on form widgets. text-overflow opera, safari, and ie9 do not support this property on form widgets. text-shadow opera does not support text-shadow on form widgets and ie9 does not support it at all. text fields see the text, search, and password input types. pro...
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Basics
when you left-click any individual entry, it should toggle between its expanded and unexpanded forms. you can also <a href="javascript:unexpand();">unexpand all</a> or <a href="javascript:expand();">expand all</a>. </p> <div> <math display="block"> <mtable> <mtr> <mtd> <mtable align="axis"...
... <a class="control" href="javascript:incrementinput('input12', 1);" title="increase input">+</a> <a class="control" href="javascript:incrementinput('input12',-1);" title="decrease input">-</a> <br/> (click these control buttons to see their effects.) </div> <p> each entry of the following matrix represents <math> <msup><mrow><mo>(</mo><mi>x</mi><mo>+</mo><mi>y</mi><mo>)</mo></mrow><mi>n</mi></msup> </math> for some <i>n</i>. when you left-click any individual entry, it should toggle between its expanded and unexpanded forms. you can also <a href="javascript:unexpand();">unexpand all</a> or <a href="javascript:expand();">expand all</a>. </p> <div> <math display="block"> <mtable> <mtr> <mtd> <mtable align="axis" columnalign="left left left"> <mtr> <mtd> <maction id="a11" actiontype="toggle"...
... <i>n</i>. when you left-click any individual entry, it should toggle between its expanded and unexpanded forms. you can also <a href="javascript:unexpand();">unexpand all</a> or <a href="javascript:expand();">expand all</a>. ...
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Creating the Component Code
registration alternatives a gecko embedding application may provide other ways to register xpcom components. xpinstall, the cross-platform installation technology that mozilla uses to install the browser and other components, is one such alternative. it is described further in packaging weblock. you should consult with the authors of the application you wish to extend to see if there are other supported ways. overview of the weblock module source as we mentioned in the previous section, components have layers. there are three main parts to every xpcom component. from the innermost and moving outward, the first object is the xpcom object. this is the object that contains the business logic, that implements functionality such as starting a network download, implementing interfaces that lis...
...o create an xpcom component. basic structure of the weblock component source weblock1.cpp that defines these classes and the code you need to create a basic component has the following structure: * required includes and constants * weblock: public iweblock * weblockfactory: public nsifactory * weblockmodule: public nsimodule in xpcom, all of these classes also derive from the nsisupports base interface. digging in: required includes and constants let's take a look at the first several lines of code in the component and discuss what they mean in xpcom. the includes and definitions at the top of an xpcom source file can give you an idea about some of the data types and techniques we'll be discussing more in the upcoming chapters. for example, mozilla_strict_api is a variab...
...definitions at the top of an xpcom source file can give you an idea about some of the data types and techniques we'll be discussing more in the upcoming chapters. for example, mozilla_strict_api is a variable that shields you from certain private, non-xpcom headers. for example, including nsicomponentmanager.idl without mozilla_strict_api defined will include the following headers, which are not supported across versions (unfrozen): nscomponentmanagerutils.h nscomponentmanagerobsolete.h these variables are picked up by files that do not specify themselves as mozilla_strict_api. includes and constants in weblock1.cpp #include <stdio.h> // may be defined at the project level // in the makefile #define mozilla_strict_api #include "nsimodule.h" #include "nsifactory.h" #include "nsicom...
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customDBHeaders Preference
as going through the creating a custom column guide, i built and used thunderbird-2.0b1 checked-out from cvs with the thunderbird_2_0b1_release tag. there is a high probability that your experience will be different should you use an earlier release. getting started to build upon the reply-to column tutorial, i'll describe the process i went through in developing a custom column to display a 'superfluous' column within thunderbird's main view. the data will come from a custom header labeled x-superfluous. setting the preferences although there are various ways to set preferences, i tend to just navigate to the directory where my profile is stored and edit the user.js file with my favorite text editor. in addition to the preference outlined in setting up extension development environment...
... various ways to set preferences, i tend to just navigate to the directory where my profile is stored and edit the user.js file with my favorite text editor. in addition to the preference outlined in setting up extension development environment, you'll want to add the following preferences: // this allows you to add extra headers while composing messages user_pref("mail.compose.other.header", "x-superfluous,x-other,x-whatever"); // this enables the preservation of custom headers as incoming mail is processed user_pref( "mailnews.customdbheaders", "x-superfluous,x-other"); important: please pay careful attention to the case of the mailnews.customdbheaders preference. because comparisons are case-insensitive, all of the custom headers get set to lowercase when the data gets migrated to the m...
...e. because comparisons are case-insensitive, all of the custom headers get set to lowercase when the data gets migrated to the message database. also, it has been brought to my attention that the delimiter has been changed to a space in the latest code. ...
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MediaMetadata - Web APIs
ility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...b.com/mdn/browser-compat-data and send us a pull request. ...
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PasswordCredential - Web APIs
note: this interface is restricted to top-level contexts and cannot be used from an <iframe>. constructor passwordcredential()secure context creates a new passwordcredential object. properties inherits properties from its ancestor, credential. passwordcredential.additionaldata secure context one of a formdata instance, a urlsearchparams instance, or null. ...
... table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ike to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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The "codecs" parameter in common media types - Web media technologies
for instance, just describing a video in an mpeg-4 file with the mime type video/mp4 doesn't say anything about what format the actual media within takes. for that reason, the codecs parameter can be added to the mime type describing media content. with it, container-specific information can be provided. ...
... file using the mpeg file type, such as an mp3. video/ogg a video file using the ogg file type. video/mp4 a video file using the mpeg-4 file type. video/quicktime a video file in apple's quicktime format. as noted elsewhere, this format was once commonly used on the web but no longer is, since it required a plugin to use. however, each of these mime types is vague. all of these file types support a variety of codecs, and those codecs may have any number of profiles, levels, and other configuration factors. for this reason, you can add the codecs parameter to the media type. to do so, append a semicolon (;) followed by codecs= and then the string describing the format of the contents of the file. some media types only let you specify the names of the codecs to use, while others allow ...
...ns. you can use the javascript encodeuri() function to encode the parameter list; similarly, you can use decodeuri() to decode a previously encoded parameter list. when the codecs parameter is used, the specified list of codecs must include every codec used for the contents of the file. the list may also contain codecs not present in the file.= codec options by container the containers below support extended codec options in their codecs parameters: 3gp av1 iso bmff mpeg-4 quicktime webm several of the links above go to the same section; that's because those media types are all based on iso base media file format (iso bmff), so they share the same syntax. av1 the syntax of the codecs parameter for av1 is defined the av1 codec iso media file format binding specification, sec...
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Mozilla Application Framework in Detail - Archive of obsolete content
b technologies to design and implement anything from a simple text editor to a comprehensive ide - complete with all of the interface widgets that you would find in virtually any major application framework. another benefit of this standards-based approach to ui development is that your application is cross-platform "out of the box". imagine not having to re-write your application 3 times, or not supporting a less popular platform simply because you do not have the resources for parallel development! unlike many other application frameworks, you are not limited to the widget set we provide, nor limited to the "look and feel" of the native os. you can create applications using our framework that either have a native look and feel for each os, or one which is identical on macs, pc's or u...
...s, rss, soap, or other xml-based languages and convert them into a form that you might display in your user interface. the gecko rendering engine gecko is the revolutionary rendering engine that offers advanced features for internet browsing anywhere across applications, computing platforms and devices. this innovation in browser technology offers small size, speed and industry leading standards support. gecko is the premier cross-platform, full-featured, mature and well-tested layout engine available, providing robust and high quality support for a massive array of standards. its ability to render web content correctly is exceptional. gecko consists roughly of an html parser and xml parser, a dom implementation, a css parser and style system, and the code for css-based and html-based layout...
...een designed from the ground up to power a new generation of desktop browsers and browsing devices and to accelerate the growth and development of the next-generation internet. small, fast and standards compliant, gecko is easily embeddable across platforms in browsers, desktop applications and browsing devices and delivers full-functionality browsing to them all. ...
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Index - MDN Web Docs Glossary: Definitions of Web-related terms
n used for internet infrastructure purposes, especially reverse dns lookup (i.e., find the domain name for a given ip address). 8 ascii glossary, infrastructure ascii (american standard code for information interchange) is one of the most popular coding method used by computers for converting letters, numbers, punctuation and control codes into digital form. since 2007, utf-8 superseded it on the web. 9 atag atag, accessibility, authoring tool accessibility guidelines, glossary atag (authoring tool accessibility guidelines) is a w3c recommendation for building accessible-authoring tools that produce accessible contents. 10 abstraction abstraction, coding, codingscripting, glossary, programming language abstraction in computer prog...
...y, reference the accessibility tree, or accessibility object model (aom), contains accessibility-related information for most html elements. 13 adobe flash adobe, codingscripting, flash, glossary, infrastructure flash is an obsolescent technology developed by adobe for viewing expressive web applications, multimedia content, and streaming media. adobe flash can run from supporting web browsers via a browser plug-in. 14 ajax ajax, codingscripting, glossary, infrastructure, l10n:priority ajax, which initially stood for asynchronous javascript and xml, is a programming practice of building complex, dynamic webpages using a technology known as xmlhttprequest. 15 algorithm codingscripting, glossary an algorithm is a self-containe...
...kernel (based on the android open source project (aosp)) and userspace hardware abstraction layer (hal). 177 google chrome browser, chrome canary, chrome stable, chromium, glossary, webmechanics, google chrome google chrome is a free web browser developed by google. it's based on the chromium open source project. some key differences are described on the chromium wiki. chrome supports its own layout called blink. note that the ios version of chrome uses that platform's webview, not blink. 178 graceful degradation design, glossary, graceful degradation graceful degradation is a design philosophy that centers around trying to build a modern web site/application that will work in the newest browsers, but falls back to an experience that while not as good...
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Gecko events
« at apis support page this page offers a list of accessibility-related events supported by gecko. event constants are defined in nsiaccessibleevent interface. event_dom_create an object has been created. is supported: yes event_dom_destroy an object has been destroyed. is supported: yes event_dom_significant_change an object's properties or content have changed significantly so that the type of object has really changed, and therefore the accessible should be destroyed or recreated. ...
...event constants are defined in nsiaccessibleevent interface. event_dom_create an object has been created. is supported: yes event_dom_destroy an object has been destroyed. is supported: yes event_dom_significant_change an object's properties or content have changed significantly so that the type of object has really changed, and therefore the accessible should be destroyed or recreated. ...
...ted: yes event_dom_destroy an object has been destroyed. is supported: yes event_dom_significant_change an object's properties or content have changed significantly so that the type of object has really changed, and therefore the accessible should be destroyed or recreated. ...
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Using XPCOM Utilities to Make Things Easier
ucture contain the following information: a human readable class name the class id (cid) the contract id (an optional but recommended argument) a constructor for the given object static const nsmodulecomponentinfo components[] = { { "pretty class name", cid, contract_id, constructor }, // ... }; the important thing to note in the fictitious listing above is that it can support multiple components in a module. modules such as the networking libraries in gecko ("necko") have over 50 components declared in a single nsmodulecomponentinfo array like this. the first entry of the nsmodulecomponentinfo above is the name of the component. though it isn't used that much internally at the present time, this name should be something that meaningfully describes the module. th...
...smodulecomponentinfo structure. #include "nsigenericfactory.h" static const nsmodulecomponentinfo components[] = { { "pretty class name", sample_cid, "@company.com/sample", sampleconstructor } } ns_impl_nsgetmodule(nssamplemodule, components) most of the components in the mozilla browser client use this approach. ...
...most of the components in the mozilla browser client use this approach. common implementation macros every xpcom object implements nsisupports, but writing this implementation over and over is tedious. unless you have very special requirements for managing reference counting or handling interface discovery, theimplementation macros that xpcom provides can be used. instead of implementing the nsisupports yourself, ns_impl_isupports1 can expand to the implementation of addref, release, and queryinterface for any object. ...
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WebIDL bindings
at interface's binding go in that namespace. there are various helper objects and utility methods in dom/bindings that are also all in the mozilla::dom namespace and whose headers are all exported into mozilla/dom (placed in $objdir/dist/include by the build process). ...
...ace that's supposed to implement that interface, you need to do the following: if your interface doesn't inherit from any other interfaces, inherit from nswrappercache and hook up the class to the cycle collector so it will trace the wrapper cache properly. note that you may not need to do this if your objects can only be created, never gotten from other objects. if you also inherit from nsisupports, make sure the nsisupports comes before the nswrappercache in your list of parent classes. if your interface does inherit from another interface, just inherit from the c++ type that the other interface corresponds to. if you do need to hook up cycle collection, it will look like this in the common case of also inheriting from nsisupports: // add strong pointers your class holds here. i...
... also inheriting from nsisupports: // add strong pointers your class holds here. if you do, change to using // ns_impl_cycle_collection_wrappercache. ns_impl_cycle_collection_wrappercache_0(myclass) ns_impl_cycle_collecting_addref(myclass) ns_impl_cycle_collecting_release(myclass) ns_interface_map_begin_cycle_collection(myclass) ns_wrappercache_interface_map_entry ns_interface_map_entry(nsisupports) ns_interface_map_end if your class doesn't inherit from a class that implements getparentobject, then add a function of that name that, for a given instance of your class, returns the same object every time (unless you write explicit code that handles your parent object changing by reparenting js wrappers, as nodes do). the idea is that walking the getparentobject chain will eventually g...
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AudioBuffer() - Web APIs
buffer(options); parameters inherits parameters from the audionodeoptions dictionary. options options are as follows: length: the size of the audio buffer in sample-frames. to determine the length to use for a specific number of seconds of audio, use numseconds * samplerate. numberofchannels: the number of channels for the buffer. the default is 1, and all user agents are required to support at least 32 channels. samplerate: the sample rate in hz for the buffer. the default is the sample rate of the context used in constructing this object. user agents are required to support sample rates from 8,000 hz to 96,000 hz (but are allowed to go farther outside this range). deprecated parameters context a reference to an audiocontext. this parameter was removed from the spe...
... rangeerror there isn't enough memory available to allocate the buffer. ...
... rangeerror there isn't enough memory available to allocate the buffer. ...
...And 18 more matches

background-size - CSS: Cascading Style Sheets
he compatibility table in this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...heck out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 18 more matches

Audio and Video Delivery - Developer guides
ve streams. this article is intended as a starting point for exploring the various delivery mechanisms of web based media and compatibility with popular browsers. the audio and video elements whether we are dealing with pre-recorded audio files or live streams, the mechanism for making them available through the browser's <audio> and <video> elements remains pretty much the same. ...
... identify how you want to play/instantiate the media (e.g. ...
...although with the adoption of mp3 and mp4 formats in firefox and opera, this is changing fast. you can find compatibility information in the guide to media types and formats on the web. to deliver video and audio, the general workflow is usually something like this: check what format the browser supports via feature detection (usually a choice of two, as stated above). if the browser doesn't support playback of any of the provided formats natively, either present a still image or use a fallback technology to present the video. identify how you want to play/instantiate the media (e.g. a <video> element, or document.createelement('video') perhaps?) deliver the media file to the player. html audio <audio controls preload="auto"> <source src="audiofile.mp3" type="audio/mpeg"> <!-- ...
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Transforming XML with XSLT - XSLT: Extensible Stylesheet Language Transformations
ch presentation versions of xml content. built from the ground up utilizing a wide variety of xml technologies, firefox incorporates within itself all of the mechanisms needed to process both original xml documents and the specialized stylesheets used to style and lay them out for html display, reducing server load with client-side processing. at present, gecko (the layout engine behind firefox) supports two forms of xml stylesheets. for basic control of appearance — fonts, colors, position, and so forth — gecko uses css. css1 and css2 are well supported and support for the emerging css3 standard is under development. for further information about css, see eric meyer's css pages. our focus here is on the second type of stylesheet that gecko supports: the xslt stylesheet. xslt stands for...
...lesheet author to transform a primary xml document in two significant ways: manipulating and sorting the content, including a wholesale reordering of it if so desired, and transforming the content into a different format (and in the case of firefox, the focus is on converting it on the fly into html which can then be displayed by the browser). ...
...mary xml document in two significant ways: manipulating and sorting the content, including a wholesale reordering of it if so desired, and transforming the content into a different format (and in the case of firefox, the focus is on converting it on the fly into html which can then be displayed by the browser). ...
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Developing for Firefox Mobile - Archive of obsolete content
mplements its ui using native android widgets instead of xul. with the add-on sdk you can develop add-ons that run on this new version of firefox mobile as well as on the desktop version of firefox. you can use the same code to target both desktop firefox and firefox mobile, and use jpm-mobile instead of the normal jpm. right now not all modules are fully functional, but we're working on adding support for more modules. the tables at the end of this guide list the modules that are currently supported on firefox mobile. this tutorial explains how to run sdk add-ons on an android device connected via usb to your development machine. we'll use the android debug bridge (adb) to communicate between the add-on sdk and the device. it's possible to use the android emulator to develop add-ons fo...
...e android sdk. make sure the "platform-tools" directory is in your path. then type: adb devices you should see some output like: list of devices attached 51800f220f01564 device (the long hex string will be different.) if you do, then adb has found your device and you can get started. running add-ons on android you can develop your add-on as normal, as long as you restrict yourself to the supported modules. when you need to run the add-on, first ensure that firefox is not running on the device. then execute jpm-mobile run with some extra options: jpm-mobile run --adb /path/to/adb in the command shell, you should see something like: launching mobile application with intent name org.mozilla.fennec pushing the addon to your device starting: intent { act=android.activity.main cmp=org...
...st way is probably to copy the signed xpi somewhere on the device: adb push my-addon.xpi /mnt/sdcard/ then open firefox mobile and type this into the address bar: file:///mnt/sdcard/my-addon.xpi the browser should open the xpi and ask if you want to install it. ...
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Windows Media in Netscape - Archive of obsolete content
windows media player™ as an activex control, and thus developers can now build multimedia experiences that script the windows media player in netscape 7.1, just as they do in internet explorer. netscape 7.1 will work with both the windows media player 6.4 activex control as well as versions 7 through 9. this article explains how to embed the windows media player activex control in web pages to support netscape 7.1, how to control the windows media player activex control using javascript and provides working examples. this article deals uniquely with netscape 7.1 running on the windows operating system. detecting the right browser like internet explorer, netscape 7.1 and later versions can play windows media files using the popular windows media player activex control. this control is widel...
...ol the windows media player activex control using javascript and provides working examples. this article deals uniquely with netscape 7.1 running on the windows operating system. detecting the right browser like internet explorer, netscape 7.1 and later versions can play windows media files using the popular windows media player activex control. ...
...internet explorer, netscape 7.1 and later versions can play windows media files using the popular windows media player activex control. this control is widely used to provide inline media support for web pages that provide sound, video and other media. controls such as windows media player also interact closely with the scripts in a web page. netscape 7.1 is the first netscape gecko™ browser to support the windows media player as an activex control -- previous netscape browsers did not support any activex controls, and thus detecting which versions of netscape support the windows media activex control is an important first step towards building multimedia experiences using html, javascript, and the windows media activex control. the windows media 9 series sdk documentation for netscape brow...
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What is CSS? - Learn web development
e for the background-color and border-color properties to be defined in this module. and you'd be right. css specifications all web standards technologies (html, css, javascript, etc.) are defined in giant documents called specifications (or simply "specs"), which are published by standards organizations (such as the w3c, whatwg, ecma, or khronos) and define precisely how those technologies are supposed to behave. css is no different — it is developed by a group within the w3c called the css working group. this group is made of representatives of browser vendors and other companies who have an interest in css. there are also other people, known as invited experts, who act as independent voices; they are not linked to a member organization. new css features are developed, or specified, b...
...w features coming available. however, a key thing about css is that everyone works very hard to never change things in a way that would break old websites. ...
...hat you will find the css specs overwhelming — they are intended for engineers to use to implement support for the features in user agents, not for web developers to read to understand css. many experienced developers would much rather refer to mdn documentation or other tutorials. it is however worth knowing that they exist, understanding the relationship between the css you are using, browser support (see below), and the specs. browser support once css has been specified then it is only useful for us in developing web pages if one or more browsers have implemented it. this means that the code has been written to turn the instruction in our css file into something that can be output to the screen. we'll look at this process more in the lesson how css works. it is unusual for all browsers...
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Video and audio content - Learn web development
ity with html fundamentals (as covered in getting started with html) and images in html. objective: to learn how to embed video and audio content into a webpage, and add captions/subtitles to video. video and audio on the web web developers have wanted to use video and audio on the web for a long time, ever since the early 2000s when we started to have bandwidth fast enough to support any kind of video (video files are much larger than text or even images.) in the early days, native web technologies such as html didn't have the ability to embed video and audio on the web, so proprietary (or plugin-based) technologies like flash (and later, silverlight) became popular for handling such content. this kind of technology worked ok, but it had a number of problems, including no...
...de for embedding video/audio in your webpages; if you use that route, you can avoid some of the difficulties we discuss in this article. we'll be discussing this kind of service a bit more in the next article. the <video> element the <video> element allows you to embed a video very easily. a really simple example looks like this: <video src="rabbit320.webm" controls> <p>your browser doesn't support html5 video. here is a <a href="rabbit320.webm">link to the video</a> instead.</p> </video> the features of note are: src in the same way as for the <img> element, the src (source) attribute contains a path to the video you want to embed. it works in exactly the same way. controls users must be able to control video and audio playback (it's especially critical for people who have epile...
...y.) you must either use the controls attribute to include the browser's own control interface, or build your interface using the appropriate javascript api. at a minimum, the interface must include a way to start and stop the media, and to adjust the volume. the paragraph inside the <video> tags this is called fallback content — this will be displayed if the browser accessing the page doesn't support the <video> element, allowing us to provide a fallback for older browsers. this can be anything you like; in this case, we've provided a direct link to the video file, so the user can at least access it some way regardless of what browser they are using. the embedded video will look something like this: you can try the example live here (see also the source code.) using multiple source ...
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Accessible Toolkit Checklist
kits wrap the widgets implemented by the os with a consistent api for each platform. since the individual widgets predominately come from the operating system, they already implement standard keyboard commands and follow the operating system's visual theme. also, assistive technologies already understand native widgets so it is only necessary to implement microsoft active accessibility (msaa) api support for custom controls. however, be aware that the wrapping layer will introduce accessibility bugs, and thus you will need to test extensively and fill in the holes. you will also need to provide a way for custom and owner drawn controls to easily accessibility api support, as wxwidgets does. there will be custom and owner drawn controls -- there always are. for example, lists of checkboxes are...
...d owner drawn controls -- there always are. for example, lists of checkboxes are implemented in windows with images of checked and unchecked checkboxes. owner drawn toolkits , like xul and flash's flex ui framework use few or no native widgets. these toolkits need to have accessibility implemented from the ground up, and get nothing for free in terms of keyboard, api or os-theme support. in this case, adding a complete or even a partial accessibility solution is major work, and will require more than one full time person as well as cooperation from windows assistive technology vendors when parts of your msaa solution isn't working. often these kinds of toolkits don't use a separate window for each control; in that case remember to generate a unique 32 bit child id for each c...
... the right of the current focus. on mac os x, ctrl+space is used to bring up the context menu. most widgets (like checkboxes) can have a label outside of themselves, which should focus the widget when clicked on, or when its mnemonic is pressed. the system should require these labels to be created/associated with each widget, not as a separate static text with no tie to the widget. the msaa support needs to know what label goes with what widget. msaa support: expose window with role_dialog, unless it's already the standard dialog window class #32770. if you don't, some screen readers won't automatically read the dialog when it receives focus. expose status bars with role_statusbar, unless they already use the standard window class msctls_statusbar32. make sure that parent-child re...
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JSS Provider Notes
been moved to http://www.dogtagpki.org/wiki/jss_provider. the mozilla-jss jca provider newsgroup: mozilla.dev.tech.crypto overview this document describes the jca provider shipped with jss. the provider's name is "mozilla-jss". it implements cryptographic operations in native code using the nss libraries. contents signed jar file installing the provider specifying the cryptotoken supported classes what's not supported signed jar file jss 3.2 implements several jce (java cryptography extension) algorithms. these algorithms have at various times been export-controlled by the us government. sun therefore requires that jar files implementing jce algorithms be digitally signed by an approved organization. netscape has this approval and signs the official builds of jss32.j...
... rsa keypair. this will happen on tokena because tokena // was the per-thread default token when rsakpg was created. rsakpg.initialize(1024); keypair rsapair = rsakpg.generatekeypair(); // generate a dsa keypair. this will happen on tokenb because tokenb // was the per-thread default token when dsakpg was created. ...
...l happen on tokenb because tokenb // was the per-thread default token when dsakpg was created. dsakpg.initialize(1024); keypair dsapair = dsakpg.generatekeypair(); supported classes cipher dsaprivatekey dsapublickey keyfactory keygenerator keypairgenerator mac messagedigest rsaprivatekey rsapublickey secretkeyfactory secretkey securerandom signature what's not supported the following classes don't work very well: keystore: there are many serious problems mapping the jca keystore interface onto nss's model of pkcs #11 modules. the current implementation is almost useless. since these problems lie deep in the nss design and implementation, there is no clear timeframe for fixing them. meanwhile, the org.mozilla.jss.crypto.cryptostore class ...
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IDBCursorWithValue - Web APIs
compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
... data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...eck out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 17 more matches

animation-delay - CSS: Cascading Style Sheets
he compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...red data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ck out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 17 more matches

break-inside - CSS: Cascading Style Sheets
definition. browser compatibility the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ke to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 17 more matches

font-size-adjust - CSS: Cascading Style Sheets
ially at small sizes, is determined more by the size of lowercase letters than by the size of capital letters. legibility can become an issue when the first-choice font-family is unavailable and its replacement has a significantly different aspect ratio (the ratio of the size of lowercase letters to the size of the font). to use this property in a way that is compatible with browsers that do not support font-size-adjust, it is specified as a number that the font-size property is multiplied by. this means the value specified for the property should generally be the aspect ratio of the first choice font. for example, a style sheet that specifies: font-size: 14px; font-size-adjust: 0.5; ... is really specifying that the lowercase letters of the font should be 7px high (0.5 × 14px). this wi...
...font-size property is multiplied by. this means the value specified for the property should generally be the aspect ratio of the first choice font. for example, a style sheet that specifies: font-size: 14px; font-size-adjust: 0.5; ... is really specifying that the lowercase letters of the font should be 7px high (0.5 × 14px). this will still produce reasonable results in browsers that do not support font-size-adjust, where a 14px font will be used. syntax values none choose the size of the font based only on the font-size property. <number> choose the size of the font so that its lowercase letters (as determined by the x-height of the font) are the specified number times the font-size. the number specified should generally be the aspect ratio (ratio of x-height to font size)...
...<number> choose the size of the font so that its lowercase letters (as determined by the x-height of the font) are the specified number times the font-size. the number specified should generally be the aspect ratio (ratio of x-height to font size) of the first choice font-family. this means that the first-choice font, when available, will appear the same size in browsers, whether or not they support font-size-adjust. 0 yields text of zero height (hidden text). formal definition initial valuenoneapplies toall elements. it also applies to ::first-letter and ::first-line.inheritedyescomputed valueas specifiedanimation typea number formal syntax none | <number> examples adjusting lower-case letter sizes html <p class="times">this text uses the times font (10px), which is hard to ...
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Index
match this document, and that's ok. whenever practical, new code and changes should move code closer to the ideal future. and of course, the idea of the future is always evolving in time as things change and we learn more. 6 gc rooting guide spidermonkey no summary! 7 gcintegration developing mozilla, firefox, garbage collection, intermediate, intro, jsapi, needsupdate, spidermonkey, tools, memory the spidermonkey garbage collector (gc) will be changing a lot in the future. this page is intended to explain the changes that are happening, with a focus on how they will affect gecko code that uses jsapi. at a high level, there are three issues to be aware of: 8 getting spidermonkey source code guide, spidermonkey you can get the spid...
..., spidermonkey js::callargs is helper class encapsulating access to the callee, this value, arguments, and argument count for a function call. 30 js::clonefunctionobject jsapi reference, reference, référence(2), spidermonkey js::clonefunctionobject creates a new function object from funobj. the new object has the same code and argument list as funobj. if scopechain is supplied, it uses scopechain as its enclosing scope. if scopechain is omitted, it creates a new function object in cx's global. this can be helpful if funobj is an extant function that you wish to use as if it were enclosed by a newly-created global object. 31 js::compile jsapi reference, reference, référence(2), spidermonkey js::compile compiles a script, srcbuf, chars, bytes,...
...e object it wraps. in these cases the engine calls the jsextendedclass.wrappedobject callback to get the wrapped object. most classes do not implement wrappedobject. 104 jsfun_bound_method jsapi reference, obsolete, spidermonkey this macro exists only for backward compatibility with existing applications. its use is deprecated. future versions of the javascript engine may not support or recognize this macro. 105 jsfun_global_parent jsapi reference, obsolete, spidermonkey no summary! 106 jsfastnative jsapi reference, obsolete, spidermonkey the callback should use the following macros to access the fields of vp: 107 jsfinalizeop jsapi reference, reference, référence(2), spidermonkey the jsfinalizeop is analogo...
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nsIXPConnect
js/src/xpconnect/idl/nsixpconnect.idlnot scriptable provides the xpconnect service. ...
...amelocation(in pruint32 alanguage, in string afilename, in string afunctionname, in print32 alinenumber, in nsistackframe acaller); void debugdump(in short depth); void debugdumpevalinjsstackframe(in pruint32 aframenumber, in string asourcetext); void debugdumpjsstack(in prbool showargs, in prbool showlocals, in prbool showthisprops); void debugdumpobject(in nsisupports acomobj, in short depth); [noscript,notxpcom] prbool definedomquickstubs(in jscontextptr cx, in jsobjectptr proto, in pruint32 flags, in pruint32 interfacecount, [array, size_is(interfacecount)] in nsiidptr interfacearray); jsval evalinsandboxobject(in astring source, in jscontextptr cx, in nsixpconnectjsobjectholder sandbox, in prbool returnstringonly); native code only! ...
...objectptr aparent, in jsobjectptr awrappedobj); native code only! ...
...And 16 more matches

FileList - Web APIs
an object of this type is returned by the files property of the html <input> element; this lets you access the list of files selected with the <input type="file"> element. it's also used for a list of files dropped into web content when using the drag and drop api; see the datatransfer object for details on this usage. note: prior to gecko 1.9.2, the input element only supported a single file being selected at a time, meaning that the filelist would contain only one file. starting with gecko 1.9.2, if the input element's multiple attribute is true, the filelist may contain multiple files. using the file list all <input> element nodes have a files attribute of type filelist on them which allows access to the items in this list. for example, if the html includes the following file input: ...
...lity the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...uctured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 16 more matches

FileSystemFlags.create - Web APIs
ompatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...this option has no effect.ie no su...
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FileSystemFlags.exclusive - Web APIs
atibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...'d like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...this option has no effect.ie no su...
...And 16 more matches

CSS Scrollbars - CSS: Cascading Style Sheets
y table in this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...d like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. scrollbar-width desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetscrollbar-widthchrome no support noedge no support nofirefox full support 64 full support 64 full support 63disabled disabled from version 63: this feature is behind the layout.css.scrollbar-width.enabled preference (needs to be set to true). to change preferences in firefox, visit...
...firefox full support 64 full support 64 full support 63disabled disabled from version 63: this feature is behind the layout.css.scrollbar-width.enabled preference (needs to be set to true). ...
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<input type="time"> - HTML: Hypertext Markup Language
the source for this interactive example is stored in a github repository. ...
... the source for this interactive example is stored in a github repository. ...
...utton is provided to clear the control's value. 12-hour 24-hour edge the edge time control is somewhat more elaborate, opening up an hour and minute picker with sliding reels. it, like chrome, uses a 12- or 24-hour format for inputting times, based on system locale: 12-hour 24-hour value a domstring representing a time, or empty. events change and input supported common attributes autocomplete, list, readonly, and step idl attributes value, valueasdate, valueasnumber, and list. methods select(), stepdown(), and stepup(). value a domstring containing the value of the time entered into the input. you can set a default value for the input by including a valid time in the value attribute when creating the <input> elem...
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The Netscape XSLT/XPath Reference - XSLT: Extensible Stylesheet Language Transformations
the following is an alphabetized and annotated list of the elements, axes, and functions from the w3c's 1.0 recommendation for xslt, as well as from the appropriate sections of the xpath recommendation. development of the xslt processor is ongoing, and this document will be updated as functionality is expanded. ...
... the following is an alphabetized and annotated list of the elements, axes, and functions from the w3c's 1.0 recommendation for xslt, as well as from the appropriate sections of the xpath recommendation. development of the xslt processor is ongoing, and this document will be updated as functionality is expanded. ...
...llowing is an alphabetized and annotated list of the elements, axes, and functions from the w3c's 1.0 recommendation for xslt, as well as from the appropriate sections of the xpath recommendation. development of the xslt processor is ongoing, and this document will be updated as functionality is expanded. ...
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Gecko Compatibility Handbook - Archive of obsolete content
ntent has been developed for microsoft internet explorer 4 or netscape navigator 4. these browsers were developed before the relevant w3c recommendations for html, css, and the dom existed. these earlier, non-standards based browsers differed in several ways from gecko: these browsers use proprietary (non-standard) html, css, and javascript. ...
...these browsers were developed before the relevant w3c recommendations for html, css, and the dom existed. these earlier, non-standards based browsers differed in several ways from gecko: these browsers use proprietary (non-standard) html, css, and javascript. internet explorer 4 and netscape navigator 4 share support for a large part of the html 3.2 standard and basic javascript. while they support the css 1 standard to some degree, the implementations are not complete and have non-standard features added. neither internet explorer 4 or netscape navigator 4 support the w3 dom. instead, each browser supports its own proprietary api for manipulating the content, style and position of html elements in a web page. in addition, internet explorer 4 and netscape navigator 4 use completely di...
...t explorer for mac and ie for windows, which are very different programs and so may behave quite differently from each other. quick compatibility test if your site uses netscape 4.x and microsoft proprietary technologies, see using web standards in your web pages for a quick tutorial on standards. this compatibility test will be most beneficial to sites using simple code or that have updated to support standards. set up browsers for testing the various gecko-based browsers do not always contain netscape in the user-agent string. thus it's critical to verify that you are properly detecting browsers such as aol for macos. you can either download the various browsers. or, if you are using user-agent detection, you can install an extension in firefox or mozilla which allows you to "spoof" th...
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Working with JSON - Learn web development
and a mime type of application/json. json structure as described above, a json is a string whose format very much resembles javascript object literal format. you can include the same basic data types inside json as you can in a standard javascript object — strings, numbers, arrays, booleans, and other object literals. ...
...is a string whose format very much resembles javascript object literal format. you can include the same basic data types inside json as you can in a standard javascript object — strings, numbers, arrays, booleans, and other object literals. ...
..."members": [ { "name": "molecule man", "age": 29, "secretidentity": "dan jukes", "powers": [ "radiation resistance", "turning tiny", "radiation blast" ] }, { "name": "madame uppercut", "age": 39, "secretidentity": "jane wilson", "powers": [ "million tonne punch", "damage resistance", "superhuman reflexes" ] }, { "name": "eternal flame", "age": 1000000, "secretidentity": "unknown", "powers": [ "immortality", "heat immunity", "inferno", "teleportation", "interdimensional travel" ] } ] } if we loaded this object into a javascript program, parsed in a variable called superheroes for example, we ...
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Mozilla-JSS JCA Provider notes
the mozilla-jss jca provider newsgroup: mozilla.dev.tech.crypto overview this document describes the jca provider shipped with jss. the provider's name is "mozilla-jss". it implements cryptographic operations in native code using the nss libraries. contents signed jar file installing the provider specifying the cryptotoken supported classes what's not supported signed jar file jss implements several jce (java cryptography extension) algorithms. these algorithms have at various times been export-controlled by the us government. jre therefore requires that jar files implementing jce algorithms be digitally signed by an approved organization. the maintainers of jss, sun, red hat, and mozilla, have this approval and signs the official builds of jss4.jar. at runtime, the jre autom...
.../ generate an rsa keypair. this will happen on tokena because tokena // was the per-thread default token when rsakpg was created. rsakpg.initialize(1024); keypair rsapair = rsakpg.generatekeypair(); // generate a dsa keypair. this will happen on tokenb because tokenb // was the per-thread default token when dsakpg was created. ...
... a dsa keypair. this will happen on tokenb because tokenb // was the per-thread default token when dsakpg was created. ...
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FileSystem - Web APIs
ty the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
... if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...it's not available for use in file or folder picker panels (such as when you use an <input> eleme...
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IDBRequest.error - Web APIs
bility the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...om structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ta, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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IDBTransaction.error - Web APIs
bility the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...om structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ta, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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Slottable - Web APIs
atibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...f you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetslottable experimentalchrome full support 53edge full support 79firefox full support 63 full support 63 no support 59 — 63disabled disabled from version 59 until version 63 (exclusive): this feature is behind the dom.webcomponents.shadowdom.enabled preference (needs to be set to true). to change preferences i...
... full support 63 full support 63 no support 59 — 63disabled disabled from version 59 until version 63 (exclusive): this feature is behind the dom.webcomponents.shadowdom.enabled preference (needs to be set to true). to change preferences in firefox, visit about:config. no support ? — 59disabled disabled until version 59 (exclusive): this feature is behind the dom.webcomponents.enabled preference (needs to be set to true) and the dom.webcomponents.shadowdom.enabled preference (needs to be set to true). to change preferences in firefox, visit about:config.ie no support noopera full support ...
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WebGL best practices - Web APIs
firefox), webgl stops generating descriptive messages, which really hinders debugging. the only errors a well-formed page generates are out_of_memory and context_lost. know your limits (and extensions) the availability of most webgl extensions depends on the client system. ...
...of most webgl extensions depends on the client system. when using webgl extensions, if possible, try to make them optional by gracefully adapting to the case there they are not supported. ...
... extensions, if possible, try to make them optional by gracefully adapting to the case there they are not supported. ...
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Functions and classes available to Web Workers - Web APIs
yes, on workerglobalscope yes, on workerglobalscope yes, on workerglobalscope yes, on workerglobalscope no close() yes, on workerglobalscope yes, on workerglobalscope yes, but is a no-op. ...
...yes, on workerglobalscope yes, on workerglobalscope yes, on workerglobalscope no close() yes, on workerglobalscope yes, on workerglobalscope yes, but is a no-op. ...
...balscope yes, on workerglobalscope yes, on workerglobalscope no close() yes, on workerglobalscope yes, on workerglobalscope yes, but is a no-op. ...
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Using feature queries - CSS: Cascading Style Sheets
feature queries are created using the css at-rule @supports, and are useful as they give web developers a way to test to see if a browser has support for a certain feature, and then provide css that will only run based on the result of that test. in this guide you will learn how to implement progressive enhancement using feature queries. syntax css feature queries are part of the css conditional rules module, which also contains the media query @media rule; when you use feature queries, you will find they behave in a similar way to media queries. ...
...ueries. syntax css feature queries are part of the css conditional rules module, which also contains the media query @media rule; when you use feature queries, you will find they behave in a similar way to media queries. ...
...ditional rules module, which also contains the media query @media rule; when you use feature queries, you will find they behave in a similar way to media queries. the difference is that with a media query you are testing something about the environment in which the web page is running, whereas with feature queries you are testing browser support for css features. a feature query consists of the @supports rule, followed by the property name and value you would like to test for. you may not test for a bare property name such as display; the rule requires a property name and a value: @supports (property: value) { css rules to apply } if you want to check if a browser supports the row-gap property, for example, you would write the following feature query. it doesn't matter which value you us...
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<shape> - CSS: Cascading Style Sheets
compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ta. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...//github.com/mdn/browser-compat-data and send us a pull request. ...
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<input>: The Input (Form Input) element - HTML: Hypertext Markup Language
button a push button with no default behavior displaying the value of the value attribute, empty by default. <input type="button" name="button" /> checkbox a check box allowing single values to be selected/deselected. <input type="checkbox" name="checkbox"/> color a control for specifying a color; opening a color picker when active in supporting browsers. <input type="color" name="color"/> html5 date a control for entering a date (year, month, and day, with no time). opens a date picker or numeric wheels for year, month, day when active in supporting browsers. <input type="date" name="date"/> html5 datetime-local a control for entering a date and time, with no time zone. open...
... date a control for entering a date (year, month, and day, with no time). opens a date picker or numeric wheels for year, month, day when active in supporting browsers. <input type="date" name="date"/> html5 datetime-local a control for entering a date and time, with no time zone. opens a date picker or numeric wheels for date- and time-components when active in supporting browsers. <input type="datetime-local" name="datetime-local"/> html5 email a field for editing an email address. looks like a text input, but has validation parameters and relevant keyboard in supporting browsers and devices with dynamic keyboards. <input type="email" name="email"/> html5 file a control that lets the user select a file...
...defined by the src attribute. the alt attribute displays if the image src is missing. <input type="image" name="image" src="" alt="image input"/> month a control for entering a month and year, with no time zone. <input type="month" name="month"/> html5 number a control for entering a number. displays a spinner and adds default validation when supported. displays a numeric keypad in some devices with dynamic keypads. <input type="number" name="number"/> html5 password a single-line text field whose value is obscured. will alert user if site is not secure. <input type="password" name="password"/> radio a radio button, allowing a single value to be selected out of multiple choices with...
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Mozilla Crypto FAQ - Archive of obsolete content
note that this document is for your information only and is not intended as legal advice. if you wish to develop and distribute cryptographic software, particularly for commercial sale or distribution, then you should consult an attorney with expertise in the particular laws and regulations that apply in your jurisdiction. ...
...mozilla code base. information in the faq also reflects the new u.s. encryption export regulations published on january 14, 2000, the release on february 11, 2000, of source code for ssl, s/mime, and general pki functionality for use in the mozilla project, and the "bernstein advisory" issued by the bureau of export administration on february 17, 2000. the questions in this faq address mozilla's support for encryption and related security functionality, information important to mozilla contributors relating to encryption functionality in mozilla, and general questions on u.s. regulation of encryption technology. cryptographic functionality in mozilla have all the issues with mozilla and crypto now been resolved? almost. now that the rsa patent is in the public domain, mozilla crypto devel...
... u.s. regulation of encryption technology. cryptographic functionality in mozilla have all the issues with mozilla and crypto now been resolved? almost. now that the rsa patent is in the public domain, mozilla crypto development can proceed with minimal restrictions. in the near future the mozilla code base will include a complete open source cryptographic library, and mozilla will include ssl support as a standard feature. after the u.s. government relaxed u.s. export regulations in january 2000 to allow export of source code for open source software implementing encryption, the major remaining legal obstacle to mozilla crypto development was the fact that rsa security, inc., held a u.s. patent on the rsa public key algorithm. in february 2000 iplanet e-commerce solutions (a sun-netscape...
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Mozilla’s UAAG evaluation report
1 candidate recommendation of uaag 1.0. this may be different from the most recent version, check for updates on the user agent working group home page. look to the "techniques" document for real-world implementation examples of each checkpoint. this uaag evaluation report covers nightly builds of the mozilla web browser itself, running on windows 2000, as of february 20, 2002. we are claiming to support html 4, css 2, png, jpg and gif. this evaluation does not cover mailnews or composer. there may be accessibility and customizability features not listed here. a very good resource is the customizing document. when filing mozilla bugs based on uaag requirements, please use bug 24413 as the uaag meta bug. checkpoint information (same scaled used on w3c's uaag implementation reports pages) ...
... scale c: complete implementation vg: very good implementation, almost all requirements satisfied g: good implementation, most important requirements satisfied p: poor implementation, some requirements satisfied and/or difficult for user to access feature ni: not implemented nr: not rated na: not applicable document under construction guideline 1. support input and output device-independence. checkpoint title status notes/plans 1.1 full keyboard access. (p1) vg we have some remaining bugs, and some keyboard usability issues, but in general mozilla now has keyboard equivalents for almost everything. most browsers do not allow the user to select text with the keyboard alone. we intend to do this with a caret ...
...ve some remaining bugs, and some keyboard usability issues, but in general mozilla now has keyboard equivalents for almost everything. most browsers do not allow the user to select text with the keyboard alone. we intend to do this with a caret browsing feature. 1.2 activate event handlers. (p1) p onmouseover, onmousedown, onmouseup, onmousemove, onclick, ondbclick: no keyboard support onfocus and onblur: cannot be activated with pointer 1.3 provide text messages. (p1) c status line and alert boxes used to convey messages and alerts guideline 2. ensure user access to all content. checkpoint title status notes/plans checkpoint title status notes/plans 2.1 render content according to specification. (p...
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IDBObjectStore.name - Web APIs
ibility the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...rom structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ata, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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PaymentRequest.canMakePayment() - Web APIs
you can call this before calling show() to provide a streamlined user experience when the user's browser can't handle any of the payment methods you accept. ...
...could fall back to another payment method, or offer a list of methods that aren't handled by payment request api (or even provide instructions for paying by mail or by phone). syntax paymentrequest.canmakepayment() .then( canpay => { ... }) .catch( error => { ... }) canpay = await paymentrequest.canmakepayment(); returns a promise to a boolean that resolves to true if the user agent supports any of the payment methods supplied when instantiating the request using the paymentrequest constructor. if the payment can't be processed, the promise receives a value of false. note: if you call this too often, the browser may reject the returned promise with a domexception. parameters none examples in the following example, is excerpted from a demo that asynchronously builds a paym...
...ously builds a paymentrequest object for both apple pay and credit cards. it wraps the call to canmakepayment() in feature detection, and calls an appropriate callback depending on the resolution of the promise. ...
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Using the Payment Request API - Web APIs
r preferred payment systems and platforms to merchants that they want to pay for goods and services. this article is a guide to making use of the payment request api, with examples and suggested best practices. the basics of making a payment this section details the basics of using the payment request api to make a payment. note: the code snippets from this section are from our feature detect support demo. creating a new payment request object a payment request always starts with the creation of a new paymentrequest object — using the paymentrequest() constructor. this takes two mandatory parameters and one option parameter: methoddata — an object containing information concerning the payment provider, such as what payment methods are supported, etc. details — an object conta...
...nt provider, such as what payment methods are supported, etc. details — an object containing information concerning the specific payment, such as the total payment amount, tax, shipping cost, etc. options (optional) — an object containing addtional options related to the payment. ...
... options (optional) — an object containing addtional options related to the payment. ...
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PushManager.hasPermission() - Web APIs
ility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...u'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...m/mdn/browser-compat-data and send us a pull request. desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internethaspermission experimentalchrome full support 42edge full support 16disabled full support 16disabled disabled from version 16: this feature is behind the enable service workers preference. ...
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:scope - CSS: Cascading Style Sheets
bility the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internet:scopechrome full support 27edge full support 79firefox full support 32notes full support 32notes notes firefox 55 removes support for <style scoped> but not for the :scope pseudo-class, which is still supported. <style scoped> made it possible to explicit...
... full support 32notes notes firefox 55 removes support for <style scoped> but not for the :scope pseudo-class, which is still supported. <style scoped> made it possible to explicitly set up element scopes, but ongoing discussions about the design of this feature as well as lack of other implementations resulted in the decision to remove it. no support 20 — 32disabled disabled from version 20 until version 32 (exclusive): this feature is behind the layout.css.scope-pseudo.enabled preference (needs to be set to true). ...
...ions about the design of this feature as well as lack of other implementations resulted in the decision to remove it. no support 20 — 32disabled disabled from version 20 until version 32 (exclusive): this feature is behind the layout.css.scope-pseudo.enabled preference (needs to be set to true). ...
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box-direction - CSS: Cascading Style Sheets
e on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ntribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...romeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetbox-direction deprecatednon-standardchrome full support 1prefixed full support 1prefixed prefixed implemented with the vendor prefix: -webkit-edge full support 12prefixed full support 12prefixed prefixed implemented with the vendor prefix: -webkit-firefox full support 1prefixed full support 1prefixed prefixed implemented with the vendor prefix: -moz- full support ...
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WebAssembly.Module - JavaScript
ompatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
.... if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...github.com/mdn/browser-compat-data and send us a pull request. ...
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SVG documentation index - SVG: Scalable Vector Graphics
3 compatibility sources svg the following sources are used for the compatibility tables on svg elements and attributes: 4 content type needstechnicalreview, svg, types, data types svg makes use of a number of data types. this article lists these types along with their syntax and d...
... a parent html document using the tag: 6 namespaces crash course svg, xml as an xml dialect, svg is namespaced. it is important to understand the concept of namespaces and how they are used if you plan to author svg content. versions of svg viewers prior to the release of firefox 1.5 unfortunately paid scant attention to namespaces, but they are essential to multi-xml dialect supporting user agents such as gecko-based browsers which must be very strict. take some time to understand namespaces now and it will save you all sorts of headaches in the future. 7 example svg, xml in this example, we use xhtml, svg, javascript, and the dom to animate a swarm of "motes". these motes are governed by two simple principles. first, each mote tries to move towards ...
...ote tries to move away from the average mote position. combined, we get this very natural-looking behavior. 8 other resources reference, svg here is a list of additional resources on svg: 9 project svg no summary! 10 replaced element svg this page was auto-generated because a user created a sub-page to this page. 11 svg 1.1 support in firefox firefox, svg you can find some basic examples of svg syntax and usage in the w3c svg test suite. 12 svg 2 support in mozilla firefox, svg svg 2 is the next major version of the svg standard, which is a complete rework of the svg 1.2 draft. 13 svg attribute reference drawing, landing, needshelp, overview, responsive design, svg, svg attr...
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Localization - Archive of obsolete content
see limitations below. localized strings translated strings are kept in a directory called "locale" under your main add-on directory, one file for each locale. ...
...see limitations below. localized strings translated strings are kept in a directory called "locale" under your main add-on directory, one file for each locale. ...
... you'd add two files to the "locale" directory: my-addon/ data lib locale/ en-us.properties fr.properties "en-us.properties" contains this: hello_id= hello! "fr.properties" contains this: hello_id= bonjour !
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XML in Mozilla - Archive of obsolete content
dtds and other external entities mozilla does not load external entities from the web. ...
...dtds and other external entities mozilla does not load external entities from the web. ...
...dtds and other external entities mozilla does not load external entities from the web. ...
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Gecko FAQ - Gecko Redirect 1
gecko is used in multiple browsers, including mozilla firefox, seamonkey, and others. gecko is continuously under development at mozilla.org. gecko has been known previously by the code names "raptor" and "nglayout"; the new name was chosen following a trademark infringement dispute. for more information see the wikipedia article on gecko. ...
...nts the browser's content area, which is the blank area inside the browser window's chrome. formally, a layout engine defines the placement policy for a document and places content on a page. gecko's core is a very fast layout engine. gecko also offers the ability to parse various document types (html, xml, svg, etc), advanced rendering capabilities including compositing and transformations, and support for embedded javascript and plugins. gecko is so fast and so powerful that it's being used to create the user interface of some applications ("chrome") as well. in other words, gecko will not only be displaying the document's content, but it will also be painting the scrollbars, toolbars, and menus on the screen as well. for more information see xul. how is a layout engine like gecko differ...
...wsers, as well as others, powering all of the individual components. gecko technologies will also power the display of the mozilla.com portal site, speedily delivering more exciting content and services. gecko's architecture will serve mozilla well into the future, enabling faster time to market, more innovation, less costly development, easier distribution and updating, and better cross platform support. how can other companies and organizations use gecko? because gecko is small, lightweight, and open source, other companies and organizations can easily reuse it. many hardware vendors are creating devices with network access and wish to include web browsing functionality. likewise, many software developers want to include web browsing capability in their applications, but don't want to ind...
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FileSystemDirectoryEntry - Web APIs
on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...e to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetfilesystemdirectoryentry experimentalchrome full support 8alternate name full support 8alternate name alternate name uses the non-standard name: directoryentryedge full support 79prefixed full support 79prefixed prefixed implemented with the vendor prefix: webkitfirefox full support 50ie no support noopera full support yesprefixed full support...
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PushRegistrationManager - Web APIs
methods pushregistrationmanager.register() returns a promise that resolves to a pushregistration with details of a new registration. pushregistrationmanager.unregister() returns a promise that resolves to a pushregistration with details of the unregistered registration. pushregistrationmanager.getregistration() returns a promise that resolves the pushregistration associated with the current webapp. ...
...s page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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Using the Resource Timing API - Web APIs
and responseend). this example also calculates the time from the start of the fetch and request start phases (fetchstart and requeststart, respectively), until the response has ended (responseend). this timing data provides a detailed profile of the resource loading phases and this data can be used to help identify performance bottlenecks. ...
...t phases (fetchstart and requeststart, respectively), until the response has ended (responseend). this timing data provides a detailed profile of the resource loading phases and this data can be used to help identify performance bottlenecks. ...
...y returns the size (in octets) received from the fetch (http or cache), of the payload body, before removing any applied content-codings. decodedbodysize returns the size (in octets) received from the fetch (http or cache) of the message body, after removing any applied content-codings. the following example demonstrates using these three properties. ...
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ScreenOrientation - Web APIs
compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ta. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...//github.com/mdn/browser-compat-data and send us a pull request. ...
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Screen Orientation API - Web APIs
compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ta. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...//github.com/mdn/browser-compat-data and send us a pull request. ...
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CSS Grid Layout and Progressive Enhancement - CSS: Cascading Style Sheets
in spring of 2017, we saw for the first time a major specification like grid being shipped into browsers almost simultaneously, and we now have css grid layout support in the public versions of firefox, chrome, opera, safari and edge. however, while evergreen browsers mean that many of us are going to see the majority of users having grid layout support very quickly, there are also old or non-supporting browsers to contend with. in this guide we will walk through a variety of strategies for support. the supporting browsers other than in internet explorer, css grid layout is unprefixed in safari, chrome, opera, firefox and edge. support for all the properties and values detailed in these guides is interoperable across browsers. this means that if you write some grid layout code in f...
...d-column-align the ie version has additional properties not required in the new specification of -ms-grid-column-span and -ms-grid-row-span. this version does not include auto-placement capability, or grid template areas. some simple grid layouts could be implemented for ie10, through to edge 15, using the -ms properties. as these properties are vendor prefixed, they will not effect any browser supporting the up to date and unprefixed specification. autoprefixer grid layout support the popular tool autoprefixer has been updated to support the -ms- grid version. by default, grid prefixes are disabled, but you can enable it with grid: true option. autoprefixer({ grid: 'autoplace' }) grid prefixes are disabled by default because some properties can’t be prefixed. is it safe to use css g...
...r nothing way. you could start by simply enhancing elements in your design with grid, that could otherwise display using an older method. overwriting of legacy methods with grid layout works surprisingly well, due to the way grid interacts with these other methods. floats we have typically used floats to create multiple column layouts. if you have floated an item, which is also a grid item in a supporting browser, the float will no longer apply to the item. the fact is that a grid item takes precedence. in the example below, i have a simple media object. in a non-supporting browser, i use float, however i have also defined the container as a grid container, in order to use the alignment properties that are implemented in css grids. the float no longer applies, and i can use the css box ali...
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HTTP Index - HTTP
urls guide, http, url a recurring question among website owners is whether to choose non-www or www urls. this page provides some advice on what's best. 6 data urls base64, guide, http, intermediate, url data urls, urls prefixed with the data: scheme, allow content creators to embed small files inline in documents. 7 evolution of http guide, http, needsupdate, needsupdate(http/3) http (hypertext transfer protocol) is the underlying protocol of the world wide web. http has evolved from an early protocol to exchange files in a semi-trusted laboratory environment, to the modern maze of the internet, now carrying images, videos in high resolution and 3d. 8 identifying resources on the web domain, http, path, scheme, syntax, uri, u...
...vely enhance itself based on the availability of features rather than by targeting specific browsers. 13 compression in http guide, http, compression compression is an important way to increase the performance of a web site. for some documents, size reduction of up to 70% lowers the bandwidth capacity needs. over the years, algorithms also got more efficient, and new ones are supported by clients and servers. 14 configuring servers for ogg media audio, http, media, ogg, video this guide covers a few server configuration changes that may be necessary for your web server to correctly serve ogg media files. 15 connection management in http/1.x connection management, guide, http, networking, performance, webmechanics connection manage...
...uests. 29 reason: cors request not http cors, corsrequestnothttp, cross-origin, error, http, https, messages, reasons, security, console, troubleshooting cors requests may only use the https url scheme, but the url specified by the request is of a different type. this often occurs if the url specifies a local file, using a file:/// url. ...
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WebAssembly.Memory - JavaScript
ompatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
.... if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...github.com/mdn/browser-compat-data and send us a pull request. ...
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platform/xpcom - Archive of obsolete content
ement and register xpcom services if all you need to do is use xpcom objects that someone else has implemented, then you don't need to use this module. you can just use require("chrome") to get direct access to the components object, and access xpcom objects from there. implementing xpcom interfaces this module exports a class called unknown which implements the fundamental xpcom interface nsisupports. by subclassing unknown, either using standard javascript inheritance or using the sdk's heritage module, you can provide your own implementations of xpcom interfaces. "unknown" is named after the "iunknown" interface in com. for example, the add-on below implements the nsiobserver interface to listen for and log all topic notifications: var { class } = require('sdk/core/heritage'); var {...
...if you don't specify a class id, then the factory will generate one. either way, it will be accessible as the value of the factory's id property. xpcom users can look up the factory using the class id ...
...however, the components.classes object commonly used to look up factories by contract id will not be updated at run time. to access the replacement factory you ...
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PKCS11 FAQ
ss's internal certificate database? if so, is there a way to get the certificate from an external token into nss's internal certificate database? nss searches all the installed pkcs #11 modules when looking for certificates. once you've installed the module, the module's certificates simply appear in the list of certificates displayed in the certificate window. what version of pkcs #11 does nss support? nss requires at least pkcs #11 version 2.0, but can support some features of later versions of nss, including nss 2.20. nss does not use all the features of later versions of pkcs #11. what are the expectations in terms of session manipulation? will nss potentially open more than one session at a time? read-only sessions, read/write sessions, serial, parallel? nss typically holds one sess...
...he pkcs #11 functions that make sense for your token. nss continues to evolve, and periodically enhances it's functionality by using a more complete list of pkcs #11 functions. you should have implementations for all the functions specified in the version of the pkcs #11 spec your token implements. if you do not actually do the operation specified by that function, you can return ckr_function_not_supported. will nss get the user's ca certificate via pkcs #11 and push it into the ca certificate database or is the ca certificate database expected to obtain the ca certificate by some other means? pkcs #11 certificates that have private keys associated with them are are loaded into the temporary database (in memory) and marked as user certificates. all other certificates in the module are loade...
...e these cases as we find them. what are "generic crypto svcs" (the first item listed when you click the view/edit button for the nss internal pkcs #11 module under security devices under options/security in firefox)? generic crypto svcs are the services that nss uses to do its basic cryptography (rsa encryption with public keys, hashing, aes, des, rc4, rc2, and so on).other pkcs #11 modules can supply implementations of these functions, and nss uses those versions under certain conditions. however, these are not the services nss calls to get to other pkcs #11 modules, which show up separately under cryptographic modules. our plugin provides several slots with different capabilities. for example, one does all the hashing/symmetric operations, while another does only asymmetric rsa operation...
...And 12 more matches

nsIDOMWindowUtils
dom/interfaces/base/nsidomwindowutils.idlscriptable this interface is a dom utility interface that provides useful dom methods and attributes. 1.0 66 introduced gecko 1.8 inherits from: nsisupports last changed in gecko 49.0 (firefox 49.0 / thunderbird 49.0 / seamonkey 2.46) implemented by: window. to get this interface, use: var domwindowutils = window.windowutils; method overview void activatenativemenuitemat(in astring indexstring); void clearmozafterpaintevents(); pruint32 comparecanvases(in nsidomhtmlcanvaselement acanvas1, in nsidomhtmlcanvaselement acanvas2, out unsigned long amaxdifference); double computeanimationdistance(in nsidomelement element, in astring property, in astring value1, in astring val...
... void removesheet(in nsiuri sheeturi, in unsigned long type); void resumetimeouts(); ...
...read only. exceptions thrown ns_error_not_available there is no current inner window ...
...And 12 more matches

nsITransferable
widget/nsitransferable.idlscriptable a container for typed data that can be transferred from one place or owner to another, possibly involving format conversion. these objects are used during drag-and-drop operations. inherits from: nsisupports last changed in gecko 13.0 (firefox 13.0 / thunderbird 13.0 / seamonkey 2.10) implemented by: @mozilla.org/widget/transferable;1. to create an instance, use: var transferable = components.classes["@mozilla.org/widget/transferable;1"] .createinstance(components.interfaces.nsitransferable); it's important to note that a flavor, which specifies a type of data the transferable supports, is represented by a null-terminated string indicating the mime type of the format supported by the flavor. method overview ...
...mozilla.org/widget/transferable;1"] .createinstance(components.interfaces.nsitransferable); it's important to note that a flavor, which specifies a type of data the transferable supports, is represented by a null-terminated string indicating the mime type of the format supported by the flavor. ...
...ateinstance(components.interfaces.nsitransferable); it's important to note that a flavor, which specifies a type of data the transferable supports, is represented by a null-terminated string indicating the mime type of the format supported by the flavor. ...
...And 12 more matches

nsIWebNavigationInfo
docshell/base/nsiwebnavigationinfo.idlscriptable exposes a way to get information on the capabilities of gecko web navigation objects. ...
... introduced gecko 1.8 inherits from: nsisupports last changed in gecko 1.8 (firefox 1.5 / thunderbird 1.5 / seamonkey 1.0) implemented by: @mozilla.org/webnavigation-info;1 as a service: var webnavigationinfo = components.classes["@mozilla.org/webnavigation-info;1"] .getservice(components.interfaces.nsiwebnavigationinfo); method overview unsigned long istypesupported(in acstring atype, in nsiwebnavigation awebnav); constants support type constants constant value description unsupported 0 returned by istypesupported() to indicate lack of support for a type. ...
...this is not the value returned for "xpcom plug-ins". ...
...And 12 more matches

BiquadFilterNode() - Web APIs
y table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ke to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...d us a pull request. ...
...And 12 more matches

FileSystemDirectoryReader - Web APIs
ge is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ta, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...reroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetfilesystemdirectoryreader deprecatednon-standardchrome full support 8alternate name full support 8alternate name alternate name uses the non-standard name: directoryreaderedge full support ≤18alternate name full support ≤18alternate name alternate name uses the non-standard name: webkitdirectoryreaderfirefox full support 50ie no support noopera full support yesprefixe...
...And 12 more matches

HTMLImageElement.x - Web APIs
mpatibility the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...rom structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
... check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 12 more matches

HTMLImageElement.y - Web APIs
mpatibility the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...rom structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
... check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 12 more matches

IDBFactory.cmp() - Web APIs
example var a = 1; var b = 2; var result = window.indexeddb.cmp(a, b); console.log( "comparison results: " + result ); specifications specification status comment indexed database api 2.0the definition of 'cmp()' in that specification. recommendation indexed database api draftthe definition of 'cmp()' in that spe...
...tibility the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 12 more matches

IDBIndex.name - Web APIs
ibility the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...rom structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ata, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 12 more matches

:host() - CSS: Cascading Style Sheets
ons specification status comment css scoping module level 1the definition of ':host()' in that specification. working draft initial definition. ...
... scoping module level 1the definition of ':host()' in that specification. working draft initial definition. browser compatibility desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internet:host()chrome full support 54edge full support 79firefox full support 63 full support 63 no support 61 — 63disabled disabled from version 61 until version 63 (exclusive): this feature is behind the dom.webcomponents.shadowdom.enabled preference (needs to be set to true). to change preferences i...
... full support 63 full support 63 no support 61 — 63disabled disabled from version 61 until version 63 (exclusive): this feature is behind the dom.webcomponents.shadowdom.enabled preference (needs to be set to true). ...
...And 12 more matches

image-set() - CSS: Cascading Style Sheets
y the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ata. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...quest. ...
...And 12 more matches

<input type="datetime-local"> - HTML: Hypertext Markup Language
h a date and a time, including the year, month, and day as well as the time in hours and minutes. the source for this interactive example is stored in a github repository. if you'd like to contribute to the interactive examples project, please clone https://github.com/mdn/interactive-examples and send us a pull request. the control's ui varies in general from browser to browser; at the moment support is patchy, with only chrome/opera and edge on desktop and most modern versions of mobile browsers having usable implementations. in other browsers, these degrade gracefully to simple <input type="text"> controls. the control is intended to simply represent a local date and time, not necessarily the user's local date and time. in other words, an implementation should allow any valid combinati...
...user's local date and time. in other words, an implementation should allow any valid combination of year, month, day, hour, and minute - even if such a combination is invalid in the user's local time zone (such as times within a daylight saving time spring-forward transition gap). some mobile browsers (particularly on ios) do not currently implement this correctly. because of the limited browser support for datetime-local, and the variations in how the inputs work, it may currently still be best to use a framework or library to present these, or to use a custom input of your own. another option is to use separate date and time inputs, each of which is more widely supported than datetime-local. some browsers may resort to a text-only input element that validates that the results are legitima...
...clicking the down arrow on the right hand side brings up a date picker to allow you to choose a date; you have to enter the time manually. ...
...And 12 more matches

HTML documentation index - HTML: Hypertext Markup Language
ally, a new file should be captured, and which device should be used to capture that new media of a type defined by the accept attribute. values include user and environment. 39 html attribute: crossorigin advanced, attribute, cors, html, needscontent, reference, security the crossorigin attribute, valid on the <audio>, <img>, <link>, <script>, and <video> elements, provides support for cors, defining how the element handles crossorigin requests, thereby enabling the configuration of the cors requests for the element's fetched data. depending on the element, the attribute can be a cors settings attribute. 40 html attribute: max attribute, attributes, constraint validation, html, reference the max attribute defines the maximum value that is acceptable...
...alidation, forms, required the boolean readonly attribute, when present, makes the element not mutable, meaning the user can not edit the control. 47 html attribute: rel attribute, attributes, constraint validation, link, form, rel the rel attribute defines the relationship between a linked resource and the current document. valid on <link>, <a>, <area>, and <form>, the supported values depend on the element on which the attribute is found. 48 html attribute: required attribute, attributes, constraint validation, forms, required the boolean required attribute 49 html attribute: size attribute, html, input, reference, select the size attribute defines the width of the <input> and the height of the <select> element. for the in...
... the input or a special date picker interface. 123 <input type="datetime"> element, html, html forms, input, input element, input type, obsolete, reference, datetime the html <input type="datetime"> was a control for entering a date and time (hour, minute, second, and fraction of a second) as well as a timezone. this feature has been removed from whatwg html, and is no longer supported in browsers. 124 <input type="datetime-local"> date, date and time, element, form input, html, html forms, input, input element, input type, reference, time, datetime-local <input> elements of type datetime-local create input controls that let the user easily enter both a date and a time, including the year, month, and day as well as the time in hours and minutes. ...
...And 12 more matches

WebAssembly.Instance - JavaScript
patibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...thub.com/mdn/browser-compat-data and send us a pull request. ...
...And 12 more matches

SVG fonts - SVG: Scalable Vector Graphics
« previousnext » when svg was specified, support for web fonts was not widespread in browsers. since accessing the correct font file is however crucial for rendering text correctly, a font description technology was added to svg to provide this ability. it was not meant for compatibility with other formats like postscript or otf, but rather as a simple means of embedding glyph information into svg when rendered. svg fonts are currently supported only in safari and android browser. internet explorer hasn't considered implementing this, the functionality has been removed from chrome 38 (and opera 25) and firefox has postponed its implementation indefinitely to concentrate on woff. ...
...ng glyph information into svg when rendered. svg fonts are currently supported only in safari and android browser. internet explorer hasn't considered implementing this, the functionality has been removed from chrome 38 (and opera 25) and firefox has postponed its implementation indefinitely to concentrate on woff. other tools however like the adobe svg viewer plugin, batik and parts of inkscape support svg font embedding. the base for defining an svg font is the <font> element. defining a font there are some ingredients required for embedding a font in svg. let's show an example declaration (the one from the specification), and explain the details. ...
...ols however like the adobe svg viewer plugin, batik and parts of inkscape support svg font embedding. the base for defining an svg font is the <font> element. defining a font there are some ingredients required for embedding a font in svg. let's show an example declaration (the one from the specification), and explain the details. ...
...And 12 more matches

Enhanced Extension Installation - Archive of obsolete content
e directory's extensions folder. this boolean relationship itself is not stored directly in the datasource. rather, if the system needs to know where an item is located, it checks to see if the item is a member of the the appropriate type container (urn:mozilla:extension:root or urn:mozilla:theme:root) in each of the two datasources. this is clumsy. item type the extension system in firefox 1.0 supports only two item types, extensions and themes. this is a by-product of the fact that there are physical per-type containers in the datasource. sections of ui that display installed items are rooted on these containers. tracking item type item type is tracked for the most part by containment in one or other of the two containers. in situations where an item is not yet a member of one of the co...
...that something has changed on the next restart. a copy of the xpi file the item was installed from is set aside since the xpinstall system cleans up the temporary file it hands to the extension system. if the item is not compatible, the extension system asks the appropriate update service (either the one specified by the item, or the default one) if there is remote compatibility information that supercedes the compatibility information held by the item. if there is, and this remote information makes it so that the item is now compatible with the running version of the application, the item is configured in the manner described above (metadata written, added to container). finalization for themes, the item is immediately installed fully, rather than awaiting the next restart, since themes d...
...s the compatibility information held by the item. if there is, and this remote information makes it so that the item is now compatible with the running version of the application, the item is configured in the manner described above (metadata written, added to container). finalization for themes, the item is immediately installed fully, rather than awaiting the next restart, since themes do not supply xpcom components, preferences defaults etc. for extensions, on the next startup, the startup system notices the presence of the .autoreg file and starts the extension manager with a "dirty" flag, telling it to finish any install operations that may be pending. the extension manager loads the xml/rdf datasources (this is allowable and necessary because a major change has happened) and gets a ...
...And 11 more matches

Index - Archive of obsolete content
statustext deprecated, xul attributes, xul reference no summary! 351 stringbundle.src xul attributes, xul reference no summary! 352 style xul attributes, xul reference no summary! 353 subject xul attributes, xul reference no summary! 354 substate xul attributes, xul reference no summary! 355 suppressonselect xul attributes, xul reference no summary! 356 tab.selected xul, xul attributes, xul reference no summary! 357 tabindex xul attributes, xul reference no summary! 358 tabmodalpromptshowing xul, xul methods, xul reference no summary! 359 tabs.onselect xul attributes, xul reference no summary! ...
... of options to specify text or binary writing, the character set, and whether to append to an existing file or create a new one. 434 how to quit a xul application xul, xulrunner script can attempt to quit a xul application, or force the application to quit, using the nsiappstartup interface. 435 how to implement a custom xul query processor component xul supports templating to create a block of content from a datasource query. the xul template guide has lots of detailed information on using xul templates. xul provides template query processors for rdf, xml and sql (mozstorage). the templating system also supports building custom query processors. custom query processors are xpcom components, must implement the nsixultemplatequeryprocessor interface ...
... xpcom components, must implement the nsixultemplatequeryprocessor interface and follow some conventions for when registering the component. 436 index found 1218 pages: 437 international characters in xul javascript firefox, gecko, guide, internationalization, javascript, mozilla, xpcom, xul gecko 1.8, as used in firefox 1.5 and other applications, added support for non-ascii characters in javascript files loaded from xul files. 438 introduction to xul guide, xul mozilla has configurable, downloadable chrome, meaning that the arrangement and even presence or absence of controls in the main window is not hardwired into the application, but loaded from a separate ui description. in fact, most of mozilla's windows (and dialogs) will...
...And 11 more matches

Server-side web frameworks - Learn web development
e now; we'll be working you through the code in our framework-specific modules. overview server-side web frameworks (a.k.a. "web application frameworks") are software frameworks that make it easier to write, maintain and scale web applications. they provide tools and libraries that simplify common web development tasks, including routing urls to appropriate handlers, interacting with databases, supporting sessions and user authorization, formatting output (e.g. html, json, xml), and improving security against web attacks. the next section provides a bit more detail about how web frameworks can ease web application development. we then explain some of the criteria you can use for choosing a web framework, and then list some of your options. what can a web framework do for you? web framewo...
...s'), ('u10', 'under 10s'), ('u11', 'under 11s'), ... #list our other teams ) team_level = models.charfield(max_length=3,choices=team_levels,default='u11') the django model provides a simple query api for searching the database. this can match against a number of fields at a time using different criteria (e.g. exact, case-insensitive, greater than, etc.), and can support complex statements (for example, you can specify a search on u11 teams that have a team name that starts with "fr" or ends with "al"). the second code snippet shows a view function (resource handler) for displaying all of our u09 teams. in this case we specify that we want to filter for all records where the team_level field has exactly the text 'u09' (note below how this criteria is passed...
...f document. web frameworks often provide a mechanism to make it easy to generate other formats from stored data, including json and xml. for example, the django template system allows you to specify variables using a "double-handlebars" syntax (e.g. {{ variable_name }}), which will be replaced by values passed in from the view function when a page is rendered. the template system also provides support for expressions (with syntax: {% expression %}), which allow templates to perform simple operations like iterating list values passed into the template. note: many other templating systems use a similar syntax, e.g.: jinja2 (python), handlebars (javascript), moustache (javascript), etc. the code snippet below shows how this works. continuing the "youngest team" example from the previous s...
...And 11 more matches

Experimental features in Firefox
imental features, you need to download firefox nightly or firefox developer edition. which you need is described alongside each feature's description below. editor's note: when adding features to these tables, please try to include a link to the relevant bug or bugs using the bug macro: {{bug(bug-number)}}. html element: <dialog> the html <dialog> element and its associated dom apis provide support for html-based modal dialog boxes. the current implementation is a little inelegant but is basically functional. see bug 840640 for more details. release channel version added enabled by default? nightly 53 yes developer edition 53 no beta 53 no release 53 no preference name dom.dialog_element.enabled ...
...hey are focused using a mouse or other pointing device. see bug 1617600 for more details. release channel version added enabled by default? nightly 75 no developer edition 75 no beta 75 no release 75 no preference name layout.css.focus-visible.enabled single numbers as aspect ratio in media queries support for using a single <number> as a <ratio> when specifying the aspect ratio for a media query. see bug 1565562 for more details. release channel version added enabled by default? nightly 70 no developer edition 70 no beta 70 no release 70 no preference name layout.css.aspect-ratio-number.enabled p...
...kdrop-filter property applies filter effects to the area behind an element. see bug 1178765 for more details. release channel version added enabled by default? nightly 70 no developer edition 70 no beta 70 no release 70 no preference name layout.css.backdrop-filter.enabled grid: masonry layout adds support for a masonry style layout based on grid layout where one axis has a masonry layout while having normal grid layout on the other. this allows to create gallery style layouts like on pinterest. see bug 1607954 for more details. release channel version added enabled by default? nightly 77 no developer edition 77 no beta 77 no ...
...And 11 more matches

XPCOM primitive
table below. primitives are rarely useful. the main use case is to store primitive values in a data structure that can only store xpcom objects, such as nsiarray. also, certain apis, such as nsitransferable.settransferdata(), require primitives. ...
...are rarely useful. the main use case is to store primitive values in a data structure that can only store xpcom objects, such as nsiarray. also, certain apis, such as nsitransferable.settransferdata(), require primitives. ...
...e that can only store xpcom objects, such as nsiarray. also, certain apis, such as nsitransferable.settransferdata(), require primitives. ...
...And 11 more matches

Using the clipboard
t version. the transferring object will hold the clipboard contents until the application has decided what it needs. this allows the clipboard to be used by another application right away. let's break down the steps needed to copy data to the clipboard. first, we need to create an xpcom object to wrap what we want to copy. we'll assume that we want to copy some text. ...
...terface nsisupportsstring which can be used to represent strings (specifically, unicode strings). the following boilerplate utility functions will be used in all later code examples. // import the services module for future use, if we're not in // a browser window where it's already loaded. components.utils.import('resource://gre/modules/services.jsm'); // create a constructor for the built-in supports-string class. ...
... can be used to represent strings (specifically, unicode strings). the following boilerplate utility functions will be used in all later code examples. // import the services module for future use, if we're not in // a browser window where it's already loaded. components.utils.import('resource://gre/modules/services.jsm'); // create a constructor for the built-in supports-string class. ...
...And 11 more matches

GestureEvent - Web APIs
tibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...github.com/mdn/browser-compat-data and send us a pull request. ...
...And 11 more matches

IDBCursor.key - Web APIs
ibility the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 11 more matches

IDBFactory.deleteDatabase() - Web APIs
the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...e check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 11 more matches

IDBFactory.open() - Web APIs
ibility the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...rom structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ata, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 11 more matches

IDBIndex.count() - Web APIs
bility the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...om structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ta, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 11 more matches

IDBIndex.get() - Web APIs
tibility the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 11 more matches

IDBIndex.getKey() - Web APIs
ility the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...m structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...a, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 11 more matches

IDBIndex.keyPath - Web APIs
lity the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
... structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
..., please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 11 more matches

IDBIndex.multiEntry - Web APIs
y the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ructured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...lease check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 11 more matches

IDBIndex.objectStore - Web APIs
the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...uctured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ease check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 11 more matches

IDBIndex.openCursor() - Web APIs
y the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ructured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...lease check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 11 more matches

IDBIndex.openKeyCursor() - Web APIs
the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...tured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...se check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 11 more matches

IDBIndex.unique - Web APIs
ility the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...m structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...a, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 11 more matches

IDBObjectStore.add() - Web APIs
tibility the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 11 more matches

IDBObjectStore.autoIncrement - Web APIs
the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...tured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...se check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 11 more matches

IDBObjectStore.clear() - Web APIs
bility the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...om structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ta, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 11 more matches

IDBObjectStore.count() - Web APIs
bility the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...om structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ta, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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IDBObjectStore.createIndex() - Web APIs
the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...uctured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ease check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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IDBObjectStore.delete() - Web APIs
ility the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...m structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...a, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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IDBObjectStore.deleteIndex() - Web APIs
the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...uctured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ease check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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IDBObjectStore.get() - Web APIs
tibility the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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IDBObjectStore.index() - Web APIs
bility the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...om structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ta, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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IDBObjectStore.indexNames - Web APIs
y the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ructured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...lease check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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IDBObjectStore.keyPath - Web APIs
lity the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
... structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
..., please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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IDBObjectStore.openCursor() - Web APIs
y the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ructured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...lease check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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IDBObjectStore.put() - Web APIs
tibility the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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IDBObjectStore.transaction - Web APIs
the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...uctured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ease check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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IDBOpenDBRequest.onblocked - Web APIs
y the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...tructured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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IDBOpenDBRequest.onupgradeneeded - Web APIs
he compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...red data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
... check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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IDBTransaction.db - Web APIs
atibility the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
... from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
... data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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IDBVersionChangeEvent.newVersion - Web APIs
y the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ructured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...lease check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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IDBVersionChangeEvent.oldVersion - Web APIs
y the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ructured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...lease check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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KeyboardEvent.getModifierState() - Web APIs
ko? ...
...fn key on mac keyboard doesn't cause this active. "fnlock" not...
...d level 3 shift key (or level 5 shift key ) pressed ⌥ option key pressed not supported "capslock" during led for ⇪ caps lock turned on not supported while capslock is locked "control" either ctrl key or altgr key pressed ctrl key pressed control key pressed menu key pressed. ctrl key, control key or menu key pressed. "fn" not supported function key is pressed, but we're not sure what key makes the modifier state active. fn key on mac keyboard doesn't cause this active. ...
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Window.showModalDialog() - Web APIs
ble in this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...//github.com/mdn/browser-compat-data and send us a pull request. ...
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font-variant-position - CSS: Cascading Style Sheets
the font-variant-position css property controls the use of alternate, smaller glyphs that are positioned as superscript or subscript. the glyphs are positioned relative to the baseline of the font, which remains unchanged. these glyphs are typically used in <sub> and <sup> elements. /* keyword values */ font-variant-position: normal; font-variant-position: sub; font-variant-position: super; /* global values */ font-variant-position: inherit; font-variant-position: initial; font-variant-position: unset; when the usage of these alternate glyphs is activated, if one character in the run doesn't have such a typographically-enhanced glyph, the whole set of characters of the run is rendered using a fallback method, synthesizing these glyphs. these alternate glyphs share the same em-box and t...
...dered using a fallback method, synthesizing these glyphs. these alternate glyphs share the same em-box and the same baseline as the rest of the font. they are merely graphically enhanced, and have no effect on the line-height and other box characteristics. syntax the font-variant-position property is specified as one of the keyword values listed below. values normal deactivates alternate superscript and subscript glyphs. sub activates subscript alternate glyphs. if, in a given run, one such glyph is not available for a character, all the characters in the run are rendered using synthesized glyphs. super activates superscript alternate glyphs. if, in a given run, one such glyph is not available for a character, all the characters in the run are rendered using synthesized glyphs. ...
...glyphs. super activates superscript alternate glyphs. if, in a given run, one such glyph is not available for a character, all the characters in the run are rendered using synthesized glyphs. formal definition initial valuenormalapplies toall elements. ...
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Authoring MathML - MathML
our demos and mathml references for more details. using mathml mathml in html pages you can use presentation mathml inside html5 documents: <!doctype html> <html> <head> <title>mathml in html5</title> </head> <body> <h1>mathml in html5</h1> <p> square root of two: <math> <msqrt> <mn>2</mn> </msqrt> </math> </p> </body> </html> content mathml is not supported by browsers. it's recommended to convert your content mathml markup into presentation mathml before publishing it, for example with the help of the ctop.xsl stylesheet. tools mentioned on this page generates presentation mathml. fallback for browsers without mathml support unfortunately, some browsers are not able to render mathml equations or only have a limited support. hence you will ...
...tead consider using the heavier mathjax library as a mathml polyfill: <script src="https://fred-wang.github.io/mathjax.js/mpadded-min.js"></script> note that these two scripts perform feature detection of the mspace or mpadded elements (see the browser compatibility table on these pages). there is also a similar script to display a warning at the top of the page for browsers without good mathml support and let the users choose between one of the fallback above: <script src="https://fred-wang.github.io/mathml-warning.js/mpadded-min.js"></script> if you don't want to use this link to github but instead to integrate these polyfills or others in your own project, you might need the detection scripts to verify the level of mathml support. for example the following function verifies the mathml ...
...port and let the users choose between one of the fallback above: <script src="https://fred-wang.github.io/mathml-warning.js/mpadded-min.js"></script> if you don't want to use this link to github but instead to integrate these polyfills or others in your own project, you might need the detection scripts to verify the level of mathml support. ...
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Features restricted to secure contexts - Web security
this reference lists the web platform features available only in secure contexts — see secure contexts for a definition and more details. current features available only in secure contexts this section lists all the apis available only in secure contexts, along with browser versions the limitation was introduced in, as appropriate. ...
...texts — see secure contexts for a definition and more details. current features available only in secure contexts this section lists all the apis available only in secure contexts, along with browser versions the limitation was introduced in, as appropriate. note: only the browsers that actually support secure contexts are listed in this document. see here for information on secure contexts support. ...
...s this section lists all the apis available only in secure contexts, along with browser versions the limitation was introduced in, as appropriate. note: only the browsers that actually support secure contexts are listed in this document. see here for information on secure contexts support. ...
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cfx - Archive of obsolete content
cfx is no longer supported as of firefox 44 and no longer accepted for add-on submission. jpm should now be used instead. for information on how to migrate from cfx to jpm see this guide. enables you to test, run, and package add-ons. cfx is is no longer supported as of firefox 44 and no longer accepted for add-on submission, jpm should now be used instead. cfx usage is: cfx [options] command [command-specific options] "options" are global options applicable to the tool itself or to all commands (for example --help). cfx supports the following global options: -h, --help - show a help message and exit -v, --verbose - enable lots of output "command-specific options" are documented alongside the commands. ...
... cfx run launch an instance of firefox with your add-on installed. ...
... main.md lib main.js package.json readme.md tests test-main.js cfx run this command is used to run the add-on. called with no options it looks for a file called package.json in the current directory, loads the corresponding add-on, and runs it under the version of firefox it finds in the platform's default install path. supported options you can point cfx run at a different package.json file using the --pkgdir option, and pass arguments to your add-on using the --static-args option. you can specify a different version of the host application using the --binary option, passing in the path to the application binary to run. the path may be specified as a full path or may be relative to the current directory. but note...
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Index - Learn web development
nter, showing how they can help us solve such problems. 55 making asynchronous programming easier with async and await beginner, codingscripting, guide, javascript, learn, promises, async, asynchronous, await more recent additions to the javascript language are async functions and the await keyword, part of the so-called ecmascript 2017 javascript edition (see ecmascript next support in mozilla). these features basically act as syntactic sugar on top of promises, making asynchronous code easier to write and to read afterwards. they make async code look more like old-school synchronous code, so they're well worth learning. this article gives you what you need to know. 56 client-side web apis api, articles, beginner, codingscripting, dom, graphics, javascript...
... the next set of selectors we will look at are referred to as pseudo-classes and pseudo-elements. there are a large number of these, and they often serve quite specific purposes. once you know how to use them, you can look at the list to see if there is something which works for the task you are trying to achieve. once again the relevant mdn page for each selector is helpful in explaining browser support. 111 test your skills: selectors beginner, css the aim of this task is to help you check your understanding of selectors in css. 112 test your skills: the box model beginner, css the aim of this task is to help you check your understanding of the css box model. 113 type, class, and id selectors beginner, css, class, learn, selectors, id...
..., sizing, viewport units this lesson has given you a rundown of some key issues that you might run into when sizing things on the web. when you move onto css layout, sizing will become very important in mastering the different layout methods, so it is worth understanding the concepts here before moving on. 124 styling tables article, beginner, css, codingscripting, guide, needsupdate, styling, tables with styling tables now behind us, we need something else to occupy our time. the next article explores debugging css — how to solve problems such as layouts not looking like they should, or properties not applying when you think they should. this includes information on using browser devtools to find solutions to your problems. 125 test your skills: images...
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NSS_3.12_release_notes.html
note: firefox 3 uses nss 3.12, but not the new sqlite-based shareable certificate and key databases. we missed the deadline to enable that feature in firefox 3. distribution information the cvs tag for the nss 3.12 release is nss_3_12_rtm. nss 3.12 requires nspr 4.7.1. see the documenta...
...uleex (see secmod.h) sec_getregisteredhttpclient (see ocsp.h) sec_pkcs5isalgorithmpbealgtag (see secpkcs5.h) vfy_createcontextdirect (see cryptohi.h) vfy_createcontextwithalgorithmid (see cryptohi.h) vfy_verifydatadirect (see cryptohi.h) vfy_verifydatawithalgorithmid (see cryptohi.h) vfy_verifydigestdirect (see cryptohi.h) vfy_verifydigestwithalgorithmid (see cryptohi.h) new macros for camellia support (see blapit.h): nss_camellia nss_camellia_cbc camellia_block_size new macros for rsa (see blapit.h): rsa_max_modulus_bits rsa_max_exponent_bits new macros in certt.h: x.509 v3 ku_encipher_only cert_max_serial_number_bytes cert_max_dn_bytes pkix cert_rev_m_do_not_test_using_this_method cert_rev_m_test_using_this_method cert_rev_m_allow_network_fetching cert_rev_m_forbid_network_fetchi...
...t.h) sec_oid_pkcs12_key_usage changed to sec_oid_bogus_key_usage sec_oid_ansix962_ecdsa_signature_with_sha1_digest changed to sec_oid_ansix962_ecdsa_sha1_signature note: sec_oid_ansix962_ecdsa_signature_with_sha1_digest is also kept for compatibility reasons. ...
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Finishing the Component
faces and functions are part of the gecko sdk. the rule of thumb is that interfaces outside of the sdk are considered "experimental" or unfrozen. see the following sidebar for information about how frozen and unfrozen interfaces can affect your component development, and for technical details about how interface changes beneath your code can cause havoc. ...
...ng unfrozen interfaces suppose that you need to use the interface nsifoo that isn't frozen. you build your component using this interface, and it works great with the version of gecko that you have tested against. however, some point in the future, the nsifoo interface requires a major change, and methods are reordered, some are added, others are removed. moreover, since this interface was never supposed to be used by clients other than gecko or mozilla, the maintainers of the interface don't know that it's being used, and don't change the iid of the interface. when your component runs in a version of gecko in which this interface is updated, your method calls will be routed through a different v-table than the one the component expected, most likely resulting in a crash. below, the compone...
... interface; the first entry in the v-table is in fact isprime(). when this method call is made, the code execution treats the isprime method as testa. needless to say, this is a bad thing. furthermore, there is no way easy way to realize this error at runtime. gecko developers could change the interface's iid, and some do. this can prevent many errors like this. but unfrozen interfaces are not supported in any formal way, and relying upon a different iid for any change in the interface is not a good idea either. when using frozen interfaces, you are guaranteed compatibility with future versions of gecko. the only trouble occurs when the compiler itself changes its v-table layout, which can happen when the compiler changes its abi. for example, in 2002 the gnu compiler collection (gcc), ve...
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AddressErrors - Web APIs
rs dictionary is used by the payment request api to to report validation errors in a physical address (typically a billing address or a shipping address). any members which is present indicates that a validation error occurred for the member of the same name in an address described using paymentaddress. addresserrors is the type of the object returned by shippingaddresserrors in the paymentdetailsupdate passed into paymentrequestupdateevent.updatewith() by the shippingaddresschange event handler if a change to the address resulted in a validation error occurring. see the examples below to see how this works. properties addressline a domstring which, if present, indicates that the addressline property of the paymentaddress could not be validated. the contents of the string provide a hum...
...of the example above (except of course that it's not connected to an actual payment handler, so no payments are actually processed). in the example, we're handling a donation to an organization that will be sending a "thank you" gift to the donor, so it requests shipping information along with allowing the donation payment itself. ...
...tually processed). in the example, we're handling a donation to an organization that will be sending a "thank you" gift to the donor, so it requests shipping information along with allowing the donation payment itself. javascript payment request data first, we declare the variables supportedhandlers, which is compatible with paymentmethoddata, and defaultpaymentdetails, which is a paymentdetailsupdate object. ...
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readValue() - Web APIs
otherwise it throws an error. syntax bluetoothremotegattdescriptor.readvalue().then(function(value[]) { ... }) returns a promise that resolves to an arraybuffer. specifications specification status comment web bluetooththe definition of 'readvalue()' in that specification. draft initial definition. browser compatibility the compatibility table on this page is generated from structured data. ...
...atibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetreadvalue experimentalchrome full support 57notes full support 57notes notes macos only. full support 57notes disabled notes linux and versions of windows earlier than 10.disabled from version 57: this feature is behind the #enable-experimental-web-platform-features preference (needs to be set to enabled). to change...
...port 57notes notes macos only. full support 57notes disabled notes linux and versions of windows earlier than 10.disabled from version 57: this feature is behind the #enable-experimental-web-platform-features preference (needs to be set to enabled). to change preferences in chrome, visit chrome://flags. full support 70notes notes windows 10.edge full support ≤79notes full support ≤79notes notes macos only. ...
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Event.initEvent() - Web APIs
ent('click', true, false); // listen for the event. elem.addeventlistener('click', function (e) { // e.target matches elem }, false); elem.dispatchevent(event); specifications specification status comment domthe definition of 'event.initevent()' in that specification. living standard from document object model (dom) level 2 events specification, deprecated it, superseded by event constructors. document object model (dom) level 2 events specificationthe definition of 'event.initevent()' in that specification. obsolete initial definition. browser compatibility the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and s...
...mpatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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FederatedCredential - Web APIs
the federatedcredential interface of the the credential management api provides information about credentials from a federated identity provider. a federated identity provider is an entity that a website trusts to correctly authenticate a user, and that provides an api for that purpose. openid connect is an example of a federated identity provider framework. in browsers that support it, an instance of this interface may be passed in the credential member of the init object for global fetch. constructor federatedcredential() creates a new federatedcredential object. properties inherits properties from its ancestor, credential. federatedcredential.provider read only returns a usvstring containing a credential's federated identity provider. federatedcredential.protocol ...
...table in this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ke to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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IDBVersionChangeRequest - Web APIs
his page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...e to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...net exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetidbversionchangerequest deprecatednon-standardchrome no support 12 — 23prefixed no support 12 — 23prefixed prefixed implemented with the vendor prefix: webkitedge ? ...
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PaymentRequest.onshippingoptionchange - Web APIs
ed by the user agent changes at any time during a payment process, the event is triggered. to make sure an updated option is included when sending payment information to the server, you should add event listeners for a paymentrequest object after instantiation, but before the call to show(). // initialization of paymentrequest arguments are excerpted for clarity. ...
...ts are excerpted for clarity. ...
...ar shippingoption = { id: '', label: '', amount: { currency: 'usd', value: '0.00' }, selected: true }; // shipping to us is supported if (addr.country === 'us') { shippingoption.id = 'us'; shippingoption.label = 'standard shipping in us'; shippingoption.amount.value = '0.00'; details.total.amount.value = '55.00'; // shipping to jp is supported } else if (addr.country === 'jp') { shippingoption.id = 'jp'; shippingoption.label = 'international shipping'; shippingoption.amount.value = '10.00'; details.total.amount.value = '65.00'; // shipping to elsewhere is unsupported } else { // empty array indicates rejection of the address details.shippingoptions = []; return promise.resolve...
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PhotoCapabilities - Web APIs
capabilities object is retrieved by calling imagecapture.getphotocapabilities(). properties photocapabilities.redeyereduction read only returns one of "never", "always", or "controllable". the "controllable" value means the device's read-eye reduction is controllable by the user. photocapabilities.imageheight read only returns a mediasettingsrange object indicating the image height range supported by the user agent. photocapabilities.imagewidth read only returns a mediasettingsrange object indicating the image width range supported by the user agent. photocapabilities.filllightmode read only returns an array of available fill light options. options may include auto, off, or flash. example the following example, extracted from chrome's image capture / photo resolution sample,...
...y table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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PushEvent.PushEvent() - Web APIs
e on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...o contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ser-compat-data and send us a pull request. desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetpushevent() constructor experimentalchrome full support 42edge full support 16disabled full support 16disabled disabled from version 16: this feature is behind the enable service workers preference. ...
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PushEvent.data - Web APIs
compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ta. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...github.com/mdn/browser-compat-data and send us a pull request. desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetdata experimentalchrome full support 57edge full support 16disabled full support 16disabled disabled from version 16: this feature is behind the enable service workers preference. ...
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StorageManager.persist() - Web APIs
ility the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
... structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
..., please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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Window.event - Web APIs
the read-only window property event returns the event which is currently being handled by the site's code. outside the context of an event handler, the value is always undefined. you should avoid using this property in new code, and should instead use the event passed into the event handler function. this property is not universally supported and even when supported introduces potential fragility to your code. note: this property can be fragile, in that there may be situations in which the returned event is not the expected value. in addition, window.event is not accurate for events dispatched within shadow trees. specifications specification status comment domthe definition of 'window.event' in that specification. living standard initial definition. ...
...ibility the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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Web applications and ARIA FAQ - Accessibility
provides additional structural information, helping authors identify landmarks, regions, and grids on their pages. aria enables dynamic, javascript-driven applications and widgets to interoperate with a variety of desktop-based assistive technologies. for more information about how to create accessible widgets with aria, see the overview of accessible web applications and widgets. where is aria supported? aria is a relatively new specification, but support for it is growing. a wide variety of commonly-used browsers, assistive technologies, javascript toolkits, and applications now support aria. however, many users may still be using older versions of these technologies. you may want to consider implementing aria using progressive enhancement techniques—such as adding aria using javascrip...
...for it is growing. a wide variety of commonly-used browsers, assistive technologies, javascript toolkits, and applications now support aria. however, many users may still be using older versions of these technologies. you may want to consider implementing aria using progressive enhancement techniques—such as adding aria using javascript, not directly to your markup—in order to more gracefully support older browsers and assistive technologies. ...
... technologies, javascript toolkits, and applications now support aria. however, many users may still be using older versions of these technologies. you may want to consider implementing aria using progressive enhancement techniques—such as adding aria using javascript, not directly to your markup—in order to more gracefully support older browsers and assistive technologies. browsers aria is supported in the following browsers: browser minimum version notes firefox 3.0+ works with nvda, jaws 10+, and orca chrome latest screen reader support still experimental as of chrome 15 safari 4+ safari 5 support is much improved. ...
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quotes - CSS: Cascading Style Sheets
bility the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ructured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
... out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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ruby-position - CSS: Cascading Style Sheets
ibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
... if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
... https://github.com/mdn/browser-compat-data and send us a pull request. ...
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Live streaming web audio and video - Developer guides
media will start playing more quickly adaptive streaming makes for better experiences on a variety of devices media is downloaded just in time which makes bandwidth usage more efficient streaming protocols while static media is usually served over http, there are several protocols for serving adaptive streams; let's take a look at the options. http for now, http is by far the most commonly supported protocol used to transfer media on demand or live. rtmp real time messaging protocol (rtmp) is a proprietary protocol developed by macromedia (now adobe) and supported by the adobe flash plugin. rtmp comes in various flavours including rtmpe (encrypted), rtmps (secure over ssl/tls) and rtmpt (encapsulated within http requests). rtsp real time streaming protocol (rtsp) controls media se...
...vours including rtmpe (encrypted), rtmps (secure over ssl/tls) and rtmpt (encapsulated within http requests). rtsp real time streaming protocol (rtsp) controls media sessions between endpoints and is often used together with real-time transport protocol (rtp) and with real-time control protocol (rtcp) for media stream delivery. using rtp with rtcp allows for adaptive streaming. ...
...pt (encapsulated within http requests). rtsp real time streaming protocol (rtsp) controls media sessions between endpoints and is often used together with real-time transport protocol (rtp) and with real-time control protocol (rtcp) for media stream delivery. using rtp with rtcp allows for adaptive streaming. this is not yet supported natively in most browsers, but be aware that firefox os 1.3 supports rtsp. ...
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<input type="month"> - HTML: Hypertext Markup Language
e value is in the format "yyyy-mm", where yyyy is the four-digit year and mm is the month number. the source for this interactive example is stored in a github repository. if you'd like to contribute to the interactive examples project, please clone https://github.com/mdn/interactive-examples and send us a pull request. ...
...epository. if you'd like to contribute to the interactive examples project, please clone https://github.com/mdn/interactive-examples and send us a pull request. the control's ui varies in general from browser to browser; at the moment support is patchy, with only chrome/opera and edge on desktop — and most modern mobile browser versions — having usable implementations. in browsers that don't support month inputs, the control degrades gracefully to a simple <input type="text">, although there may be automatic validation of the entered text to ensure it's formatted as expected. for those of you using a browser that doesn't support month, the screenshot below shows what it looks like in chrome and opera. clicking the down arrow on the right hand side brings up a date picker that lets you s...
... idl attributes value methods select(), stepdown(), stepup(). value a domstring representing the value of the month and year entered into the input, in the form yyyy-mm (four or more digit year, then a hyphen ("-"), followed by the two-digit month). ...
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WebAssembly.CompileError - JavaScript
bility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ou'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
....com/mdn/browser-compat-data and send us a pull request. ...
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WebAssembly.Global - JavaScript
ompatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ta. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...//github.com/mdn/browser-compat-data and send us a pull request. ...
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WebAssembly.LinkError - JavaScript
atibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...f you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...hub.com/mdn/browser-compat-data and send us a pull request. ...
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WebAssembly.RuntimeError - JavaScript
bility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ou'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
....com/mdn/browser-compat-data and send us a pull request. ...
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XUL Migration Guide - Archive of obsolete content
this guide aims to help you migrate a xul-based add-on to the sdk. first we'll outline how to decide whether your add-on is a good candidate for migration via a comparison of the benefits and limitations of the sdk versus xul development. ...
... this guide aims to help you migrate a xul-based add-on to the sdk. first we'll outline how to decide whether your add-on is a good candidate for migration via a comparison of the benefits and limitations of the sdk versus xul development. ...
... if your add-on needs a lot of help from third party packages, low-level apis, or xpcom, then the cost of migrating is high, and may not be worth it at this point. ...
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Introduction to Public-Key Cryptography - Archive of obsolete content
e. for more information about the role of cas, see "how ca certificates are used to establish trust". authentication confirms an identity authentication is the process of confirming an identity. in the context of network interactions, authentication involves the confident identification of one party by another party. authentication over networks can take many forms. certificates are one way of supporting authentication. network interactions typically take place between a client, such as browser software running on a personal computer, and a server, such as the software and hardware used to host a web site. client authentication refers to the confident identification of a client by a server (that is, identification of the person assumed to be using the client software). server authenticati...
...a client by a server (that is, identification of the person assumed to be using the client software). server authentication refers to the confident identification of a server by a client (that is, identification of the organization assumed to be responsible for the server at a particular network address). client and server authentication are not the only forms of authentication that certificates support. for example, the digital signature on an email message, combined with the certificate that identifies the sender, provide strong evidence that the person identified by that certificate did indeed send that message. similarly, a digital signature on an html form, combined with a certificate that identifies the signer, can provide evidence, after the fact, that the person identified by that ce...
...s of server authentication via ssl. the user has requested a resource controlled by the server. the server requires client authentication before permitting access to the requested resource. these are the steps shown in figure 4: in response to an authentication request from the server, the client displays a dialog box requesting the user's name and password for that server. the user must supply a name and password separately for each new server the user wishes to use during a work session. the client sends the name and password across the network, either in the clear or over an encrypted ssl connection. the server looks up the name and password in its local password database and, if they match, accepts them as evidence authenticating the user's identity. the server determines whet...
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Client-side form validation - Learn web development
try out the new behavior in the example below: note: you can find this example live on github as fruit-validation.html (see also the source code.) try submitting the form without a value. note how the invalid input gets focus, a default error message ("please fill out this field") appears, and the form is prevented from being sent. the presence of the required attribute on any element that supports this attribute means the element matches the :required pseudoclass whether it has a value or not. if the <input> has no value, the input will match the :invalid pseudoclass. note: for good user experience, indicate to the user when form fields are required. it isn't only good user experience, it is required by wcag accessibility guidelines. also, only require users to input data you actual...
...ashed red; } input:valid { border: 2px solid black; } this gives us the following update — try it out: note: you can find this example live on github as fruit-pattern.html (see also the source code.) in this example, the <input> element accepts one of four possible values: the strings "banana", "banana", "cherry", or "cherry". regular expressions are case-sensitive, but we've made it support capitalized as well as lower-case versions using an extra "aa" pattern nested inside square brackets. at this point, try changing the value inside the pattern attribute to equal some of the examples you saw earlier, and look at how that affects the values you can enter to make the input value valid. try writing some of your own, and see how it goes. make them fruit-related where possible so ...
...t will match the :invalid pseudoclass. note: some <input> element types don't need a pattern attribute to be validated against a regular expression. specifying the email type, for example, validates the inputs value against a well-formed email address pattern or a pattern matching a comma-separated list of email addresses if it has the multiple attribute. note: the <textarea> element doesn't support the pattern attribute. constraining the length of your entries you can constrain the character length of all text fields created by <input> or <textarea> by using the minlength and maxlength attributes. a field is invalid if it has a value and that value has fewer characters than the minlength value or more than the maxlength value. browsers often don't let the user type a longer value th...
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Introduction to client-side frameworks - Learn web development
here are many frameworks out there, but currently the "big four" are considered to be the following. ember ember was initially released in december 2011 as a continuation of work that started in the sproutcore project. it is an older framework that has less users than more modern alternatives such as react and vue, but it still enjoys a fair amount of popularity due to its stability, community support, and some clever coding principles. start learning ember angular angular is an open-source web application framework led by the angular team at google and by a community of individuals and corporations. it is a complete rewrite from the same team that built angularjs. angular was officially released on the 14th of september 2016. angular is a component-based framework which uses declarati...
...of individuals and corporations. it is a complete rewrite from the same team that built angularjs. angular was officially released on the 14th of september 2016. angular is a component-based framework which uses declarative html templates. at build time, transparently to developers, the framework's compiler translates the templates to optimized javascript instructions. angular uses typescript, a superset of javascript that we’ll look at in a little more detail in the next chapter. vue evan you first released vue in 2014, after working on and learning from the original angularjs project. vue is the youngest of the big four, but has enjoyed a recent uptick in popularity. vue, like angularjs, extends html with some of its own code. apart from that, it mainly relies on modern, standard java...
...– by dealing with the dom interactions for you, behind the scenes. this abstraction is great for your experience as a developer, but it isn't free. in order to translate what you write into dom changes, frameworks have to run their own code, which in turn makes your final piece of software larger and more computationally expensive to operate. some extra code is inevitable, and a framework that supports tree-shaking (removal of any code that isn't actually used in the app during the build process) will allow you to keep your applications small, but this is still a factor you need to keep in mind when considering your app's performance, especially on more network/storage-constrained devices, like mobile phones. the abstraction of frameworks affects not only your javascript, but your relatio...
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Accessibility Features in Firefox
in recent articles from both afb's access world and nfb's voice of the nation's blind, reviewers found no significant roadblocks in moving to firefox from internet explorer for screen reader users. in fact, the same keyboard commands are still available, so users can become comfortable and productive right away. ...
...in recent articles from both afb's access world and nfb's voice of the nation's blind, reviewers found no significant roadblocks in moving to firefox from internet explorer for screen reader users. in fact, the same keyboard commands are still available, so users can become comfortable and productive right away. ...
...xplorer for screen reader users. in fact, the same keyboard commands are still available, so users can become comfortable and productive right away. screen magnifier users can also benefit from firefox's powerful features today, as caret and focus tracking are fully enabled. mozilla corporation is currently reaching out to work with ai squared, the makers of zoomtext, in order to enable complete support of advanced zoomtext features such as the doc reader and app reader. we are also optimistic that the the makers of magic and lunar/supernova will add firefox support in the coming year. mozilla has support for dragon naturally speaking. some users of the professional version are happily playing with dragon and firefox. we are optimistic that nuance will work to improve access to the user int...
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Mozilla accessibility architecture
this page is maintained by aaron leventhal and by the mozilla accessibility community. feedback and constructive suggestions are encouraged. 1. intro this document is for people who wish to understand the architecture of mozilla's accessibility api module, which provides support for platform accessibility apis. accessibility apis are used by 3rd party software like screen readers, screen magnifiers, and voice dictation software, which need information about document content and ui controls, as well as important events like changes of focus. mozilla supports two accessibility apis: microsoft active accessibility (msaa) on windows and accessibility tool kit (atk) on linux and unix. we do not currently support the carbon accessibility model for apple's os x. please note, the documentatio...
...if you're interested in linux or unix accessibility, check out mozilla's atk project page. readers of this document should be familiar with interfaces, the w3c dom, xul and the concept of a layout object tree. 2. ...
...the code in a cross platform manner, and then deal with the platform differences on a consistent manner. the shared code makes itself available to the toolkit-specific code via generic xpcom interfaces that return information about objects we want to expose. all focusable nodes, tables and text have accessibility interfaces. we call these objects "accessible nodes". ...
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A bird's-eye view of the Mozilla framework
urpose the purpose of this article is to provide a high-level technical overview of the architecture of the extensible, object-based mozilla application framework. it examines what happens when the user performs a simple user interface (ui) action such as clicking a link in the contents panel of the help viewer window shown below. the article focuses on the architecture of the overall framework supporting the mozilla application suite, not the architecture of the individual applications themselves. prerequisites this article assumes you have access to mozilla sources and are familiar with the directory structure of the source tree. the code samples in the article are based on mozilla/5.0 (windows; u; windows nt 5.1; en-us; rv:1.9a1) gecko/20051104 seamonkey/1.1a from a new source tree c...
...liar with the javascript and c++ programming languages, object-oriented programming (oop) terminology and design concepts, the microsoft® component object model (com), and the corba omg interface definition language (idl). organization this article first covers some conceptual groundwork, then walks through a user scenario to illustrate how key mozilla architectural components work together to support a simplehelp viewer ui action. framework layers at a high level, you can think of the mozilla framework as consisting of a suite of applications, each of which is organized into three basic layers depicted in figure 1. figure 1. user interface (ui) widgets and services the x window system toolkit defines the termwidget as a pre-defined object that encapsulates both the command actio...
...connect. xpconnect also provides a required layer for xpcom components written in a scripting language. let’s consider a resource description framework (rdf) example, where rdf is a framework for describing and interchangingmetadata, that is, information about information. in this example, we’re interested in the rdf sub-graph underlying thecontents panel widget within thehelp viewer window. suppose the client already has an nsirdfdatasource object representing a sub-graph of an rdf graph and calls nsirdfdatasource.gettarget(resource, nc_link, true) to obtain an nsirdfnode representing a specific node in the graph, in this case a link to ahelp viewer document page. the client is completely unaware of which c++ class (or other language) actually implements nsirdfnode; it only interacts wi...
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Mozilla Web Developer FAQ
block. if the table cells that contain only an image are marked with <td class="imgcell">, the required css rule is: .imgcell img, .imgcell a { display: block; } longer explanation… why are there still gaps even between text rows in tables when the layout engine is in the standards mode or in the almost standards mode? in the standards mode and in the almost standards mode mozilla does not suppress the default margins of the first and last child element in table cells. therefore, the default margins for paragraphs apply even with markup such as <td><p>foo</p></td>. often the content of a cell in a table of tabular data does not constitute a paragraph. in that case, the easy solution is not to mark the contents of the cell as a paragraph. when the paragraph markup is called for but th...
...he block box itself. a block is centered by setting its margin-left and margin-right to auto and its width to a value that makes the block narrower than its containing block. it is also possible, although not very likely, that you are seeing a bug. javascript doesn’t work! why? some proprietary document objects such as document.all and document.layers are not part of the w3c dom and are not supported in mozilla. (there is partial undetectable support for document.all, though, in newer versions of mozilla. however, that functionality only exists for compatibility with sites authored specifically for ie. you should not rely on mozilla’s document.all support on new pages.) the method document.getelementbyid() can be used instead. in the standards mode mozilla does not generate implicit ...
...uthors to misuse the attribute. when the alternative text is shown in a tooltip, some authors write bad alt texts, because they intend the text as auxiliary tooltip text and not as a replacement for the image. (‘bad’ in the sense that the textual alternative is less useful for people who don’t see the image.) when the alternative text is shown in a tooltip, other authors don’t want to supply textual alternatives at all, because they don’t want tooltips to appear. (again, making things harder for people who don’t see the image.) there is another attribute that mozilla shows as a tooltip: title. in fact, the html 4.01 specification suggests that the title attribute may be displayed as a tooltip. however, this particular display method is not required and some other browsers sh...
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NSS FAQ
general questions what is network security services (nss) nss is set of libraries, apis, utilities, and documentation designed to support cross-platform development of security-enabled client and server applications. it provides a complete open-source implementation of the crypto libraries used by mozilla and other companies in the firefox browser, aol instant messenger (aim), server products from red hat, and other products. for an overview of nss, see overview of nss. for detailed information on the open-source nss project, see nss project page. what can i do with nss? is nss appropriate for my application? if you want add support for ssl, s/mime, or other internet security standards to your application, you can use network security services (nss) to do so. because nss provides...
...d hat, and other products. for an overview of nss, see overview of nss. for detailed information on the open-source nss project, see nss project page. what can i do with nss? is nss appropriate for my application? if you want add support for ssl, s/mime, or other internet security standards to your application, you can use network security services (nss) to do so. because nss provides complete support for all versions of ssl and tls, it is particularly well-suited for applications that need to communicate with the many clients and servers that already support the ssl protocol. the pkcs #11 interface included in nss means that your application can use hardware accelerators on the server and smart cards for two-factor authentication. how does nss compare to openssl? openssl is an open s...
...te with the many clients and servers that already support the ssl protocol. the pkcs #11 interface included in nss means that your application can use hardware accelerators on the server and smart cards for two-factor authentication. how does nss compare to openssl? openssl is an open source project that implements server-side ssl, tls, and a general-purpose cryptography library. it does not support pkcs #11. it is based on the ssleay library developed by eric a. young and tim j. hudson. openssl is widely used in apache servers and is licensed under an apache-style licence. nss supports both server and client applications as well as pkcs #11 and s/mime. to permit its use in as many contexts as possible, nss is licensed under the mozilla public license, version 2. how does nss compare ...
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NSS 3.14 release notes
the nss license has changed to mpl 2.0. previous releases were released under a mpl 1.1/gpl 2.0/lgpl 2.1 tri-license. ...
... the nss license has changed to mpl 2.0. previous releases were released under a mpl 1.1/gpl 2.0/lgpl 2.1 tri-license. ...
... the nss license has changed to mpl 2.0. previous releases were released under a mpl 1.1/gpl 2.0/lgpl 2.1 tri-license. ...
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PKCS11 Implement
implementing pkcs #11 for nss note: this document was originally for the netscape security library that came with netscape communicator 4.0. this note will be removed once the document is updated for the current version of nss. this document supplements the information in pkcs #11: cryptographic token interface standard, version 2.0 with guidelines for implementors of cryptographic modules who want their products to work with mozilla client software: how nss calls pkcs #11 functions. function-specific information organized in the same categories as the pkcs #11 specification. functions for different kinds of tokens. summarizes the support nss expects from different kinds of tokens. installation. installing modules and informing the user of changes in the cryptographic modules se...
...how nss calls pkcs #11 functions this section is organized according to the categories used in pkcs #11: cryptographic token interface standard, version 2.0. to understand this section, you should be familiar with the standard specification. ...
...in the single c_initialize parameter preserved. c_finalize the nss calls c_finalize on shutdown and whenever it unloads a module. c_getfunctionlist the nss calls c_getfunctionlist on startup or when it loads a new module. the function list returned should include all the pkcs 2.0 function calls. if you don't implement a function, you should still provide a stub that returns ckr_function_not_supported. c_getinfo the nss calls c_getinfo on startup or when it loads a new module. the version numbers, manufacturer ids, and so on are displayed when the user views the information. the supplied library names are used as the default library names; currently, these names should not include any double quotation marks. (this is more restrictive than pkcs 2.0 and may change in future versions of ...
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nsIDragService
add-ons should use the standard datatransfer drag and drop api instead. the only exception is getcurrentsession(), since there's currently no way to check for a drag in progress using standard dom methods or properties. ...
... enddragsession( in prbool adonedrag ) ; void dragmoved(in long ax, in long ay); native code only! void firedrageventatsource(in unsigned long amsg); obsolete since gecko 43 void firedrageventatsource(in mozilla::eventmessage aeventmessage); native code only! ...
...g); obsolete since gecko 43 void firedrageventatsource(in mozilla::eventmessage aeventmessage); native code only! ...
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nsIXULTemplateQueryProcessor
ultemplatequeryprocessor.idlscriptable a query processor takes a template query and generates results for it given a datasource and a reference point. there is a one-to-one relationship between a template builder and a query processor. the template builder creates the query processor, and there is no other means to retrieve it. 1.0 66 introduced gecko 1.9 inherits from: nsisupports last changed in gecko 1.9 (firefox 3) a query processor takes a template query and generates results for it given a datasource and a reference point. there is a one-to-one relationship between a template builder and a query processor. the template builder creates the query processor, and there is no other means to retrieve it. a template query is the contents inside a <query> element within...
...re is no other means to retrieve it. a template query is the contents inside a <query> element within the template. the actual syntax is opaque to the template builder and defined by a query processor. the query is expected to consist of either text or dom nodes that, when executed by a call to the generateresults() method, will allow the generation of a list of results. the template builder will supply two variables, the reference variable and the member variable to further indicate what part of the datasource is to be examined in addition to the query itself. the reference is always a placeholder for the starting point and the member is always a placeholder for the end points (the results). the reference point is important when generating output recursively, as the query will be the same fo...
...compilequery() for each query in the template to compile the queries. when results need to be generated, the builder will call generateresults(). the initializeforbuilding(), compilequery() and addbinding() methods may not be called after generateresults() has been called until the builder indicates that the generated output is being removed by calling the done() method. currently, the datasource supplied to the methods will always be an nsirdfdatasource or a dom node, and will always be the same one in between calls to initializeforbuilding() and done(). method overview void addbinding(in nsidomnode arulenode, in nsiatom avar, in nsiatom aref, in astring aexpr); print32 compareresults(in nsixultemplateresult aleft, in nsixultemplateresult aright, in nsiatom avar, in unsigned long asorth...
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AudioParam.cancelAndHoldAtTime() - Web APIs
ompatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ck out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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characteristic - Web APIs
lity table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetcharacteristic experimentalchrome full support 57notes full support 57notes notes macos only. full support 57notes disabled notes linux and versions of windows earlier than 10.disabled from version 57: this feature is behind the #enable-experimental-web-platform-features preference (needs to be set to enabled). to change...
...port 57notes notes macos only. full support 57notes disabled notes linux and versions of windows earlier than 10.disabled from version 57: this feature is behind the #enable-experimental-web-platform-features preference (needs to be set to enabled). to change preferences in chrome, visit chrome://flags. full support 70notes notes windows 10.edge full support ≤79notes full support ≤79notes notes macos only. ...
...le-experimental-web-platform-features preference (needs to be set to enabled). to change preferences in chrome, visit chrome://flags. full support 70notes notes windows 10.edge full support ≤79notes full support ≤79notes notes macos only. full support ≤79notes disabled notes linux and versions of windows earlier than 10.disabled from version ≤79: this feature is behind the #enable-experimental-web-platform-features preference (needs to be set to enabled). ...
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uuid - Web APIs
compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetuuid experimentalchrome full support 57notes full support 57notes notes macos only. full support 57notes disabled notes linux and versions of windows earlier than 10.disabled from version 57: this feature is behind the #enable-experimental-web-platform-features preference (needs to be set to enabled). to change...
...port 57notes notes macos only. full support 57notes disabled notes linux and versions of windows earlier than 10.disabled from version 57: this feature is behind the #enable-experimental-web-platform-features preference (needs to be set to enabled). to change preferences in chrome, visit chrome://flags. full support 70notes notes windows 10.edge full support ≤79notes full support ≤79notes notes macos only. ...
...le-experimental-web-platform-features preference (needs to be set to enabled). to change preferences in chrome, visit chrome://flags. full support 70notes notes windows 10.edge full support ≤79notes full support ≤79notes notes macos only. full support ≤79notes disabled notes linux and versions of windows earlier than 10.disabled from version ≤79: this feature is behind the #enable-experimental-web-platform-features preference (needs to be set to enabled). ...
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value - Web APIs
compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetvalue experimentalchrome full support 57notes full support 57notes notes macos only. full support 57notes disabled notes linux and versions of windows earlier than 10.disabled from version 57: this feature is behind the #enable-experimental-web-platform-features preference (needs to be set to enabled). to change...
...port 57notes notes macos only. full support 57notes disabled notes linux and versions of windows earlier than 10.disabled from version 57: this feature is behind the #enable-experimental-web-platform-features preference (needs to be set to enabled). to change preferences in chrome, visit chrome://flags. full support 70notes notes windows 10.edge full support ≤79notes full support ≤79notes notes macos only. ...
...le-experimental-web-platform-features preference (needs to be set to enabled). to change preferences in chrome, visit chrome://flags. full support 70notes notes windows 10.edge full support ≤79notes full support ≤79notes notes macos only. full support ≤79notes disabled notes linux and versions of windows earlier than 10.disabled from version ≤79: this feature is behind the #enable-experimental-web-platform-features preference (needs to be set to enabled). ...
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writeValue() - Web APIs
tibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetwritevalue experimentalchrome full support 57notes full support 57notes notes macos only. full support 57notes disabled notes linux and versions of windows earlier than 10.disabled from version 57: this feature is behind the #enable-experimental-web-platform-features preference (needs to be set to enabled). to change...
...port 57notes notes macos only. full support 57notes disabled notes linux and versions of windows earlier than 10.disabled from version 57: this feature is behind the #enable-experimental-web-platform-features preference (needs to be set to enabled). to change preferences in chrome, visit chrome://flags. full support 70notes notes windows 10.edge full support ≤79notes full support ≤79notes notes macos only. ...
...le-experimental-web-platform-features preference (needs to be set to enabled). to change preferences in chrome, visit chrome://flags. full support 70notes notes windows 10.edge full support ≤79notes full support ≤79notes notes macos only. full support ≤79notes disabled notes linux and versions of windows earlier than 10.disabled from version ≤79: this feature is behind the #enable-experimental-web-platform-features preference (needs to be set to enabled). ...
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EventTarget.addEventListener() - Web APIs
addeventlistener() works by adding a function or an object that implements eventlistener to the list of event listeners for the specified event type on the eventtarget on which it's called. ...
...event that has occurred, and it returns nothing. for example, an event handler callback that can be used to handle both fullscreenchange and fullscreenerror might look like this: function eventhandler(event) { if (event.type == 'fullscreenchange') { /* handle a full screen toggle */ } else /* fullscreenerror */ { /* handle a full screen toggle error */ } } safely detecting option support in older versions of the dom specification, the third parameter of addeventlistener() was a boolean value indicating whether or not to use capture. over time, it became clear that more options were needed. rather than adding more parameters to the function (complicating things enormously when dealing with optional values), the third parameter was changed to an object that can contain various...
...tions to configure the process of removing the event listener. because older browsers (as well as some not-too-old browsers) still assume the third parameter is a boolean, you need to build your code to handle this scenario intelligently. you can do this by using feature detection for each of the options you're interested in. ...
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FileSystemFileEntry - Web APIs
ompatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
... like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...bilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetfilesystemfileentrychrome full support 8alternate name full support 8alternate name alternate name uses the non-standard name: fileentryedge full support 79prefixed full support 79prefixed prefixed implemented with the vendor prefix: webkitfirefox full support 50ie no support noopera no support nosafari full support ...
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HTMLImageElement.decoding - Web APIs
lity the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ctured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...https://github.com/mdn/browser-compat-data and send us a pull request. ...
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HTMLImageElement.src - Web APIs
pecifying the url of the desired image. this can be set either within the html itself using the src content attribute, or programmatically by setting the element's src property. if you use the srcset content attribute to provide multiple image options for different display pixel densities, the url specified by the src attribute is used in one of two ways: as a fallback for browsers that don't support srcset. as an equivalent for specifying an image in srcset with the size multiplier 1x; that is, the image specified by src is used on low-density screens (such as typical 72 dpi or 96 dpi displays). additionally, if you use src along with both sizes (or the corresponding sizes content attribute) and srcset in order to choose an image based on the viewport size, the src attribute is only u...
...ing an image in srcset with the size multiplier 1x; that is, the image specified by src is used on low-density screens (such as typical 72 dpi or 96 dpi displays). additionally, if you use src along with both sizes (or the corresponding sizes content attribute) and srcset in order to choose an image based on the viewport size, the src attribute is only used as a fallback for browsers that don't support sizes and srcset; otherwise, it's not used at all. examples specifying a single image html <img src="https://udn.realityripple.com/samples/d6/7ab36d79bb.jpg" width="160" alt="slices of grapefruit, looking yummy."> result using src with an image set when using a set of images with the srcset property, the src serves as either a fallback for older browsers, or as the 1x size...
...th an image set when using a set of images with the srcset property, the src serves as either a fallback for older browsers, or as the 1x size of the image. html result specifying a fallback for viewport-based selection when using viewport-bases selection of an image from a srcset by also specifying the sizes property, the src property serves as the fallback to be used on browsers that don't support viewport-based selection. browsers that do support viewport-based selection will ignore src in this situation. html result specifications specification status comment html living standardthe definition of 'htmlimageelement.src' in that specification. living standard browser compatibility the compatibility table on this page is generated from stru...
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IDBDatabase.transaction() - Web APIs
transaction unless you actually need to write into the database. if you need to open the object store in readwrite mode to change data, you would use the following: var transaction = db.transaction('my-store-name', "readwrite"); as of firefox 40, indexeddb transactions have relaxed durability guarantees to increase performance (see bug 1112702), which is the same behaviour as other indexeddb-supporting browsers. previously in a readwrite transaction idbtransaction.oncomplete was fired only when all data was guaranteed to have been flushed to disk. in firefox 40+ the complete event is fired after the os has been told to write the data but potentially before that data has actually been flushed to disk. the complete event may thus be delivered quicker than before, however, there exists a sm...
...nnot be recomputed later) you can force a transaction to flush to disk before delivering the complete event by creating a transaction using the experimental (non-standard) readwriteflush mode (see idbdatabase.transaction.) this is currently experimental, and can only be used if the dom.indexeddb.experimental pref is set to true in about:config. details optional dictionary of other settings, supported only by chrome: return value an idbtransaction object. exceptions this method may raise a domexception of one of the following types: exception description invalidstateerror the close() method has previously been called on this idbdatabase instance. notfounderror an object store specified in in the storenames parameter has been deleted ...
... the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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ImageCapture.takePhoto() - Web APIs
bpromise = imagecaptureobj.takephoto([photosettings]) parameters photosettings optional an object that sets options for the photo to be taken. the available options are: filllightmode: the flash setting of the capture device, one of "auto", "off", or "flash". imageheight: the desired image height as an integer. the user agent selects the closest height value to this setting if it only supports discrete heights. imagewidth: the desired image width as an integer. the user agent selects the closest width value to this setting if it only supports discrete widths. redeyereduction: a boolean indicating whether the red-eye reduction should be used if it is available. return value a promise that resolves with a blob. example this example is extracted from this simple image ca...
...atibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...a. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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Key Values - Web APIs
0xff7f) qt::key_numlock (0x01000025) keycode_num_lock (143) "scrolllock" [2] the scroll lock key. toggles between scrolling and cursor movement modes. vk_scroll (0x91) gdk_key_scroll_lock (0xff14) qt::key_scrolllock (0x01000026) keycode_scroll_lock (116) "shift" the shift key. ...
...ft key. modifies keystrokes to allow typing upper (or other) case letters, and to support typing punctuation and other special characters. vk_shift (0x10) vk_lshift (0xa0) vk_rshift (0xa1) kvk_shift (0x38) kvk_rightshift (0x3c) gdk_key_shift_l (0xffe1) gdk_key_shift_r (0xffe2) qt::key_shift (0x01000020) keycode_shift_left (59) keycode_shift_right (60) "super" [4] the super key. gdk_key_super_l (0xffeb) gdk_key_super_r (0xffec) qt::key_super_l (0x01000053) qt::key_super_r (0x01000054) "symbol" the symbol modifier key (found on certain virtual keyboards). keycode_sym (63) [3] "symbollock" the symbol lock key. [1] in internet explorer (tested on release 9 and 1...
...63) [3] "symbollock" the symbol lock key. [1] in internet explorer (tested on release 9 and 11), as well as in all versions of firefox, the windows key is reported as "os" instead of as "meta". this will be changed in firefox per bug 1232918. until that's fixed, these keys are returned as "os" by firefox: vk_lwin (0x5b) and vk_rwin (0x5c) on windows, and gdk_key_super_l (0xffeb), gdk_key_super_r (0xffec), gdk_key_hyper_l (0xffed), and gdk_key_hyper_r (0xffee) on linux. [2] internet explorer (tested on release 9 and 11) reports "scroll" instead of "scrolllock" for the scroll lock key. [3] firefox did not add support for the symbol key until firefox 37. [4] firefox generates the key value "os" for the super and hyper keys, instead of "super" and "hyper". [...
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PaymentAddress.toJSON() - Web APIs
ity the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...d data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
... for androidopera for androidsafari on iossamsung internettojson()chrome full support 61disabled full support 61disabled disabled from version 61: this feature is behind the #web-payments preference (needs to be set to enabled). to change preferences in chrome, visit chrome://flags.edge full support 15firefox full support 62notes disabled full support 62notes disabled notes available only in nightly builds. ...
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PaymentRequest.prototype.id - Web APIs
the id read-only attribute of the paymentrequest interface returns a unique identifier for a particular paymentrequest instance. when constructing an instance of the paymentrequest, you are able to supply an custom id via paymentdetailsinit dictionary's id member. if none is provided, the browser automatically sets the id value to a uuid. example this example shows how to give a paymentrequest instance a custom id. ...
...interface returns a unique identifier for a particular paymentrequest instance. when constructing an instance of the paymentrequest, you are able to supply an custom id via paymentdetailsinit dictionary's id member. if none is provided, the browser automatically sets the id value to a uuid. example this example shows how to give a paymentrequest instance a custom id. const details = { id: "super-store-order-123-12312", total: { label: "total due", amount: { currency: "usd", value: "65.00" }, }, }; const request = new paymentrequest(methoddata, details); console.log(request.id); // super-store-order-123-12312 the id is then also available in the paymentresponse returned from the show() method, but under the requestid attribute. const response = await request.show(); conso...
...atibility the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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PerformanceLongTaskTiming - Web APIs
on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...er-compat-data and send us a pull request. ...
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SVGTransformList - Web APIs
e compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ta. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ithub.com/mdn/browser-compat-data and send us a pull request. ...
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:visited - CSS: Cascading Style Sheets
lity the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...uctured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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:where() - CSS: Cascading Style Sheets
ity the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...d data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...idsafari on iossamsung internet:where()chrome full support 72disabled full support 72disabled disabled from version 72: this feature is behind the #enable-experimental-web-platform-features preference (needs to be set to enabled). ...
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<input type="date"> - HTML: Hypertext Markup Language
<input> elements of type="date" create input fields that let the user enter a date, either with a textbox that validates the input or a special date picker interface. the resulting value includes the year, month, and day, but not the time. the time and datetime-local input types support time and date+time input. the source for this interactive example is stored in a github repository. if you'd like to contribute to the interactive examples project, please clone https://github.com/mdn/interactive-examples and send us a pull request. the input ui generally varies from browser to browser; see browser compatibility for further details. in unsupported browsers, the control degrades gracefully to <input type="text">. among browsers with custom interfaces for selecting dates are chrome and op...
...ted browsers, the control degrades gracefully to <input type="text">. among browsers with custom interfaces for selecting dates are chrome and opera, whose data control looks like so: the edge date control looks like: and the firefox date control looks like this: value a domstring representing a date in yyyy-mm-dd format, or empty events change and input supported common attributes autocomplete, list, readonly, and step idl attributes list, value, valueasdate, valueasnumber. methods select(), stepdown(), stepup() value a domstring representing the date entered in the input. the date is formatted according to iso8601, described in format of a valid date string in date and time formats used in html. you can set a def...
...ue of step is 1, indicating 1 day. specifying any as the value for step has the same effect as 1 for date inputs. using date inputs date inputs sound convenient — they provide an easy interface for choosing dates, and they normalize the data format sent to the server regardless of the user's locale. however, there are currently issues with <input type="date"> because of its limited browser support. in this section, we'll look at basic and then more complex uses of <input type="date">, and offer advice on mitigating the browser support issue later (see handling browser support). hopefully, over time browser support will become ubiquitous, and this problem will fade away. basic uses of date the simplest use of <input type="date"> involves one <input> combined with its <label>, as s...
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Public class fields - JavaScript
see the compat information below. both static and instance public fields are writable, enumerable, and configurable properties. as such, unlike their private counterparts, they participate in prototype inheritance. ...
...ld' } class subclasswithstaticfield extends classwithstaticfield { static substaticfield = 'sub class field' } console.log(subclasswithstaticfield.substaticfield) // expected output: "sub class field" console.log(subclasswithstaticfield.basestaticfield) // expected output: "base field" when initializing fields, this refers to the class constructor. ...
...lasswithstaticfield extends classwithstaticfield { static substaticfield = 'sub class field' } console.log(subclasswithstaticfield.substaticfield) // expected output: "sub class field" console.log(subclasswithstaticfield.basestaticfield) // expected output: "base field" when initializing fields, this refers to the class constructor. ...
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Using the W3C DOM - Archive of obsolete content
lections of elements, such as document.images and document.forms. some browsers have non-standard properties, such as internet explorer's document.all[], that are not part of the w3c document object model (dom) standards and may cause javascript errors in standards-compliant browsers. the w3c document object model provides interfaces dom elements to scriptable objects. ...
...owsers have non-standard properties, such as internet explorer's document.all[], that are not part of the w3c document object model (dom) standards and may cause javascript errors in standards-compliant browsers. the w3c document object model provides interfaces dom elements to scriptable objects. w3c dom standards are well supported by modern browsers, however the standards are moving target so support for newer features should be tested before use. ...
...se javascript errors in standards-compliant browsers. the w3c document object model provides interfaces dom elements to scriptable objects. w3c dom standards are well supported by modern browsers, however the standards are moving target so support for newer features should be tested before use. using w3c standards means that code will run in compliant browsers with minimal need for cross-browser support, whereas code based on proprietary standards requires much more effort to be compatible with multiple user agents. ...
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Using the Right Markup to Invoke Plugins - Archive of obsolete content
url referenced by the codebase attribute and retrieve the activex control. additional param elements (which are "children" of the above object element) specify configuration parameters for the flash plugin. for instance, the param name="movie" tells the flash plugin the location of the swf file to start playing. ...
...lements (which are "children" of the above object element) specify configuration parameters for the flash plugin. for instance, the param name="movie" tells the flash plugin the location of the swf file to start playing. with the release of netscape 7.1, this kind of activex use of the object element is supported for use with the microsoft® windows media player. only the windows media player is supported as an activex control in netscape 7.1. the details are covered in another article. ...
... with the release of netscape 7.1, this kind of activex use of the object element is supported for use with the microsoft® windows media player. only the windows media player is supported as an activex control in netscape 7.1. the details are covered in another article. browsers such as netscape 7 will not render the flash plugin if the above kind of markup is used, because netscape 7 does not support activex or activex-based component invocations, with the exception of windows media player in netscape 7.1. mozilla-based browsers support the netscape plugin architecture, which is not com based like activex (and thus, not invoked via a unique identifier) but rather, mime type based. mozilla-based browsers support the use of the object element along with a mime type. here is an example of th...
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Strategies for carrying out testing - Learn web development
rk out a list of browsers you will need to test on to start with. there is no way you can test on every combination of browser and device your users might use to view your site — there are just too many, and new ones appear all the time. instead, you should try to make sure your site works on the most important target browsers and devices, and then code defensively to give your site the widest support reach it can be expected to have. by coding defensively, we mean trying to build in intelligent fallbacks so that if a feature or style doesn't work in a browser, the site will be able to downgrade to something less exciting that still provides an acceptable user experience — the core information is still accessible, for example, even if it doesn't look quite as nice. the aim is to build ...
...ill be able to downgrade to something less exciting that still provides an acceptable user experience — the core information is still accessible, for example, even if it doesn't look quite as nice. the aim is to build up a chart of browsers/devices you can refer to as you test. you can make this as simple or as complex as you like — for example a common approach is to have multiple grades of support level, something like: a grade: common/modern browsers — known to be capable. test thoroughly and provide full support. b grade: older/less capable browsers — known not to be capable. test, and provide a more basic experience that gives full access to core information and services. c grade: rare/unknown browsers — don't test, but assume they are capable. serve the full site, which ...
... b grade: older/less capable browsers — known not to be capable. test, and provide a more basic experience that gives full access to core information and services. c grade: rare/unknown browsers — don't test, but assume they are capable. serve the full site, which should work, at least with the fallbacks provided by our defensive coding. throughout the following sections, we'll build up a support chart in this format. note: yahoo first made this approach popular, with their graded browser support approach. educated guesses you could call these "assumptions", or "gut feelings". this is not an accurate, scientific approach, but as someone who has experience with the web industry you'll have a pretty good idea of at least some of the browsers you should test. this can form a good ba...
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NSS 3.35 release notes
network security services (nss) 3.35, which is a minor release. distribution information the hg tag is nss_3_35_rtm. nss 3.35 requires nspr 4.18, or newer. nss 3.35 source distributions are available on ftp.mozilla.org for secure https download: source tarballs: https://ftp.mozilla.org/pub/mozilla.org/security/nss/releases/nss_3_35_rtm/src/ new in nss 3.35 new functionality tls 1.3 support has been updated to draft -23. this includes a large number of changes since 3.34, which supported only draft -18. see below for details. new types in sslt.h sslhandshaketype - the type of a tls handshake message. for the sslsignaturescheme enum, the enumerated values ssl_sig_rsa_pss_sha* are deprecated in response to a change in tls 1.3. please use the equivalent ssl_sig_rsa_...
...see below for details. new types in sslt.h sslhandshaketype - the type of a tls handshake message. for the sslsignaturescheme enum, the enumerated values ssl_sig_rsa_pss_sha* are deprecated in response to a change in tls 1.3. please use the equivalent ssl_sig_rsa_pss_rsae_sha* for rsaencryption keys, or ssl_sig_rsa_pss_pss_sha* for pss keys. note that this release does not include support for the latter. notable changes in nss 3.35 previously, nss used the dbm file format by default. starting with version 3.35, nss uses the sql file format by default. below, are explanations that could be helpful for environments that need to adopt to the new default. if nss is initialized, in read-write mode with a database directory provided, it uses database files to store c...
....35 previously, nss used the dbm file format by default. starting with version 3.35, nss uses the sql file format by default. below, are explanations that could be helpful for environments that need to adopt to the new default. if nss is initialized, in read-write mode with a database directory provided, it uses database files to store certificates, key, trust, and other information. nss supports two different database file formats: dbm: the legacy file format, based on berkeley db, using filenames cert8.db, key3.db and secmod.db. parallel database access, by multiple applications, is forbidden as it will likely result in data corruption. sql: the newer file format, based on sqlite, using filenames cert9.db, key4.and and pkcs11.txt. parallel database access, by multipl...
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Introduction to XPCOM for the DOM
the hairy details, if you just intend to read the code or to work with the existing framework. the numerous macros and facilities brought by the dom, as well as nscomptr's, make our life much easier. in this chapter i will attempt to cover the most widespread use of xpcom in the dom, avoiding the details as much as possible. i will introduce nscomptr's, interfaces, reference counting, and the nsisupports interface. a tutorial about how to add a new interface is also provided, and eventually, a more detailed discussion of class inheritance in c++. interfaces object-oriented programming is based on the used of inheritance between classes. furthermore, a class can be de declared to be "abstract" if it declares some methods but does not implement them entirely. pushing this concept to its maxi...
.... let's consider what happens when the class nsfoo implements an interface nsifoo. you can manipulate the nsfoo object directly through fooptr, however your code will not be very robust. indeed, if someone decides to change the name or the signature of the methods you use, you will have to change all the calls to those methods throughout your code. as opposed to a concreate class, an interface is supposed to be more stable through time. indeed, many interfaces in the mozilla code are frozen (this is indicated by the comment @frozen at the beginning of the interface definition). that means that the interface will never change anymore. the good thing is that your code will (in the best condition) last forever. the bad thing is that we have to find a way to improve those interfaces, and freezing...
...ake sure that no object is deleted while interface pointers still point at that object. indeed, dereferencing a pointer that points to a deleted object can have bad consequences. that is why each time a pointer to an interface is assigned the address of an object, we have to increase the reference count of that object by one. the function that does this is called "addref" and is defined in the nsisupports interface. when the pointer no longers holds the address of that object, it has to decrease the reference count of that object by one. this is done using the "release" function, also defined in the nsisupports interface. when the reference count of an object hits 0 (zero), the object deletes itself. this is why it is very important to keep track of the reference count of each object. in the ...
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nsIWebBrowserPersist
ng/browser/nswebbrowser;1 and @mozilla.org/embedding/browser/nswebbrowserpersist;1. ...
...;1. ...
...nce, use: var webbrowserpersist = components.classes["@mozilla.org/embedding/browser/nswebbrowserpersist;1"] .createinstance(components.interfaces.nsiwebbrowserpersist); method overview void cancelsave(); void savechannel(in nsichannel achannel, in nsisupports afile); void savedocument(in nsidomdocument adocument, in nsisupports afile, in nsisupports adatapath, in string aoutputcontenttype, in unsigned long aencodingflags, in unsigned long awrapcolumn); void saveuri(in nsiuri auri, in nsisupports acachekey, in nsiuri areferrer, in long areferrerpolicy, in nsiinputstream apostdata, in string aextraheaders, in nsisupports afile, in nsiloadcontext aprivacycontext); void saveprivacyawareuri(in nsiuri auri, in nsisupports ac...
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Plug-in Basics - Plugins
) note: firefox nightly checks a subset of these locations. also some linux distributions provide a system browser configured differently. advanced: you can determine which directories a gecko program checks with the linux strace command, for example: strace -e open /usr/bin/firefox 2>&1 | grep plugin but with version firefox-41.0.2 we can not check. ...
...ed also this command with above script (with environment variable) on my system and also working. however, primary working path with binary file was /usr/lib/mozilla/plugins for 32-bit and 64-bit linux distributions and looks still working. firefox and opensuse probably use "moz_plugin_path environment variable" in script to run firefox, so in this way /usr/lib64/mozilla/plugins also should be supported. about distributions: example debian 64bit probably use: /lib/x86_64-linux-gnu/ --> for 64 libs /lib/i386-linux-gnu/ --> for 32 libs if exist /lib32/ --> this is symlinked (or bind mounted) desired proper directory /lib64/ --> this is symlinked (or bind mounted) desired proper directory more in https://wiki.debian.org/multiarch/thecaseformultiarch if something wrong, please edit. ...
...i.debian.org/multiarch/thecaseformultiarch if something wrong, please edit. example fedora 64bit use: /lib/ --> for 32 bit libs /lib64/ --> for 64 bit libs plug-ins within toolkit bundles. to find out which plug-ins are currently installed visit about:plugins. gecko displays a page listing all installed plug-ins and the mime types they handle, as well as optional descriptive information supplied by the plug-in. on windows, installed plug-ins are automatically configured to handle the mime types that they support. if multiple plug-ins handle the same mime type, the first plug-in registered handles the mime type. for information about the way mime types are assigned, see registering plug-ins. checking plug-ins by mime type the enabledplugin property in javascript can be used to det...
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BudgetService - Web APIs
ge is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
... to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetbudgetservice experimentaldeprecatednon-standardchrome full support 55edge full support ≤79firefox ? ie ? opera full support 42safari ? webview android full support 55chrome android full support 55firefox android ? opera android full support 42safari ios ? samsung i...
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BudgetState - Web APIs
page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...te to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...t exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetbudgetstate experimentaldeprecatednon-standardchrome full support 60edge full support ≤79firefox ? ie ? opera no support nosafari ? webview android no support nochrome android full support 60firefox android ? opera android no support nosafari ios ? samsung inter...
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ConvolverNode() - Web APIs
ntaining the (possibly multichannel) impulse response used by the convolvernode to create the reverb effect. disablenormalization: a boolean controlling whether the impulse response from the buffer will be scaled by an equal-power normalization, or not. the default is 'false'. return value a new convolvernode object instance. exceptions exception explanation notsupportederror the referenced audiobuffer does not have the correct number of channels, or it has a different sample rate to the associated audiocontext. specifications specification status comment web audio apithe definition of 'convolvernode()' in that specification. working draft initial definition. browser compatibility the compatibility table on ...
...lity table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...'d like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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FileSystemDirectoryReader.readEntries() - Web APIs
ble on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...k out https://github.com/mdn/browser-compat-data and send us a pull request. ...
... pull request. ...
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FileSystemSync - Web APIs
lity table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ke to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...pmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetfilesystemsync non-standardchrome full support 13prefixed full support 13prefixed prefixed implemented with the vendor prefix: webkitedge full support ≤79prefixed full support ≤79prefixed prefixed implemented with the vendor prefix: webkitfirefox no support noie no support noopera full support 15prefixed full supp...
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HTMLIFrameElement.allowPaymentRequest - Web APIs
table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
... contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...droidsafari on iossamsung internetallowpaymentrequest experimentalchrome full support 60disabled full support 60disabled disabled from version 60: this feature is behind the #web-payments preference (needs to be set to enabled). ...
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IDBCursor.request - Web APIs
ity the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ctured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ut https://github.com/mdn/browser-compat-data and send us a pull request. ...
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IDBDatabase.createObjectStore() - Web APIs
keypath is either an empty string or an array containing an empty string. example // let us open our database var request = window.indexeddb.open("todolist", 4); // this handler is called when a new version of the database // is created, either when one has not been created before // or when a new version number is submitted by calling // window.indexeddb.open(). // this handler is only supported in recent browsers. request.onupgradeneeded = function(event) { var db = event.target.result; db.onerror = function(event) { note.innerhtml += "<li>error loading database.</li>"; }; // create an objectstore for this database var objectstore = db.createobjectstore("todolist", { keypath: "tasktitle" }); // define what data items the objectstore will contain objectstore.
... compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...d data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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IDBKeyRange.includes() - Web APIs
g whether a specified key is inside the key range. note: this feature is available in web workers. syntax var isincluded = mykeyrange.includes(key) parameters key the key you want to check for in your key range. this can be any type. return value a boolean. ...
... description dataerror the supplied key was not a valid key. example var keyrangevalue = idbkeyrange.bound('a', 'k', false, false); var myresult = keyrangevalue.includes('f'); // returns true var myresult = keyrangevalue.includes('w'); // returns false polyfill the includes() method was added in the second edition of the indexed db specification. for browsers that do not support it, the following polyfill can be used. idbkeyrange.prototype.includes = idbkeyrange.prototype.includes || function(key) { var r = this, c; if (r.lower !== undefined) { c = indexeddb.cmp(key, r.lower); if (r.loweropen && c <= 0) return false; if (!r.loweropen && c < 0) return false; } if (r.upper !== undefined) { c = indexeddb.cmp(key, r.upper); if (r.upperopen &&...
...ity the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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IDBTransaction.oncomplete - Web APIs
previously in a readwrite transaction idbtransaction.oncomplete was fired only when all data was guaranteed to have been flushed to disk. ...
...y the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ructured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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IDBVersionChangeEvent.version - Web APIs
syntax readonly attribute unsigned long long? version; value a 64-bit integer. ...
...y table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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PaymentRequest.abort() - Web APIs
the paymentrequest.abort() method of the paymentrequest interface causes the user agent to end the payment request and to remove any user interface that might be shown. syntax paymentrequest.abort(); returns void. parameters none examples the following example sets up a timeout to clear the payment request that might have been abandoned or neglected. ...
...lity the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...uctured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetabort()chrome full support 61edge full support 15firefox full support 55notes disabled full support 55notes disabled notes available only in nightly builds.disabled from version 55: this feature is behind the dom.payments.request.enabled preference (needs to be set to true). to change preferences in firefox, visit about:...
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PaymentRequest.onshippingaddresschange - Web APIs
d by the user agent changes at any time during a payment process, the event is triggered. to make sure an updated address is included when sending payment information to the server, you should add event listeners for a paymentrequest object after instantiation, but before the call to show(). // initialization of paymentrequest arguments are excerpted for clarity. var payment = new paymentrequest(supportedinstruments, details, options); request.addeventlistener('shippingaddresschange', function(evt) { evt.updatewith(new promise(function(resolve) { updatedetails(details, request.shippingaddress, resolve); })); }); payment.show().then(function(paymentresponse) { // processing of paymentresponse exerpted for the same of clarity. }).catch(function(err) { console.error("uh oh, someth...
...tibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
... you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetonshippingaddresschangechrome full support 61edge full support 15firefox full support 55notes disabled full support 55notes disabled notes available only in nightly builds.disabled from version 55: this feature is behind the dom.payments.request.enabled preference (needs to be set to true). to change preferences in firefox, visit about:...
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PaymentResponse.complete() - Web APIs
pending. you can't treat a payment as complete after requesting that the payment be tried again. examples the following example sends payment information to a secure server using the fetch api. it calls complete() with an answer appropriate to the status in the response. // initialization of paymentrequest arguments are excerpted for the // sake of brevity. ...
...y the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetcomplete()chrome full support 61edge full support 15firefox full support 56notes disabled full support 56notes disabled notes available only in nightly builds.disabled from version 56: this feature is behind the dom.payments.request.enabled preference (needs to be set to true). to change preferences in firefox, visit about:...
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PaymentResponse.payerEmail - Web APIs
this option is only present when the requestpayeremail option is set to true in the paymentoptions object passed to the paymentrequest constructor. syntax var payeremail = paymentresponse.payeremail; specifications specification status comment payment request api candidate recommendation initial definition. browser compatibility the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...y the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetpayeremailchrome full support 61edge full support 15firefox full support 56notes disabled full support 56notes disabled notes available only in nightly builds.disabled from version 56: this feature is behind the dom.payments.request.enabled preference (needs to be set to true). to change preferences in firefox, visit about:...
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PaymentRequest.payerName - Web APIs
this option is only present when the requestpayername option is set to true in the options parameter of the paymentrequest() constructor. syntax var payername = paymentresponse.payername; value a string containing the payer name. specifications specification status comment payment request apithe definition of 'payername' in that specification. candidate recommendation initial definition. browser compatibility the compatibility table on this page is generated from structured data. ...
...ty the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...tured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetpayernamechrome full support 61edge full support 15firefox full support 56notes disabled full support 56notes disabled notes available only in nightly builds.disabled from version 56: this feature is behind the dom.payments.request.enabled preference (needs to be set to true). to change preferences in firefox, visit about:...
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PaymentResponse.requestId - Web APIs
syntax var id = paymentrequest.id value a domstring. specifications specification status comment payment request apithe definition of 'requestid' in that specification. candidate recommendation initial definition. browser compatibility the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ty the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...tured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetrequestidchrome full support 61edge full support 16firefox full support 56notes disabled full support 56notes disabled notes available only in nightly builds.disabled from version 56: this feature is behind the dom.payments.request.enabled preference (needs to be set to true). to change preferences in firefox, visit about:...
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PaymentResponse.shippingAddress - Web APIs
calling the paymentrequest constructor. in the example below, the cost of shipping varies by geography. when the paymentrequest.onshippingaddresschange is called, updatedetails() is called to update the details of the paymentrequest, using shippingaddress to set the correct shipping cost. // initialization of paymentrequest arguments are excerpted for brevity. var payment = new paymentrequest(supportedinstruments, details, options); request.addeventlistener('shippingaddresschange', function(evt) { evt.updatewith(new promise(function(resolve) { updatedetails(details, request.shippingaddress, resolve); })); }); payment.show().then(function(paymentresponse) { // processing of paymentresponse exerpted for the same of brevity. }).catch(function(err) { console.error("uh oh, someth...
...he compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetshippingaddresschrome full support 61edge full support 15firefox full support 56notes disabled full support 56notes disabled notes available only in nightly builds.disabled from version 56: this feature is behind the dom.payments.request.enabled preference (needs to be set to true). to change preferences in firefox, visit about:...
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PaymentResponse.shippingOption - Web APIs
s object passed to the paymentrequest constructor. syntax var shippingoption = paymentrequest.shippingoption; example in the example below, the paymentrequest.onshippingaoptionchange event is called. it calls updatedetails() to toggle the shipping method between "standard" and "express". // initialization of paymentrequest arguments are excerpted for brevity. var payment = new paymentrequest(supportedinstruments, details, options); request.addeventlistener('shippingoptionchange', function(evt) { evt.updatewith(new promise(function(resolve, reject) { updatedetails(details, request.shippingoption, resolve, reject); })); }); payment.show().then(function(paymentresponse) { // processing of paymentresponse exerpted for the same of brevity. }).catch(function(err) { console.error(...
...the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
... data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetshippingoptionchrome full support 61edge full support 15firefox full support 56notes disabled full support 56notes disabled notes available only in nightly builds.disabled from version 56: this feature is behind the dom.payments.request.enabled preference (needs to be set to true). to change preferences in firefox, visit about:...
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Geometry and reference spaces in WebXR - Web APIs
a way to report its position to your app. thus, it has its own coordinate system. this is a reference space which is provided to your app when input events occur. this reference space internally knows how to map the coordinates of the controller to the headset's coordinates, so webxr can translate coordinates back and forth for you. once created, an xrreferencespace guarantees a certain level of support for motion and orientation tracking, and provides a mechanism for obtaining an xrviewerpose from which you can get a matrix which represents the position and facing direction of the space relative to the world space, if the space represents a viewer such as the user's headset, an observer's headset, or a virtual camera. all of this is the browser's responsibility to handle, providing consist...
...om their origin point. the viewer isn't tracked at all; tracking is optimized for stability around the user's current position, so the native origin may drift as needed to accommodate that need. xrreferencespace viewer a tracking space whose native origin tracks the viewer's position and orientation. this is used for environments in which the user can physically move around, and is supported by all instances of xrsession, both immersive and inline, though it's most useful for inline sessions. it's particularly useful when determining the distance between the viewer and an input, or when working with offset spaces. otherwise, typically, one of the other reference space types will be used more often. xrreferencespace the remainder of this guide explores how to select t...
... guide explores how to select the right reference space for your app's needs. defining spatial relationships with reference spaces there are a number of commonly used ways to reference the positions and orientations of objects relative to their environment, as well as to constrain the environment itself. to that end, webxr defines a set of standard spaces, called reference spaces, each of which supports a different technique for correlating its local space's reference frame coordinate system to the coordinate system of the space in which it exists. however, regardless of which type of reference space is being used, you can use the same functions to convert coordinates from space to parent space. selecting the reference space type straight off, let's state the simplest step in the process...
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Window.releaseEvents() - Web APIs
e in this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
... contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...wser-compat-data and send us a pull request. ...
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Window.scrollBy() - Web APIs
lity the compatibility table in this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...uctured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
... check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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XRSystem: requestSession() - Web APIs
resolves to an xrsession object through which you can manage the requested type of webxr session. while only one immersive vr session can be active at a time, multiple inline sessions can be in progress at once. syntax var sessionpromise = xr.requestsession(sessionmode, sessioninit) parameters sessionmode a domstring whose value is one of those included in the xrsessionmode enum. the supported modes are: immersive-ar the session's output will be given exclusive access to the immersive device, but the rendered content will be blended with the real-world environment. the session's environmentblendmode indicates the method to be used to blend the content together. important: the immersive-ar mode is defined by the webxr augmented reality module, which is not yet stable a...
...e if the hardware requires it. inline the output is presented inline within the context of an element in a standard html document, rather than occupying the full visual space. inline sessions can be presented in either mono or stereo mode, and may or may not have viewer tracking available. inline sessions don't require special hardware and should be avalable on any user agent offering webxr api support. sessioninit optional a xrsessioninit object providing options to configure the new xrsession. see specifying session options for details on how to configure a webxr session. return value a promise that resolves with an xrsession object if the device and user agent support the requested mode and features. exceptions this method doesn't throw true exceptions; instead, it rejects the re...
...atures. exceptions this method doesn't throw true exceptions; instead, it rejects the returned promise, passing into it a domexception whose name is one of the following: invalidstateerror the requested session mode is immersive-vr but there is already an immersive vr session either currently active or in the process of being set up. there can only be one immersive vr session at a time. notsupportederror there is no webxr-compatible device available, or the device does not support the specified sessionmode; this can also be thrown if any of the required options are unsupported. securityerror permission to enter the specified xr mode is denied. this can happen for a number of reasons, which are covered in more detail in permissions and security in webxr device api. examples cr...
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::slotted() - CSS: Cascading Style Sheets
ersonal id card</h2> <slot name="person-name">name missing</slot> <ul> <li><slot name="person-age">age missing</slot></li> <li><slot name="person-occupation">occupation missing</slot></li> </ul> </div> </template> a custom element — <person-details> — is defined like so: customelements.define('person-details', class extends htmlelement { constructor() { super(); let template = document.getelementbyid('person-template'); let templatecontent = template.content; const shadowroot = this.attachshadow({mode: 'open'}); let style = document.createelement('style'); style.textcontent = 'div { padding: 10px; border: 1px solid gray; width: 200px; margin: 10px; }' + 'h2 { margin: 0 0 10px; }' + ...
...tyle element with content, we select all slotted elements (::slotted(*)) and give them a different font and color. this allows them to stand out better next to the slots that haven't been successfully filled. the element looks like this when inserted into the page: <person-details> <p slot="person-name">dr. shazaam</p> <span slot="person-age">immortal</span> <span slot="person-occupation">superhero</span> </person-details> specifications specification status comment css scoping module level 1the definition of '::slotted' in that specification. working draft initial definition. browser compatibility the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.
...ity the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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Variable fonts guide - CSS: Cascading Style Sheets
access all the variations contained in a given font file via css and a single @font-face reference. this article will give you all you need to know to get you started using variable fonts. warning: in order to use variable fonts on your operating system, you need to make sure that it is up to date. for example linux oses need the latest linux freetype version, and macos prior to 10.13 does not support variable fonts. if your operating system is not up to date, you will not be able to use variable fonts in web pages or the firefox developer tools. variable fonts: what they are, and how they differ to better understand what's different about variable fonts, it is worth reviewing what non-variable ones are like and how they compare. standard (or static) fonts in the past, a typeface woul...
...n the code examples below. registered axes and existing css attributes in this section we'll demonstrate the five registered axes defined with examples and the corresponding css. where possible, both the standard and lower-level syntax are included. the lower-level syntax (font-variation-settings) was the first mechanism implemented in order to test the early implementations of variable font support, and is necessary to utilize new or custom axes beyond the five registered ones. however, the w3c’s intent was for this syntax not to be used when other attributes are available. therefore wherever possible, the appropriate property should be used, with the lower-level syntax of font-variation-settings only being used to set values or axes not available otherwise. notes when using fo...
...n axis of how narrow or wide (condensed or extended, in typographic terms) the letterforms can be. this is typically set in css using the font-stretch property, with values expressed as a percentage above or below ‘normal’ (100%), any number greater than 0 is technically valid—though it is far more likely that the range would fall closer to the 100% mark, such as 75%-125%. if a number value supplied is outside the range encoded in the font, the browser should render the font at the closest value allowed. note: the % symbol is not used when utilizing font-variation-settings. font-stretch: 115%; font-variation-settings: 'wdth' 115; the following live example's css can be edited to allow you to play with font width values. italic the italic (ital) axis works differently in that ...
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background-position - CSS: Cascading Style Sheets
rent.gif"), url("https://mdn.mozillademos.org/files/7693/catfront.png"); background-position: 0px 0px, right 3em bottom 2em; } result specifications specification status comment css backgrounds and borders module level 3the definition of 'background-position' in that specification. candidate recommendation adds support for multiple backgrounds and the four-value syntax. modifies the percentage definition to match implementations. css level 2 (revision 1)the definition of 'background-position' in that specification. recommendation allows for keyword values and <length> and <percentage> values to be mixed. css level 1the definition of 'background-position' in that specification. rec...
...ompatibility table in this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...a. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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caption-side - CSS: Cascading Style Sheets
the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...red data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...https://github.com/mdn/browser-compat-data and send us a pull request. ...
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element() - CSS: Cascading Style Sheets
as a background. on gecko browsers, you can use the non-standard document.mozsetimageelement() method to change the element being used as the background for a given css background element. syntax element(id) where: id the id of an element to use as the background, specified using the html attribute #id on the element. examples these examples can be viewed live in builds of firefox that support -moz-element(). a somewhat realistic example this example uses a hidden <div> as a background. the background element uses a gradient, but also includes text that is rendered as part of the background. <div style="width:400px; height:400px; background:-moz-element(#mybackground1) no-repeat;"> <p>this box uses the element with the #mybackground1 id as its background!</p> </div> <div styl...
...mpatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...a. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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object-fit - CSS: Cascading Style Sheets
ty the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...t https://github.com/mdn/browser-compat-data and send us a pull request. desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetobject-fitchrome full support 31edge full support 16notes full support 16notes notes edge supports object-fit on img elements only. ...
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object-position - CSS: Cascading Style Sheets
he compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...s://github.com/mdn/browser-compat-data and send us a pull request. ...
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pointer-events - CSS: Cascading Style Sheets
the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...d data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...tps://github.com/mdn/browser-compat-data and send us a pull request. ...
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Cross-browser audio basics - Developer guides
here we define an <audio> element with m...
... attributes, properties, and events explained a guide to custom controls created using the media api basic audio example the code below is an example of a basic audio implementation using html5: <audio controls> <source src="audiofile.mp3" type="audio/mpeg"> <source src="audiofile.ogg" type="audio/ogg"> <!-- fallback for non supporting browsers goes here --> <p>your browser does not support html5 audio, but you can still <a href="audiofile.mp3">download the music</a>.</p> </audio> note: you can also use an mp4 file instead of mp3. mp4 files typically contain aac encoded audio. you can use type="audio/mp4". (currently, browsers that support mp3 also support mp4 audio). here we define an <audio> element with multiple sources — we do this as not all browsers support th...
... formats that will give maximum coverage are mp3 and ogg vorbis. we do this using the <source> element, which takes the attributes src and type. src contains the path to the audio file to be loaded (relative or absolute). type is used to inform the browser of the file type. if omitted, most browsers will attempt to guess this from the file extension. if the <audio> element is not supported then <audio> and <source> will be ignored. however any supported text or elements that you define within <audio> will be displayed or acted upon. so the ideal place to create a fallback or inform of incompatibility is before the closing </audio> tag. in this case, we've provided a simple paragraph including a link to download the audio directly. the controls attribute on the <audio> elemen...
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<input type="week"> - HTML: Hypertext Markup Language
easy entry of a year plus the iso 8601 week number during that year (i.e., week 1 to 52 or 53). the source for this interactive example is stored in a github repository. if you'd like to contribute to the interactive examples project, please clone https://github.com/mdn/interactive-examples and send us a pull request. the control's user interface varies from browser to browser; cross-browser support is currently a bit limited, with only chrome/opera and microsoft edge supporting it at this time. in non-supporting browsers, the control degrades gracefully to function identically to <input type="text">. in chrome/opera the week control provides slots to fill in week and year values, a pop-up calendar interface to select them more visually, and an "x" button to clear the control's value. ...
...opera the week control provides slots to fill in week and year values, a pop-up calendar interface to select them more visually, and an "x" button to clear the control's value. the edge week control is somewhat more elaborate, opening up week and year pickers with sliding reels. value a domstring representing a week and year, or empty events change and input supported common attributes autocomplete, list, readonly, and step idl attributes value, valueasdate, valueasnumber, and list. methods select(), stepdown(), and stepup() value a domstring representing the value of the week/year entered into the input. the format of the date and time value used by this input type is described in format of a valid week string in date ...
...e of "any" means for step when used with week inputs. this will be updated as soon as that information is determined. using week inputs week inputs sound convenient at first glance, since they provide an easy ui for choosing weeks, and they normalize the data format sent to the server, regardless of the user's browser or locale. however, there are issues with <input type="week"> because browser support is not guaranteed across all browsers. we'll look at basic and more complex uses of <input type="week">, then offer advice on mitigating the browser support issue later on (see handling browser support). basic uses of week the simplest use of <input type="week"> involves a basic <input> and <label> element combination, as seen below: <form> <label for="week">what week would you like to ...
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Browser detection using the user agent - HTTP
s uncommon, it's worth checking if this bug has been reported to the browser vendor via their bug tracking system (mozilla; webkit; blink; opera). browser makers do pay attention to bug reports, and the analysis may hint about other workarounds for the bug. are you trying to check for the existence of a specific feature? your site needs to use a specific web feature that some browsers don't yet support, and you want to send those users to an older web site with fewer features but that you know will work. this is the worst reason to use user agent detection because odds are eventually all the other browsers will catch up. in addition, it is not practical to test every one of the less popular browsers and test for them. you should never do user agent sniffing. there is always the alternative ...
...f the specific feature you need is available. if it's not, you use a fallback. in those rare cases where behavior differs between browsers, instead of checking the user agent string, you should instead implement a test to detect how the browser implements the api and determine how to use it from that. an example of feature detection is as follows. ...
... not, you use a fallback. in those rare cases where behavior differs between browsers, instead of checking the user agent string, you should instead implement a test to detect how the browser implements the api and determine how to use it from that. an example of feature detection is as follows. in 2017, chrome unflagged experimental lookbehind support in regular expressions, but no other browser supported it. ...
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Details of the object model - JavaScript
isting prototype-based inheritance. the class syntax does not introduce a new object-oriented inheritance model to javascript. subclasses and inheritance in a class-based language, you create a hierarchy of classes through the class definitions. in a class definition, you can specify that the new class is a subclass of an already existing class. the subclass inherits all the properties of the superclass and additionally can add new properties or modify the inherited ones. for example, assume the employee class includes only the name and dept properties, and manager is a subclass of employee that adds the reports property. in this case, an instance of the manager class would have all three properties: name, dept, and reports. javascript implements inheritance by allowing you to associate ...
...; } the manager and workerbee definitions show the difference in how to specify the next object higher in the inheritance chain. in javascript, you add a prototypical instance as the value of the prototype property of the constructor function, then override the prototype.constructor to the constructor function. you can do so at any time after you define the constructor. in java, you specify the superclass within the class definition. you cannot change the superclass outside the class definition. javascript function manager() { employee.call(this); this.reports = []; } manager.prototype = object.create(employee.prototype); manager.prototype.constructor = manager; function workerbee() { employee.call(this); this.projects = []; } workerbee.prototype = object.create(employee.prototyp...
...fred.name is '' // fred.dept is 'sales' // fred.projects is [] // fred.quota is 100 var jane = new engineer; // jane.name is '' // jane.dept is 'engineering' // jane.projects is [] // jane.machine is '' object properties this section discusses how objects inherit properties from other objects in the prototype chain and what happens when you add a property at run time. inheriting properties suppose you create the mark object as a workerbee with the following statement: var mark = new workerbee; when javascript sees the new operator, it creates a new generic object and implicitly sets the value of the internal property [[prototype]] to the value of workerbee.prototype and passes this new object as the value of the this keyword to the workerbee constructor function. the internal [[prot...
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WebAssembly.CompileError() constructor - JavaScript
n this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ontribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...er-compat-data and send us a pull request. ...
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WebAssembly.Instance() constructor - JavaScript
le on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...rowser-compat-data and send us a pull request. ...
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WebAssembly.Instance.prototype.exports - JavaScript
mpatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
... if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ithub.com/mdn/browser-compat-data and send us a pull request. ...
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WebAssembly.LinkError() constructor - JavaScript
e on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...o contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...owser-compat-data and send us a pull request. ...
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WebAssembly.Memory.prototype.buffer - JavaScript
ompatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
.... if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...github.com/mdn/browser-compat-data and send us a pull request. ...
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WebAssembly.Memory.prototype.grow() - JavaScript
compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ta. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...//github.com/mdn/browser-compat-data and send us a pull request. ...
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WebAssembly.Module() constructor - JavaScript
able on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...e to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
.../browser-compat-data and send us a pull request. ...
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WebAssembly.Module.customSections() - JavaScript
lity table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...'d like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...om/mdn/browser-compat-data and send us a pull request. ...
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WebAssembly.Module.exports() - JavaScript
mpatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
... if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ithub.com/mdn/browser-compat-data and send us a pull request. ...
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WebAssembly.Module.imports() - JavaScript
mpatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
... if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ithub.com/mdn/browser-compat-data and send us a pull request. ...
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WebAssembly.RuntimeError() constructor - JavaScript
n this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ontribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...er-compat-data and send us a pull request. ...
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WebAssembly.Table() constructor - JavaScript
table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ke to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...n/browser-compat-data and send us a pull request. ...
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WebAssembly.Table.prototype.get() - JavaScript
e compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ata. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...://github.com/mdn/browser-compat-data and send us a pull request. ...
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WebAssembly.Table.prototype.grow() - JavaScript
compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ta. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...//github.com/mdn/browser-compat-data and send us a pull request. ...
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WebAssembly.Table.prototype.length - JavaScript
ompatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
.... if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...github.com/mdn/browser-compat-data and send us a pull request. ...
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WebAssembly.Table.prototype.set() - JavaScript
e compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ata. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...://github.com/mdn/browser-compat-data and send us a pull request. ...
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WebAssembly.compile() - JavaScript
mpatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
... if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ithub.com/mdn/browser-compat-data and send us a pull request. ...
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WebAssembly.instantiate() - JavaScript
ibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...b.com/mdn/browser-compat-data and send us a pull request. ...
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WebAssembly.validate() - JavaScript
patibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...thub.com/mdn/browser-compat-data and send us a pull request. ...
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<math> - MathML
re: display (which has the same effect as display="block") and inline. overflow specifies how an expression behaves if it is too long to fit in the allowed width. possible values are: linebreak (default), scroll, elide, truncate, scale. ...
... and inline. overflow specifies how an expression behaves if it is too long to fit in the allowed width. possible values are: linebreak (default), scroll, elide, truncate, scale. ...
...how an expression behaves if it is too long to fit in the allowed width. possible values are: linebreak (default), scroll, elide, truncate, scale. ...
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Complete - Archive of obsolete content
other pages. this page is for readers who have followed the custom toolbar button tutorial for firefox, thunderbird and sunbird, or the custom toolbar button:seamonkey tutorial for seamonkey, and who want to learn more about developing extensions. introduction you can use the custom toolbar button tutorial as a very simple introduction to extensions. however, because it is so simple it does not support some of the usual features of extensions. this page describes how to structure the extension in a more conventional way. this page is not a step-by-step tutorial. instead it explains the missing features, and outlines how to add them. if you want to see these techniques in action, then you can download and install the complete allcustom extension: allcustom.xpi (the link is external only bec...
...eatures of extensions. this page describes how to structure the extension in a more conventional way. this page is not a step-by-step tutorial. instead it explains the missing features, and outlines how to add them. if you want to see these techniques in action, then you can download and install the complete allcustom extension: allcustom.xpi (the link is external only because this wiki does not support xpi files.) the extension does not contain any useful functions. it is just an extended code sample. to see the code, use a jar tool or zip tool to unpack the xpi file that you downloaded. for more information about developing extensions, see the main extensions page here. features of this extension this extension is a more complex version of the original custom toolbar button extension. it p...
...s. it is just an extended code sample. to see the code, use a jar tool or zip tool to unpack the xpi file that you downloaded. for more information about developing extensions, see the main extensions page here. features of this extension this extension is a more complex version of the original custom toolbar button extension. it provides a user interface in two languages (english and french). it supports firefox, thunderbird, sunbird and flock—these are referred to as "firefox etc." in the rest of this page. it also supports seamonkey. in seamonkey it supports two themes (classic and modern). it provides all five custom toolbar buttons on all the toolbars, and it provides corresponding menu choices in seamonkey's chatzilla window. the following sections describe this extension's overall st...
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Archived Mozilla and build documentation - Archive of obsolete content
if you are a plug-in author, you may find this project saves you a lot of work! ant script to assemble an extension this ant script helps to package an extension archived spidermonkey docs this section contains old spidermonkey documentation. ...
...at can be dragged around and dropped onto other objects. dtrace dtrace is sun microsystem's dynamic tracing framework that allows developers to instrument a program with probes that have little to no effect on performance when not in use and very little when active. probe data can be collected with scripts written in d (no, not that one). mozilla dtrace support has been added by the sun dtrace team and can be used on solaris 10 and mac os x 10.5. embedding faq embedding mozilla in a java application using javaxpcom xulrunner ships with the javaxpcom component, which allows java code to interact with xpcom objects. as you will see in this article, working with xpcom objects in java...
... liveconnect. liveconnect gives your extension's javascript code (linked from or contained in xul code) access to 2 objects: java and packages (note that per this thread, although the new documentation for the liveconnect reimplementation states that these globals will be deprecated (in the context of applets), "firefox and the java plug-in will continue to support the global java/packages keywords, in particular in the context of firefox extensions."). these 2 objects let you make use of the standard jdk classes, e.g., javascript crypto mozilla defines a special javascript object to allow web pages access to certain cryptographic-related services. these services are a balance between the functionality web pages need a...
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HTML forms in legacy browsers - Learn web development
y ones. in the mobile world, when neither the browser nor the os can be updated such as on older android phones or iphones, the stock browsers that don't update are also legacy browsers. dealing with this wilderness is part of the job. fortunately, there are a few tricks to know that can help you to solve most of the problems caused by legacy browsers. and html5 <input> types don't fail when not supported: they fall back to type=text. learn about the issues to understand common patterns, it helps to read browser documentation. if you are reading this on mdn, you are at the right place to start. just check the support of the elements (or dom interface) you want to use. mdn has compatibility tables available for most elements, properties and apis that can be used in a web page. there are oth...
... the webkit blog and planet webkit aggregate the best articles by webkit core developers. chrome platform status site is also important. as well as the apple web site. ...
...tionality", but building efficient html forms is not a question of design or technology. rather, it's about simplicity, intuitivess, and ease of user interaction. the tutorial, forms usability on ux for the masses, explains it well. graceful degradation is web developer's best friend graceful degradation and progressive enhancement are development patterns that allow you to build great stuff by supporting a wide range of browsers at the same time. when you build something for a modern browser, and you want to be sure it will work, one way or another, on legacy browsers, you are performing graceful degradation. let's see some examples related to html forms. html input types the input types added in html5 are all useable, even in ancient browsers, because the way they degrade is highly pre...
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Implementing QueryInterface
ation::queryinterface( refnsiid aiid, void** ainstanceptr ) { ns_assertion(ainstanceptr, "queryinterface requires a non-null destination!"); // it's a logic error, not a runtime error, to call me without any place to put my answer! // ...but that won't matter when someone calls me wrongly in a non-debug build. ...
...ild. if ( !ainstanceptr ) return ns_error_null_pointer; nsisupports* foundinterface; if ( aiid.equals(nscomtypeinfo<nsix>::getiid()) ) foundinterface = ns_static_cast(nsix*, this); else if ( aiid.equals(nscomtypeinfo<nsiy>::getiid()) ) foundinterface = ns_static_cast(nsiy*, this); // ...as many cases as needed... ...
...; nsisupports* foundinterface; if ( aiid.equals(nscomtypeinfo<nsix>::getiid()) ) foundinterface = ns_static_cast(nsix*, this); else if ( aiid.equals(nscomtypeinfo<nsiy>::getiid()) ) foundinterface = ns_static_cast(nsiy*, this); // ...as many cases as needed... ...
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Observer Notifications
applications application shutdown these are the topics that you can observe on shutdown, in order of appearance. topic description quit-application-requested something has requested that the application be shutdown. you can cancel the shutdown from here by setting asubject.data to true (asubject is the first parameter to your observer, the data value is an nsisupportsprbool). quit-application-granted all observers have agreed to the shutdown. quit-application the application is about to quit. this can be in response to a normal shutdown, or a restart. note: the data value for this notification is either 'shutdown' or 'restart'. profile-change-net-teardown the network connection is going offline at this point. ...
...:purge-domain-data sent after domain-specific history and other information have been purged. the data value is a string form of the domain. browser-lastwindow-close-requested sent when the browser wishes to close the last open browser window. when this is sent, it is possible that other windows may still be open, such as the download manager or preferences. the data value is an nsisupportsprbool. recipients may set this to true to abort the close. browser-lastwindow-close-granted sent when all interested parties have responded to the browser-lastwindow-close-requested notification and none of them requested that the close be aborted. after this is sent and handled, the browser window will close. browser-delayed-startup-finished sent when the browser win...
...s removed from the backward/forward cache. see working with bfcache for information about the bfcache, and inner and outer windows for details about how the window hierarchy works. extensions that cache information about windows may wish to observe this so they can release information when the window is destroyed. the window id can be obtained from subject.queryinterface(components.interfaces.nsisupportspruint64).data outer-window-destroyed nsidomwindow called when an outer window is disconnected from its docshell. see inner and outer windows for details about how the window hierarchy works. extensions that cache information about windows may wish to observe this so they can release information when the window is destroyed. the window id can be obtained from subject.queryint...
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nsIWebSocketListener
netwerk/protocol/websocket/nsiwebsocketlistener.idlscriptable implement this interface to receive websocket traffic events asynchronously after calling nsiwebsocketchannel.asyncopen(). ...
... netwerk/protocol/websocket/nsiwebsocketlistener.idlscriptable implement this interface to receive websocket traffic events asynchronously after calling nsiwebsocketchannel.asyncopen(). ...
...t this interface to receive websocket traffic events asynchronously after calling nsiwebsocketchannel.asyncopen(). ...
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BasicCardResponse.billingAddress - Web APIs
the billingaddress property of the basiccardresponse dictionary contains the billing address of the card used to make the payment. syntax "billingaddress" : paymentaddress value a paymentaddress object representing the billing address of the card. example let's look at a sample payment request: var request = new paymentrequest(supportedinstruments, details, options); // call show() to trigger the browser's payment flow. request.show().then(function(instrumentresponse) { // do something with the response from the ui. console.log(instrumentresponse.details); }) .catch(function(err) { // do something with the error from request.show(). }); once the payment flow has been triggered using paymentrequest.show() and the promise resolves successfully, the paymentresponse object avai...
... the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ctured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetbillingaddresschrome no support noedge no support ≤18 — 79firefox full support 56notes disabled full support 56notes disabled notes available only in nightly builds.disabled from version 56: this feature is behind the dom.payments.request.enabled preference (needs to be set to true). to change preferences in firefox, visit about:config.
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BasicCardResponse.cardNumber - Web APIs
request.show().then(function(instrumentresponse) { // do something with the response from the ui. ...
...ity the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetcardnumberchrome no support noedge no support ≤18 — 79firefox full support 56notes disabled full support 56notes disabled notes available only in nightly builds.disabled from version 56: this feature is behind the dom.payments.request.enabled preference (needs to be set to true). to change preferences in firefox, visit about:config.
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BasicCardResponse.cardSecurityCode - Web APIs
the cardsecuritycode property of the basiccardresponse dictionary contains the security code of the card used to make the payment. syntax "cardsecuritycode" : "number" value a domstring representing the card security code. example let's look at a sample payment request: var request = new paymentrequest(supportedinstruments, details, options); // call show() to trigger the browser's payment flow. request.show().then(function(instrumentresponse) { // do something with the response from the ui. console.log(instrumentresponse.details); }) .catch(function(err) { // do something with the error from request.show(). }); once the payment flow has been triggered using paymentrequest.show() and the promise resolves successfully, the paymentresponse object available inside the fulfille...
...the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetcardsecuritycodechrome no support noedge no support ≤18 — 79firefox full support 56notes disabled full support 56notes disabled notes available only in nightly builds.disabled from version 56: this feature is behind the dom.payments.request.enabled preference (needs to be set to true). to change preferences in firefox, visit about:config.
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BasicCardResponse.cardholderName - Web APIs
the cardnumber property of the basiccardresponse dictionary contains the cardholder name of the card used to make the payment. syntax name = basiccardresponse.cardholdername; value a domstring indicating the name of the cardholder. example let's look at a sample payment request: var request = new paymentrequest(supportedinstruments, details, options); // call show() to trigger the browser's payment flow. request.show().then(function(instrumentresponse) { // do something with the response from the ui. console.log(instrumentresponse.details); }) .catch(function(err) { // do something with the error from request.show(). }); once the payment flow has been triggered using paymentrequest.show() and the promise resolves successfully, the paymentresponse object available inside the...
... the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ctured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetcardholdernamechrome no support noedge no support ≤18 — 79firefox full support 56notes disabled full support 56notes disabled notes available only in nightly builds.disabled from version 56: this feature is behind the dom.payments.request.enabled preference (needs to be set to true). to change preferences in firefox, visit about:config.
...And 7 more matches

BasicCardResponse.expiryMonth - Web APIs
the expirymonth property of the basiccardresponse dictionary contains the expiry month of the card used to make the payment. syntax "expirymonth" : "number" value a domstring representing the card expiry month as a two-digit number in the range 01 to 12. example let's look at a sample payment request: var request = new paymentrequest(supportedinstruments, details, options); // call show() to trigger the browser's payment flow. request.show().then(function(instrumentresponse) { // do something with the response from the ui. console.log(instrumentresponse.details); }) .catch(function(err) { // do something with the error from request.show(). }); once the payment flow has been triggered using paymentrequest.show() and the promise resolves successfully, the paymentresponse obje...
...ty the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...tructured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetexpirymonthchrome no support noedge no support ≤18 — 79firefox full support 56notes disabled full support 56notes disabled notes available only in nightly builds.disabled from version 56: this feature is behind the dom.payments.request.enabled preference (needs to be set to true). to change preferences in firefox, visit about:config.
...And 7 more matches

BasicCardResponse.expiryYear - Web APIs
the expiryyear property of the basiccardresponse dictionary contains the expiry year of the card used to make the payment. syntax "expiryyear" : "number" value a domstring representing the card expiry year as a four-digit number in the range 0000 to 9999. example let's look at a sample payment request: var request = new paymentrequest(supportedinstruments, details, options); // call show() to trigger the browser's payment flow. request.show().then(function(instrumentresponse) { // do something with the response from the ui. console.log(instrumentresponse.details); }) .catch(function(err) { // do something with the error from request.show(). }); once the payment flow has been triggered using paymentrequest.show() and the promise resolves successfully, the paymentresponse obj...
...ity the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetexpiryyearchrome no support noedge no support ≤18 — 79firefox full support 56notes disabled full support 56notes disabled notes available only in nightly builds.disabled from version 56: this feature is behind the dom.payments.request.enabled preference (needs to be set to true). to change preferences in firefox, visit about:config.
...And 7 more matches

BlobEvent.timecode - Web APIs
patibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
... send us a pull request. ...
...And 7 more matches

FetchEvent.navigationPreload - Web APIs
y table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...a pull request. ...
...And 7 more matches

File.webkitRelativePath - Web APIs
compatibility table in this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
... you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
.... ...
...And 7 more matches

FontFaceSetLoadEvent - Web APIs
able on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...e to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...owser-compat-data and send us a pull request. ...
...And 7 more matches

HTMLImageElement.alt - Web APIs
the htmlimageelement property alt provides fallback (alternate) text to display when the image specified by the <img> element is not loaded. this may be the case because of an error, because the user has disabled the loading of images, or because the image simply hasn't finished loading yet. perhaps the most important reason to use the alt tag is to support accessibility, as the alt text may be used by screen readers and other assistive technologies to help differently-abled users make full use of your content. it will be read aloud or sent to the touch device, for example, to support visually impaired users. think of it like this: when choosing alt strings for your images, imagine what you would say when reading the page to someone over the phone without mentioning that there's an image ...
...text should be the name of that state. for example, if an image is a badge that's shown on a page to indicate that the content of the page is new and has been updated recently, the corresponding alt text might be "updated recently" or even "updated on 27 august 2019". in this example, a starburst image with the word "new!" is used to indicate that an article is about something new (and probably supposedly also exciting). the alt attribute is set to new page! to allow that text to be displayed in place of the image if the image isn't available. it is also available to be read by screen readers. html the html below creates a snippet of content from a site using the described icon. note the use of the alt attribute on the <img>, providing a good substitution string to use in case the image d...
...atibility the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 7 more matches

HTMLImageElement.complete - Web APIs
lity the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...uctured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 7 more matches

HTMLImageElement.crossOrigin - Web APIs
y the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...red data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 7 more matches

HTMLImageElement.currentSrc - Web APIs
tibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
... you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetcurrentsrc experimentalchrome full support 45edge full support 13firefox full support 38 full support 38 no support 32 — 52disabled disabled from version 32 until version 52 (exclusive): this feature is behind the dom.image.srcset.enabled preference (needs to be set to true). to change preferences in firefox, ...
...ox full support 38 full support 38 no support 32 — 52disabled disabled from version 32 until version 52 (exclusive): this feature is behind the dom.image.srcset.enabled preference (needs to be set to true). ...
...And 7 more matches

HTMLImageElement.naturalHeight - Web APIs
the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ed data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ttps://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 7 more matches

HTMLImageElement.naturalWidth - Web APIs
the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...red data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 7 more matches

IDBCursor.advance() - Web APIs
ity the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
... structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
..., please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 7 more matches

IDBCursor.continue() - Web APIs
lity the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
... please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 7 more matches

IDBCursor.delete() - Web APIs
bility the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...m structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...a, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 7 more matches

IDBCursor.direction - Web APIs
ty the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...tructured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 7 more matches

IDBCursor.primaryKey - Web APIs
the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ructured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...lease check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 7 more matches

IDBCursor.source - Web APIs
lity the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...m structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...a, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 7 more matches

IDBCursor.update() - Web APIs
lity the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...m structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...a, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 7 more matches

IDBCursorWithValue.value - Web APIs
bility the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...om structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ta, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 7 more matches

IDBDatabase.close() - Web APIs
bility the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...om structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ta, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 7 more matches

IDBDatabase.deleteObjectStore() - Web APIs
compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...d data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...heck out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 7 more matches

IDBDatabase.name - Web APIs
bility the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...rom structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ata, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 7 more matches

IDBDatabase.objectStoreNames - Web APIs
e compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ed data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 7 more matches

IDBDatabase.onabort - Web APIs
lity the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
... structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
..., please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 7 more matches

IDBDatabase.onclose - Web APIs
lity the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...tured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...b.com/mdn/browser-compat-data and send us a pull request. ...
...And 7 more matches

IDBDatabase.onerror - Web APIs
lity the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
... structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
..., please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 7 more matches

IDBDatabase.onversionchange - Web APIs
he compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...red data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
... check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 7 more matches

IDBDatabase.version - Web APIs
lity the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
... structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
..., please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 7 more matches

IDBDatabaseException - Web APIs
is page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
... to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...efirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetidbdatabaseexception deprecatednon-standardchrome full support 12prefixed full support 12prefixed prefixed implemented with the vendor prefix: webkitedge full support ≤79prefixed full support ≤79prefixed prefixed implemented with the vendor prefix: webkitfirefox no support 4 — 14ie no support noopera no support nosafari no support ...
...And 7 more matches

IDBEnvironment - Web APIs
on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...e to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...hub.com/mdn/browser-compat-data and send us a pull request. ...
...And 7 more matches

IDBKeyRange.bound() - Web APIs
bility the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...om structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ta, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 7 more matches

IDBKeyRange.lower - Web APIs
bility the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...om structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ta, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 7 more matches

IDBKeyRange.lowerBound() - Web APIs
y the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ructured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...lease check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 7 more matches

IDBKeyRange.lowerOpen - Web APIs
ty the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...tructured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 7 more matches

IDBKeyRange.only() - Web APIs
ibility the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...rom structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ata, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 7 more matches

IDBKeyRange.upper - Web APIs
bility the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...om structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ta, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 7 more matches

IDBKeyRange.upperBound() - Web APIs
y the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ructured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...lease check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 7 more matches

IDBKeyRange.upperOpen - Web APIs
ty the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...tructured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 7 more matches

IDBRequest.onerror - Web APIs
lity the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
... structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ease check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 7 more matches

IDBRequest.onsuccess - Web APIs
ty the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...tructured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...se check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 7 more matches

IDBRequest.readyState - Web APIs
y the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ructured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...e check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 7 more matches

IDBRequest.result - Web APIs
ility the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...m structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...lease check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 7 more matches

IDBRequest.source - Web APIs
ility the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...m structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...lease check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 7 more matches

IDBRequest.transaction - Web APIs
the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...uctured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
... check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 7 more matches

IDBTransaction.abort() - Web APIs
ibility the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...om structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 7 more matches

IDBTransaction.mode - Web APIs
ibility the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...rom structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
... please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 7 more matches

IDBTransaction.objectStore() - Web APIs
y the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...uctured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
... check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 7 more matches

IDBTransaction.onabort - Web APIs
lity the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
... structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ease check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 7 more matches

IDBTransaction.onerror - Web APIs
lity the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
... structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ease check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 7 more matches

Metadata - Web APIs
able on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...echromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetmetadata experimentalnon-standardchrome full support 13prefixed full support 13prefixed prefixed implemented with the vendor prefix: webkitedge full support ≤79prefixed full support ≤79prefixed prefixed implemented with the vendor prefix: webkitfirefox no support noie no support noopera no support nosafari no support ...
...And 7 more matches

NonDocumentTypeChildNode.nextElementSibling - Web APIs
e is div-02</div> <script type="text/javascript"> var el = document.getelementbyid('div-01').nextelementsibling; console.log('siblings of div-01:'); while (el) { console.log(el.nodename); el = el.nextelementsibling; } </script> this example outputs the following into the console when it loads: siblings of div-01: div script polyfill for internet explorer 8 this property is unsupported prior to ie9, so the following snippet can be used to add support to ie8: // source: https://github.com/alhadis/snippets/blob/master/js/polyfills/ie8-child-elements.js if(!("nextelementsibling" in document.documentelement)){ object.defineproperty(element.prototype, "nextelementsibling", { get: function(){ var e = this.nextsibling; while(e && 1 !== e.node...
...compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ta. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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PaymentRequest.shippingOption - Web APIs
the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
... data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetshippingoptionchrome full support 61edge full support 15firefox full support 55notes disabled full support 55notes disabled notes available only in nightly builds.disabled from version 55: this feature is behind the dom.payments.request.enabled preference (needs to be set to true). to change preferences in firefox, visit about:...
... 15firefox full support 55notes disabled full support 55notes disabled notes available only in nightly builds.disabled from version 55: this feature is behind the dom.payments.request.enabled preference (needs to be set to true). ...
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PaymentRequest.shippingType - Web APIs
the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ed data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetshippingtypechrome full support 61edge full support 15firefox full support 55notes disabled full support 55notes disabled notes available only in nightly builds.disabled from version 55: this feature is behind the dom.payments.request.enabled preference (needs to be set to true). to change preferences in firefox, visit about:...
... 15firefox full support 55notes disabled full support 55notes disabled notes available only in nightly builds.disabled from version 55: this feature is behind the dom.payments.request.enabled preference (needs to be set to true). ...
...And 7 more matches

PaymentResponse.details - Web APIs
lity the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...uctured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetdetailschrome full support 61edge full support 15firefox full support 56notes disabled full support 56notes disabled notes available only in nightly builds.disabled from version 56: this feature is behind the dom.payments.request.enabled preference (needs to be set to true). to change preferences in firefox, visit about:...
... 15firefox full support 56notes disabled full support 56notes disabled notes available only in nightly builds.disabled from version 56: this feature is behind the dom.payments.request.enabled preference (needs to be set to true). ...
...And 7 more matches

SVGLength - Web APIs
object itself is read only. methods name & arguments return description newvaluespecifiedunits(in unsigned short unittype, in float valueinspecifiedunits) void reset the value as a number with an associated unittype, thereby replacing the values for all of the attributes on the object. exceptions: a domexception with code not_supported_err is raised if unittype is svg_lengthtype_unknown or not a valid unit type constant (one of the other svg_lengthtype_* constants defined on this interface). a domexception with code no_modification_allowed_err is raised when the length corresponds to a read only attribute or when the object itself is read only. converttospecifiedunits(in unsigned short unittype) ...
...ity the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 7 more matches

SVGTransform - Web APIs
t is live, meaning that any changes made to the svgtransform object are immediately reflected in the matrix object and vice versa. in case the matrix object is changed directly (i.e., without using the methods on the svgtransform interface itself) then the type of the svgtransform changes to svg_transform_matrix. for svg_transform_matrix, the matrix contains the a, b, c, d, e, f values supplied by the user. for svg_transform_translate, e and f represent the translation amounts (a=1, b=0, c=0 and d=1). for svg_transform_scale, a and d represent the scale amounts (b=0, c=0, e=0 and f=0). for svg_transform_skewx and svg_transform_skewy, a, b, c and d represent the matrix which will result in the given skew (e=0 and f=0). for svg_transform_rotate, a, b, c, d, e and ...
... the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...d data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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SharedWorkerGlobalScope.applicationCache - Web APIs
e compatibility table in this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
.../github.com/mdn/browser-compat-data and send us a pull request. ...
...And 7 more matches

SharedWorkerGlobalScope.onconnect - Web APIs
ity the compatibility table in this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ctured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 7 more matches

Starting up and shutting down a WebXR session - Web APIs
the the navigator property xr, which returns the xrsystem object if suitable xr hardware is available for your use given the hardware available and your document's environment. thus the simplest code that fetches the xrsystem object is: const xr = navigator.xr; the value of xr will be null or undefined if webxr isn't available. ...
...ment api, webxr support is limited to specific devices and browsers; and even on those, it may not be enabled by default. there may be options available to allow you to experiment with webxr even if you don't have a compatible system, however. webxr polyfill the team designing the webxr specification has published a webxr polyfill which you can use to simulate webxr on browsers which don't have support for the webxr apis. if the browser supports the older webvr api, that is used. otherwise, the polyfill falls back to an implementation which uses google's cardboard vr api. the polyfill is maintained alongside the specification, and is kept up to date with the specification. ...
... be sure to read the readme carefully; the polyfill comes in several versions depending on what degree of compatibility with newer javascript features your target browsers include. ...
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Using the Web Speech API - Web APIs
cognition processing, so it won't work offline. demo to show simple usage of web speech recognition, we've written a demo called speech color changer. when the screen is tapped/clicked, you can say an html color keyword, and the app's background color will change to that color. to run the demo, you can clone (or directly download) the github repo it is part of, open the html index file in a supporting desktop browser, or navigate to the live demo url in a supporting mobile browser like chrome. browser support support for web speech api speech recognition is curently limited to chrome for desktop and android — chrome has supported it since around version 33 but with prefixed interfaces, so you need to include prefixed versions of them, e.g. webkitspeechrecognition. html and css the...
... paragraph, and a div into which we output diagnostic messages. <h1>speech color changer</h1> <p>tap/click then say a color to change the background color of the app.</p> <div> <p class="output"><em>...diagnostic messages</em></p> </div> the css provides a very simple responsive styling so that it looks ok across devices. javascript let's look at the javascript in a bit more detail. ...
...ostic messages. <h1>speech color changer</h1> <p>tap/click then say a color to change the background color of the app.</p> <div> <p class="output"><em>...diagnostic messages</em></p> </div> the css provides a very simple responsive styling so that it looks ok across devices. javascript let's look at the javascript in a bit more detail. ...
...And 7 more matches

Window.print() - Web APIs
ibility the compatibility table in this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ructured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...fariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetprintchrome full support 1notes full support 1notes notes starting with chrome 46, this method is blocked inside an <iframe> unless its sandbox attribute has the value allow-modals.edge full support 12firefox full support 1ie full support 5opera full support 6notes full support 6notes notes starting with opera 33, this method is blocked inside an <iframe> unless its sandbox attribu...
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Window.prompt() - Web APIs
bility the compatibility table in this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...uctured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...it does not display a prompt to the user, and always returns u...
...And 7 more matches

WorkerNavigator.permissions - Web APIs
e a permissions object. examples self.navigator.permissions.query({name:'notifications'}).then(function(result) { if (result.state === 'granted') { shownotification(); } else if (result.state === 'prompt') { requestnotificationpermission() } }); specification specification status comment permissions working draft initial definition. browser support the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetpermissions experimentalchrome ...
...ibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 7 more matches

:checked - CSS: Cascading Style Sheets
ity the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...tured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ll request. ...
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@charset - CSS: Cascading Style Sheets
lity the compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...uctured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...And 7 more matches

font-variant-caps - CSS: Cascading Style Sheets
s; font-variant-caps: all-small-caps; font-variant-caps: petite-caps; font-variant-caps: all-petite-caps; font-variant-caps: unicase; font-variant-caps: titling-caps; /* global values */ font-variant-caps: inherit; font-variant-caps: initial; font-variant-caps: unset; the font-variant-caps property is specified using a single keyword value from the list below. in each case, if the font doesn't support the opentype value, then it synthesizes the glyphs. values normal deactivates of the use of alternate glyphs. small-caps enables display of small capitals (opentype feature: smcp). small-caps glyphs typically use the form of uppercase letters but are reduced to the size of lowercase letters. all-small-caps enables display of small capitals for both upper and lowercase letters (openty...
... compatibility table on this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
...ta. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetfont-variant-capschrome full support 52edge full support 79firefox full support 34 full support 34 no support 24 — 34disabled disabled from version 24 until version 34 (exclusive): this feature is behind the layout.css.font-features.enabled preference (needs to be set to true). to change preferences in f...
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outline-color - CSS: Cascading Style Sheets
lue */ outline-color: invert; /* global values */ outline-color: inherit; outline-color: initial; outline-color: unset; the outline-color property is specified as any one of the values listed below. values <color> the color of the outline, specified as a <color>. invert to ensure the outline is visible, performs a color inversion of the background. note that browsers are not required to support this value; if they don't, this keyword is considered invalid. description an outline is a line that is drawn around an element, outside the border. unlike the element's border, the outline is drawn outside the element's frame, and may overlap other content. the border, on the other hand, will actually alter the page's layout to ensure that it fits without overlapping anything else (unless...
...essibility guidelines (wcag), a ratio of 4.5:1 is required for text content and 3:1 for larger text such as headings. large text is defined as 18.66px and bold or larger, or 24px or larger. webaim: color contrast checker mdn understanding wcag, guideline 1.4 explanations understanding success criterion 1.4.3 | w3c understanding wcag 2.0 formal definition initial valueinvert, for browsers supporting it, currentcolor for the otherapplies toall elementsinheritednocomputed valuefor the keyword invert, the computed value is invert. for the color value, if the value is translucent, the computed value will be the rgba() corresponding one. if it isn't, it will be the rgb() corresponding one. the transparent keyword maps to rgba(0,0,0,0).animation typea color formal syntax <color> | invertw...
... the compatibility table in this page is generated from structured data. if you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. ...
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Creating a cross-browser video player - Developer guides
an that the specified image is to be displayed until the user chooses to play the video. ie9 will only use the specified poster image in this way if preload="none" is set; otherwise, it will take the first still of the video and display that instead. three different video sources are provided for the player: mp4, webm, and ogg. using these different source formats gives the best chance of being supported across all browsers that support html5 video. for further information on video formats and browser compatibility, see supported media formats. for browsers that do not support html5 video, a flash player is provided that will allow playback of the mp4 video source, provided the end user has flash installed. in addition a download link is displayed to allow users to download the mp4 video f...
... would allow playback of the video in most browsers, using the browser's default control set. the next step is to define a custom control set, also in html, which will be used to control the video. the control set most browser's default video controls have the following functionality: play/pause mute volume control progress bar skip ahead go fullscreen the custom control set will also support this functionality, with the addition of a stop button. once again the html is quite straightforward, using an unordered list with list-style-type:none set to enclose the controls, each of which is a list item with float:left. for the progress bar, the progress element is taken advantage of, with a fallback provided for browsers that don't support it (e.g. ie8 and ie9). this list is inserted...
.../li> <li><button id="mute" type="button">mute/unmute</button></li> <li><button id="volinc" type="button">vol+</button></li> <li><button id="voldec" type="button">vol-</button></li> <li><button id="fs" type="button">fullscreen</button></li> </ul> each button is given an id so it can be easily accessed with javascript. the span within the <progress> element is for browsers that do not support the progress element and will be updated at the same time as progress (this span element won't be visible on browsers that support progress). the controls are initially hidden with a css display:none and will be enabled with javascript. again if a user has javascript disabled, the custom control set will not appear and they can use the browser's default control set unhindered. of course thi...
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<video>: The Video Embed element - HTML: Hypertext Markup Language
you can use <video> for audio content as well, but the <audio> element may provide a more appropriate user experience. the source for this interactive example is stored in a github repository. if you'd like to contribute to the interactive examples project, please clone https://github.com/mdn/interactive-examples and send us a pull request. the above example shows simple usage of the <video> element. ...
...he <img> element, we include a path to the media we want to display inside the src attribute; we can include other attributes to specify information such as video width and height, whether we want it to autoplay and loop, whether we want to show the browser's default video controls, etc. the content inside the opening and closing <video></video> tags is shown as a fallback in browsers that don't support the element. attributes like all other html elements, this element supports the global attributes. autoplay a boolean attribute; if specified, the video automatically begins to play back as soon as it can do so without stopping to finish loading the data. note: sites that automatically play audio (or videos with an audio track) can be an unpleasant experience for users, so should be av...
...he user agent is trying to fetch media data, but data is unexpectedly not forthcoming. suspend media data loading has been suspended. timeupdate the time indicated by the currenttime attribute has been updated. volumechange the volume has changed. waiting playback has stopped because of a temporary lack of data usage notes browsers don't all support the same video formats; you can provide multiple sources inside nested <source> elements, and the browser will then use the first one it understands. <video controls> <source src="myvideo.mp4" type="video/mp4"> <source src="myvideo.webm" type="video/webm"> <p>your browser doesn't support html5 video. here is a <a href="myvideo.mp4">link to the video</a> instead.</p> </video> we o...
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Classes - JavaScript
hrown, and certain keywords are reserved for future versions of ecmascript. constructor the constructor method is a special method for creating and initializing an object created with a class. there can only be one special method with the name "constructor" in a class. a syntaxerror will be thrown if the class contains more than one occurrence of a constructor method. a constructor can use the super keyword to call the constructor of the super class. prototype methods see also method definitions. class rectangle { constructor(height, width) { this.height = height; this.width = width; } // getter get area() { return this.calcarea(); } // method calcarea() { return this.height * this.width; } } const square = new rectangle(10, 10); console.log(square.area...
... this.height = height; this.width = width; } } static (class-side) data properties and prototype data properties must be defined outside of the classbody declaration: rectangle.staticwidth = 20; rectangle.prototype.prototypewidth = 25; field declarations public and private field declarations are an experimental feature (stage 3) proposed at tc39, the javascript standards committee. support in browsers is limited, but the feature can be used through a build step with systems like babel. public field declarations with the javascript field declaration syntax, the above example can be written as: class rectangle { height = 0; width; constructor(height, width) { this.height = height; this.width = width; } } by declaring fields up-front, class definitions become...
...mal properties can. for more information, see private class fields. sub classing with extends the extends keyword is used in class declarations or class expressions to create a class as a child of another class. class animal { constructor(name) { this.name = name; } speak() { console.log(`${this.name} makes a noise.`); } } class dog extends animal { constructor(name) { super(name); // call the super class constructor and pass in the name parameter } speak() { console.log(`${this.name} barks.`); } } let d = new dog('mitzie'); d.speak(); // mitzie barks. if there is a constructor present in the subclass, it needs to first call super() before using "this". one may also extend traditional function-based "classes": function animal (name) { this.name = ...
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OpenSearch description format
the opensearch description format lets a website describe a search engine for itself, so that a browser or other client application can use that search engine. opensearch is supported by (at least) firefox, edge, internet explorer, safari, and chrome. (see reference material for links to other browsers' documentation.) firefox also supports additional features not in the opensearch standard, such as search suggestions and the <searchform> element. this article focuses on creating opensearch-compatible search plugins that support these additional firefox features. opensearch description files can be advertised as described in autodiscovery of search plugins, and can be installed programmatically as described in adding search engines from web pages. opensearch description file the xml file...
...are stored in the profile's searchplugins/ folder). http: and https: urls are converted to data: uris when this is done. note: for icons loaded remotely (that is, from https:// uris as opposed to data: uris), firefox will reject icons larger than 10 kilobytes. url describes the url or urls to use for the search. the template attribute indicates the base url for the search query. ...
... for search suggestions, the application/x-suggestions+json url template is used to fetch a suggestion list in json format. ...
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page-mod - Archive of obsolete content
org": var pagemod = require("sdk/page-mod"); pagemod.pagemod({ include: "*.mozilla.org", contentscript: 'window.alert("page matches ruleset");' }); you can modify the document in your script: var pagemod = require("sdk/page-mod"); pagemod.pagemod({ include: "*.mozilla.org", contentscript: 'document.body.innerhtml = ' + ' "<h1>page matches ruleset</h1>";' }); you can supply the content script(s) in one of two ways: as a string literal, or an array of string literals, assigned to the contentscript option, as above as separate files supplied in your add-on's "data" directory. if you supply the scripts as separate files in the "data" directory, you specify them using with a url, typically constructed using the url() method of the self module's data object: va...
..., debug and review. a page-mod only attaches scripts to documents loaded in tabs. it will not attach scripts to add-on panels, page-workers, sidebars, or firefox hidden windows. to stop a page-mod from making any more modifications, call its destroy() method. the pagemod constructor takes a number of other options to control its behavior: contentstyle lists stylesheets to attach, supplied as strings. contentstylefile lists stylesheets to attach, supplied in separate files. contentscriptoptions defines read-only values accessible to content scripts. attachto controls whether to attach scripts to tabs that were already open when the page-mod was created, and whether to attach scripts to iframes as well as the topmost document. conten...
...on file named "icon-16.png" saved in your add-on's "data" directory. you could use this icon: . private windows if your add-on has not opted into private browsing, then your page-mods will not attach content scripts to documents loaded into private windows, even if their urls match the pattern you have specified. to learn more about private windows, how to opt into private browsing, and how to support private browsing, refer to the documentation for the private-browsing module. globals constructors pagemod(options) creates a page-mod. parameters options : object required options: name: include type: string, regexp, or array of (string or regexp) a match pattern string or an array of match pattern strings. these define the documents to which the page-mod applies. at least one matc...
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Migrating from Internal Linkage to Frozen Linkage - Archive of obsolete content
ing value; ptr->gettermethod(getter_copies(value)); - const prunichar *strvalue = value; + // nsstring doesn't cast directly to prunichar*, use .get()+ const prunichar *strvalue = value.get(); the frozen string api doesn't accept a length for .truncate(). use .setlength() instead: nsstring mystring = somestring; - mystring.truncate(4); + mystring.setlength(4); the frozen string api doesn't support the iterator or const_iterator classes, but you can use pointers the same way: nsstring mystring = somestring; - nsstring::const_iterator begin, end;- mystring.beginreading(begin); mystring.endreading(end); + const prunichar *begin, *end;+ mystring.beginreading(&begin, &end); the frozen string api uses comparator functions instead of a virtual comparator class. unicharutils has been modifi...
... particular you may need to use ns_literal_(c)string("") instead of empty(c)string. the equalsignorecase method does not take a length parameters. you may be able to use stringbeginswith instead. the findinreadable methods do not exist in the external api. you may be able to use the find methods instead. the tonewcstring, tonewunicode methods only work on the appropriate string class. you need to supply the appropriate conversion yourself. the adopt and getter_copies methods do not work on abstract strings. instead of passing getter_copies(astring) to a method expecting a character pointer out parameter, you will need to use a temporary variable and copy the result.missing headers some headers are included from idl files only when mozilla_internal_api is defined (actually, they shouldn't be t...
...rors about undeclared do_createinstance: #include "nscomponentmanagerutils.h" for errors about undeclared do_getservice: #include "nsservicemanagerutils.h" for errors about undeclared ns_getspecialdirectory: #include "nsdirectoryserviceutils.h" utility classes some utility classes could previously be created with ns_new* utility functions. ...
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MCD, Mission Control Desktop, AKA AutoConfig - Archive of obsolete content
rbird if thunderbird ask you to import your profile from netscape/mozilla/tb depending on you mail client history, don't import anything, here we want to check the autoconfig job alone! that should work, just restart the process by setting a different user variable (user=procacci, user=test etc... anyone in your ldap directory...) to check multiuser autoconfig. thunderbird (previous release) support of autoconfig and ldap calls below is a "try and catch" we had in previous release of thunderbird where that feature wasn't compiled in by default, it can help if needed ... unfortunately, the autoconfig option and ldap support for autoconfig (getldapattributes) was not compiled in fedora11 default thunderbird package (thunderbird-3.0-2.3.beta2.fc11.src.rpm) . so we needed to patch and rec...
...istrator. error: getldapattibutes failed: [exception... "component returned failure code: 0xc1f30001 (ns_error_not_initialized) [nsildapurl.spec]" nsresult: "0xc1f30001 (ns_error_not_initialized)" location: "js frame :: file:////usr/lib/thunderbird-3.0b2/defaults/autoconfig/prefcalls.js :: getldapattributes :: line 174" data: no] bug 295329 had been re-opened . autoconfig option and ldap support in thunderbird 1.5.x fortunately, autoconfig is now part of thunderbird default packages. moz_ldap_xpcom=1 and moz_extensions_default="wallet spellcheck xmlextras pref webservices universalcharset auth" are now present in the default configure script. see bug 295329 for details. add the autoconfig option for old thunderbird 1.0.x by default, autoconfig did not make part of the binaries dis...
...s now part of thunderbird default packages. moz_ldap_xpcom=1 and moz_extensions_default="wallet spellcheck xmlextras pref webservices universalcharset auth" are now present in the default configure script. see bug 295329 for details. add the autoconfig option for old thunderbird 1.0.x by default, autoconfig did not make part of the binaries distribution of thunderbird (1.0.x). it was apparently supposed to increase the load of the binary for a feature not used by lots of individuals. however for enterprise deployment, it is vital! so we needed to recompile thunderbird with autoconfig support, it's just a matter of adding --enable-extensions=pref in mozconfig file. on my fedora core 3 system, i took the thunderbird source package thunderbird-1.0.2-1.3.3.src.rpm installed it (rpm -i) then mo...
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The Joy of XUL - Archive of obsolete content
ns right away. also described are some reasons application developers might choose to leverage xul and mozilla technology for building cross-platform applications. this same investigation will provide sufficient explanation of mozilla's motivation to build xul and why the mozilla platform is constructed using it. the key features and benefits of xul will be explored followed by an examination of supporting mozilla technologies. finally, a mini case study of a calendar application written in xul will reinforce the benefits of building applications with mozilla. key features and benefits powerful widget-based markup language the goal of xul is to build cross platform applications, in contrast with dhtml which is intended for developing web pages. for this reason, xul is oriented ...
...rast with dhtml which is intended for developing web pages. for this reason, xul is oriented toward application artifacts such as windows, labels, and buttons instead of pages, heading levels, and hypertext links. in fact, many developers invest a significant amount of effort to achieve these results in their dhtml web applications but at the cost of complexity and performance and without any supporting standards. based on existing standards xul is an xml language based on w3c standard xml 1.0. applications written in xul are based on additional w3c standard technologies featuring html 4.0; cascading style sheets (css) 1 and 2; document object model (dom) levels 1 and 2; javascript 1.5, including ecma-262 edition 3 (ecmascript); xml 1.0. platform portability li...
...eaturing html 4.0; cascading style sheets (css) 1 and 2; document object model (dom) levels 1 and 2; javascript 1.5, including ecma-262 edition 3 (ecmascript); xml 1.0. platform portability like html, xul is designed to be platform-neutral, making applications easily portable to all of the operating systems on which mozilla runs. ...
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Developing cross-browser and cross-platform pages - Archive of obsolete content
s of the browser which loads your web page. as a web author, you understandably want to avoid script errors and page layout problems and you may want to ensure your scripts reach as wide an audience as possible. there are 2 known approaches for such goals: the browser identification approach (also known as useragent string detection and often referred as "browser sniffing") and the object/feature support detection approach. the browser identification approach is now known to be complicated, unreliable and difficult to maintain. browser identification approach (aka "browser sniffing"): not best, not reliable approach this approach, still commonly used nowadays, attempts to identify the browser and makes the web author at design time decide what that implies in terms of capabilities of the vi...
...they want in the navigator.useragent string and this may trick your code into executing a "wrong" block of code. moreover, there are many cases where even the accurately-identified browser does not perform as it is reputed/expected to. so if "browser sniffing" is unreliable and difficult, then how do you code safely for different browsers and different browser versions? ... using object/feature support detection approach: best and overall most reliable when you use object/feature support detection, you only implement those features whose support you have first tested and verified on the visiting browser. this method has the advantage of not requiring you to test for anything except whether the particular features you code are supported in the visiting browser. let's see a basic, simple ob...
...detection approach: best and overall most reliable when you use object/feature support detection, you only implement those features whose support you have first tested and verified on the visiting browser. this method has the advantage of not requiring you to test for anything except whether the particular features you code are supported in the visiting browser. let's see a basic, simple object support detection example. function hideelement(id_attribute_value) { if (document.getelementbyid && document.getelementbyid(id_attribute_value) && document.getelementbyid(id_attribute_value).style ) { document.getelementbyid(id_attribute_value).style.visibility = "hidden"; }; } // example: // <button type="button" onclick="hideelement('d1');">hide div</button> // <div id="d1"...
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Other form controls - Learn web development
tion>carrot</option> <option>eggplant</option> <option>potato</option> </optgroup> </select> note: in the case of multiple choice select boxes, you'll notice that the select box no longer displays the values as drop-down content — instead, all values are displayed at once in a list, with the optional size attribute determining the height of the widget. note: all browsers that support the <select> element also support the multiple attribute. autocomplete box you can provide suggested, automatically-completed values for form widgets using the <datalist> element with child <option> elements to specify the values to display. the <datalist> needs to be given an id. the data list is then bound to an <input> element (e.g. a text or email input type) using the list attribute, ...
... example. ...
...(with fallback)</label> <input type="text" id="myfruit" name="fruit" list="fruitlist"> <datalist id="fruitlist"> <label for="suggestion">or pick a fruit</label> <select id="suggestion" name="altfruit"> <o...
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Mozilla's Section 508 Compliance
dication of the current focus shall be provided that moves among interactive interface elements as the input focus changes. the focus shall be programmatically exposed so that assistive technology can track focus and focus changes. complete. we expose focus programmatically via msaa (windows) and atk (linux/unix). incomplete, we show focus but need to expose it programmatically by supporting carbon/cocoa accessibility. (d) sufficient information about a user interface element including the identity, operation and state of the element shall be available to assistive technology. when an image represents a program element, the information conveyed by the image must also be available in text. complete. we expose this information to assistive technolog...
...iety of color selections capable of producing a range of contrast levels shall be provided. complete. mozilla's appearance preferences panel contains a large number of color possibilities. (k) software shall not use flashing or blinking text, objects, or other elements having a flash or blink frequency greater than 2 hz and lower than 55 hz. complete. mozilla supports of <blink> and text-decoration: blink in web pages. in these situations mozilla blinks 1 hz, which is within the allowable range and follows the stricter mil-std standard. (l) when electronic forms are used, the form shall allow people using assistive technology to access the information, field elements, and functionality required for completion and submission of the fo...
... clutter accessibility. ...
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Introduction to NSPR
they access. this, and the fact that threads share an address space with other threads in the same process, makes it important to remember that threads are not processes . nspr threads are scheduled in two separate domains: local threads are scheduled within a process only and are handled entirely by nspr, either by completely emulating threads on each host operating system (os) that doesn't support threads, or by using the threading facilities of each host os that does support threads to emulate a relatively large number of local threads by using a relatively small number of native threads. global threads are scheduled by the host os--not by nspr--either within a process or across processes on the entire host. global threads correspond to native threads on the host os. nspr thread...
...uling nspr threads are scheduled by priority and can be preempted or interrupted. the sections that follow briefly introduce the nspr approach to these three aspects of thread scheduling. setting thread priorities preempting threads interrupting threads for reference information on the nspr api used for thread scheduling, see threads. setting thread priorities the host operating systems supported by nspr differ widely in the mechanisms they use to support thread priorities. in general, an nspr thread of higher priority has a statistically better chance of running relative to threads of lower priority. however, because of the multiple strategies to provide execution vehicles for threads on various host platforms, priorities are not a clearly defined abstraction in nspr. at best they ...
...of cpu time that a higher-priority thread might expect relative to a lower-priority thread. this preference is still subject to resource availability, and must not be used in place of proper synchronization. for more information on thread synchronization, see nspr thread synchronization. ...
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NSS 3.12.4 release notes
rce tarball: https://ftp.mozilla.org/pub/mozilla.org/security/nss/releases/nss_3_12_4_rtm/src/. major changes in nss 3.12.4 nss 3.12.4 is the version that we submitted to nist for fips 140-2 validation. currently nss 3.12.4 is in the "review pending" state in the fips 140-2 pre-validation list at http://csrc.nist.gov/groups/stm/cmvp/documents/140-1/140inprocess.pdf added crl distribution point support (see cert.h). cert_decodecrlissuingdistributionpoint cert_findcrlissuingdistpointexten the old documentation of the expression matching syntax rules was incorrect, and the new corrected documentation is as follows for public nssutil functions (see portreq.h): port_regexpvalid port_regexpsearch port_regexpcasesearch these functions will match a string with a shell expression. the exp...
...nly \ and ] require escaping. new functions in the nss shared library: pk11_isinternalkeyslot (see pk11pub.h) secmod_opennewslot (see pk11pub.h) new error codes (see secerr.h): sec_error_bad_info_access_method sec_error_crl_import_failed new oids (see secoidt.h) sec_oid_x509_any_policy the nssckbi pkcs #11 module's version changed to 1.75. obsolete code for win16 has been removed. ...
... has been removed. support for openvms has been removed. bugs fixed the following bugs have been fixed in nss 3.12.4. ...
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NSS 3.28 release notes
.28, which is a minor release. distribution information the hg tag is nss_3_28_rtm. nss 3.28 requires netscape portable runtime (nspr) 4.13.1 or newer. nss 3.28 source distributions are available on ftp.mozilla.org for secure https download: source tarballs: https://ftp.mozilla.org/pub/mozilla.org/security/nss/releases/nss_3_28_rtm/src/ new in nss 3.28 new functionality nss includes support for tls 1.3 draft -18. this includes a number of improvements to tls 1.3: the signed certificate timestamp, used in certificate transparency, is supported in tls 1.3 (bug 1252745). key exporters for tls 1.3 are supported (bug 1310610). this includes the early key exporter, which can be used if 0-rtt is enabled. note that there is a difference between tls 1.3 and key exporters in o...
... new functions in ssl.h ssl_exportearlykeyingmaterial implements a key exporter based on the tls 1.3 early exporter secret. ...
...exporter, which can be used if 0-rtt is enabled. note that there is a difference between tls 1.3 and key exporters in older versions of tls. tls 1.3 does not distinguish between an empty context and no context. the tls 1.3 (draft) protocol can be enabled, by defining nss_enable_tls_1_3=1 when building nss. nss includes support for the x25519 key exchange algorithm (bug 957105), which is supported and enabled by default in all versions of tls. new functions in ssl.h ssl_exportearlykeyingmaterial implements a key exporter based on the tls 1.3 early exporter secret. this api is equivalent in function to ssl_exportkeyingmaterial, but it can only succeed if 0-rtt was attempted (on the client) or accepted (on the server). ssl_sendadditionalkeyshares co...
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NSS functions
eadings are links to the individual pages where you can edit them. keywords: deprecated - function should no longer be used. updated - function has new arguments such as new flag or addition to structure. ssl functions the public functions listed here are used to configure sockets for communication via the ssl and tls protocols. in addition to the functions listed here, applications that support ssl use some of the certificate functions, crypto functions, and utility functions described below on this page. other sources of information: the nss_reference documents the functions most commonly used by applications to support ssl. the nss home page links to additional ssl documentation. if documentation is available for a function listed below, the function name is linked to eithe...
...inks to additional ssl documentation. if documentation is available for a function listed below, the function name is linked to either its mdc wiki page or its entry in the old ssl reference. the mozilla cross reference (mxr) link for each function provides access to the function definition, prototype definition, and source code references. the nss version column indicates which versions of nss support the function. function name/documentation source code nss versions nss_getclientauthdata mxr 3.2 and later nss_setdomesticpolicy mxr 3.2 and later nss_setexportpolicy mxr 3.2 and later nss_setfrancepolicy mxr 3.2 and later nssssl_versioncheck mxr 3.2.1 and later ssl_authcertificate mxr ...
...setmaxservercachelocks mxr 3.4 and later ssl_setpkcs11pinarg mxr 3.2 and later ssl_setsockpeerid mxr 3.2 and later ssl_seturl mxr 3.2 and later ssl_shutdownserversessionidcache mxr 3.7.4 and later deprecated ssl functions the following ssl functions have been replaced with newer versions. the deprecated functions are not supported by the new ssl shared libraries. applications that want to use the ssl shared libraries must convert to calling the new replacement functions listed below. each function name is linked to its entry in the old ssl reference. the mozilla cross reference (mxr) link for each function provides access to the function definition, prototype definition, and source code references. fun...
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NSS tools : modutil
spec to load into the security database. -ciphers cipher-enable-list enable specific ciphers in a module that is being added to the database. the cipher-enable-list is a colon-delimited list of cipher names. enclose this list in quotation marks if it contains spaces. -dbdir [sql:]directory specify the database directory in which to access or create security module database files. modutil supports two types of databases: the legacy security databases (cert8.db, key3.db, and secmod.db) and new sqlite databases (cert9.db, key4.db, and pkcs11.txt). if the prefix sql: is not used, then the tool assumes that the given databases are in the old format. --dbprefix prefix specify the prefix used on the database files, such as my_ for my_cert8.db. this option is provided as a special cas...
...e flagged as a default provider. the mechanism-list is a colon-delimited list of mechanism names. enclose this list in quotation marks if it contains spaces. the module becomes a default provider for the listed mechanisms when those mechanisms are enabled. if more than one module claims to be a particular mechanism's default provider, that mechanism's default provider is undefined. modutil supports several mechanisms: rsa, dsa, rc2, rc4, rc5, aes, des, dh, sha1, sha256, sha512, ssl, tls, md5, md2, random (for random number generation), and friendly (meaning certificates are publicly readable). -newpwfile new-password-file specify a text file containing a token's new or replacement password so that a password can be entered automatically with the -changepw option. -nocertdb do ...
...tory is used. usage and examples creating database files before any operations can be performed, there must be a set of security databases available. modutil can be used to create these files. the only required argument is the database that where the databases will be located. modutil -create -dbdir [sql:]directory adding a cryptographic module adding a pkcs #11 module means submitting a supporting library file, enabling its ciphers, and setting default provider status for various security mechanisms. this can be done by supplying all of the information through modutil directly or by running a jar file and install script. for the most basic case, simply upload the library: modutil -add modulename -libfile library-file [-ciphers cipher-enable-list] [-mechanisms mechanism-list] f...
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NSS tools : modutil
enable specific ciphers in a module that is being added to the database. the cipher-enable-list is a colon-delimited list of cipher names. enclose this list in quotation marks if it contains spaces. -dbdir [sql:]directory specify the database directory in which to access or create security module database files. modutil supports two types of databases: the legacy security databases (cert8.db, key3.db, and secmod.db) and new sqlite databases (cert9.db, key4.db, and pkcs11.txt). if the prefix sql: is not used, then the tool assumes that the given databases are in the old format. --dbprefix prefix specify the prefix used on the database files, such as my_ for ...
...n-delimited list of mechanism names. enclose this list in quotation marks if it contains spaces. the module becomes a default provider for the listed mechanisms when those mechanisms are enabled. if more than one module claims to be a particular mechanism's default provider, that mechanism's default provider is undefined. modutil supports several mechanisms: rsa, dsa, rc2, rc4, rc5, aes, des, dh, sha1, sha256, sha512, ssl, tls, md5, md2, random (for random number generation), and friendly (meaning certificates are publicly readable). -newpwfile new-password-file specify a text file containing a token's new or replacement password so that a password can be entered aut...
...e and examples creating database files before any operations can be performed, there must be a set of security databases available. modutil can be used to create these files. the only required argument is the database that where the databases will be located. modutil -create -dbdir [sql:]directory adding a cryptographic module adding a pkcs #11 module means submitting a supporting library file, enabling its ciphers, and setting default provider status for various security mechanisms. this can be done by supplying all of the information through modutil directly or by running a jar file and install script. for the most basic case, simply upload the library: modutil -add modulename -libfile library-file [-ciphers cipher-enable-list] [-mechanisms mechanism...
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Component Internals
odule/library implements. in this chapter we will outline this entire process. as a component in the xpcom framework illustrates, in addition to the nsgetmodule entry point, there are nsimodule and nsifactory interfaces that control the actual creation of the component, and also the string and xpcom glue parts, which we'll discuss in some detail in the next section (see xpcom glue). these latter supply ease-of-development utilities like smart pointers, generic modules support, and simple string implementations. the largest and possibly most complex part of a component is the code specific to the component itself. but where are the components? components reside in modules, and those modules are defined in shared library files that typically sit in the components directory of an xpcom appli...
...ocation of all type library files mapping of all known interfaces to type libraries where these structures are defined using the data in these two manifests, xpcom knows exactly which component libraries have been installed and what implementations go with which interfaces. additionally, it relates the components to the type libraries in which the binary representations of the interfaces they support are defined. the next section describes how to hook into the xpcom startup and registration process and make the data about your component available in these manifests, so that your component will be found and registered at startup. registration methods in xpcom what is xpcom registration? in a nutshell, registration is the process that makes xpcom aware of your component(s). as this sec...
... nsicomponentregistrar apis from service manager the registration process is fairly involved. this section introduces it in terms of xpcom initialization, and the next chapter describes what you have to do in your component code to register your component with xpcom. once the manifest files are read in, xpcom checks to see if there are any components that need to be registered. there are two supported ways to go about registering your xpcom component. the first is to use xpinstall, which is an installation technology that may or may not come with a gecko application and provides interfaces for registering your component during installation. another, more explicit way to register your component is to run the application regxpcom, which is built as part of mozilla and is also available in ...
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nsIClipboard
widget/nsiclipboard.idlscriptable this interface supports basic clipboard operations such as: setting, retrieving, emptying, matching and supporting clipboard data. ...
... widget/nsiclipboard.idlscriptable this interface supports basic clipboard operations such as: setting, retrieving, emptying, matching and supporting clipboard data. ...
... the kselectionclipboard is peculiar to the x windows system, where it refers to the primary selection, which is the one that simple mouse selection and middle-click paste ...
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nsIDOMNSHTMLDocument
dom/interfaces/html/nsidomnshtmldocument.idlscriptable this interface defines methods and properties supported by gecko on the document object that are not part of dom level 2. ...
... dom/interfaces/html/nsidomnshtmldocument.idlscriptable this interface defines methods and properties supported by gecko on the document object that are not part of dom level 2. ...
...an execcommandshowhelp(in domstring commandid); obsolete since gecko 14.0 domstring getselection(); nsidomdocument open(in acstring acontenttype, in boolean areplace); boolean querycommandenabled(in domstring commandid); boolean querycommandindeterm(in domstring commandid); boolean querycommandstate(in domstring commandid); boolean querycommandsupported(in domstring commandid); domstring querycommandtext(in domstring commandid); obsolete since gecko 14.0 domstring querycommandvalue(in domstring commandid); void releaseevents(in long eventflags); void routeevent(in nsidomevent evt); void write(); obsolete since gecko 2.0 void writeln(); obsolete since gecko 2.0 attributes ...
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