XRReferenceSpace - Web APIs
the webxr device api's xrreferencespace interface describes the coordinate system for a specific tracked entity or object within the virtual world using a specified tracking behavior.
... the tracking behavior is defined by the selected reference space type.
... it expands upon the base class, xrspace, by adding support for several different tracking behaviors as well as to request a new reference space which describes the offset transform between the tracked object and another location in the world.
...And 32 more matches

preferences/service - Archive of obsolete content
access the preferences system in firefox.
...these are the same preferences that are exposed to users in the about:config page.
... preferences/service gives you full access to the preferences system.
...And 25 more matches

Spaces and reference spaces: Spatial tracking in WebXR - Web APIs
in this guide, we'll explore how webxr uses spaces and, more specifically, reference spaces, to track the positions, orientations, and movements of objects and of the user's body in the virtual world.
... note: this article presumes that you are familiar with the concepts introduced in geometry and reference spaces in webxr: that is, the basics of 3d coordinate systems, as well as webxr spaces, reference spaces, and how reference spaces are used to create local coordinate systems for individual objects or movable components within a scene.
... representing a position using a reference space as covered in defining spatial relationships with reference spaces in geometry and reference spaces in webxr, reference spaces establish a local coordinate system which is offset from another coordinate system that is itself defined by some other space.
...And 20 more matches

extIPreferenceBranch
this content covers features introduced in thunderbird 3 the extipreferencebranch interface provides simplified access to preferences.
... the interface has a predefined root preference branch.
...for example, an extension's preferences has a root of "extensions.extensionid.", while the application-level preferences have an empty root.
...And 17 more matches

Reference - Archive of obsolete content
there are 5 cases where "javascript1.2" is mentioned in this reference: special:search?search=javascript1.2&go=go.
...--maian 23:43, 21 september 2005 (pdt) i think we need a new section in the reference that specifies the differences between versions, collecting this information into a single location rather than leaving it scattered haphazardly throughout the reference as it currently is.
...--maian 05:10, 22 september 2005 (pdt) if the examples are there specifically to show the differences between two versions of js, and if we have a section in the reference that is dedicated to discussing these differences, i would think that those samples should be included in that section of the reference.
...And 13 more matches

Reference Manual
the basics design an nscomptr is designed to be a complete replacement for raw xpcom interface pointers where they are used as owning references.
...most of the work of being an owning reference can be done in the constructor, destructor, and assignment operators of nscomptr.
...null-dereference safeguards an nscomptr will also assert at runtime if you try to dereference it when it is void, e.g., nscomptr<nsifoo> foo; // note: default initialized to |0| foo->dosomething(); // ns_precondition: "you can't dereference a null nscomptr with operator->()" a similar precondition intervenes on behalf of operator*.
...And 13 more matches

XRSession.requestReferenceSpace() - Web APIs
the requestreferencespace() method of the xrsession interface returns a promise that resolves with an instance of either xrreferencespace or xrboundedreferencespace as appropriate given the type of reference space requested.
... syntax refspacepromise = xrsession.requestreferencespace(referencespacetype); parameters type a domstring specifying the type of reference space for which an instance is to be returned.
... the string must be one of those found in the xrreferencespacetype enumerated type.
...And 13 more matches

Using content preferences - Archive of obsolete content
firefox 3 introduces the concept of content preferences.
... this permits code running within chrome (in other words: extensions and the browser itself, not web sites) to locally save preferences on a per-site basis.
...the content preferences service, implemented by nsicontentprefservice, offers functions for setting and retrieving preferences for specific sites or in the global preference space; global preferences are used whenever a site-specific preference isn't available.
...And 11 more matches

XRReferenceSpaceType - Web APIs
the xrreferencespacetype enumerated type defines the strings which identify the types of reference spaces supported by webxr.
... this type is used when calling the requestreferencespace() method to obtain a reference space for an xrsession.
... values the reference space returned by xrsession.requestreferencespace() is either xrreferencespace or xrboundedreferencespace.
...And 10 more matches

Preferences
the preference system makes it possible to store data for mozilla applications using a key/value pairing system.
... these articles provide information about how to use the preference system.
... documentation preferences system an introduction to using the preference system in mozilla.
...And 9 more matches

XRReferenceSpace: reset event - Web APIs
the reset event is sent to an xrreferencespace object when a discontinuity is detected in either the native origin or the effective origin, causing a jump in the position or orientation of objects oriented using the reference space.
... in the case of xrboundedreferencespace objects, the reset event can also be fired when the boundsgeometry changes.
... bubbles yes cancelable no interface xrreferencespaceevent event handler property onreset usage notes the reset event indicates that the coordinate system has been reset or reconfigured by changing the reference space's origin, moving and rotating it as indicated by the event's transform property.
...And 9 more matches

ReferenceError - JavaScript
the referenceerror object represents an error when a non-existent variable is referenced.
... constructor referenceerror() creates a new referenceerror object.
... instance properties referenceerror.prototype.message error message.
...And 8 more matches

NSS reference
initial notes we are migrating the ssl reference into the format described in the mdn style guide.
... the proposed chapters below are based on the chapters of the ssl reference and the categories of functions in nss public functions.
... building and installing nss overview of an nss application based on "overview of an ssl application" in the ssl reference.
...And 7 more matches

preferences - Archive of obsolete content
« xul reference home [ examples | attributes | properties | methods | related ] overview <preferences> is a container for <preference> elements.
... <preferences> element should contain one or more <preference> elements.
... examples <preferences> <preference id="pref_one" name="extensions.myextension.one" type="bool"/> <preference id="pref_two" name="extensions.myextension.two" type="string"/> ...
...And 6 more matches

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 { ...
...And 5 more matches

XRReferenceSpaceEvent - Web APIs
the webxr device api interface xrreferencespaceevent represents an event sent to an xrreferencespace.
... constructor xrreferencespaceevent() returns a new xrreferencespaceevent with the specified type and configured using the values in the given xrreferencespaceeventinit dictionary.
... properties in addition to inheriting the properties available on the parent interface, event, xrreferencespaceevent objects include the following properties: referencespace read only an xrreferencespace indicating the reference space that generated the event.
...And 5 more matches

Download Manager preferences - Archive of obsolete content
there are several preferences used by the download manager.
... preference description browser.download.antivirus.dontclean note: in gecko 1.9.1.
... in thunderbird the default value is 1; if the preference is missing, the value 0 is used.
...And 4 more matches

Syncing custom preferences - Archive of obsolete content
when preferences sync is enabled, firefox sync will synchronize preferences between the same application based on a whitelist.
... that means preferences between firefox and fennec, for instance, are never synced.
... to sync preferences between firefoxes, fennecs, thunderbirds, etc., ensure the prefs are whitelisted.
...And 4 more matches

Preferences system
this document describes toolkit's preferences system.
... using this system it is possible to create preferences windows that display and operate appropriately on various platforms (windows, macos x and gnome).
...reference information about them is available below: preferences system documentation: introduction: getting started | examples | troubleshooting reference: prefwindow | prefpane | preferences | preference | xul attributes use code for a typical preferences window may look like this: <prefwindow id="apppreferences" xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"> <prefpane id="pane1" label="&pane1.title;"> <preferences> <preference id="pref1" name="pref.name" type="bool"/> </preferences> ..
...And 4 more matches

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.
...And 4 more matches

nsIWeakReference
xpcom/base/nsiweakreference.idlscriptable this interface represents a proxy for an xpcom object.
... it allows a consumer to hold an indirect, non-owning reference to an xpcom object.
... inherits from: nsisupports last changed in gecko 0.9.9 an instance of nsiweakreference is a proxy object that cooperates with its referent to give clients a non-owning, non-dangling reference.
...And 4 more matches

customDBHeaders Preference
as you follow along the step-by-step guide in creating a custom column, you may want to consider a preference setting that exposes custom header data for use in a custom column within thunderbird's main view.
... the mailnews.customdbheaders preference will be our focus.
... 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.
...And 4 more matches

Preferences System
this document describes toolkit's preferences system.
... using this system it is possible to create preferences windows that display and operate appropriately on various platforms (windows, macos x and gnome).
...reference information about them is available below: preferences system documentation: introduction: getting started | examples | troubleshooting reference: prefwindow | prefpane | preferences | preference | xul attributes use code for a typical preferences window may look like this: <prefwindow id="apppreferences" xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"> <prefpane id="pane1" label="&pane1.title;"> <preferences> <preference id="pref1" name="pref.name" type="bool"/> </preferences> ..
...And 4 more matches

XRBoundedReferenceSpace.boundsGeometry - Web APIs
the read-only xrboundedreferencespace property boundsgeometry is an array of dompointreadonly objects which specifies the points making up a polygon inside which the viewer is allowed to move.
... syntax bounds = xrreferencespace.boundsgeometry; value the boundsgeometry property is an array of dompointreadonly objects, each of which defines one vertex in a polygon inside which the viewer is required to remain.
...in other words, the bounds are the physical limitations of the available space, shifted so that the reference space's bounds points are all defined relative to the xrboundedreferencespace's effective origiin.
...And 4 more matches

About the JavaScript reference - JavaScript
the javascript reference serves as a repository of facts about the javascript language.
...as you write javascript code, you'll refer to these pages often (thus the title "javascript reference").
...for the most part, this reference attempts to be environment-agnostic and does not target a web browser environment.
...And 4 more matches

Default Preferences - Archive of obsolete content
mozilla provides a simple way of shipping default settings by allowing default preferences.
... remember that preferences are held in two separate trees.
...default preferences are set similarly but inside an extension and use the pref() function.
...And 3 more matches

Accessibility API cross-reference
this cross-reference helps us see the difference between today's accessibility api's.
...this table is the start of a cross-reference, so we can spot the differences and similarities in the apis.
... fill out tagged pdf column (relevant documents from pdf association) add missing aria properties fill out events cross reference table use this info to expand mozilla's accessibility api coverage to include mac, so that we can start to freeze them talk about the fact that msaa uses one interface (iaccessible), wherease gnome accessibility uses a lot of different interfaces depending on the type of object go through the atk info and make sure it's up-to-date accessible roles description & notes msaa role (...
...And 3 more matches

Preferences API
preferences api allows you to save and read strings, numbers, booleans, and references to files to the preferences store.
... it is relatively easy to use, while providing a number of useful user and developer features, including support for default preferences, user overrides via user.js, and locking.
... you can also create a xul-based options window easily to allow user modify some preferences.
...And 3 more matches

XRBoundedReferenceSpace - Web APIs
the webxr device api's xrboundedreferencespace interface describes a virtual world reference space which has preset boundaries.
... this extends xrreferencespace, which describes an essentially unrestricted space around the viewer's position.
...see the article using bounded reference spaces for details on how bounded spaces work and why they're useful.
...And 3 more matches

XRReferenceSpaceEvent() - Web APIs
the xrreferencespaceevent() constructor is used to create a new xrreferencespaceevent object, which represents an event regarding the state of a webxr reference space object, xrreferencespace.
... syntax let refspaceevent = new xrreferencespaceevent(type, eventinitdict); parameters type a domstring indicating the event type which has occurred.
... eventinitdict an object based on the xrreferencespaceeventinit dictionary, containing data used to initialize the new event object.
...And 3 more matches

preferences/event-target - Archive of obsolete content
listen to changes to the preferences system in firefox.
...these are the same preferences that are exposed to users in the about:config page.
... preferences/service gives you full access to the preferences system.
...And 2 more matches

Components.utils.getWeakReference
this method was introduced in firefox 3 and is used for obtaining a weak reference for an object.
... to obtain the object reference, you have to call get() on the resulting object.
... syntax weakref = components.utils.getweakreference(obj); parameters obj the object for which to obtain a weak reference.
...And 2 more matches

XPCOM Interface Reference by grouping
01, 2010) list of mozilla interfaces as listed on the xpcom interface reference page where that page lists items by alphabetical sorting, this page attempts to group them by function.
...ortsdouble nsisupportsfloat nsisupportsid nsisupportsinterfacepointer nsisupportsprbool nsisupportsprimitive nsisupportsprint16 nsisupportsprint32 nsisupportsprint64 nsisupportspriority nsisupportsprtime nsisupportspruint16 nsisupportspruint32 nsisupportspruint64 nsisupportspruint8 nsisupportsstring nsisupportsvoid nsisupportsweakreference nsivariant do not use nsienumerator nsiinprocesscontentframemessagemanager nsiscriptableio nsixpcscriptable future nsixmlhttprequestupload obsolete nsixmlrpcclient nsixmlrpcfault security auth nsiauthmodule nsiauthprompt nsiauthpromptprovider nsiauthpromptwrapper nsiasyncverif...
... nsiprocess nsiprocess2 thread nsithread nsithreadeventfilter nsithreadinternal nsithreadmanager nsithreadobserver nsithreadpool nsithreadpoollistener nsitoolkit util nsiversioncomparator nsiweakreference nsifactory nsiinterfacerequestor nsijscid nsijsid nsijsiid nsimodule nsiobserver nsiobserverservice nsiproperties nsiproperty nsipropertybag nsipropertybag2 nsipropertyelement nsiserversocket nsiserversocketlistener nsiservicemanager nsisocket...
...And 2 more matches

CSSVariableReferenceValue - Web APIs
the cssvariablereferencevalue interface of the css typed object model api allows you to create a custom name for a built-in css value.
... constructor cssvariablereferencevalue.cssvariablereferencevalue() creates a new cssvariablereferencevalue object.
... properties cssvariablereferencevalue.variable returns the custom name passed to the constructor.
...And 2 more matches

RTCRtpTransceiver.setCodecPreferences() - Web APIs
the rtcrtptransceiver method setcodecpreferences() configures the transceiver's codecs given a list of rtcrtpcodeccapability objects specifying the new preferences for each codec.
... syntax rtcrtptransceiver.setcodecpreferences(codecs) parameters codecs an array of rtcrtpcodeccapability objects, in order of preference, each providing the parameters for one of the transceiver's supported codecs.
... a good approach to setting codec preferences is to first get the list of codecs that are actually supported, then modify that list to match what you want.
...And 2 more matches

SVGURIReference - Web APIs
the svgurireference interface is used to reflect the href attribute and the deprecated xlink:href attribute.
... <div id="interfacediagram" style="display: inline-block; position: relative; width: 100%; padding-bottom: 11.666666666666666%; vertical-align: middle; overflow: hidden;"><svg style="display: inline-block; position: absolute; top: 0; left: 0;" viewbox="-50 0 600 70" preserveaspectratio="xminymin meet"><a xlink:href="/docs/web/api/svgurireference" target="_top"><rect x="1" y="1" width="150" height="50" fill="#f4f7f8" stroke="#d4dde4" stroke-width="2px" /><text x="76" y="30" font-size="12px" font-family="consolas,monaco,andale mono,monospace" fill="#4d4e53" text-anchor="middle" alignment-baseline="middle">svgurireference</text></a></svg></div> a:hover text { fill: #0095dd; pointer-events: all;} properties svgurireference.href read only an svganimatedstring that represents the val...
... specifications specification status comment scalable vector graphics (svg) 2the definition of 'svgurireference' in that specification.
...And 2 more matches

XRReferenceSpaceEventInit - Web APIs
the xrreferencespaceeventinit dictionary is used when calling the xrreferencespaceevent() constructor to provide the values for its properties.
... properties referencespace the xrreferencespace from which the event originated.
... usage notes all of this dictionary's properties must have valid values set on them before calling the xrreferencespaceevent() constructor.
...And 2 more matches

ReferenceError: deprecated caller or arguments usage - JavaScript
message typeerror: 'arguments', 'callee' and 'caller' are restricted function properties and cannot be accessed in this context (edge) warning: referenceerror: deprecated caller usage (firefox) warning: referenceerror: deprecated arguments usage (firefox) typeerror: 'callee' and 'caller' cannot be accessed in strict mode.
... (safari) error type a strict-mode-only warning that a referenceerror occurred.
... examples deprecated function.caller or arguments.callee.caller function.caller and arguments.callee.caller are deprecated (see the reference articles for more information).
...And 2 more matches

ReferenceError: "x" is not defined - JavaScript
the javascript exception "variable is not defined" occurs when there is a non-existent variable referenced somewhere.
... message referenceerror: "x" is not defined error type referenceerror.
... there is a non-existent variable referenced somewhere.
...And 2 more matches

preference.type - Archive of obsolete content
« xul reference home type type: one of the values below the preference type which should be one of the following values.
...usually a checkbox would be connected to these preferences.
...in this situation the preference will save the path to a property file which contains the actual value of the preference.
...the file path will be stored in the preferences.

NPAPI plugin reference - Archive of obsolete content
npn_releaseobject decrements the reference count of the given npobject.
... if the reference count reaches 0, the npobject is deallocated by calling its deallocate function if one is provided; if one is not provided, free() is used.
... npn_retainobject increments the reference count of the given npobject.
... npobject npobject is a structure that holds a pointer to an npclass and an integer reference count, and possibly also implementation specific (i.e.

Object reference - MDN Web Docs Glossary: Definitions of Web-related terms
object references can be used exactly like the linked objects.
... the concept of object references becomes clear when assigning the same object to more than one property.
... rather than holding a copy of the object, each assigned property holds object references that link to the same object, so that when the object changes all properties referring to the object reflect the change.
... learn more general knowledge reference (computer science) on wikipedia ...

Reference - MDN Web Docs Glossary: Definitions of Web-related terms
in the context of objects, this is an object reference.
... on mdn, we could be talking about the javascript reference itself.
... in computing, a reference is a value that indirectly accesses data to retrieve a variable or a record in a computer's memory or other storage device.
... learn more general knowledge reference (computer science) on wikipedia ...

Midas editor module security preferences
to enable these functions, you must modify your browser preferences.
... warning: changing these preferences can leave your browser insecure, especially if you grant permission to untrusted sites.
... changing the preferences in firefox quit firefox.
... note: the preference is site as well as protocol specific.

XRReferenceSpaceEventInit.transform - Web APIs
the xrreferencespaceeventinit property transform indicates the position and orientation of the affected reference space's native origin after the changes the event represents are applied.
... syntax let eventinitdict = { referencespace: xrreferencespace, transform: xrrigidtransform }); value an xrrigidtransform object providing a transform that can be used to convert coordinates from the pre-event coordinate system to the post-event coordinate system.
... examples this simple snippet calls the constructor to create a new reference space event of type reset.
... let refspaceevent = new xrreferencespaceevent("reset", { referencespace: myrefspace, transform: mytransform }); specifications specification status comment webxr device apithe definition of 'xrreferencespaceeventinit.transform' in that specification.

ReferenceError() constructor - JavaScript
the referenceerror object represents an error when a non-existent variable is referenced.
... syntax new referenceerror([message[, filename[, linenumber]]]) parameters message optional optional.
... examples catching a referenceerror try { let a = undefinedvariable } catch (e) { console.log(e instanceof referenceerror) // true console.log(e.message) // "undefinedvariable is not defined" console.log(e.name) // "referenceerror" console.log(e.filename) // "scratchpad/1" console.log(e.linenumber) // 2 console.log(e.columnnumber) // 6 console.log(e.stack) // "@scratchpad/2:2:7\n" } creating a referenceerror try { throw new referenceerror('hel...
...lo', 'somefile.js', 10) } catch (e) { console.log(e instanceof referenceerror) // true console.log(e.message) // "hello" console.log(e.name) // "referenceerror" console.log(e.filename) // "somefile.js" console.log(e.linenumber) // 10 console.log(e.columnnumber) // 0 console.log(e.stack) // "@scratchpad/2:2:9\n" } specifications specification ecmascript (ecma-262)the definition of 'nativeerror constructor' in that specification.

Microsummary XML grammar reference - Archive of obsolete content
see the reference core_javascript_1.5_reference:global_objects:regexp for the details of the regular expression syntax valid for generators and the tutorial creating regular expressions for a microsummary generator for step by step instructions to writing regular expressions that match urls.
... if the <update> element does not include an interval attribute, firefox applies the interval specified by the browser.microsummary.updateinterval preference.
... if that preference has not been set, firefox applies its default update interval, which is 30 minutes.

preference-editable - Archive of obsolete content
« xul reference home preference-editable mozilla 1.8 type: boolean if true, the element may be used as one that modifies a preference in a prefwindow.
... the preference attribute may be used to connect to a preference element.
...the element should fire change, command, or input event when the value is changed so that the preference will update accordingly.

XUL Reference - Archive of obsolete content
« xul reference « alphabetical list of all xul elements action arrowscrollbox assign bbox binding bindings box broadcaster broadcasterset button browser checkbox caption clicktoscroll colorpicker column columns commandset command conditions content datepicker deck description dialog dialogheader dropmarker editor grid grippy groupbox hbox iframe image key keyset label listbox listcell listcol listcols listhead listheader listitem member menu menubar menuitem menulist menupopup menuseparator notification notificationbox observes overlay page panel param popupset preference preferences prefpane prefwindow progressmeter query queryset radio radiogroup resizer richlistbox richlistitem row rows rule scale script s...
...refox autocomplete) textbox (mozilla autocomplete) timepicker titlebar toolbar toolbarbutton toolbargrippy toolbaritem toolbarpalette toolbarseparator toolbarset toolbarspacer toolbarspring toolbox tooltip tree treecell treechildren treecol treecols treeitem treerow treeseparator triple vbox where window wizard wizardpage categorical list of all xul elements « xul reference « windows window wizard wizardpage titlebar window structure --- menus and popups --- toolbars toolbar toolbarbutton toolbargrippy toolbaritem toolbarpallete toolbarseperator toolbarspring tabs and grouping tab tabbox tabpanel tabpanels tabs controls --- text and images label caption image lists --- trees --- layout ...
... --- templates --- scripting --- helper elements other xul lists dialog overlay page window wizard wizardpage preference preferences prefpane prefwindow browser tabbrowser editor iframe titlebar resizer statusbar statusbarpanel dialogheader notification notificationbox menubar menu menuitem menuseparator menupopup panel tooltip popupset toolbar toolbarbutton toolbargrippy toolbaritem toolbarpalette toolbarseparator toolbarset toolbarspacer toolbarspring toolbox tabbox tabs tab tabpanels tabpanel groupbox caption separator spacer button checkbox colorpicker datepicker menulist progressmeter radio radiogroup scale splitter textbox textbox (firefox autocomplete) textbox (mozilla autocomplete) timepicker description...

Plug-in Development Overview - Gecko Plugin API Reference
the data can come from either an object element in an html file (where the object or embed element either specifies the mime type directly or references a file of that type), from a separate non-html file of that mime type, or from the server.
...it determines which plug-ins are installed and which types they support through a combination of user preferences that are private to the browser, the contents of the plug-ins directory, or the registry on windows.
... see the scripting plugins section of this reference for the details.

Cookies Preferences in Mozilla
these preferences apply to most mozilla products (including firefox and seamonkey), however they are application-specific, so not all of them may apply to you.
... to be at least 300 network.cookie.maxperhost default value: 50 configures the maximum amount of cookies to be stored per host valid range is from 0-65535, rfc 2109 and 2965 require this to be at least 20 network.cookie.disablecookieformailnews default value: true true = do not accept any cookies from within mailnews or from mail-style uris false = allow cookies in these situations this preference is applicable to all versions of seamonkey.
... new in thunderbird 3 this preference is applicable to thunderbird 3 and later.

JSAPI reference
the reference applies this versioning scheme retroactively starting with firefox 5.
...they have been removed in js 1.8.5, though js_enterlocalrootscope obsolete since javascript 1.8.5 js_leavelocalrootscope obsolete since javascript 1.8.5 js_leavelocalrootscopewithresult obsolete since javascript 1.8.5 js_forgetlocalroot obsolete since javascript 1.8.5 added in spidermonkey 1.8 if an object contains references to other gc things that are not stored in spidermonkey data structures ("slots"), it must implement the jstraceop hook to enable the garbage collector to traverse those references.
... js_getmethod obsolete since jsapi 23 js_getmethodbyid obsolete since jsapi 23 a spidermonkey extension allows a native function to return an lvalue—that is, a reference to a property of an object: js_setcallreturnvalue2 obsolete since javascript 1.8.5 id a jsid is an identifier for a property or method of an object.

XPCOM Interface Reference
this is a reference to the xpcom interfaces provided by the mozilla platform.
...sisupportsnsisupports proxiesnsisupportsarraynsisupportscstringnsisupportscharnsisupportsdoublensisupportsfloatnsisupportsidnsisupportsinterfacepointernsisupportsprboolnsisupportsprint16nsisupportsprint32nsisupportsprint64nsisupportsprtimensisupportspruint8nsisupportspruint16nsisupportspruint32nsisupportspruint64nsisupportsprimitivensisupportsprioritynsisupportsstringnsisupportsvoidnsisupportsweakreferencensisyncjpakensisyncmessagesendernsitxttohtmlconvnsitaggingservicensitaskbarpreviewnsitaskbarpreviewbuttonnsitaskbarpreviewcontrollernsitaskbarprogressnsitaskbartabpreviewnsitaskbarwindowpreviewnsitelemetrynsitextinputprocessornsitextinputprocessorcallbacknsitextinputprocessornotificationnsithreadnsithreadeventfilternsithreadinternalnsithreadmanagernsithreadobservernsithreadpoolnsithreadpoollistene...
...treeselectionnsitreeviewnsiurinsiurifixupnsiurifixupinfonsiurlnsiurlformatternsiurlparsernsiutf8converterservicensiutf8stringenumeratornsiuuidgeneratornsiupdatensiupdatechecklistenernsiupdatecheckernsiupdateitemnsiupdatemanagernsiupdatepatchnsiupdatepromptnsiupdatetimermanagernsiuploadchannelnsiuploadchannel2nsiurllistmanagercallbacknsiusercertpickernsiuserinfonsivariantnsiversioncomparatornsiweakreferencensiwebbrowsernsiwebbrowserchromensiwebbrowserchrome2nsiwebbrowserchrome3nsiwebbrowserchromefocusnsiwebbrowserfindnsiwebbrowserfindinframesnsiwebbrowserpersistnsiwebcontenthandlerregistrarnsiwebnavigationnsiwebnavigationinfonsiwebpagedescriptornsiwebprogressnsiwebprogresslistenernsiwebprogresslistener2nsiwebsocketchannelnsiwebsocketlistenernsiwebappssupportnsiwifiaccesspointnsiwifilistenernsiwifimo...

XPCOM reference
this reference describes the interfaces and functions provided by the xpcom library.
...ample, to request the 'show all threads' view use the constant:nsstaticmoduleinfothis data structure is used by ns_initxpcom3 to specify static xpcom modules.standard xpcom componentsthere are a number of components provided in the standard implementation of xpcom; these are as follows.xpcom glue classesthese "glue" classes are provided to make it easier to use xpcom from c++ code.xpcom interface referencethis is a reference to the xpcom interfaces provided by the mozilla platform.xpcom interface reference by groupingthis page lists the current (as of dec.
... 01, 2010) list of mozilla interfaces as listed on the xpcom interface reference page where that page lists items by alphabetical sorting, this page attempts to group them by function.

CSSVariableReferenceValue() - Web APIs
creates a new cssvariablereferencevalue.
... syntax new cssvariablereferencevalue(variable[, fallback]]) parameters variable a custom property name.
... specifications specification status comment css typed om level 1the definition of 'cssvariablereferencevalue()' in that specification.

NodeIterator.expandEntityReferences - Web APIs
the nodeiterator.expandentityreferences read-only property returns a boolean flag indicating whether or not the children of entity reference nodes are visible to the nodeiterator.
... if this value is false, the children of entity reference nodes (as well as all of their descendants) are rejected.
... syntax expand = nodeiterator.expandentityreferences; example var nodeiterator = document.createnodeiterator( document.body, nodefilter.show_element, { acceptnode: function(node) { return nodefilter.filter_accept; } }, false ); expand = nodeiterator.expandentityreferences; specifications specification status comment document object model (dom) level 2 traversal and range specificationthe definition of 'nodeiterator.expandentityreferences' in that specification.

TreeWalker.expandEntityReferences - Web APIs
the treewalker.expandentityreferences read-only property returns a boolean flag indicating whether or not the children of entity reference nodes are visible to the treewalker.
... if this value is false, the children of entity reference nodes (as well as all of their descendants) are rejected.
... syntax expand = treewalker.expandentityreferences; example var treewalker = document.createtreewalker( document.body, nodefilter.show_element, { acceptnode: function(node) { return nodefilter.filter_accept; } }, false ); expand = treewalker.expandentityreferences; specifications document object model (dom) level 2 traversal and range specificationthe definition of 'treewalker.expandentityreferences' in that specification.

XRReferenceSpaceEvent.transform - Web APIs
the read-only xrreferencespaceevent property transform indicates the position and orientation of the affected referencespace's native origin after the changes the event represents are applied.
... syntax let refspace = xrreferencespaceevent.transform; value an xrrigidtransform object providing a transform that can be used to convert coordinates from the pre-event coordinate system to the post-event coordinate system.
... xrreferencespace.addeventlistener("reset", event => { for (let obj of scene.objects) { mat4.multiply(obj.transform, obj.transform, event.transform); } }); specifications specification status comment webxr device apithe definition of 'xrreferencespaceevent.transform' in that specification.

CSS Properties Reference - CSS: Cascading Style Sheets
common css properties reference the following is a basic list of the most common css properties with the equivalent of the dom notation which is usually accessed from javascript: note: this list is incomplete.
... for more css properties see the main css reference and mozilla css extensions.
... the reference articles also include examples on how to use all the properties.

HTML reference - HTML: Hypertext Markup Language
this html reference describes all elements and attributes of html, including global attributes that apply to all elements.
... html element reference this page lists all the html elements, which are created using tags.
... html attribute reference elements in html have attributes; these are additional values that configure the elements or adjust their behavior in various ways to meet the criteria the users want.

Firefox user agent string reference - HTTP
starting in version 6, users can opt into using a geckoview-based focus for android with a hidden preference: it uses a geckoview ua string to advertise gecko compatibility.
...l mac os x 10.5; rv:10.0.1) gecko/20100101 firefox/10.0.1 seamonkey/2.7.1 seamonkey on linux mozilla/5.0 (x11; linux i686; rv:10.0.1) gecko/20100101 firefox/10.0.1 seamonkey/2.7.1 implementation notes for applications, vendors, and extensions prior to firefox 4 and gecko 2.0, it was possible for extensions to add user agent parts through the general.useragent.extra.identifier preferences, (see the obsolete user agent strings reference).
... see also firefox os user agent string (blog post w/bug 777710 reference) final user agent string for firefox 4 (blog post) recommendations on sniffing the ua string for cross-browser support window.navigator.useragent add android version to fennec ua string (bug 1169772) comments to mozilla.dev.platform ...

ReferenceError: assignment to undeclared variable "x" - JavaScript
message referenceerror: assignment to undeclared variable "x" (firefox) referenceerror: "x" is not defined (chrome) referenceerror: variable undefined in strict mode (edge) error type referenceerror warning in strict mode only.
... for more details and examples, see the var reference page.
... function foo() { 'use strict'; bar = true; } foo(); // referenceerror: assignment to undeclared variable bar valid cases to make "bar" a declared variable, you can add the var keyword in front of it.

JavaScript reference - JavaScript
read more about this reference.
... value properties infinity nan undefined globalthis function properties eval() isfinite() isnan() parsefloat() parseint() decodeuri() decodeuricomponent() encodeuri() encodeuricomponent() fundamental objects object function boolean symbol error objects error aggregateerror evalerror internalerror rangeerror referenceerror syntaxerror typeerror urierror numbers & dates number bigint math date text processing string regexp indexed collections array int8array uint8array uint8clampedarray int16array uint16array int32array uint32array float32array float64array bigint64array biguint64array keyed collections map set weakmap weakset structu...
... arguments arrow functions default parameters rest parameters additional reference pages lexical grammar data types and data structures strict mode deprecated features ...

Web technology reference
introduction to html | learn html | html5 | developer guide | element reference | reference css — styling the web cascading style sheets are used to describe the appearance of web content.
... introduction to css | getting started with css | learn css | common css questions | reference javascript — dynamic client-side scripting the javascript programming language is used to add interactivity and other dynamic features to web sites.
... learn javascript | developer guide | reference ...

Dehydra Object Reference - Archive of obsolete content
.fieldof variable object provides the object being dereferenced, in the ast system.
... pointer and reference types property type description .ispointer boolean flag .isreference boolean flag .type type object the type this points to or references array type property type description .isarray boolean flag .max integer or normal fixed-size arrays, the index of the largest element of the array.

preference.name - Archive of obsolete content
« xul reference home name type: string the name of the preference to change.
... for example, the browser's home page is set with the preference browser.startup.homepage.

preference - Archive of obsolete content
« xul reference home preference type: id connects the element to a corresponding preference.
...more information is available in the preferences system article.

OLD SSL Reference
old ssl reference we are migrating this ssl reference into the format described in the mdn style guide.
... upgraded documentation may be found in the current nss reference ssl reference newsgroup: mozilla.dev.tech.crypto writer: sean cotter manager: wan-teh chang chapter 1 overview of an ssl application ssl and related apis allow compliant applications to configure sockets for authenticated, tamper-proof, and encrypted communications.

CSSVariableReferenceValue.fallback - Web APIs
the fallback read-only property of the cssvariablereferencevalue interface returns the custom property fallback value of the cssvariablereferencevalue.
... syntax var fallback = cssvariablereferencevalue.fallback; value a cssunparsedvalue.

CSSVariableReferenceValue.variable - Web APIs
the variable property of the cssvariablereferencevalue interface returns the custom property name of the cssvariablereferencevalue.
... syntax var variable = cssvariablereferencevalue.variable; value a usvstring beginning with -- (that is, a custom property name).

NodeIterator.pointerBeforeReferenceNode - Web APIs
the nodeiterator.pointerbeforereferencenode read-only property returns a boolean flag that indicates whether the nodefilter is anchored before (if this value is true) or after (if this value is false) the anchor node indicated by the nodeiterator.referencenode property.
... syntax flag = nodeiterator.pointerbeforereferencenode; example var nodeiterator = document.createnodeiterator( document.body, nodefilter.show_element, { acceptnode: function(node) { return nodefilter.filter_accept; } }, false ); flag = nodeiterator.pointerbeforereferencenode; specifications specification status comment domthe definition of 'nodeiterator.pointerbeforereferencenode' in that specification.

NodeIterator.referenceNode - Web APIs
the nodeiterator.referencenode read-only returns the node to which the iterator is anchored; as new nodes are inserted, the iterator remains anchored to the reference node as specified by this property.
... syntax node = nodeiterator.referencenode; example var nodeiterator = document.createnodeiterator( document.body, nodefilter.show_element, { acceptnode: function(node) { return nodefilter.filter_accept; } }, false ); node = nodeiterator.referencenode; specifications specification status comment domthe definition of 'nodeiterator.referencenode' in that specification.

XRReferenceSpace.onreset - Web APIs
the xrreferencespace interface's onreset event handler property can be set to a function which is called when the xrreferencespace receives a reset event, signaling that the xr device has experienced a discontinuity large enough to require that the position and/or orientation of the origin be significantly altered to compensate.
... syntax xrreferencespace.onreset = eventhandler; eventhandler = xrreferencespace.onreset; value an event handler function which will be called whenever the reset event is received by the xrreferencespace.

CSS reference - CSS: Cascading Style Sheets
use this css reference to browse an alphabetical index of all of the standard css properties, pseudo-classes, pseudo-elements, data types, and at-rules.
...also included is a brief dom-css / cssom reference.

HTML attribute reference - HTML: Hypertext Markup Language
codebase <applet> this attribute gives the absolute or relative url of the directory where applets' .class files referenced by the code attribute are stored.
... default <track> indicates that the track should be enabled unless the user's preferences indicate something different.

HTML elements reference - HTML: Hypertext Markup Language
<cite> the html citation element (<cite>) is used to describe a reference to a cited creative work, and must include the title of that work.
... <mark> the html mark text element (<mark>) represents text which is marked or highlighted for reference or notation purposes, due to the marked passage's relevance or importance in the enclosing context.

ReferenceError: can't access lexical declaration`X' before initialization - JavaScript
message referenceerror: use before delaration (edge) referenceerror: can't access lexical declaration `x' before initialization (firefox) referenceerror: 'x' is not defined (chrome) error type referenceerror what went wrong?
... function test() { let foo = 33; if (true) { let foo = (foo + 55); // referenceerror: can't access lexical // declaration `foo' before initialization } } test(); valid cases to change "foo" inside the if statement, you need to remove the let that causes the redeclaration.

ReferenceError: invalid assignment left-hand side - JavaScript
message referenceerror: invalid assignment left-hand side error type referenceerror.
... examples typical invalid assignments if (math.pi = 3 || math.pi = 4) { console.log('no way!'); } // referenceerror: invalid assignment left-hand side var str = 'hello, ' += 'is it me ' += 'you\'re looking for?'; // referenceerror: invalid assignment left-hand side in the if statement, you want to use a comparison operator ("=="), and for the string concatenation, the plus ("+") operator is needed.

SVG element reference - SVG: Scalable Vector Graphics
« svg / svg attribute reference » svg drawings and images are created using a wide array of elements which are dedicated to the construction, drawing, and layout of vector images and diagrams.
... here you'll find reference documentation for each of the svg elements.

Dehydra Function Reference - Archive of obsolete content
see the dehydra object reference for details on the available object properties.

String Quick Reference - Archive of obsolete content
old way: use nsstring& and nscstring& void mymethod(const nsstring& input, nsstring& output); new way: use nsastring& and nsacstring& void mymethod(const nsastring& input, nsastring& output); substrings what: get direct references to string fragments why: avoid making multiple copies of the string old way: use a bunch of nsautostrings, and use left(), right() and mid() to grab a segment of a string: // get an 8-character string starting at the 4th position nsautostring leftside; str.left(leftside, 12); nsautostring middle; leftside.right(middle, 8); new way: use substring() to grab a direct reference to those characters...

XBL 1.0 Reference - Archive of obsolete content
notes.html notes.xml notes.css view this example download all files (.zip archive) need to ask to adjust the server - it gives "access denied" for zip files (?) references initial xbl 1.0 proposal submitted as a note to w3c (does not reflect mozilla implementation, nor future plans) xbl 2.0 project original document information last updated date: april 24, 2006 ...

preferenceForElement - Archive of obsolete content
« xul reference home preferenceforelement( uielement ) return type: preference element returns the preference element to which a user interface element is attached.

browser.preferences - Archive of obsolete content
« xul reference preferences type: nsiprefservice this read-only property contains an nsipref object for getting and setting user preferences.

preferenceElements - Archive of obsolete content
« xul reference preferenceelements type: dom nodelist holds a list of the ui elements in the pane that are attached to preferences.

preferencePanes - Archive of obsolete content
« xul reference preferencepanes type: dom nodelist holds a list of all the prefpane elements in the window.

preferences - Archive of obsolete content
« xul reference see also browser.preferences preference.preferences prefpane.preferences ...

prefpane.preferences - Archive of obsolete content
« xul reference preferences type: dom nodelist holds a list of the preference elements in the pane.

Accessibility/XUL Accessibility Reference - Archive of obsolete content
not expose anything to screen readers/have no discovered accessibility issues yet: arrowscrollbox bbox box grippy hbox menuseparator overlay page script spacer splitter stringbundle stringbundleset vbox window elements not processed yet: action binding bindings broadcaster broadcasterset conditions content dialog dialogheader editor listcell member observes preference preferences prefpane prefwindow resizer richlistbox richlistitem resizer rule scrollbar scrollbox scrollcorner separator template textnode titlebar toolbar toolbarbutton toolbargrippy toolbaritem toolbarpalette toolbarseparator toolbarset toolbarspacer toolbarspring toolbox tooltip treeseparator triple wizard wizardpage cases to revisit: ...

Archived JavaScript Reference - Archive of obsolete content
you can use the more general proxy object instead.object.prototype.__count__the __count__ property used to store the count of enumerable properties on the object, but it has been removed.object.prototype.__nosuchmethod__the __nosuchmethod__ property used to reference a function to be executed when a non-existent method is called on an object, but this function is no longer available.object.prototype.__parent__the __parent__ property used to point to an object's context, but it has been removed.object.prototype.eval()the object.eval() method used to evaluate a string of javascript code in the context of an object, however, this method has been removed.object.p...

XForms API Reference - Archive of obsolete content
this page is the beginning of the xforms api reference.

Chrome-only CSS reference
row(hover)the ::-moz-tree-row(hover) css pseudo-class will match an element if the mouse cursor is presently hovering over a tree row.::-moz-tree-separatoractivated by the properties attribute.::-moz-tree-twistyactivated by the properties attribute.css -moz-bool-pref() @supports functionthe -moz-bool-pref() @supports condition is available to gecko chrome and ua stylesheets to check if a boolean preference is enabled.css <display-xul> component</display-xul>firefox supports the following -moz- prefixed xul display values:overflow-clip-boxthe overflow-clip-box css property specifies relative to which box the clipping happens when there is an overflow.

getWeakReference
this content is now available at nsisupportsweakreference.getweakreference().

js-ctypes reference
ctypes reference the ctypes object is the base of the ctypes api.

Gecko Plugin API Reference - Plugins
nderstanding the plug-in api plug-ins and platform independence windowed and windowless plug-ins the default plug-in using html to display plug-ins plug-in display modes using the object element for plug-in display nesting rules for html elements using the appropriate attributes using the embed element for plug-in display using custom embed attributes plug-in references plug-in development overview writing plug-ins registering plug-ins ms windows unix mac os x drawing a plug-in instance handling memory sending and receiving streams working with urls getting version and ui information displaying messages on the status line making plug-ins scriptable building plug-ins building, platforms, and compilers building carbonized p...

Document.createEntityReference() - Web APIs
specifications createentityreference ...

Index - Event reference
found 2 pages: # page tags and summary 1 event reference event, overview, reference dom events are sent to notify code of interesting things that have taken place.

JavaScript error reference - JavaScript
error: permission denied to access property "x"internalerror: too much recursionrangeerror: argument is not a valid code pointrangeerror: invalid array lengthrangeerror: invalid daterangeerror: precision is out of rangerangeerror: radix must be an integerrangeerror: repeat count must be less than infinityrangeerror: repeat count must be non-negativereferenceerror: "x" is not definedreferenceerror: assignment to undeclared variable "x"referenceerror: can't access lexical declaration "x" before initializationreferenceerror: deprecated caller or arguments usagereferenceerror: invalid assignment left-hand sidereferenceerror: reference to undefined property "x"syntaxerror: "0"-prefixed octal literals and octal escape seq.

SVG Attribute reference - SVG: Scalable Vector Graphics
below is a list of all of the attributes available in svg along with links to reference documentation to help you learn which elements support them and how they work.

XSLT elements reference - XSLT: Extensible Stylesheet Language Transformations
xslt/xpath reference: xslt elements, exslt functions, xpath functions, xpath axes there are two types of elements discussed here: top-level elements and instructions.

Index - Web APIs
found 5328 pages: # page tags and summary 1 web apis api, dom, landing, reference, web when writing code for the web, there are a large number of web apis available.
... 2 angle_instanced_arrays api, reference, webgl, webgl extension the angle_instanced_arrays extension is part of the webgl api and allows to draw the same object, or groups of similar objects multiple times, if they share the same vertex data, primitive count and type.
... 3 angle_instanced_arrays.drawarraysinstancedangle() angle_instanced_arrays, api, method, reference, webgl, webgl extension the angle_instanced_arrays.drawarraysinstancedangle() method of the webgl api renders primitives from array data like the gl.drawarrays() method.
...And 4421 more matches

Index - Archive of obsolete content
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.
... 41 addon-page add-on sdk, add-ons, extensions, obsolete, reference create a page that does not contain navigational elements.
... 58 simple-prefs add-on sdk store preferences across application restarts.
...And 1147 more matches

Index - Archive of obsolete content
2 &lt;statusbarpanel&gt; deprecated, xul, xul elements, xul reference an individual element of a statusbar.
... 4 accessibility/xul accessibility reference accessibility, xul this table is designed to show how to expose text properly for various xul element types.
... 5 attribute (xul) xul attributes, xul reference no summary!
...And 954 more matches

Index
31 components.utils.sandbox needsmarkupwork, reference, référence(2), xpcom:language bindings, xpconnect components.utils.sandbox is used to create a sandbox object for use with evalinsandbox().
...it returns a reference to the clone: 33 components.utils.createobjectin add-ons, developing mozilla, extensions, javascript, reference, référence(2), xpcom:language bindings, xpconnect components.utils.createobjectin creates a new javascript object in the scope of the specified object's compartment.
... 36 components.utils.exportfunction api, add-ons, components, extensions, language bindings, method, mozilla, non-standard, reference, webextensions, xpcom this function provides a safe way to expose a function from a privileged scope to a less-privileged scope.
...And 760 more matches

Index
17 jsapi reference needscontent, spidermonkey js::deflatestringtoutf8buffer 18 boolean_to_jsval jsapi reference, obsolete, spidermonkey boolean_to_jsval converts a bool argument, b, to a boolean jsval.
... 19 double_to_jsval jsapi reference, obsolete, spidermonkey double_to_jsval is the inverse of js::tonumber.
... 20 int_fits_in_jsval jsapi reference, obsolete, spidermonkey determines if a specified c integer value, i, lies within the range allowed for integer jsvals.
...And 488 more matches

HTML documentation index - HTML: Hypertext Markup Language
2 allowing cross-origin use of images and canvas advanced, cors, canvas, html, image, reference, security, storage, data html provides a crossorigin attribute for images that, in combination with an appropriate cors header, allows images defined by the <img> element that are loaded from foreign origins to be used in a <canvas> as if they had been loaded from the current origin.
... 6 date and time formats used in html date, element, format, html, iso 8601, input, reference, string, time, week, datetime, datetime-local, del, ins, month, month-year, week-year certain html elements use date and/or time values.
... 7 global attributes attribute, html, reference, web global attributes are attributes common to all html elements; they can be used on all elements, though they may have no effect on some elements.
...And 214 more matches

HTTP Index - HTTP
found 277 pages: # page tags and summary 1 http http, hypertext, reference, tcp/ip, web, web development, l10n:priority hypertext transfer protocol (http) is an application-layer protocol for transmitting hypermedia documents, such as html.
... 10 incomplete list of mime types audio, file types, files, http, mime, mime types, php, reference, text, types, video here is a list of mime types, associated by type of documents, ordered by their common extensions.
... 16 content security policy (csp) csp, content security policy, reference, security content security policy (csp) is an added layer of security that helps to detect and mitigate certain types of attacks, including cross site scripting (xss) and data injection attacks.
...And 182 more matches

Index - HTTP
found 122 pages: # page tags and summary 1 http headers http, http header, networking, overview, reference http headers allow the client and the server to pass additional information with the request or the response.
... 2 accept http, http header, reference, request header the accept request http header advertises which content types, expressed as mime types, the client is able to understand.
... 3 accept-charset content negotiation, http, http header, reference, request header the accept-charset request http header advertises which character set the client is able to understand.
...And 102 more matches

Component; nsIPrefBranch
component: nsiprefbranch modules/libpref/public/nsiprefbranch.idlscriptable this interface is used to manipulate the preferences data.
... this object may be obtained from the preferences service (nsiprefservice) and used to get and set default and/or user preferences across the application.
... inherits from: nsisupports last changed in gecko 58 (firefox 58 / thunderbird 58 / seamonkey 2.55) this object is created with a "root" value which describes the base point in the preferences "tree" from which this "branch" stems.
...And 98 more matches

SVG documentation index - SVG: Scalable Vector Graphics
found 383 pages: # page tags and summary 1 svg: scalable vector graphics 2d graphics, graphics, icons, images, reference, responsive design, svg, scalable graphics, scalable images, vector graphics, web, l10n:priority scalable vector graphics (svg) are an xml-based markup language for describing two-dimensional based vector graphics.xml 2 applying svg effects to html content css, guide, html, svg modern browsers support using svg within css styles to apply graphical effects to html content.
... 8 other resources reference, svg here is a list of additional resources on svg: 9 project svg no summary!
... 13 svg attribute reference drawing, landing, needshelp, overview, responsive design, svg, svg attribute, svg reference, vector graphics svg elements can be modified using attributes that specify details about exactly how the element should be handled or rendered.
...And 82 more matches

nsIContentPrefService2
dom/interfaces/base/nsicontentprefservice2.idlscriptable asynchronous api for content preferences 1.0 66 introduced gecko 20.0 inherits from: nsisupports last changed in gecko 20.0 (firefox 20.0 / thunderbird 20.0 / seamonkey 2.17) description content preferences allow the application to associate arbitrary data, or "preferences", with specific domains, or web "content".
... specifically, a content preference is a structure with three values: a domain with which the preference is associated, a name that identifies the preference within its domain, and a value.
... (see nsicontentpref below.) for example, if you want to remember the user's preference for a certain zoom level on www.mozilla.org pages, you might store a preference whose domain is "www.mozilla.org", whose name is "zoomlevel", and whose value is the numeric zoom level.
...And 63 more matches

Index - MDN Web Docs Glossary: Definitions of Web-related terms
12 accessibility tree (aom) aom, accessibility, dom, glossary, reference the accessibility tree, or accessibility object model (aom), contains accessibility-related information for most html elements.
... 30 bigint bigint, glossary, javascript, reference, arbitrary precision format in javascript, bigint is a numeric data type that can represent integers in the arbitrary precision format.
... 41 brotli brotli, glossary, reference, web performance, compression brotli is a general-purpose lossless compression algorithm.
...And 44 more matches

nsIContentPrefService
provides a way for extensions and browser code to save preferences for specific websites.
... preferences are saved as key/value pairs on a per-website basis.
...ng aname, in nsicontentprefobserver aobserver); void removepref(in nsivariant agroup, in astring aname); void removeprefsbyname(in astring aname); void setpref(in nsivariant agroup, in astring aname, in nsivariant avalue); attributes attribute type description dbconnection mozistorageconnection the database connection to the content preferences database.
...And 39 more matches

Index - XPath
2 axes transforming_xml_with_xslt, xpath, xpath_reference, xslt, xslt_reference for further information on using xpath expressions, please see the for further reading section at the end of transforming xml with xslt document.
... 16 comparison of css selectors and xpath css, draft, needscontent, reference, selectors, xpath this article seeks to document the difference between css selectors and xpath for web developers to be able to better choose the right tool for the right job.
... 17 functions transforming_xml_with_xslt, xpath, xpath_reference, xslt, xslt_reference no summary!
...And 38 more matches

Index - XSLT: Extensible Stylesheet Language Transformations
xslt/xpath reference: xslt elements, exslt functions, xpath functions, xpath axes found 54 pages: # page tags and summary 1 xslt: extensible stylesheet language transformations landing, web, xslt extensible stylesheet language transformations (xslt) is an xml-based language used, in conjunction with specialized processing software, for the transformation of xml documents.
... 3 index index, reference, xslt found 54 pages: 4 pi parameters xslt no summary!
... 8 interface list needscontent, reference see xsltprocessor in the web api documentation section.
...And 38 more matches

Experimental features in Firefox
nightly 53 yes developer edition 53 no beta 53 no release 53 no preference name dom.dialog_element.enabled global attribute: inputmode our implementation of the inputmode global attribute has been updated as per the whatwg spec (bug 1509527), but we still need to make other changes too, like making it available on contenteditable content.
... nightly 75 yes developer edition 75 no beta 75 no release 75 no preference name dom.forms.inputmode <link rel="preload"> the <link> element's rel attribute is intended to help provide performance gains by letting you download resources earlier in the page lifecycle, ensuring that they're available earlier and are less likely to block page rendering.
... nightly 78 yes developer edition 78 yes beta 78 yes release 78 no preference name network.preload css display stray control characters in css as hex boxes this feature renders control characters (unicode category cc) other than tab (u+0009), line feed (u+000a), form feed (u+000c), and carriage return (u+000d) as a hexbox when they are not expected.
...And 37 more matches

MMgc - Archive of obsolete content
you can qualify references to classes in the library; for example: mmgc::gc, mmgc::gcfinalizedobject.
... each instance manages its own set of objects; objects are not allowed to reference objects in other gc instances.
...memory allocated with alloc doesn't need to be explicitly freed, although it can be freed with free if it is known that there are no other references to it.
...And 36 more matches

simple-prefs - Archive of obsolete content
experimental store preferences across application restarts.
... you can store booleans, integers, and string values, and users can configure these preferences in the add-ons manager.
... this gives users a consistent way to access and modify preferences across different add-ons.
...And 35 more matches

Chapter 5: Let's build a Firefox extension - Archive of obsolete content
change your preferences for more efficient development before you get to work developing your extension, you’ll want to change some of your firefox preferences.
... preference description value nglayout.debug.disable_xul_cache (not present in firefox 3.5+) ordinarily, firefox will cache xul documents after they have been read in once, to speed subsequent displays.
... true javascript.options.strict (present in firefox 3.5+) enforces strict error output from javascript true table 1: preferences to set for developing extensions to make these changes, start your development profile, type about:config into firefox’s location bar and open the preferences window; find the preferences listed in table 1 and double-click on them to set them accordingly.
...And 33 more matches

MCD, Mission Control Desktop, AKA AutoConfig - Archive of obsolete content
it's mission is to enable completely automatic configuration of mozilla's apps preferences based on users properties either retrieved from system environement variables or on an organisation ldap directory.
... objective the objective is to provide users with a mailer agent, a web browser, and a news reader which are automatically configured (preferences) at startup to the current user connected on the computer.
... instead of configuring end user individual preferences files (~/.mozilla/default/randomdir/prefs.js) we now use a centralized default set of preferences.
...And 33 more matches

XUL controls - Archive of obsolete content
for more reference information, see the xul reference.
... button reference <button type="menu"> a button that has a drop down menu attached to it.
... button reference related elements: menupopup menuitem <button type="menu-button"> a button that that has a separate arrow button with a menu attached to it.
...And 33 more matches

Using the Multiple Accounts API
by alec flett alecf@flett.org structure servers identities storage creating new accounts smtp servers appendix a: listing of all preferences and properties structure the account system consists of: the account manager (nsimsgaccountmanager): there is a single account manager in the the client, which maintains the list of accounts, servers, etc.
... in the above example, the list of identities would be as follows: alec flett <alecf@mywork.com>) alec flett <alecf@myisp.com>) alec flett <alecfnospam@myisp.com>) relevant api calls: nsimsgaccount.identities nsimsgaccountmanager.allservers: a list of all servers across all accounts storage the accounts are stored in the preferences.
...the keys are also used to decide the name of each of the preferences that hold the object's data.
...And 32 more matches

MathML documentation index - MathML
found 40 pages: # page tags and summary 1 mathml landing, mathml, reference, web, xml mathematical markup language (mathml) is a dialect of xml for describing mathematical notation and capturing both its structure and content.
... 5 proving the pythagorean theorem beginner, example, guide, html5 math, math education, mathml, needsbeginnerupdate we will now prove the pythagorean theorem: 6 mathml attribute reference mathml, mathml reference this is an alphabetical list of mathml attributes.
... 7 values guide, mathml, mathml reference several mathml presentation elements have attributes that accept length values used for size or spacing.
...And 31 more matches

xlink:href - SVG: Scalable Vector Graphics
the xlink:href attribute defines a reference to a resource as a reference iri.
...<font-face-uri>, <glyphref>, <image>, <lineargradient>, <mpath>, <pattern>, <radialgradient>, <script>, <set>, <textpath>, <tref>, and <use>} html, body, svg { height: 100%; } <svg viewbox="0 0 160 40" xmlns="http://www.w3.org/2000/svg"> <a xlink:href="https://developer.mozilla.org/"><text x="10" y="25">mdn web docs</text></a> </svg> a for <a>, xlink:href defines the location of the referenced object.
... value <iri> default value none animatable yes altglyph for <altglyph>, xlink:href defines the reference either to a <glyph> element in an svg document fragment or to an <altglyphdef> element.
...And 28 more matches

BluetoothCharacteristicProperties - Web APIs
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.
... 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).
...And 27 more matches

Accessibility documentation index - Accessibility
here's where to file bugs: 13 using aria: roles, states, and properties aria, accessibility, overview, reference aria defines semantics that can be applied to elements, with these divided into roles (defining a type of user interface element) and states and properties that are supported by a role.
... 21 using the aria-label attribute aria, accessibility, codingscripting, html, needscontent, reference, référence(2), agent, aria-label, user, useragent the aria-label attribute is used to define a string that labels the current element.
... 41 wai-aria roles aria, aria roles, accessibility, reference, rôles this page lists reference pages covering all the wai-aria roles discussed on mdn.
...And 26 more matches

prefwindow - Archive of obsolete content
« xul reference home [ examples | attributes | properties | methods | related ] a specialized window used for preference dialogs.
...a row of buttons appears across the preference dialog, one for each prefpane.
... each pane will usually group together a set of related preferences.
...And 25 more matches

Index
those handles are reference counted.
...the application should always call the appropriate dereference (destroy) functions once a handle is no longer needed.
...such an operation might fail at runtime if data elements are still being referenced.
...And 25 more matches

BasicCardResponse - Web APIs
chrome 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) and the dom.payments.request.supportedregions preference (needs to be set to a comma-delineated list of one or more 2-character iso country codes indicating the countries in which to support payments (for example, us,ca.).
... to change preferences in firefox, visit about:config.ie no support noopera no support nosafari ?
...port nochrome android full support 57firefox android 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 the dom.payments.request.supportedregions preference (needs to be set to a comma-delineated list of one or more 2-character iso country codes indicating the countries in which to support payments (for example, us,ca.).
...And 25 more matches

Window.open() - Web APIs
the returned reference can be used to access properties and methods of the new window as long as it complies with same-origin policy security requirements.
...the window creation and the loading of the referenced resource are done asynchronously.
... examples var windowobjectreference; var windowfeatures = "menubar=yes,location=yes,resizable=yes,scrollbars=yes,status=yes"; function openrequestedpopup() { windowobjectreference = window.open("http://www.cnn.com/", "cnn_windowname", windowfeatures); } var windowobjectreference; function openrequestedpopup() { windowobjectreference = window.open( "http://www.domainname.ext/path/imagefile.png", "descriptivewindowname", "resizable,scrollbars,status" ); } if a window with the name already exists, then url is loaded into the existing window.
...And 22 more matches

Window - Web APIs
many of these are documented in the javascript reference and the dom reference.
... window.console read only returns a reference to the console object which provides access to the browser's debugging console.
... window.customelements read only returns a reference to the customelementregistry object, which can be used to register new custom elements and get information about previously registered custom elements.
...And 22 more matches

Memory Management - JavaScript
references the main concept that garbage collection algorithms rely on is the concept of reference.
... within the context of memory management, an object is said to reference another object if the former has access to the latter (either implicitly or explicitly).
... for instance, a javascript object has a reference to its prototype (implicit reference) and to its properties values (explicit reference).
...And 22 more matches

Getting Started Guide
if you're already familiar with nscomptrs, then you might want to skip ahead to the reference manual or the faq.
... xpcom basics: ownership and reference counting this is a quick refresher on some fundamental issues of xpcom.
...they reference it only through a pointer to an `interface', i.e., the static type of the pointer is a pointer to an abstract base class, the actual object pointed to is a class derived from that abstract base class.
...And 21 more matches

BluetoothRemoteGATTDescriptor - Web APIs
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 ≤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).
...And 21 more matches

sslfnc.html
this page is part of the ssl reference that we are migrating into the format described in the mdn style guide.
... upgraded documentation may be found in the current nss reference ssl functions chapter 4 ssl functions this chapter describes the core ssl functions.
... description ssl_cipherprefgetdefault gets the application default preference for the specified ssl2, ssl3, or tls cipher a cipher suite is used only if the policy allows it and the preference for it is set to pr_true.
...And 20 more matches

Starting up and shutting down a WebXR session - Web APIs
the global variable webxrpolyfill is used only to retain a reference to the polyfill in order to ensure that it remains available until you no longer need it.
...currently, the only configurable aspect of the session is which of the reference spaces should be used to represent the world's coordinate system.
... you can specify either required or optional reference spaces in order to obtain a session compatible with the reference spaces you need or prefer to use.
...And 20 more matches

Movement, orientation, and motion: A WebXR example - Web APIs
setup and utility functions next, we declare the variables and constants used throughout the application, starting with those used to store webgl and webxr specific information: let polyfill = null; let xrsession = null; let xrinputsources = null; let xrreferencespace = null; let xrbutton = null; let gl = null; let animationframerequestid = 0; let shaderprogram = null; let programinfo = null; let buffers = null; let texture = null; let mouseyaw = 0; let mousepitch = 0; this is followed by a set of constants, mostly to contain various vectors and matrices used while rendering the scene.
...inverseorientation is a quaternion which will be used to represent the rotation to apply to the reference space for the object in the frame being rendered.
... the last four variables declared are storage for references to the <div> elements into which we'll output the matrices when we want to show them to the user.
...And 19 more matches

nsIXULTemplateQueryProcessor
content/xul/templates/public/nsixultemplatequeryprocessor.idlscriptable a query processor takes a template query and generates results for it given a datasource and a reference point.
... 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.
...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.
...And 18 more matches

EventTarget.addEventListener() - Web APIs
(see memory issues, below.) the value of "this" within the handler it is often desirable to reference the element on which the event handler was fired, such as when using a generic handler for a set of similar elements.
... if attaching a handler function to an element using addeventlistener(), the value of this inside the handler is a reference to the element.
...g: `this` is not `my_element` console.log(e.currenttarget === this) // logs `false` }) if an event handler (for example, onclick) is specified on an element in the html source, the javascript code in the attribute value is effectively wrapped in a handler function that binds the value of this in a manner consistent with the addeventlistener(); an occurrence of this within the code represents a reference to the element.
...And 18 more matches

Avoiding leaks in JavaScript XPCOM components
there are no calls to malloc and free and no reference counting.
...but it's even easier in this environment because some of the objects you're dealing with are reference-counted behind the scenes.
... programs should not dereference pointers pointing to memory that has been returned to the heap (and potentially reused).
...And 17 more matches

nsIPrefBranch2
method overview void addobserver(in string adomain, in nsiobserver aobserver, in boolean aholdweak); void removeobserver(in string adomain, in nsiobserver aobserver); methods addobserver() add a preference change observer.
... on preference changes, the following arguments will be passed to nsiobserver.observe(): asubject - the nsiprefbranch object (this).
... atopic - the string defined by ns_prefbranch_prefchange_topic_id adata - the name of the preference which has changed, relative to the "root" of the asubject branch.
...And 17 more matches

Fullscreen API - Web APIs
≤79alternate name alternate name uses the non-standard name: webkitisfullscreenfirefox full support 64 full support 64 no support 49 — 65disabled disabled from version 49 until version 65 (exclusive): this feature is behind the full-screen-api.unprefix.enabled preference (needs to be set to true).
... to change preferences in firefox, visit about:config.
... 18alternate name alternate name uses the non-standard name: webkitisfullscreenfirefox android full support 64 full support 64 no support 49 — 65disabled disabled from version 49 until version 65 (exclusive): this feature is behind the full-screen-api.unprefix.enabled preference (needs to be set to true).
...And 17 more matches

An Overview of XPCOM
object ownership in xpcom, since components may implement any number of different interfaces, components must be reference counted.
... when a component gets created, an integer inside the component tracks the number of clients who have an interface to the components -- also known as the reference count.
... the reference count is incremented automatically when the client instantiates the component; over the course of the component's life, the reference count goes up and down.
...And 16 more matches

nsIPrefService
modules/libpref/public/nsiprefservice.idlscriptable this interface is the main entry point into the back end preferences management library.
... the preference service is directly responsible for the management of the preferences files and also facilitates access to the preference branch object which allows the direct manipulation of the preferences themselves.
... inherits from: nsisupports last changed in gecko 1.7 method overview nsiprefbranch getbranch(in string aprefroot); nsiprefbranch getdefaultbranch(in string aprefroot); void readuserprefs(in nsifile afile); void resetprefs(); void resetuserprefs(); void savepreffile(in nsifile afile); methods getbranch() call to get a preferences "branch" which accesses user preference data.
...And 16 more matches

Basic Shapes - CSS: Cascading Style Sheets
before looking at the shapes, it is worth understanding two pieces of information that go together to make these shapes possible: the <basic-shape> type the reference box the <basic-shape> type the <basic-shape> type is used as the value for all of our basic shapes.
... the reference box understanding the reference box used by css shapes is important when using basic shapes, as it defines each shape's coordinate system.
... you have already met the reference box in the guide on creating shapes from box values, which directly uses the reference box to create the shape.
...And 16 more matches

JavaScript modules - JavaScript
androidsafari on iossamsung internetnode.jsimportchrome full support 61edge full support 16 full support 16 full support 15disabled disabled from version 15: this feature is behind the experimental javascript features preference.firefox full support 60 full support 60 no support 54 — 60disabled disabled from version 54 until version 60 (exclusive): this feature is behind the dom.modulescripts.enabled preference.
... to change preferences in firefox, visit about:config.ie no support noopera full support 48safari full support 10.1webview android full support 61chrome android full support 61firefox android full support 60 full support 60 no support 54 — 60disabled disabled from version 54 until version 60 (exclusive): this feature is behind the dom.modulescripts.enabled preference.
... to change preferences in firefox, visit about:config.opera android full support 45safari ios full support 10.3samsung internet android full support 8.0nodejs full support 13.2.0notes full support 13.2.0notes notes modules must either have a filename ending in .mjs, or the nearest parent package.json file must contain "type": "module".
...And 16 more matches

Repackaging Firefox - Archive of obsolete content
at the very least, don't skip the "important extension preferences" section below.
...this xpi has the following contents chrome.manifest components/partnerbookmarks.js defaults/preferences/partner.js install.rdf locale/ar/partner.properties locale/cs/partner.properties locale/da/partner.properties locale/de/partner.properties locale/el/partner.properties locale/en-gb/partner.properties locale/partner.properties locale/es-ar/partner.properties locale/es-es/partner.properties locale/fi/partner.properties locale/fr/partner.properties locale/he/partner.properties locale/hu/partner.properties locale/it/partne...
... defaults/preferences/partner.js default preferences for this dex.
...And 15 more matches

prefpane - Archive of obsolete content
« xul reference home [ examples | attributes | properties | methods | related ] a single preference panel in a prefwindow.
... a prefpane is made up of two parts, the preferences descriptions, which specify the set of preferences that will be modified, and the user interface for adjusting those preferences.
... the former is specified using a preferences element while the latter may be specified using other xul elements.
...And 15 more matches

Migrate apps from Internet Explorer to Mozilla - Archive of obsolete content
you can reference entities through their numerical or character reference.
... for example, you can reference the non-breaking space character with &#160; or with its equivalent character reference &nbsp;.
... accessing elements to retrieve an element reference using the cross-browser approach, you use document.getelementbyid(aid), which works in internet explorer 5.0+, mozilla-based browsers, other w3c-compliant browsers and is part of the dom level 1 specification.
...And 14 more matches

@font-feature-values - CSS: Cascading Style Sheets
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 about:config.ie no support noopera no support nosafari full support 9.1webview android no support nochrome android no support nofirefox android 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 about:config.opera android no support nosafari ios full support 9.3samsung internet android no support no@annotationchrome 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).
...And 14 more matches

NSS functions
other sources of information: the nss_reference documents the functions most commonly used by applications to support ssl.
... 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.
...And 13 more matches

nsIFile
exceptions thrown ns_error_file_not_directory indicates that this nsifile does not reference a directory.
... filesizeoflink print64 this attribute exposes the size of the symbolic link referenced by this nsifile.
... unlike filesize, this attribute corresponds to the size of the symbolic link referenced by this nsifile.
...And 13 more matches

Understanding WebAssembly text format - WebAssembly
each parameter has a type explicitly declared; wasm currently has four available number types (plus reference types; see the reference types) section below): i32: 32-bit integer i64: 64-bit integer f32: 32-bit float f64: 64-bit float a single parameter is written (param i32) and the return type is written (result i32), hence a binary function that takes two 32-bit integers and returns a 64-bit float would be written like this: (func (param i32) (param i32) (result f64) ...
...for a full list of the available opcodes, consult the webassembly.org semantics reference.
...to deal with strings and other more complex data types, webassembly provides memory (although we also have reference types in newer implementation of webassembly).
...And 13 more matches

XPCOM Objects - Archive of obsolete content
you can think of xpcom as a reference to all the capabilities available on the lower layers of firefox.
...let's look at the preference service as an example of this.
... another useful resource is this xpcom reference.
...And 12 more matches

Index of archived content - Archive of obsolete content
ils fs/path io/byte-streams io/file io/text-streams lang/functional lang/type loader/cuddlefish loader/sandbox net/url net/xhr places/bookmarks places/favicon places/history platform/xpcom preferences/event-target preferences/service remote/child remote/parent stylesheet/style stylesheet/utils system/child_process system/environment system/events system/runtime system/unload system/xul-app tabs/utils test/assert ...
... javascript debugger service javascript timers javascript daemons management label and description lookupnamespaceuri lookupprefix miscellaneous modules on page load page loading post data to window preferences progress listeners queryselector rosetta running applications svg animation svg general scrollbar sidebar stringview tabbox toolbar tree uri parsing view source for xul applications windows xm...
...l-related code snippets xml:base support in old browsers xpath getattributens common pitfalls communication between html and your extension creating custom firefox extensions with the mozilla build system custom about: urls default preferences deploying a plugin as an extension developing add-ons displaying web content in an extension without security issues downloading json and javascript in extensions enhanced extension installation extension etiquette extension library extension packaging extension samples extension theming guidelines ext...
...And 12 more matches

Modularization techniques - Archive of obsolete content
the mechanism we're using is based on the principles laid down by com, so pretty much anything you know about com can be applied here, and any reference on com can provide you with more interesting and complex examples than the ones provided here.
...nsisupports provides two key features, interface interrogation and reference counting.
... reference counting is performed using the addref() and release() methods.
...And 12 more matches

Advanced Svelte: Reactivity, lifecycle, accessibility - Learn web development
for example, in the following piece of code: const foo = obj.foo foo.bar = 'baz' svelte won't update references to obj.foo.bar, unless you follow it up with obj = obj.
... that's because svelte can't track object references, so we have to explicitly tell it that obj has changed by issuing an assignment.
...for that we'll need a reference to the dom node of the input.
...And 12 more matches

Bytecode Descriptions
this is how we implement typeof step 2, making typeof nonexistingvariable return "undefined" instead of throwing a referenceerror.
...per spec, the latter throws a referenceerror if x doesn't exist.
...implements: getvalue for references created by super.name.
...And 12 more matches

Localization - Archive of obsolete content
the sdk supports localization of strings appearing in: your main add-on's javascript code html files packaged with your add-on the title, description and homepage fields of your add-on's metadata the title and description fields of your add-on's preferences.
... to reference localized strings from html, add a data-l10n-id attribute to the html tag where you want the localized string to appear, and assign the identifier to it: <html> <body> <h1 data-l10n-id="hello_id"></h1> </body> </html> then you can use this html file to build your interface, for example inside a panel: var button = require("sdk/ui/button/action").actionbutton({ id: "localized-hello",...
... with l10n-id.attributename in the properties file like: hello_id.accesskey= h the following attributes are supported: accesskey alt label title placeholder further the localization of the aria attributes aria-label, aria-valuetext and aria-moz-hint are supported with the same aliases as on firefox os: arialabel ariavaluetext ariamozhint using localized strings in javascript to reference localized strings from your main add-on code, you do this: var _ = require("sdk/l10n").get; console.log(_("hello_id")); assigning to "_" in particular is not required, but is a convention from the gettext tools and will make it possible to work with existing tools that expect "_" to indicate localizable strings.
...And 11 more matches

Manipulating documents - Learn web development
there are a few really obvious bits you'll reference regularly in your code — consider the following diagram, which represents the main parts of a browser directly involved in viewing web pages: the window is the browser tab that a web page is loaded into; this is represented in javascript by the window object.
...you can use this object to return and manipulate information on the html and css that comprises the document, for example get a reference to an element in the dom, change its text content, apply new styles to it, create new elements and add them to the current element as children, or even delete it altogether.
... to manipulate an element inside the dom, you first need to select it and store a reference to it inside a variable.
...And 11 more matches

WebIDL bindings
if the argument type is a c++ reference, it will also become a nonnull<> around the actual type of the object in the process.
... dictionary types a dictionary argument is represented by a const reference to a struct whose name is the dictionary name in the mozilla::dom namespace.
... dictionary return values are represented by an out parameter whose type is a non-const reference to the struct described above, with all the members that have default values preinitialized to those default values.
...And 11 more matches

:is() (:matches(), :any()) - CSS: Cascading Style Sheets
this is demonstrated by the example on the :where() reference page.
...droidopera for androidsafari on iossamsung internet:is()chrome full support 68notes disabled full support 68notes disabled notes combinators in the selector list argument may not match correctly (see bug 842157).disabled from version 68: 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 11 more matches

Search Extension Tutorial (Draft) - Archive of obsolete content
the most technically sound method of achieving this, and the only acceptable way of changing preferences such that they are automatically restored on add-on uninstall, is to make such changes in the default preference branch, as explained below.
...changing default preference values there are two common ways of changing default preference values.
... the simplest, which works only for traditional, non-restartless add-ons, is to add the preference changes to a file in an extension's defaults/preferences/ directory.
...And 10 more matches

Client-side storage - Learn web development
this has many distinct uses, such as: personalizing site preferences (e.g.
... next, note how our html references a javascript file called index.js (see line 40).
... we'll start off by creating references to all the html features we need to manipulate in this example — we'll create them all as constants, as these references do not need to change in the lifecycle of the app.
...And 10 more matches

Slottable - Web APIs
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 in firefox, visit about:config.
...— 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).
...And 10 more matches

XRPermissionDescriptor.optionalFeatures - Web APIs
syntax xrpermissiondescriptor = { mode: xrsessionmode, requiredfeatures: reqfeaturelist, optionalfeatures: optfeaturelist }; xrpermissiondescriptor.optionalfeatures = optfeaturelist; optfeaturelist = xrpermissiondescriptor.optionalfeatures; value an array of strings taken from the xrreferencespacetype enumerated type, indicating set of features that your app would like to use, but can operate without if permission to use them isn't available.
... while further features may be defined in future editions of webxr, currently all permitted values come from the xrreferencespacetype enumerated type, indicating reference spaces the app rquires to be available.
... the reference space returned by xrsession.requestreferencespace() is either xrreferencespace or xrboundedreferencespace.
...And 10 more matches

XRView - Web APIs
transform read only an xrrigidtransform which describes the current position and orientation of the viewpoint in relation to the xrreferencespace specified when getviewerpose() was called on the xrframe being rendered.
... all positions and orientations within the views for a given xrviewerpose are specified in the reference space that was passed to xrframe.getviewerpose(); this is called the viewer reference space.
... the transform property describes the position and orientation of the eye or camera represented by the xrview, given in that reference space.
...And 10 more matches

Autoplay guide for media and Web Audio APIs - Web media technologies
le, you can assume that media will be allowed to autoplay only if at least one of the following is true: the audio is muted or its volume is set to 0 the user has interacted with the site (by clicking, tapping, pressing keys, etc.) if the site has been whitelisted; this may happen either automatically if the browser determines that the user engages with media frequently, or manually through preferences or other user interface features if the autoplay feature policy is used to grant autoplay support to an <iframe> and its document.
... handlefirstplay() looks like this: function handlefirstplay(event) { let vid = event.target; vid.onplay = null; // start whatever you need to do after playback has started } after getting a reference to the video element from the event object's target, the element's onplay handler is set to null.
... note: it is strongly recommended that you use the autoplay attribute whenever possible, because support for autoplay preferences are more widespread for the autoplay attribute than for other means of playing media automatically.
...And 10 more matches

StringView - Archive of obsolete content
the code stringview.js "use strict"; /*\ |*| |*| :: number.isinteger() polyfill :: |*| |*| /docs/web/javascript/reference/global_objects/number/isinteger |*| \*/ if (!number.isinteger) { number.isinteger = function isinteger (nval) { return typeof nval === "number" && isfinite(nval) && nval > -9007199254740992 && nval < 9007199254740992 && math.floor(nval) === nval; }; } /*\ |*| |*| stringview mdndeveloper network |*| |*| revision #12, march 21st, 2017 |*| |*| https://developer.mozilla.org/add-ons/code_...
... buffer read only arraybuffer the buffer to be shared between stringview.rawdata and stringview.bufferview view references.
... object reference to stringview.bufferview or a new arraybufferview of stringview.buffer will be created (depending on startoffset and length arguments passed).
...And 9 more matches

Setting up an extension development environment - Archive of obsolete content
this will utilize distinctive development preferences in about:config.
... development preferences there is a set of development preferences that, when enabled, allows you to view more information about application activity, thus making debugging easier.
... however, these preferences can degrade performance, so you may want to use a separate development profile when you enable these preferences.
...And 9 more matches

Common causes of memory leaks in extensions - Extensions
storing references to window objects and dom nodes the most common problem is extensions holding onto references to content windows for too long.
... to avoid these issues, references to dom nodes in foreign document should instead be stored in an object which is specific to that document, and cleaned up when the document is unloaded, or stored as weak references.
...the interval function in the example would still hold a reference to contentdoc, therefore leaking the content document and the associated window and compartment.
...And 9 more matches

Investigating leaks using DMD heap scan mode
when combined with cycle collector logging, this can be used to investigate leaks of refcounted cycle collected objects, by figuring out what holds a strong reference to a leaked object.
...if you have a patch that introduces a leak, you are probably better off auditing all of the strong references that your patch creates before trying this.
... known edges: 0x7f08975a24c0 [fragmentorelement (xhtml) head https://www.example.com] --[mattrsandchildren[i]]--> 0x7f0882fe3230 0x7f08967e7b20 [js object (htmlscriptelement)] --[unwrapdomobject(obj)]--> 0x7f0882fe3230 the first two lines mean that the script element 0x7f0882fe3230 contains a strong reference to the eventlistenermanager 0x7f0899b4e550.
...And 9 more matches

NSS API Guidelines
likewise, the external references to errors are made in the prototypes files, with the functions which can return them.
...for some data structures, this problem can be removed by protected reference counting.
...be sure to increment the reference count, on the returned object, before unlocking.
...And 9 more matches

Mozilla internal string guide
all string classes support the following three ownership models dynamically: reference counted, copy-on-write, buffers (the default) adopted buffers (a buffer that the string class owns, but is not reference counted, because it came from somewhere else) dependent buffers, that is, an underlying buffer that the string class does not own, but that the caller that constructed the string guarantees will outlive the string instance in addition, there is a special string class, ns[c]...
...autostring, that additionally contains an internal 64-unit buffer (intended primarily for use on the stack), leading to a fourth ownership model: storage within an auto string's stack buffer auto strings will prefer reference counting an existing reference-counted buffer over their stack buffer, but will otherwise use their stack buffer for anything that will fit in it.
... str.assign(reversedstr); } as function parameters for methods which are exposed across modules, use nsastring references to pass strings.
...And 9 more matches

nsIXULTemplateBuilder
a template builder, given an input source of data, a template, and a reference point, generates a list of results from the input, and copies part of the template for each result.
... templates may generate content recursively, using the same template, but with the previous iteration's results as the reference point.
... as an example, for an xml data source the initial reference point would be a specific node in the dom tree and a template might generate a list of all child nodes.
...And 9 more matches

ByteLengthQueuingStrategy - Web APIs
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, visit about:config.ie no support noopera full support 46safari ?
... webview android full support 59chrome android full support 59firefox android 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).
...And 9 more matches

CountQueuingStrategy - Web APIs
msung 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, visit about:config.ie no support noopera full support 46safari ?
... webview android full support 59chrome android full support 59firefox android 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).
...And 9 more matches

Inputs and input sources - Web APIs
t targetraypose = frame.session.getpose(primaryinput.targetrayspace, viewerrefspace); let targetrayorigin = targetraypose.transform.position; let targetrayvector = targetraypose.transform.orientation; with this, you now have the point from which the targeting ray is emitted (targetrayorigin) and the direction in which it's pointing (targetrayvector), given in the viewer's reference space (viewerrefspace).
... handedness the most direct way to decide which controller is primary is to have a user-definable "handedness" preference that the user sets to indicate which of their hands is dominant.
...the input source's targetrayspace is an xrspace (and actually probably an xrreferencespace) which can be used to determine the orientation of the target ray relative to the viewer's facing direction.
...And 9 more matches

HTML attribute: rel - HTML: Hypertext Markup Language
link not allowed not allowed dns-prefetch tells the browser to preemptively perform dns resolution for the target resource's origin external resource not allowed not allowed external referenced document is not part of the same site as the current document.
... external resource not allowed not allowed license indicates that the main content of the current document is covered by the copyright license described by the referenced document.
... external resource not allowed not allowed next indicates that the current document is a part of a series, and that the next document in the series is the referenced document.
...And 9 more matches

Chapter 3: Introduction to XUL—How to build a more intuitive UI - Archive of obsolete content
for the latest xul specifications, please see the xul reference on mdc and the xul page in the mozilla wiki.
... because a xul document is also an xml document, it can contain xhtml, svg, mathml, and other elements; if you use external entity references, the xml document's contents are modularized; combined with other xml-related technologies, such as dom, xlink, or xslt, you can use it for a number of different applications.
...there are also special kinds of element that only come into play after being referenced by another element.
...And 8 more matches

New Skin Notes - Archive of obsolete content
if you go to your user preferences, you can change the skin to "devmo".
... feedback fix weird width bug on preferences page.
...--callek add "what not to do" css class to stylesheet, as discussed on talk:core javascript 1.5 reference.
...And 8 more matches

Document Object Model - Archive of obsolete content
the window's open() method also returns a reference to the new window so you can call functions of the new window from the opener.
...since it is one of the most commonly referenced properties of the window, the document property is usually referenced without the 'window.' qualifier.
... function dofind(){ var meter = document.getelementbyid('progmeter'); meter.hidden = false; } this function first gets a reference to the progress meter using its id, progmeter.
...And 8 more matches

Using the Right Markup to Invoke Plugins - Archive of obsolete content
if the flash activex control is not installed, ie will then go to the url referenced by the codebase attribute and retrieve the activex control.
...furthermore, ie's use of the codebase attribute as an obtainment mechanism itself is not strictly correct according to the html 4.01 specification, which says that the codebase attribute should be used to qualify urns referenced by the data, archive, and classid attributes.
...ssid="clsid:8ad9c840-044e-11d1-b3e9-00805f499d93" width="460" height="160" codebase="http://java.sun.com/products/plugin/autodl/jinstall-1_4_1-windows-i586.cab#version=1,4,1"> <param...> <param...> </object> the above invocation won't work for mozilla-based browsers such as netscape 7 because of the same reason mentioned above: classid used in conjunction with a unique identifier references an architecture (activex) that mozilla code (and thus netscape 7) does not support.
...And 8 more matches

Overview of Mozilla embedding APIs
nscomptr<interface-type> these are templatized smart pointers which transparently deal with xpcom reference counting issues.
... nsweakptr this is an nscomptr which encapsulates xpcom weak reference support.
... see the nsiweakreference document for more information.
...And 8 more matches

HTTP Cache
the hash tables keep a strong reference to cacheentry objects.
...we also - in a thread-safe manner - count the number of consumers keeping a reference on each entry.
... the open callback actually doesn't give the consumer directly the cacheentry object but a small wrapper class that manages the 'consumer reference counter' on its cache entry.
...And 8 more matches

CustomizableUI.jsm
if you want to use it from a jsm or another context without a window reference, you need to import it yourself: components.utils.import("resource:///modules/customizableui.jsm"); introduction the module is intended for two primary purposes: allow adding, moving and removing customizable widgets.
...during a batch update, the customization state is not saved to the user's preferences file, in order to reduce (possibly sync) io.
... note: unlike button described with xul overlay, widget-button created via createwidget() method cannot have references to other overlay elements transferred directly as parameters.
...And 8 more matches

XPCOM array guide
nscomarray<t> - a c++ class which provides a typesafe, reference-counted container for pointers to a single type of com object.
... ownership nsiarray xpcom object yes no no no reference counted, weak/strong nsimutablearray xpcom object yes no yes no reference counted, weak/strong nscomarray<t> xpcom object no yes yes* no reference counted, strong nstarray<t> any that has a default constructor and copy constructor no yes yes* no can hold objects directly, in which case it owns them.
... nsisupportsarray xpcom object yes no yes* no reference counted, strong (*) note: concrete c++ arrays can be made read-only by declaring them const.
...And 8 more matches

Using XPCOM Utilities to Make Things Easier
unless you have very special requirements for managing reference counting or handling interface discovery, theimplementation macros that xpcom provides can be used.
... // returns a reference to a shared nsiid object\ static const nsiid iid1 = ns_get_iid(nsisupports); // constructs a new nsiid object static const nsiid iid2 = ns_isupports_iid; in order to use ns_impl_isupportsn, you must be sure that a member variable of type nsrefcnt is defined and named mrefcnt in your class.
... smart pointers all of the interfaces that you've seen so far are reference counted.
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nsIContentPrefObserver
dom/interfaces/base/nsicontentprefservice.idlscriptable this interface allows code to easily watch for changes to the values of content preferences.
... 1.0 66 introduced gecko 1.9 inherits from: nsisupports last changed in gecko 1.9 (firefox 3) method overview void oncontentprefremoved(in astring agroup, in astring aname); void oncontentprefset(in astring agroup, in astring aname, in nsivariant avalue); methods oncontentprefremoved() called when a content preference is removed.
... void oncontentprefremoved( in astring agroup, in astring aname ); parameters agroup the group to which the removed preference belonged; this may be the uri of a web site.
...And 8 more matches

Index
this reference will help you track those events down and learn how to use them.
... the following preferences are supported to control how this gets logged: 30 gloda examples thunderbird 3, thunderbird this page provides some examples for using gloda.
...it assumes you are already familiar with configuring preferences for deployed builds in addition to setting up thunderbird to use an ldap directory.
...And 8 more matches

Thunderbird Configuration Files
to access the config editor, go to tools > options or do thunderbird > preferences.
... if you are on mac os x, and on linux do edit > preferences on, select the advanced options panel, click on the general tab, and click on config editor.
... this will display a list of used preferences, as well as a search bar at the top.
...And 8 more matches

IDBIndex - Web APIs
an index is a kind of object store for looking up records in another object store, called the referenced object store.
...an index lets you look up records in an object store using properties of the values in the object stores records other than the primary key the index is a persistent key-value storage where the value part of its records is the key part of a record in the referenced object store.
... the records in an index are automatically populated whenever records in the referenced object store are inserted, updated, or deleted.
...And 8 more matches

Basic concepts - Web APIs
for the reference documentation on the indexeddb api, refer back to the main indexeddb api article and its subpages, which document the types of objects used by indexeddb.
... for the reference documentation on object store, see idbobjectstore.
...to learn more about transaction types, see the reference article for indexeddb.
...And 8 more matches

clip-path - CSS: Cascading Style Sheets
if no geometry box is specified, the border-box will be used as the reference box.
... <geometry-box> if specified in combination with a <basic-shape>, this value defines the reference box for the basic shape.
...the geometry box can be one of the following values: margin-box uses the margin box as the reference box.
...And 8 more matches

Chapter 4: Using XPCOM—Implementing advanced processes - Archive of obsolete content
reference materials to get an idea of what kinds of functions embedded xpcom can handle, take a look at the api reference and the interface definitions from xpidl in the actual source code.
... you can perform a full-text search of the firefox source code in mozilla cross-reference using character strings, filenames, etc as search keys.
...listing 1 shows how you can use xpconnect to acquire references to xpcom services and create new xpcom objects.
...And 7 more matches

XUL Events - Archive of obsolete content
« xul reference home the following tables and sections describe the event handler that are valid for most xul elements.
... xul event reference subpages broadcastthe broadcast event is executed when the attributes of the element (such as a broadcaster) being listened to are changed.
... attribute: onpopupshown syncfrompreference this event is sent when the element is being changed because a preference changed, or when an element is initialized from a preference.
...And 7 more matches

Accessing Files - Archive of obsolete content
accessing files this section describes how to create a file reference.
...because string paths are not used, references to files in a file object are made relative to some starting directory.
...once one of these starting directories is determined, a file reference may be created relative to this.
...And 7 more matches

Handling common HTML and CSS problems - Learn web development
go to atom's preferences...
...by choosing atom > preferences...
... on mac, or file > preferences...
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Mozilla’s UAAG evaluation report
(p1) c preferences, appearance, colors - "use my chosen colors, ignoring the colors and background image specified" 3.2 toggle audio, video, animated images.
... (p1) p animated images can be made still with the escape key animated images can be made still as a preference under preferences, privacy & security, images - "animated images should loop" mozilla has no preference or command to toggle audio or video 3.3 toggle animated/blinking text.
...(p1) g preferences, advanced, scripts & windows - enable javascript for when toggled off, we don't notify the user when a page is loaded with scripts 3.5 toggle content refresh.
...And 7 more matches

Introduction to XPCOM for the DOM
i will introduce nscomptr's, interfaces, reference counting, and the nsisupports interface.
... reference counting basics xpcom uses a reference counting mechanism (refcount in short) to make sure that no object is deleted while interface pointers still point at that object.
...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.
...And 7 more matches

Introduction to the DOM - Web APIs
this documentation provides an object-by-object reference to the dom.
... dom and javascript the short example above, like nearly all of the examples in this reference, is javascript.
...though we focus exclusively on javascript in this reference documentation, implementations of the dom can be built for any language, as this python example demonstrates: # python dom example import xml.dom.minidom as m doc = m.parse(r"c:\projects\py\chap1.xml") doc.nodename # dom property of document object p_list = doc.getelementsbytagname("para") for more information on what technologies are involved in writing javascript on the web, see javascript t...
...And 7 more matches

XRPermissionDescriptor.requiredFeatures - Web APIs
currently, all features are members of the xrreferencespacetype enumerated type, indicating the reference space types that your app would like permission to use, but can operate without.
... the permitted values are: the types of reference space are listed in the table below, with brief information about their use cases and which interface is used to implement them.
... xrreferencespacetype description interface bounded-floor similar to the local type, except the user is not expected to move outside a predetermined boundary, given by the boundsgeometry in the returned object.
...And 7 more matches

XRPermissionStatus.granted - Web APIs
currently, all of these strings come from the xrreferencespacetype enumerated type.
... the types of reference space are listed in the table below, with brief information about their use cases and which interface is used to implement them.
... xrreferencespacetype description interface bounded-floor similar to the local type, except the user is not expected to move outside a predetermined boundary, given by the boundsgeometry in the returned object.
...And 7 more matches

Content type - SVG: Scalable Vector Graphics
the normative definition of these keywords is found in user preferences for colors (css2, section 18.2).
... | "rgb("integer, integer, integer")" | "rgb("integer "%", integer "%", integer "%)" | color-keyword hexdigit ::= [0-9a-fa-f] where color-keyword matches (case insensitively) one of the color keywords listed in css color module level 3, or one of the system color keywords listed in user preferences for colors (css2, section 18.2).
... funciri <funciri> functional notation for a reference.
...And 7 more matches

package.json - Archive of obsolete content
others, such as lib, permissions, and preferences, represent instructions to the jpm tool itself to generate and include particular code and data structures in your add-on.
...he add-on's directory is "my-addon"): { "name": "my-addon", "title": "my-addon", "id": "jid1-1fergv45e4f4f@jetpack", "description": "a basic add-on", "author": "", "license": "mpl-2.0", "version": "0.1" } if you are using the new jpm tool, you can easily access manifest data from package.json by requiring it like any other module: var title = require("./package.json").title; key reference package.json may contain the following keys: author the name of the package's original author; this could be the name of a person or a company.
... locales an object holding json objects referenced by a locale name that use the following keys: title, description and homepage.
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How to convert an overlay extension to restartless - Archive of obsolete content
well, xul overlays and windows, jsm files, chrome & resource mappings with localization, default preferences, but no xpcom components of your own.
... step 4: manually handle default preferences normal extensions load default preferences from a standardized file automatically.
...branch : services.prefs; branch.setcomplexvalue(prefname, components.interfaces.nsisupportsstring, string); } just grab the above, move your default preferences file to your chrome mapping, and then do the following line once during your startup: services.scriptloader.loadsubscript("chrome://myaddon/content/defaultprefs.js", {pref:setdefaultpref} ); that's it.
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Inline options - Archive of obsolete content
firefox 7 supports a new syntax for defining extensions' preferences for both bootstrapped and traditional extensions.
... the user interface for the preferences defined with this new syntax appears in the extension's detail view in the add-on manager.
...here is an example of an options.xul file: <?xml version="1.0"?> <!doctype mydialog system "chrome://myaddon/locale/mydialog.dtd"> <vbox xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"> <setting type="bool" pref="extensions.myaddon.bool" title="boolean" desc="stored as a boolean preference" /> </vbox> note that it's limited to <setting> tags.
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Adding sidebars - Archive of obsolete content
the problem is that choosing the right keyboard shortcuts is very, very hard, as explained by the creator of adblock plus, and the mozilla keyboard reference.
... to sum up both of these references: you can choose an obscure key combination that won't conflict with firefox, such as ctrl+shift+(some letter), but there's no way of knowing if any other extension uses that same combination as well.
...one minor difference is that the xul sidebar should be defined using the « xul reference « root element instead of window or dialog.
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Theme changes in Firefox 4 - Archive of obsolete content
the value does not necessarily reflect the user preference in the toolbar customization palette anymore.
... the iconsize attribute of the toolbox element in the main browser window (#navigator-toolbox) still reflects the user preference in the toolbar customization palette.
... default values of the iconsize attribute on browser toolbars if the theme doesn't override the value of the iconsize attribute, the following defaults are used: toolbar element id default iconsize value menu bar #toolbar-menubar small navigation bar #nav-bar small or large depending on user preference.
...And 6 more matches

Getting started with HTML - Learn web development
note: find useful reference pages that include lists of block and inline elements.
...abled elements typically have a grayed-out appearance.) for example: <input type="text" disabled="disabled"> as shorthand, it is acceptable to write this as follows: <!-- using the disabled attribute prevents the end user from entering text into the input box --> <input type="text" disabled> <!-- text input is allowed, as it doesn't contain the disabled attribute --> <input type="text"> for reference, the example above also includes a non-disabled form input element.the html from the example above produces this result: omitting quotes around attribute values if you look at code for a lot of other sites, you might come across a number of strange markup styles, including attribute values without quotes.
... entity references: including special characters in html in html, the characters <, >,",' and & are special characters.
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Cooperative asynchronous JavaScript: Timeouts and intervals - Learn web development
it takes the following parameters: a function to run, or a reference to a function defined elsewhere.
...you can give your function a name, and even define it somewhere else and pass a function reference to the settimeout().
... here's a few hints for you: you can structure and style the button markup however you like; just make sure you use semantic html, with hooks to allow you to grab the button references using javascript.
...And 6 more matches

Displaying Places information using views
remember that, because xul is xml, any ampersands in query uris must be written as entity reference &amp; and not simply &.
...see the tree reference and trees tutorial for general information about trees.
... **the title column (and only the title column) automatically receives the favicon referenced by the nsinavhistoryresultnode property icon.
...And 6 more matches

The Places database
any time a places component wants to reference a url, whether visited or not, it refers to this table.
... each entry has an optional reference to the moz_favicon table to identify the favicon of the page.
...it contains a reference to the moz_places table which contains the url and other global statistics.
...And 6 more matches

nsIScriptableIO
for example: io.getfile("profile", "cookies.txt"); from an xpcom component, however, you will need to get a reference as with other components: var scriptableio = components.classes["@mozilla.org/io/scriptable-io;1"] .getservice(); scriptableio.getfile("profile", "cookies.txt"); method overview nsifile getfile(in astring alocation, in astring afilename); nsifile getfilewithpath(in astring afilepath); nsisupports newinputstream(in nsivar...
...tional] in astring areplacechar, [optional] in unsigned long abuffersize); nsisupports newoutputstream(in nsivariant abase, in astring amode, [optional] in astring acharset, [optional] in astring areplacechar, [optional] in unsigned long abuffersize, [optional] in unsigned long apermissions); nsiuri newuri(in nsivariant auri); methods getfile() retrieves a reference to a file or directory on disk.
... the file does not have to exist already; this method simply creates the file reference which may then be passed to the newinputstream() or newoutputstream() method to open the file for reading or writing.
...And 6 more matches

<basic-shape> - CSS: Cascading Style Sheets
when creating a shape, the reference box is defined by each property that uses <basic-shape> values.
... the coordinate system for the shape has its origin at the top-left corner of the reference box, with the x-axis running to the right and the y-axis running downwards.
... all the lengths expressed in percentages are resolved from the used dimensions of the reference box.
...And 6 more matches

href - SVG: Scalable Vector Graphics
the href attribute defines a link to a resource as a reference url.
...<animatetransform>, <discard>, <feimage>, <image>, <lineargradient>, <mpath>, <pattern>, <radialgradient>, <script>, <set>, <textpath>, and <use> html, body, svg { height: 100%; } <svg viewbox="0 0 160 40" xmlns="http://www.w3.org/2000/svg"> <a href="https://developer.mozilla.org/"><text x="10" y="25">mdn web docs</text></a> </svg> in svg a for <a>, href defines the location of the referenced object, expressed as a url reference.
... value <url> default value none animatable yes example html, body, svg { height: 100%; } <svg viewbox="0 0 100 100" xmlns="http://www.w3.org/2000/svg"> <image href="/files/2917/fxlogo.png" x="0" y="0" height="100" width="100"/> </svg> lineargradient for <lineargradient>, href defines url referring to a template gradient element; to be valid, the reference must be to a different <lineargradient> or <radialgradient> element.
...And 6 more matches

Localizing an extension - Archive of obsolete content
if you haven't already created an extension, or would like to refresh your memory, take a look at the previous articles in this series: creating a status bar extension creating a dynamic status bar extension adding preferences to an extension download the sample you can download this article's sample code so you can look at it side-by-side with the article, or to use it as a basis for your own extension.
...each locale file maps entity names referenced in the xul files to the strings themselves.
... the preference dialog, whose xul file is options.xul, has a corresponding options.dtd file that looks like this: <!entity options_window_title "stockwatcher 2 preferences"> <!entity options_symbol.label "stock to watch: "> the "options_window_title" entity maps to the string "stockwatcher 2 preferences", which is used as the title of the preference window.
...And 5 more matches

Proxy UI - Archive of obsolete content
products firefox menu: preferences > advanced tab > networking tab > connection button.
... thunderbird menu: preferences > advanced tab > networking tab > connection button.
... seamonkey menu: preferences > advanced group > proxies panel menu: right-click on offline-online button (on browser windows).
...And 5 more matches

Using Remote XUL - Archive of obsolete content
this also means you can't load xul using file:// urls unless you set the preference dom.allow_xul_xbl_for_file to true.
...in order to give them style we have to reference a stylesheet with rules for styling menus.
...in this case, we'll reference the default application stylesheet--the one used by the browser to style its own interface.
...And 5 more matches

XUL Questions and Answers - Archive of obsolete content
using the "icon" attribute on a button from xulplanet.com reference: this attribute should be used to set the usage for common buttons.
... how to add and remove values to/from, set up inside a <prefwindow> container to handle the preference?
...some of them can be tied to a preference so that the preference is automatically updated as the control is manipulated.
...And 5 more matches

menulist - Archive of obsolete content
« xul reference home [ examples | attributes | properties | methods | related ] an element that can be used for drop-down choice lists.
... attributes accesskey, crop, disableautoselect, disabled, editable, focused, image, label, oncommand, open, preference, readonly, sizetopopup, tabindex, value properties accessibletype, crop, description, disableautoselect, disabled, editable, editor, image, inputfield, itemcount, label, menuboxobject, menupopup, open, selectedindex, selecteditem, tabindex, value methods appenditem, contains, getindexofitem, getitematindex, insertitemat, removeallitems, removeitemat, select examples <menulist> <m...
... preference type: id connects the element to a corresponding preference.
...And 5 more matches

tabbrowser - Archive of obsolete content
« xul reference home [ examples | attributes | properties | methods | related ] this element is used for holding a set of read-only views of web documents.
...if this attribute is set to true or omitted, autoscroll will be enabled or depending on the user preference general.autoscroll.
... contentviewerfile type: nsicontentviewerfile reference to the nsicontentviewerfile interface for the document.
...And 5 more matches

textbox - Archive of obsolete content
« xul reference home [ examples | attributes | properties | methods | related ] an input field where the user can enter text.
... attributes cols, decimalplaces, disabled, emptytext, hidespinbuttons, increment, label, max, maxlength, min, multiline, newlines, onblur, onchange, onfocus, oninput, placeholder, preference, readonly, rows, searchbutton, size, spellcheck, tabindex, timeout, type, value, wrap, wraparound properties accessibletype, clickselectsall, decimalplaces, decimalsymbol, defaultvalue, disabled, editor, emptytext, increment, inputfield, label, max, maxlength, min, placeholder, readonly, searchbutton, selectionend, selectionstart, size, spinbuttons, tabindex, textlength, timeout, type, value...
... preference type: id connects the element to a corresponding preference.
...And 5 more matches

Index - Learn web development
you can have a look at all of the different types on the css values and units reference page; you will encounter many of these in use as you work through these lessons.
...to find way more html elements, you can take a look at our html element reference (the inline text semantics section would be a great place to start.) in the next article we will look at the html elements you'd use to structure the different parts of an html document.
... 235 getting started with html attribute, beginner, codingscripting, comment, element, guide, html, entity reference, whitespace you made it to the end of the article!
...And 5 more matches

A first splash into JavaScript - Learn web development
in this case, we are using constants to store references to parts of our user interface; the text inside some of them might change, but the html elements referenced stay the same.
... the first three constants are each made to store a reference to the results paragraphs in our html, and are used to insert values into the paragraphs later on in the code (note how they are inside a <div> element, which is itself used to select all three later on for resetting, when we restart the game): <div class="resultparas"> <p class="guesses"></p> <p class="lastresult"></p> <p class="loworhi"></p> </div> the next two constants store references to the form text input and submit button and are used to control submit...
... <label for="guessfield">enter a guess: </label><input type="text" id="guessfield" class="guessfield"> <input type="submit" value="submit guess" class="guesssubmit"> our final two variables store a guess count of 1 (used to keep track of how many guesses the player has had), and a reference to a reset button that doesn't exist yet (but will later).
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What went wrong? Troubleshooting JavaScript - Learn web development
note: see our typeerror: "x" is not a function reference page for more details about this error.
...the earliest instance you'll find in the javascript is on line 48: const loworhi = document.queryselector('loworhi'); at this point we are trying to make the variable contain a reference to an element in the document's html.
...line 48 is using a document.queryselector() method to get a reference to an element by selecting it with a css selector.
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Internationalized Domain Names (IDN) Support in Mozilla Browsers
this will list all the preferences for your current profile.
... these preferences can be modified or new ones can be created without quitting the browser using the steps described below.
... create a new preference item using the menu new > string via a right-mouse click.
...And 5 more matches

Assert.jsm
undefined equal( actual, expected, message ); parameters actual test subject to be evaluated as equivalent to expected expected test reference to evaluate against actual message short explanation of the expected result notequal() the non-equality assertion tests for whether two objects are not equal with !=.
... undefined notequal( actual, expected, message ); parameters actual test subject to be evaluated as not equivalent to expected expected test reference to evaluate against actual message short explanation of the expected result deepequal() the equivalence assertion tests a deep equality relation.
... undefined deepequal( actual, expected, message ); parameters actual test subject to be evaluated as equivalent to expected, including nested properties expected test reference to evaluate against actual message short explanation of the expected result notdeepequal() the non-equivalence assertion tests for any deep inequality.
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Leak-hunting strategies and tips
strategy for finding leaks when trying to make a particular testcase not leak, i recommend focusing first on the largest object graphs (since these entrain many smaller objects), then on smaller reference-counted object graphs, and then on any remaining individual objects or small object graphs that don't entrain other objects.
... build with --enable-trace-malloc common leak patterns when trying to find a leak of reference-counted objects, there are a number of patterns that could cause the leak: ownership cycles.
...--jesse) dropping a reference on the floor by: forgetting to release (because you weren't using nscomptr when you should have been): see bug 99180 or bug 93087 for an example or bug 28555 for a slightly more interesting one.
...And 5 more matches

NSS_3.12_release_notes.html
libraries: 3.12.0.3 new in nss 3.12 3 new shared library are shipped with nss 3.12: nssutil sqlite nssdbm 1 new include file is shipped with nss3.12: utilrename.h new functions in the nss shared library: cert_checknamespace (see cert.h) cert_encodecertpoliciesextension (see cert.h) cert_encodeinfoaccessextension (see cert.h) cert_encodeinhibitanyextension (see cert.h) cert_encodenoticereference (see cert.h) cert_encodepolicyconstraintsextension (see cert.h) cert_encodepolicymappingextension (see cert.h) cert_encodesubjectkeyid (see certdb/cert.h) cert_encodeusernotice (see cert.h) cert_findcrlentryreasonexten (see cert.h) cert_findcrlnumberexten (see cert.h) cert_findnameconstraintsexten (see cert.h) cert_getclassicocspdisabledpolicy (see cert.h) cert_getclassicocspenabledhardfailurepol...
...bug 384926: libpkix build problems bug 389411: mingw build error - undefined reference to `_imp__pkix_errornames' bug 389904: avoid multiple decoding/encoding while creating and using pkix_pl_x500name bug 390209: pkix aia manager tries to get certs using aia url with ocsp access method bug 390233: umbrella bug for libpkix cert validation failures discovered from running vfyserv bug 390499: libpkix does not check cached cert chain for revocation bug 390502: libpkix fails cert valida...
...inderbox bug 158242: pk11_putcrl is very memory inefficient bug 287563: please make cert_comparenamewithconstraints a non-static function bug 301496: nss_shutdown failure in p7sign bug 324878: crlutil -l outputs false crl names bug 337010: oom crash [[@ nsc_digestkey] dereferencing possibly null att bug 343231: certutil issues certs for invalid requests bug 353371: klocwork 91117 - null pointer dereference in cert_certchainfromcert bug 353374: klocwork 76494 - null ptr derefs in cert_formatname bug 353375: klocwork 76513 - null ptr deref in nsscertificatelist_docallback bug 353413: klocwork 76541 free uninitialized pointer in cert_findcerturlextension bug 353416: klocwork 76593 null ptr deref in nsscryptokiprivatekey_setcertificate bug 353423: klocwork bugs in nss/lib/pk11wrap/dev3hack.c bug 353739...
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Garbage collection
(this means if an object has all references to it dropped during this incremental gc, it will be collected on the next incremental gc.) this is called snapshot-at-the-beginning because it is conceptually equivalent to taking a snapshot of live objects at the beginning of the incremental gc and marking all those objects.
...spidermonkey also needs a read barrier for weak references (see dictionary).
... this is because weak references have a similar problem as is solved by the incremental write barrier above, but cannot use the same solution.
...And 5 more matches

JSPrincipals
properties name type description refcount mozilla::atomic<int32_t> reference count.
...obsolete since jsapi 12 destroy void (*)(jscontext *, jsprincipals *) pointer to the function that decrements the reference count and possibly frees the principals if they are no longer in use.
... jsprincipals has refcount property that is the reference count.
...And 5 more matches

Starting WebLock
you can then use the service manager to add the component to the category: nsresult rv; nscomptr<nsiservicemanager> servman = do_queryinterface((nsisupports*)acompmgr, &rv); if (ns_failed(rv)) return rv; do_queryinterface the previous code uses the special nscomptr function do_queryinterface that lets you queryinterface without having to worry about reference counting, error handling, and other overhead.
... once you have a nsiservicemanager reference, you can ask it for the service you are interested in.
...if you really want to change the return result type you can use a special flag in your xpidl that denotes this (see the xpidl reference).
...And 5 more matches

nsIAccessibleText
x x coordinate of the bounding box of the referenced character.
... y y coordinate of the bounding box of the referenced character.
... width width of the bounding box of the referenced character.
...And 5 more matches

nsIWebBrowser
method overview void addwebbrowserlistener(in nsiweakreference alistener, in nsiidref aiid); void removewebbrowserlistener(in nsiweakreference alistener, in nsiidref aiid); attributes attribute type description containerwindow nsiwebbrowserchrome the chrome object associated with the browser instance.
...if the implementation does this, it must also implement nsiweakreference.
...note: nsiinterfacerequestor and nsiweakreference might also need to be implemented by the chrome object.
...And 5 more matches

Guide to the Fullscreen API - Web APIs
≤79alternate name alternate name uses the non-standard name: webkitisfullscreenfirefox full support 64 full support 64 no support 49 — 65disabled disabled from version 49 until version 65 (exclusive): this feature is behind the full-screen-api.unprefix.enabled preference (needs to be set to true).
... to change preferences in firefox, visit about:config.
... 18alternate name alternate name uses the non-standard name: webkitisfullscreenfirefox android full support 64 full support 64 no support 49 — 65disabled disabled from version 49 until version 65 (exclusive): this feature is behind the full-screen-api.unprefix.enabled preference (needs to be set to true).
...And 5 more matches

HTMLSlotElement.name - Web APIs
let slots = this.shadowroot.queryselectorall('slot'); slots[1].addeventlistener('slotchange', function(e) { let nodes = slots[1].assignednodes(); console.log('element in slot "' + slots[1].name + '" changed to "' + nodes[0].outerhtml + '".'); }); here we grab references to all the slots, then add a slotchange event listener to the 2nd slot in the template — which is the one that keeps having its contents changed in the example.
... 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 in firefox, visit about:config.
...And 5 more matches

Slottable: assignedSlot - Web APIs
here is one such example: <my-paragraph> <span slot="my-text">let's have some different text!</span> </my-paragraph> in our javascript file we get a reference to the <span> shown above, then log a reference to the original <slot> element the <span> was inserted in.
... 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 in firefox, visit about:config.
...And 5 more matches

WebXR Device API - Web APIs
xrreferencespace a subclass of xrspace which is used to identify a spatial relationship in relation to the user's physical environment.
... the xrreferencespace coordinate system is expected to remain unchanged through the lifespan of the xrsession.the world has no boundaries and extends infinitely in every direction.
... xrboundedreferencespace xrboundedreferencespace extends the xrreferencespace coordinate system to further include support for a finite world with set boundaries.
...And 5 more matches

Window.customElements - Web APIs
the customelements read-only property of the window interface returns a reference to the customelementregistry object, which can be used to register new custom elements and get information about previously registered custom elements.
... 54edge 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.customelements.enabled preference (needs to be set to true).
... to change preferences in firefox, visit about:config.
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CSS Scrollbars - CSS: Cascading Style Sheets
</div> result reference css properties scrollbar-width scrollbar-color specifications specification status comment css scrollbars level 1 working draft initial definition.
... 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 about:config.ie no support noopera no support nosafari no support nowebview android no support nochrome android no support nofirefox android 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).
...And 5 more matches

transform-box - CSS: Cascading Style Sheets
values content-box the content box is used as the reference box.
... the reference box of a <table> is the border box of its table wrapper box, not its table box.
... border-box the border box is used as the reference box.
...And 5 more matches

WeakRef - JavaScript
a weakref object lets you hold a weak reference to another object, without preventing that object from getting garbage-collected.
... description a weakref object contains a weak reference to an object, which is called its target or referent.
... a weak reference to an object is a reference that does not prevent the object from being reclaimed by the garbage collector.
...And 5 more matches

refX - SVG: Scalable Vector Graphics
the refx attribute defines the x coordinate of an element’s reference point.
... two elements are using this attribute: <marker> and <symbol> marker for <marker>, refx defines the x coordinate of the marker’s reference point, which is to be placed exactly at the marker’s position on the shape.
... left the reference point of the marker is placed at the left edge of the shape.
...And 5 more matches

refY - SVG: Scalable Vector Graphics
the refy attribute defines the y coordinate of an element’s reference point.
... two elements are using this attribute: <marker> and <symbol> marker for <marker>, refy defines the y coordinate of the marker’s reference point, which is to be placed exactly at the marker’s position on the shape.
... top the reference point of the marker is placed at the top edge of the shape.
...And 5 more matches

Using templates and slots - Web Components
this element and its contents are not rendered in the dom, but it can still be referenced using javascript.
... let's look at a trivial quick example: <template id="my-paragraph"> <p>my paragraph</p> </template> this won't appear in your page until you grab a reference to it with javascript and then append it to the dom, using something like the following: let template = document.getelementbyid('my-paragraph'); let templatecontent = template.content; document.body.appendchild(templatecontent); although trivial, you can already start to see how this could be useful.
...ement-name">template</span> <span slot="description">a mechanism for holding client- side content that is not to be rendered when a page is loaded but may subsequently be instantiated during runtime using javascript.</span> </element-details> about that snippet, notice these points: the snippet has two instances of <element-details> elements which both use the slot attribute to reference the named slots "element-name" and "description" we put in the <element-details> shadow root .
...And 5 more matches

Using the WebAssembly JavaScript API - WebAssembly
tables a webassembly table is a resizable typed array of references that can be accessed by both javascript and webassembly code.
... while memory provides a resizable typed array of raw bytes, it is unsafe for references to be stored in a memory since a reference is an engine-trusted value whose bytes must not be read or written directly by content for safety, portability, and stability reasons.
... tables have an element type, which limits the types of reference that can be stored in the table.
...And 5 more matches

URIs and URLs - Archive of obsolete content
identifier an identifier is an object that can act as a reference to something that has identity.
... noteable differences necko does not support certain deprecated forms of relative urls, based on the following part of rfc 2396: if the scheme component is defined, indicating that the reference starts with a scheme name, then the reference is interpreted as an absolute uri and we are done.
... otherwise, the reference uri's scheme is inherited from the base uri's scheme component.
...And 4 more matches

Learn XPI Installer Scripting by Example - Archive of obsolete content
overview of the install script xpi install scripts are written in javascript using xpinstall engine syntax defined in the xpinstall api reference.
...in the example above, "netscape seamonkey" is the display name, "browser" is the registry name, and the version is "6.0.0.2000110807." see initinstall in the xpinstall api reference for more information on the initialization process.
..."program" represents the directory where software itself is installed (e.g., c:\program files\ on win32 systems), as opposed to supporting directories like "components", "chrome", or "temporary" (see getfolder in the xpinstall api reference for a list of keywords).
...And 4 more matches

XUL element attributes - Archive of obsolete content
« xul reference home the following attributes are common to all xul elements: align type: one of the values below the align attribute specifies how child elements of the box are aligned, when the size of the box is larger than the total size of the children.
... for xml datasources, only one source is used, either the url of an xml file or an anchor reference to another element within the same document.
... for instance, the reference '#data' refers to an element with the id 'data'.
...And 4 more matches

XUL accessibility guidelines - Archive of obsolete content
learn more keyboard shortcuts and accesskeys mozilla keyboard planning faq and cross reference.
...a short reference for using the accesskey attribute.
...for example, under the privacy section of preferences there are three groupboxes captioned: history, cookies, and private data.
...And 4 more matches

How to enable locale switching in a XULRunner application - Archive of obsolete content
modify the application preferences first, you need to tell xulrunner that your application wishes to ignore the default os locale and that it will do its own choosing instead.
... edit the application preferences file and set "intl.locale.matchos" to false.
... your application is now going to ignore the os locale, so it would be a good idea to define one to fall back on using the preference "general.useragent.locale".
...And 4 more matches

Using the W3C DOM - Archive of obsolete content
the method returns a reference to the uniquely identified element, which can then be used to script the element.
...lements correctly, javascript best practices, by matt kruse for accessing a group of elements, the dom specification also includes getelementsbytagname, which returns a nodelist of all the elements with the given tag name in the order they appear in the document: var arrcollection_of_pargs = document.getelementsbytagname("p"); var objfirst_parg = arrcollection_of_pargs[0]; // objfirst_parg will reference the first paragraph in the document objfirst_parg.style.border = "2px solid green"; // and now, the first paragraph in the document // gets a 2px solid green border.
... dom level 2 provides for the assignment of new values to the css properties of an element using the elemref.style object reference.
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LiveConnect Overview - Archive of obsolete content
javaclass a javascript reference to a java class.
... javapackage a javascript reference to a java package.
...for example, you can use the following: var mystring = new java.lang.string("hello world"); instead of the longer version: var mystring = new packages.java.lang.string("hello world"); working with java arrays when any java method creates an array and you reference that array in javascript, you are working with a javaarray.
...And 4 more matches

Choosing the right approach - Learn web development
refer to the reference documentation for the api you're using for more specific support info.
... further information cooperative asynchronous javascript: timeouts and intervals, in particular settimeout() settimeout() reference setinterval() setinterval() is a method that allows you to run a function repeatedly with a set interval of time between each execution.
... further information cooperative asynchronous javascript: timeouts and intervals, in particular setinterval() setinterval() reference requestanimationframe() requestanimationframe() is a method that allows you to run a function repeatedly, and efficiently, at the best framerate available given the current browser/system.
...And 4 more matches

sslcrt.html
this page is part of the ssl reference that we are migrating into the format described in the mdn style guide.
... upgraded documentation may be found in the current nss reference certificate functions chapter 5 certificate functions this chapter describes the functions and related types used to work with a certificate database such as the cert7.db database provided with communicator.
... syntax #include <cert.h> secstatus cert_verifycertname( certcertificate *cert, char *hostname); parameters this function has the following parameters: cert a pointer to the certificate against which to check the hostname referenced by hostname.
...And 4 more matches

nsICookieService
cookie-rejected broadcast whenever the user's preferences cause a cookie to be rejected from being set.
...this parameter may be null, but it is strongly recommended that a non-null value be provided to ensure that the cookie privacy preferences are honored.
... afirsturi the uri that the user originally typed in or clicked on to initiate the load of the document referenced by auri.
...And 4 more matches

nsIDOMWindowInternal
this interface no longer has any members; it exists solely to prevent add-ons that reference it from failing completely.
... self nsidomwindowinternal readonly: returns an object reference to the window object.
... navigator nsidomnavigator readonly: returns a reference to the navigator object.
...And 4 more matches

Working with windows in chrome code
the window.opendialog function works similarly, but lets you specify optional arguments that can be referenced from the javascript code.
...diator: var wm = components.classes["@mozilla.org/appshell/window-mediator;1"] .getservice(components.interfaces.nsiwindowmediator); var browserwindow = wm.getmostrecentwindow("navigator:browser"); // read values from |browserwindow| you might be tempted to use a similar technique to apply the changes the user made in the options dialog, but a better way to do that is to use preferences observers.
... storing shared data in preferences if you just need to store a string or a number, writing a whole xpcom component may be an unnecessary complication.
...And 4 more matches

Add to iPhoto
the core foundation api is implemented by the corefoundation object, which consists of two methods to initialize and shut down the library, a reference to the library, and all the types and methods declared to support core foundation.
... ctypes.void_t, ctypes.voidptr_t); // input: object to release this.cfretain = this.lib.declare("cfretain", ctypes.default_abi, ctypes.void_t, ctypes.voidptr_t); // input: object to retain these methods are used to manage the reference counting for core foundation objects.
...we use a few of these routines because the launch services routine we'll be using to launch iphoto and pass it the image to import uses cfurl for the file references.
...And 4 more matches

Debugger - Firefox Developer Tools
onnewpromise(promise) a new promise object, referenced by the debugger.object instance promise, has been allocated in the scope of the debuggees.
... onpromisesettled(promise) a promise object, referenced by the debugger.object instance promise that was allocated within a debuggee scope, has settled (either fulfilled or rejected).
... the debugger instance does not hold a strong reference to its debuggee globals: if a debuggee global is not otherwise reachable, then it is dropped from the debugger’s set of debuggees.
...And 4 more matches

Web Console remoting - Firefox Developer Tools
actor preferences to allow the web console to configure logging options while it is running, we have added the setpreferences packet: { "to": "conn0.console9", "type": "setpreferences", "preferences": { "networkmonitor.saverequestandresponsebodies": false } } reply: { "updated": [ "networkmonitor.saverequestandresponsebodies" ], "from": "conn0.console10" } for convenience you can use ...
...webconsoleclient.setpreferences(prefs, onresponse).
... in firefox 25 we added the getpreferences request packet: { "to": "conn0.console34", "type": "getpreferences", "preferences": [ "networkmonitor.saverequestandresponsebodies" ] } reply packet: { "preferences": { "networkmonitor.saverequestandresponsebodies": false }, "from": "conn0.console34" } you can also use the webconsoleclient.getpreferences(prefs, onresponse).
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about:debugging (before Firefox 68) - Firefox Developer Tools
whether or not system add-ons appear in the list on this page depends on the setting of the devtools.aboutdebugging.showsystemaddons preference.
... the "enable add-on debugging" button works by turning on the devtools.chrome.enabled and devtools.debugger.remote-enabled preferences.
... both preferences must be true to enable add-on debugging.
...And 4 more matches

GamepadEvent - Web APIs
the gamepadevent interface of the gamepad api contains references to gamepads connected to the system, which is what the gamepad events window.gamepadconnected and window.gamepaddisconnected are fired in response to.
...d implemented with the vendor prefix: webkitedge full support ≤18firefox full support 29 full support 29 no support 24 — 28disabled disabled from version 24 until version 28 (exclusive): this feature is behind the dom.gamepad.enabled preference (needs to be set to true).
... to change preferences in firefox, visit about:config.ie no support noopera full support 22 full support 22 no support 15 — 21prefixed prefixed implemented with the vendor prefix: webkitsafari full support 10.1webview android no support nochrome android full support yesfirefox android full support 32opera android full support 22 full support 22 no support ...
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HTMLAnchorElement - Web APIs
htmlhyperlinkelementutils.hash is a usvstring representing the fragment identifier, including the leading hash mark ('#'), if any, in the referenced url.
... htmlhyperlinkelementutils.host is a usvstring representing the hostname and port (if it's not the default port) in the referenced url.
... htmlhyperlinkelementutils.hostname is a usvstring representing the hostname in the referenced url.
...And 4 more matches

HTMLAreaElement - Web APIs
htmlhyperlinkelementutils.hash is a usvstring containing the fragment identifier (including the leading hash mark (#)), if any, in the referenced url.
... htmlhyperlinkelementutils.host is a usvstring containing the hostname and port (if it's not the default port) in the referenced url.
... htmlhyperlinkelementutils.hostname is a usvstring containing the hostname in the referenced url.
...And 4 more matches

PaymentAddress.toJSON() - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox 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.
... requires the comma-delineated list in dom.payments.request.supportedregions to contain one or more of the supported 2-character iso locales, currently us and ca.disabled from version 62: this feature is behind the dom.payments.request.enabled preference (needs to be set to true).
...And 4 more matches

Viewpoints and viewers: Simulating cameras in WebXR - Web APIs
there are a few articles about the fundamental math, geometry, and other concepts behind webgl and webxr which may be useful to read before or while reading this one, including: explaining basic 3d theory matrix math for the web webgl model view projection geometry and reference spaces in webxr ed.
...fortunately, physicists like galileo, newton, lorentz, and einstein have given us the principle of relativity, which states that the laws of physics have the same form in every frame of reference.
...for more detail on the subject, see the articles geometry and reference spaces, webgl model view projection, and matrix math for the web.
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XRSessionInit - Web APIs
at this time, all features are identified using strings from the xrreferencespacetype enumeration, but future updates to the webxr standard may add more features.
...these values currently must come from the enumerated type xrreferencespacetype.
... default features immersive sessions all immersive (both immersive-vr and immersive-ar) sessions support both the viewer and local reference spaces.
...And 4 more matches

Using the application cache - HTML: Hypertext Markup Language
how the application cache works enabling the application cache to enable the application cache for an application, include the manifest attribute in the <html> element: <html manifest="/example.appcache"> … </html> the manifest attribute references a url for a cache manifest file: a text file that lists urls that browsers should cache for your application.
... storage location and clearing the offline cache in chrome you can clear the offline cache by selecting "clear browsing data..." in the preferences or by visiting chrome://appcache-internals/.
... safari has a similar "empty cache" setting in its preferences but a browser restart may also be required.
...And 4 more matches

CSS Houdini
the houdini apis below you can find links to the main reference pages covering the apis that fall under the houdini umbrella, along with links to guides to help you if you need guidance in learning how to use them.
... no guide or reference has currently been written for this api.
... css properties and values api reference css properties and values api guide css typed om converting cssom value strings into meaningfully typed javascript representations and back can incur a significant performance overhead.
...And 4 more matches

Grammar and types - JavaScript
(for more information, see the detailed reference about javascript's lexical grammar.) it is considered best practice, however, to always write a semicolon after a statement, even when it is not strictly needed.
... an attempt to access an undeclared variable results in a referenceerror exception being thrown: var a; console.log('the value of a is ' + a); // the value of a is undefined console.log('the value of b is ' + b); // the value of b is undefined var b; // this one may puzzle you until you read 'variable hoisting' below console.log('the value of c is ' + c); // uncaught referenceerror: c is not defined let x; console.log('the value of x is ' + x); // the value o...
...f x is undefined console.log('the value of y is ' + y); // uncaught referenceerror: y is not defined let y; you can use undefined to determine whether a variable has a value.
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WebAssembly.Table.prototype.set() - JavaScript
the set() prototype method of the webassembly.table object mutates a reference stored at a given index to a different value.
... syntax table.set(index, value); parameters index the index of the function reference you want to mutate.
... value the value you want to mutate the reference to.
...And 4 more matches

this - JavaScript
syntax this value a property of an execution context (global, function or eval) that, in non–strict mode, is always a reference to an object and in strict mode can be any value.
... class base {} class good extends base {} class alsogood extends base { constructor() { return {a: 5}; } } class bad extends base { constructor() {} } new good(); new alsogood(); new bad(); // referenceerror examples this in function contexts // an object can be passed as the first argument to call or apply and this will be bound to it.
...var obj = { bar: function() { var x = (() => this); return x; } }; // call bar as a method of obj, setting its this to obj // assign a reference to the returned function to fn var fn = obj.bar(); // call fn without setting this, would normally default // to the global object or undefined in strict mode console.log(fn() === obj); // true // but caution if you reference the method of obj without calling it var fn2 = obj.bar; // calling the arrow function's this from inside the bar method() // will now return window, because it follows the...
...And 4 more matches

var - JavaScript
'use strict'; function foo() { var x = 1; function bar() { var y = 2; console.log(x); // 1 (function `bar` closes over `x`) console.log(y); // 2 (`y` is in scope) } bar(); console.log(x); // 1 (`x` is in scope) console.log(y); // referenceerror in strict mode, `y` is scoped to `bar` } foo(); variables declared using var are created before any code is executed in a process known as hoisting.
... 'use strict'; console.log(x); // undefined (note: not referenceerror) console.log('still going...'); // still going...
...assignment to an unqualified identifier in strict mode will result in a referenceerror, to avoid the accidental creation of properties on the global object.
...And 4 more matches

with - JavaScript
otherwise a referenceerror is thrown.
... performance pro & contra pro: the with statement can help reduce file size by reducing the need to repeat a lengthy object reference without performance penalty.
...use of 'with' will relieve the interpreter of parsing repeated object references.
...And 4 more matches

context-menu - Archive of obsolete content
if the total number of menu items in the main context menu from all add-ons exceeds a certain number (normally 10 but configurable with the extensions.addon-sdk.context-menu.overflowthreshold preference) all of the menu items will instead appear in an overflow menu to avoid making the context menu too large.
... var selection = require("sdk/selection"); and within the contentscript, reference the selected text as selection.text private windows if your add-on has not opted into private browsing, then any menus or menu items that you add will not appear in context menus belonging to private browser windows.
...the url can be remote, a reference to an image in the add-on's data directory, or a data uri.
...And 3 more matches

console - Archive of obsolete content
there are two system preferences that can be used to override this default: extensions.sdk.console.loglevel: if set, this determines the logging level for all installed sdk-based add-ons.
...this overrides the global preference if both preferences are set.
... both these preferences can be set programmatically using the preferences/service api, or manually using about:config.
...And 3 more matches

jpm - Archive of obsolete content
this is the reference page for jpm.
... command reference jpm supports the following commands: jpm init create a skeleton add-on as a starting point for your add-on.
... --no-copy use with caution because jpm run|test changes many preferences, never use with your main profile.
...And 3 more matches

JavaScript Client API - Archive of obsolete content
the best, and most up-to-date, reference to sync's internal apis is the source code.
...there is an engine for bookmarks, tabs, history, preferences, etc.
...the tabs and preferences engines work that way.
...And 3 more matches

Adding Methods to XBL-defined Elements - Archive of obsolete content
you can call the method by using code such as element.getmaximum(5, 10) where element is a reference to an element defined by the xbl containing the getmaximum method.
...instead, you must call the document's getanonymousnodes() method: var value=document.getanonymousnodes(element); here, 'element' should be set to a reference to the element that you want to get the anonymous content of.
... the following example creates a row of buttons: <binding id="buttonrow"> <content> <button label="yes"/> <button label="no"/> <button label="sort of"/> </content> </binding> to refer to each button, you can use the getanonymousnodes() function, passing it a reference to the element the binding is bound to as the parameter.
...And 3 more matches

Modifying a XUL Interface - Archive of obsolete content
the button element has two attributes "label" and "oncommand" a javascript function named "addbutton()" this script first gets a reference to the box with getelementbyid(), which is the container to add a new button to.
... the function getelementbyid() does not know that the box it is looking for happens to be containing the tag that has the oncommand attribute that referenced it.
...the syntax of these functions is as follows: parent.appendchild(child); parent.insertbefore(child, referencechild); parent.replacechild(newchild, oldchild); parent.removechild(child); it should be fairly straightforward from the function names what these functions do.
...And 3 more matches

XUL Structure - Archive of obsolete content
by accessing a file using a chrome url, the files receive elevated privileges to access local files, access preferences and bookmarks and perform other privileged operations.
...to disable this mechanism, it is necessary to change the preference nglayout.debug.disable_xul_cache.
... in firefox, this preference may be added to the user preferences by typing "about:config" in the address field, and setting this value to true.
...And 3 more matches

The Implementation of the Application Object Model - Archive of obsolete content
the second section describes the xul/rdf architecture itself and outlines enhancements to the xul language in order to allow the markup language to reference local data and to indicate how and when it would like to be annotatable with local data.
... the first reason to have local/remote merging is that a remote file must be able to reference local data and have it merged in with the information that it specified.
... referencing local data: the localdata attribute a tag that references local rdf data does so by using the localdata attribute, which gives the uri of the local data that should be merged in with the xul content tree.
...And 3 more matches

Extentsions FAQ - Archive of obsolete content
why does his extension not able to read the contents of a folder and then produce a segmentation fault after his extension reads preferences in thunderbird?
... does firefox clean up the preferences set by extension?
... firefox will clean all those preferences which are still "default", that is not changed by the user or the application/extension.
...And 3 more matches

NPObject - Archive of obsolete content
« gecko plugin api reference « scripting plugins summary npobject is a structure that holds a pointer to an npclass and an integer reference count, and possibly also implementation specific (i.e.
...npobjects are reference counted objects, so callers need to be careful to properly release acquired references to them.
... to aid with the reference counting and ownership management in general, the functions npn_createobject(), npn_retainobject(), npn_releaseobject(), and npn_releasevariantvalue() are provided as part of this api.
...And 3 more matches

Theme changes in Firefox 2 - Archive of obsolete content
preferences/downloads.xul - removed from firefox 2.
... preferences/general.xul - removed from firefox 2.
... toolkit/mozapps/preferences/fontscaling.xul - removed from firefox 2.
...And 3 more matches

Introduction to events - Learn web development
you can gather from this (and from glancing at the mdn event reference) that there are a lot of events that can be responded to.
...tton>change color</button> button { margin: 10px }; the javascript looks like so: const btn = document.queryselector('button'); function random(number) { return math.floor(math.random() * (number+1)); } btn.onclick = function() { const rndcol = 'rgb(' + random(255) + ',' + random(255) + ',' + random(255) + ')'; document.body.style.backgroundcolor = rndcol; } in this code, we store a reference to the button inside a constant called btn, using the document.queryselector() function.
...these are a little out of scope for this article, but if you want to read them, visit the addeventlistener() and removeeventlistener() reference pages.
...And 3 more matches

Embedding API for Accessibility
there are many other pieces, such as preferences to allow the user to change foreground and background colors, and font sizes.
...for double-sized text, use nsidomwindow::settextzoom(2.0); using accessibility preferences there are a number of prefs related to accessibility.
...scomptr<nsipref> prefs(do_getservice(ns_pref_contractid, &rv)); prefs->setboolpref("bool.pref.name", pr_true /* or pr_false */); prefs->setintpref("int.pref.name", newvalue); prefs->setcharpref("string.pref.name", newcharstarvalue); to manually add a pref to your settings, add a line like the following to your prefs.js: user_pref("accessibility.browsewithcaret", true); accessibility prefs reference the following is a description of what accessibility prefs give us (or will give us), for accessibility: functionality implementation works as of images setintpref("network.image.imagebehavior", behavior); /* behavior: 0=accept, 1=accept images from originating server on...
...And 3 more matches

Multiprocess on Windows
as you should already know, you can't directly touch a com object's reference count unless you're already inside the apartment which contains that object.
...the mscom library provides a set of smart pointers that are aware of com apartments: mscom smart pointer types pointer type release semantics stauniqueptr<t> forces reference to be released on the main thread.
... mtauniqueptr<t> forces reference to be released on an mta thread.
...And 3 more matches

Creating reftest-based unit tests
to run all the reftests, go to the directory where you save firefox's source code and run: ./mach reftest if you want to run a particular set of reftests, pass the path as an argument: ./mach reftest path/from/sourcedir/reftest.list and to run a single reftest just pass the path to the test file (not the reference file): ./mach reftest path/from/sourcedir/reftest-name.html there is no reftest equivalent to mach mochitest --keep-open, but temporarily adding the reftest-wait class to a test (or disabling the script that removes it) will keep it open longer.
...more information on this file can be found in the readme.txt referenced below, which was written by the creator of the reftest tool.
...one should be able to "snap a picture" of the glyph as it should be displayed and then the reference page would include that graphic in an <img> element.
...And 3 more matches

Eclipse CDT Manual Setup
below.) initial workspace preferences when you open eclipse, it will ask you to "select a workspace" (a directory where eclipse will store files that it generates during indexing, and so on.) it's recommended that you have a separate workspace containing only a single project for each mozilla source tree [rational], and that you choose a directory outside the mozilla source.
... to avoid confusion in this and the following sections, note that "workspace preferences" and "project properties" are different things (we'll get to the details below).
... whenever you create a new workspace for a mozilla source tree, you should be sure to turn off the following two settings in the workspace preferences (window > preferences, or eclipse > preferences) before creating a project in that workspace: in "general > workspace", disable "build automatically" in "c/c++ > indexer", disable "automatically update the index" turning off automatic indexing prevents the cpu intensive indexer from running at various stages during the steps below before we're ready.
...And 3 more matches

IME handling guide
it depends on the result of nsiwidget::getimeupdatepreference() what is observed.
...note that some of them are notified only when nsiwidget::getimeupdatepreference() returns flags which request the notifications.
... when widget wants notifications during deactive, widget includes notify_during_deactive to the result of nsiwidget::getimeupdatepreference().
...And 3 more matches

Introduction to NSPR
setting thread priorities preempting threads interrupting threads for reference information on the nspr api used for thread scheduling, see threads.
...at best they are intended to specify a preference with respect to the amount 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.
...And 3 more matches

ssltyp.html
this page is part of the ssl reference that we are migrating into the format described in the mdn style guide.
... upgraded documentation may be found in the current nss reference selected ssl types and structures chapter 3 selected ssl types and structures this chapter describes some of the most important types and structures used with the functions described in the rest of this document, and how to manage the memory used for them.
...some of these functions also use types defined by nspr and described in the nspr reference.
...And 3 more matches

Rhino serialization
upon deserialization the initial object and the objects it refers to are all created and the references between the objects are resolved.
...javascript objects contain references to prototypes and to parent scopes.
...we want to be able to serialize a javascript object and then deserialize it into a new scope and have all of the references from the deserialized object to prototypes and parent scopes resolved correctly to refer to objects in the new scope.
...And 3 more matches

JS::CompileOptions
source belongs to a dom element in the following cases: source belongs to a <script> element if it is the element's text content (that is, it is written out as the body of the <script> element in the markup text), or is the source document referenced by its src attribute.
... description in the most common use case, a compileoptions instance is allocated on the stack, and holds non-owning references to non-pod option values: strings; principals; objects; and so on.
... the code declaring the instance guarantees that such option values will outlive the compileoptions itself: objects are otherwise rooted; principals have had their reference counts bumped; strings will not be freed until the compileoptions goes out of scope.
...And 3 more matches

Split object
suppose a script in page a, in tab ta, has a reference to the window object of page b in another tab tb.
... (the problem is even a bit subtler than this, since the reference may be direct or indirect.
... the script in a might have opened tb by calling window.open, which returns a direct reference to tb's window.
...And 3 more matches

TPS Tests
the python test runner will read a test file (in javascript format), setup one or more firefox profiles with the necessary extensions and preferences, then launch firefox and pass the test file to the extension.
...in particular, it will set preferences from the "preferences" property, and so you can set the "identity.fxaccounts.autoconfig.uri" preference to point to any fxa server you want.
... "fx_account": { "username": "foobar@restmail.net", "password": "hunter2" }, "preferences": { // use "https://stable.dev.lcip.org" for dev instead of stage "identity.fxaccounts.autoconfig.uri": "https://accounts.stage.mozaws.net" // possibly more preferences...
...And 3 more matches

Mork
mid ( metatable | row | '-' | rowreference)* '}' row = '[' '-'?
... mid ( cell | metarow | '-' )* ']' group = '@$${' hex '{@' (dictionary|table|row)* ('@$$}' hex '}@' | '@$$}~~}@') metadictionary = '<' cell* '>' metatable = '{' ( cell | row | rowreference )* '}' metarow = '[' cell* ']' rowreference = hex ( '!' hex )?
...the presence of a row or rowreference in the meta-table indicates that said row is the meta-row of the table: it contains arbitrary properties for the entire table just like a normal row.
...And 3 more matches

nsIMsgDBHdr
nt32property(in string propertyname, in unsigned long propertyval); void markread(in boolean read); void markflagged(in boolean flagged); void markhasattachments(in boolean hasattachments); void setprioritystring(in string priority); unsigned long orflags(in unsigned long flags); unsigned long andflags(in unsigned long flags); void setreferences(in string references); acstring getstringreference(in long refnum); void setrecipientsarray(in string names, in string addresses,in unsigned long numaddresses); void setcclistarray(in string names, in string addresses,in unsigned long numaddresses); void setbcclistarray(in string names, in string addresses,in unsigned long numaddresses);new in thunderbird 3.1 ...
... numreferences unsigned short readonly: indicates the number of references this header has.
... setreferences() void setreferences(in string references); parameters references sets the list of references for a news message.
...And 3 more matches

nsIMutableArray
weak whether or not to store the element using a weak reference.
... exceptions thrown ns_error_failure when a weak reference is requested, but the element does not support nsiweakreference.
... weak whether or not to store the element using a weak reference.
...And 3 more matches

nsISessionStore
1.0 66 introduced gecko 1.8 inherits from: nsisupports last changed in gecko 2.0 (firefox 4 / thunderbird 3.3 / seamonkey 2.1) in versions of firefox prior to 3.5, the user preference browser.sessionstore.enabled must be true for these calls to be successful.
... starting in firefox 3.5, this preference is no longer used.
... if the preference browser.sessionstate.enabled is false when this method is called, then you will get an exception about "awindows[i] has no properties".
...And 3 more matches

Dominators view - Firefox Developer Tools
this is useful for understanding the "retained size" of objects allocated by your site: that is, the size of the objects themselves plus the size of the objects that they keep alive through references.
... any other node that's referenced from two different roots (since in this case, neither root dominates it).
...if you suspect that an object is being leaked, this will show you exactly which objects are holding a reference to it.
...And 3 more matches

Settings - Firefox Developer Tools
there's a light theme, which is the default: a dark theme: common preferences settings that apply to more than one tool.
... if common preferences is not included in the settings, web console logs can be persisted by using the 'about:config' url in browser address bar, searching for: 'devtools.webconsole.persistlog' then toggling this value to true inspector show browser styles a setting to control whether styles applied by the browser (user-agent styles) should be displayed in the inspector's rules view.
...this setting works by toggling the about:config preference "devtools.markup.collapseattributes".
...And 3 more matches

Node.insertBefore() - Web APIs
the node.insertbefore() method inserts a node before a reference node as a child of a specified parent node.
... syntax let insertednode = parentnode.insertbefore(newnode, referencenode) insertednode the node being inserted (the same as newnode) parentnode the parent of the newly inserted node.
... referencenode the node before which newnode is inserted.
...And 3 more matches

NodeIterator - Web APIs
nodefilter.show_entity_reference 16 shows entityreference nodes.
... nodeiterator.expandentityreferences read only is a boolean indicating if, when discarding an entityreference its whole sub-tree must be discarded at the same time.
... nodeiterator.referencenode read only returns the node to which the iterator is anchored.
...And 3 more matches

Taking still photos with WebRTC - Web APIs
video this will be a reference to the <video> element after the page is done loading.
... canvas this will be a reference to the <canvas> element after the page is done loading.
... photo this will be a reference to the <img> element after the page is done loading.
...And 3 more matches

Rendering and the WebXR frame animation callback - Web APIs
this begins with getting the reference space in which you want to draw, with its origin and orientation set at the viewer's starting position and viewing direction.
... kicking off the renderer thus looks like this: let worldrefspace; async function runxr(xrsession) { worldrefspace = await xrsession.requestreferencespace("immersive-vr"); if (worldrefspace) { viewerrefspace = worldrefspace.getoffsetreferencespace( new xrrigidtransform(viewerstartposition, viewerstartorientation)); animationframerequestid = xrsession.requestanimationframe(mydrawframe); } } after getting a reference space for the immersive world, this creates an offset reference space representing the position and orientation of the viewer by creating an xrrigidtransf...
...orm representing that position and orientation, then calling the xrreferencespace method getoffsetreferencespace().
...And 3 more matches

XRRigidTransform.position - Web APIs
example to create a reference space which can be used to place an object at eye level (assuming eye level is 1.5 meters): function onsessionstarted(xrsession) { xrsession.addeventlistener("end", onsessionended); gl = initgraphics(xrsession); let gllayer = new xrwebgllayer(xrsession, gl); xrsession.updaterenderstate({ baselayer: gllayer }); if (immersivesession) { xrsession.requestreferencespace("bounded-floo...
...r").then((refspace) => { refspacecreated(refspace); }).catch(() => { session.requestreferencespace("local-floor").then(refspacecreated); }); } else { session.requestreferencespace("viewer").then(refspacecreated); } } function refspacecreated(refspace) { if (immersivesession) { xrreferencespace = refspace; } else { xrreferencespace = refspace.getoffsetreferencespace( new xrrigidtransform({y: -1.5}); ); } xrsession.requestanimationframe(onframe); } after setting up the graphics context for webxr use, this begins by looking to see if a variable immersivesession is true; if so, we first request a bounded-floor reference space.
... if that fails (probably because bounded-floor isn't supported), we try requesting a local-floor reference space.
...And 3 more matches

prefers-reduced-motion - CSS: Cascading Style Sheets
syntax no-preference indicates that the user has made no preference known to the system.
... user preferences for firefox, the reduce request is honoured if: in gtk/gnome: gnome tweaks > general tab (or appearance, depending on version) > animations is turned off.
... in macos: system preferences > accessibility > display > reduce motion.
...And 3 more matches

Introduction to Web development - Developer guides
html elements reference guide — a comprehensive guide to html elements with details on how browsers support them css getting started with css — an absolute beginners guide to css covers basic concepts and fundamentals css reference guide — a complete guide to css with details on the level of gecko/firefox support for each.
... javascript reference guide — a comprehensive, regularly updated guide to javascript for all levels of learning from beginner to advanced.
... sitepoint a reliable reference site for learning html, css and javascript which also mentions feature support across different browsers and known browser bugs.
...And 3 more matches

Keyed collections - JavaScript
see also the map reference page for more examples and the complete api.
...the object references in the keys are held weakly, meaning that they are a target of garbage collection (gc) if there is no other reference to the object anymore.
... for more information and example code, see also "why weakmap?" on the weakmap reference page.
...And 3 more matches

TypeError: cyclic object value - JavaScript
the javascript exception "cyclic object value" occurs when object references were found in json.
... message typeerror: cyclic object value (firefox) typeerror: converting circular structure to json (chrome and opera) typeerror: circular reference in value argument not supported (edge) error type typeerror what went wrong?
... the json format per se doesn't support object references (although an ietf draft exists), hence json.stringify() doesn't try to solve them and fails accordingly.
...And 3 more matches

Install Manifests - Archive of obsolete content
required property reference your install manifest must specify these properties correctly otherwise your add-on may not install.
... optional property reference you may need to supply these properties, depending on the capabilities of your add-on.
... note: if you want to restore the old behavior of strict compatibility checking of all add-ons, regardless of the value of this setting in their manifests, you can set the extensions.strictcompatibility preference to true.
...And 2 more matches

Appendix B: Install and Uninstall Scripts - Archive of obsolete content
the best approach in this case is to use a preference, as explained in the handling preferences section.
... } } in this case you would need to declare the first run preference in your default preferences file, with a default value of false.
... you should also change the preference value before you run any other first run code.
...And 2 more matches

Making it into a static overlay - Archive of obsolete content
static overlays are added to a xul file via a reference at the top of the file (much like stylesheets and javascript scripts).
... dynamic overlays are added to a xul file via a reference in the chrome registry.
...its next line is the stylesheet reference we previously added to navigator.xul.
...And 2 more matches

Getting Started - Archive of obsolete content
on every line that references <code>classic.jar we need to make some changes (there are about 5 lines).
...open the preferences dialog box and take a look at all of the buttons in there.
...creating the install script getting it ready for the installation before we can package everything up for installation, we need to remove all references to classic.
...And 2 more matches

Tuning Pageload - Archive of obsolete content
this document explains which preferences to tweak to affect your pageload time.
...to best understand what the following preferences affect, there are a few things you should know.
... nglayout.initialpaint.delay this is a preference that specifies a delay, in milliseconds, after the data from the server has started coming in.
...And 2 more matches

Elements - Archive of obsolete content
css: div { -moz-binding: url(mybinding.xml#default); } dom: elementreference.style.mozbinding = "url(mybinding.xml#default)"; in both cases above we are using binding with id="default" contained in file mybinding.xml starting with firefox 3, you can also use a data: url to embed the binding inline: div { -moz-binding: url(data:text/xml;charset=utf-8,%3c%3fxml%20version%3d%221.0%22%3f%3e%0a%3cbindings%20id%3d%22xbltestbindings%22%20xmlns%3d%22http%3a//www.mozilla.or...
...this name can then be used to reference the implementation.
...if no name attribute is specified then the binding's document uri and id are used to uniquely reference the binding's implementation.
...And 2 more matches

browser - Archive of obsolete content
« xul reference home [ examples | attributes | properties | methods | related ] a xul <browser> element represents a frame which is expected to contain a view of a web document.
...eteenabled, autocompletepopup, autoscroll, disablehistory, disableglobalhistory, disablesecurity, droppedlinkhandler, homepage, showcaret, src, type properties accessibletype, cangoback, cangoforward, contentdocument, contentprincipal, contenttitle, contentvieweredit, contentviewerfile, contentwindow, currenturi, docshell, documentcharsetinfo, homepage, markupdocumentviewer, messagemanager, preferences, securityui, sessionhistory, webbrowserfind, webnavigation, webprogress methods addprogresslistener, goback, goforward, gohome, gotoindex, loaduri, loaduriwithflags, reload, reloadwithflags, removeprogresslistener, stop, swapdocshells examples <!-- shows mozilla homepage inside a groupbox --> <groupbox flex="1"> <caption label="mozilla homepage"/> <browser type="content" src="http:...
...if this attribute is set to true or omitted, autoscroll will be enabled or depending on the user preference general.autoscroll.
...And 2 more matches

Getting started with XULRunner - Archive of obsolete content
here is the subfolder structure: + myapp/ | +-+ chrome/ | | | +-+ content/ | | | | | +-- main.xul | | | | | +-- main.js | | | +-- chrome.manifest | +-+ defaults/ | | | +-+ preferences/ | | | +-- prefs.js | +-- application.ini | +-- chrome.manifest notice that there are 5 files in the folder structure: application.ini, chrome.manifest (2), prefs.js, and main.xul.
...here is the application root chrome.manifest: manifest chrome/chrome.manifest step 6: set up preferences the prefs.js file tells xulrunner the name of the xul file to use as the main window.
...*/ pref("browser.dom.window.dump.enabled", true); pref("javascript.options.showinconsole", true); pref("javascript.options.strict", true); pref("nglayout.debug.disable_xul_cache", true); pref("nglayout.debug.disable_xul_fastload", true); xulrunner specific preferences include: toolkit.defaultchromeuri specifies the default window to open when the application is launched.
...And 2 more matches

MacFAQ - Archive of obsolete content
to do this, type: xulrunner-bin --install-app /path/to/appdir note the path to your application must end with the directory containing application.ini; you should not reference application.ini in this command.
...to enable the mac "about" menu make sure that you use "aboutname" as the id for your menu item to enable the mac "preferences" menu make sure that you use "menu_preferences" as the id for your options/preferences menu item toolbars mac windows have a small "jelly bean" button in the top right corner.
... taking advantage of the core code "openurl" from "nscommandlineservicemac.cpp", you'll see that it looks for "browser.chromeurl" before defaulting to navigator.xul, and this is called when an xulrunner app is already running, so: create a default preference of "browser.chromeurl" that points to your new "hiddenwindow" as such: "chrome://myxul/content/hiddenwindow.xul" next take the code below and drop it in, to create the hiddenwindow.xul (note: the debug function and nsicommandline try/catch can be removed, all you need is the window.arguments[0]) <?xml version="1.0"?> <window xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul...
...And 2 more matches

Specifying Startup Chrome Window - Archive of obsolete content
main chrome window in order to specify the main chrome window of your xulrunner application, you'll need to add a preferences file to your application directory structure and add a preference named toolkit.defaultchromeuri to that file.
...it's directory structure is as follows: xulmine ├───chrome ├───components └───defaults └───preferences in defaults/preferences, there is a file named xulmine.js.
... its contents are: pref("toolkit.defaultchromeuri", "chrome://xulmine/content/xulmine.xul"); the toolkit.defaultchromeuri preference specifies that the xul window at chrome://xulmine/content/xulmine.xul is the main application window.
...And 2 more matches

Archived Mozilla and build documentation - Archive of obsolete content
see the references section for information on creating extension in earlier browsers.
...web pages can reference generators via <link rel="microsummary"> elements in their <head> elements.
... download manager preferences there are several preferences used by the download manager.
...And 2 more matches

Gecko Compatibility Handbook - Archive of obsolete content
** notes ** - the solution quick reference needs more attention.
... solution quick reference as discussed in mozilla's using web standards in your web pages, coding for cross-browser compatibility requires you write standard markup that gecko-based browsers, netscape 4, and ie browsers can render properly.
...(related article) stylesheet is not being recognized the presence of the title attribute in a link element that references an external stylesheet can cause the stylesheet may be causing the external stylesheet to be ignored.
...And 2 more matches

Common Firefox theme issues and solutions - Archive of obsolete content
in order to work around this issue, you need to either rename any of the following files that are in your chrome://browser/skin/ folder and fix any references to those files, or copy them to the folder chrome://browser/skin/lion/: keyhole-circle.png toolbar.png toolbarbutton-dropmarker.png tabbrowser/alltabs-box-bkgnd-icon.png tabview/tabview.png places/toolbar.png linux linux select box fields are showing both drop arrow and spinner arrows on linux: the styling of drop down select box fields may show both a drop arrow and up/down spinner ...
...the fix is to make sure any style rule that references #appmenu-button also has a comparable reference to #appmenu-toolbar-button in chrome://browser/skin/browser.css.
...the common cause of this is style rules that reference [iconsize="small"] without excluding [mode="text"].
...And 2 more matches

Browser Feature Detection - Archive of obsolete content
et explorer 6 / 7 dom core 1 100% 100% 100% 75% / 91% 75% / 75% dom core 2 100% 100% 100% 70% / 94% 58% / 58% dom 1 html 100% 100% 100% 100% / 100% 100% / 100% dom css 1 100% 100% 100% 100% / 100% 96% / 96% dom css 2 100% 98% 67% 71% / 83% 38% / 42% test results cross reference dom core level 1 support for properties/methods in document name firefox 1.5 ie 6 & 7 opera 8.54 - 9.01 document.doctype true true true document.implementation true true true document.documentelement true true true document.createelement() true true true document.createdocumentfragment() true ...
... true true document.createtextnode() true true true document.createcomment() true true true document.createcdatasection() true false true document.createprocessinginstruction() true false true document.createattribute() true true true document.createentityreference()obsolete since gecko 7 (method present but only returns null: bug 9850) false false document.getelementsbytagname() true true true dom core level 2 support for properties/methods in document name firefox 1.5 ie 6 & 7 opera 8.54 - 9.01 document.doctype true true true document.implementation true true true document.documentelement true ...
...cument.createdocumentfragment() true true true document.createtextnode() true true true document.createcomment() true true true document.createcdatasection() true false true document.createprocessinginstruction() true false true document.createattribute() true true true document.createentityreference()obsolete since gecko 7 true false false document.getelementsbytagname() true true true document.importnode() true false true document.createelementns() true false true document.createattributens() true false true document.getelementsbytagnamens() true false true document.getelementbyid() ...
...And 2 more matches

JavaPackage - Archive of obsolete content
summary core object a javascript reference to a java package.
... created by a reference to the package name used with the packages keyword: packages.javapackage javapackageis the name of the object's java package.
... in javascript, a javapackage is a reference to a java package.
...And 2 more matches

Sharp variables in JavaScript - Archive of obsolete content
a sharp variable is a syntax in object initializers that allows serialization of objects that have cyclic references or multiple references to the same object.
... #1 = {}; // this doesn't do much since the sharp variable is out of scope immediately after a = #2 = {}; // slightly more useful since we retain a reference to the new object to reference the sharp variable, simply append another sharp (#) to the end of the variable name.
... this acts as a reference to initial variable.
...And 2 more matches

Archive of obsolete content
it's here for historical reference only.
... adding preferences to an extension this article takes the creating a dynamic status bar extension sample to the next level, adding a popup menu that lets you quickly switch between multiple stocks to watch.
... it also adds a preference dialog that lets you switch to a stock other than one of the ones included in the popup menu.
...And 2 more matches

Styling lists - Learn web development
the unstyled example is available on github (check out the source code too.) the html for our list example looks like so: <h2>shopping (unordered) list</h2> <p>paragraph for reference, paragraph for reference, paragraph for reference, paragraph for reference, paragraph for reference, paragraph for reference.</p> <ul> <li>hummus</li> <li>pita</li> <li>green salad</li> <li>halloumi</li> </ul> <h2>recipe (ordered) list</h2> <p>paragraph for reference, paragraph for reference, paragraph for reference, paragraph for reference, paragraph for reference, paragraph for refer...
...ence.</p> <ol> <li>toast pita, leave to cool, then slice down the edge.</li> <li>fry the halloumi in a shallow, non-stick pan, until browned on both sides.</li> <li>wash and chop the salad.</li> <li>fill pita with salad, hummus, and fried halloumi.</li> </ol> <h2>ingredient description list</h2> <p>paragraph for reference, paragraph for reference, paragraph for reference, paragraph for reference, paragraph for reference, paragraph for reference.</p> <dl> <dt>hummus</dt> <dd>a thick dip/sauce generally made from chick peas blended with tahini, lemon juice, salt, garlic, and other ingredients.</dd> <dt>pita</dt> <dd>a soft, slightly leavened flatbread.</dd> <dt>halloumi</dt> <dd>a semi-hard, unripened, brined cheese with a higher-than-usual melting point, usually made from goa...
... the <dd> elements have margin-left of 40px (2.5em.) the <p> elements we've included for reference have a top and bottom margin of 16px (1em), the same as the different list types.
...And 2 more matches

Drawing graphics - Learn web development
now add the following lines of javascript inside the <script> element: const canvas = document.queryselector('.mycanvas'); const width = canvas.width = window.innerwidth; const height = canvas.height = window.innerheight; here we have stored a reference to the canvas in the canvas constant.
...to draw onto the canvas we need to get a special reference to the drawing area called a context.
...the simplest version takes three parameters — a reference to the image you want to render, and the x and y coordinates of the image's top left corner.
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Handling common JavaScript problems - Learn web development
go to atom's preferences...
...by choosing atom > preferences...
... on mac, or file > preferences...
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Setting up your own test automation environment - Learn web development
you can feel free to change the references to some of the other browsers we added, remove them, etc., depending on what browsers you have available to test on your operating system.
...in terms of what string to use inside the .forbrowser() method for other browsers, see the browser enum reference page.
...for more complete details, you should consult the selenium-webdriver javascript api reference for a detailed reference, and the selenium main documentation's selenium webdriver and webdriver: advanced usage pages, which contain multiple examples to learn from written in different languages.
...And 2 more matches

Adding phishing protection data providers
installing a new data provider to install a data provider for phishing protection, it's necessary to set a series of preferences to provide details about the provider.
... you can find examples of how to read and write preferences in the article adding preferences to an extension.
... required preferences browser.safebrowsing.provider.idnum.name a human-readable name for the data provider.
...And 2 more matches

Chrome registration
if more than one locale is registered for a package, the chrome registry will select the best-fit locale using the user's preferences.
...if more than one skin is registered for a package, the chrome registry will select the best-fit skin using the user's preferences.
... contentaccessible chrome resources can no longer be referenced from within <img>, <script>, or other elements contained in, or added to, content that was loaded from an untrusted source.
...And 2 more matches

Eclipse CDT
in principle, you can set the index to rebuild automatically by opening the workspace preferences, selecting "c/c++ > indexer", and reenabling "automatically update the index".
...you can change the key bindings by opening the workspace preferences (eclipse > preferences, or window > preferences) and selecting "general > keys".
...isn't library_path for compile time, not runtime, linking?) in the workspace preferences, you may want to go to "c/c++ > debug > gdb" and deselect "stop on startup at", so that eclipse won't automatically break in main() when it launches firefox for debugging.
...And 2 more matches

Storage access policy: Block cookies from trackers
we’ve added a preference that allows you to add custom domains to the tracking protection url classifier.
...if you are presented with a page that warns you "this may void your warranty!", click "i accept the risk!" search for the preference name "urlclassifier.trackingannotationtable.testentries".
... if the preference already exists, edit the preference value.
...And 2 more matches

HTML parser threading
references to dom nodes in tree ops are of type nsicontent** and are called content handles.
...the tree builder never dereferences a content handle.
...for any given content handle, the node creation tree op is always the first tree op in queue that uses that handle, so subsequent non-creation tree ops can safely dereference the handle to obtain a real node.
...And 2 more matches

Interfacing with the Add-on Repository
enabling the recommendation feature in current builds of firefox 4, the recommendation api doesn't work because the preference for the url to query to get recommended add-ons is not included by default; see bug 628785.
... to make the service work for the time being, you can use code like this when your extension starts up: var prefsservice = components.classes["@mozilla.org/preferences-service;1"] .getservice(components.interfaces.nsiprefservice); var prefbranch = prefsservice.getbranch("extensions."); var recurl = ""; try { recurl = prefbranch.getcharpref("getaddons.recommended.url"); } catch(e) { recurl = ""; } if (recurl == "") { prefbranch.setcharpref("getaddons.recommended.url", "https://services.addons.mozilla.org/%locale%/%app%/api/%api_version%/list/recommended/all/%max_results%/%os%/%version%?src=firefox"); prefsservice.savepreffile(null); } this fetches the value of the extensions.getaddons.recommended.url preference, and, if the preference doesn't...
... exist or has no value, sets the value of the preference to the correct one for the amo site.
...And 2 more matches

Promise
a reference to an existing promise may be received by different means, for example as the return value of a call into an asynchronous api.
... once you have a reference to a promise, you can call its then() method to execute an action when the value becomes available, or when an error occurs.
...you don't need to import the promise.jsm module to use a promise object to which you already have a reference.
...And 2 more matches

source-editor.jsm
constants preference name constants these constants define the names of preferences used by the source editor.
...that object may contain any combination of the following properties: constant type description contextmenu string | element a reference to the context menu to display when the user right-clicks in the editor.
...this value is overridden by the user preference named by sourceeditor.prefs.expand_tab.
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Localization content best practices
it's important to consider this when adding strings, and especially localization comments for strings that contain references, or obscure technical details.
...privacy-link = privacy terms file-wide comments should use the same format, they should be at the top of the file (after the license header) and just drop the (entity name/key) reference.
...the pair should be used to surround statements and references to user input.
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Localizing extension descriptions
the localization information provided by the em:localized property can be overriden using a set of localized preferences as detailed below.
... if there is more than one locale with the same number of matching parts, then use the most general one (e.g., en in preference to en-gb when searching for en-us).
... if a preference isn't set and there isn't a matching em:localized property for the current locale or en-us, then the properties specified directly on the install manifest are used as a last resort, as they were always used before gecko 1.9.
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Leak And Bloat Tests
results printed on tinderbox output, these consist of: mail rlk reference count leaks mail lk total bytes malloc'ed and not free'd mail mh maximum heap size mail a allocations - number of calls to malloc and friends.
...bloat testing are be stored in: http://mxr.mozilla.org/comm-central/source/mailnews/test/performance these files consist of: overlays (used to provide the hooks for the javascript): bloat/bloataddroverlay.xul bloat/bloatcomposeoverlay.xul bloat/bloatmainoverlay.xul javascript files (used to drive the tests): bloat/bloataddroverlay.js bloat/bloatcomposeoverlay.js bloat/bloatmainoverlay.js preference settings (used to provide a defined profile, see below): common/mailnewstestprefs.js python scripts (used to set up the profile and run the test): bloat/setupbloattest.py bloat/runtest.py common/setupcommonmailnews.py pre-defined profile initial setup: one pop3 account (mails tbd) one identity one smtp server defined (not used) future requirements/possibilities: one address book where...
... 08/04/2008: prefs.js created via tb with the above settings, the first section is for preferences included in tinderbox, the second section is ones which don't currently get set.
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NSS PKCS11 Functions
back to the nss reference main page.
...caller owns the reference if unsuccessful, null.
...this function will return a reference to a slot.
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sslintro.html
this page is part of the ssl reference that we are migrating into the format described in the mdn style guide.
... upgraded documentation may be found in the current nss reference overview of an ssl application chapter 1 overview of an ssl application ssl and related apis allow compliant applications to configure sockets for authenticated, tamper-proof, and encrypted communications.
...you should use only the ssl apis (and related certificate, key, and pkcs #11 apis) that are described in this document, the ssl reference.
...And 2 more matches

sslkey.html
this page is part of the ssl reference that we are migrating into the format described in the mdn style guide.
... upgraded documentation may be found in the current nss reference key functions chapter 6 key functions this chapter describes two functions used to manipulate private keys and key databases such as the key3.db database provided with communicator.
...when an application makes a copy of a particular certificate or key structure that already exists in memory, ssl makes a shallow copy--that is, it increments the reference count for that object rather than making a whole new copy.
...And 2 more matches

GC Rooting Guide
within spidermonkey, it is suggested that these are used in preference to the template class (gecko uses the template versions): template class typedef js::rooted<js::value> js::rootedvalue js::rooted<jsobject*> js::rootedobject js::rooted<jsstring*> js::rootedstring js::rooted<jsscript*> js::rootedscript js::rooted<jsid> js::rootedid for example, instead of this: jsobject* localobj...
...a js::handle<t> is a reference to a js::rooted<t>, and is created implicitly by referencing a js::rooted<t>: it is not valid to create a js::handle<t> manually (the whole point of a handle is that it only reference pointers that the gc knows about so it can update them when they move).
...thus, it makes more sense to only root the gc thing once and reuse it through an indirect reference.
...And 2 more matches

JSPRINCIPALS_HOLD
increment or decrement the reference count of a jsprincipals object.
...they are reference counted, not garbage collected.
...jsprincipals_hold(cx, principals) increments the reference count of principals by 1.
...And 2 more matches

JS_SetCallReturnValue2
causes a native to return a reference value (as allowed by ecma 262-3 §11.2.3).
... v jsval the id of the property of the reference value to be returned from the native.
... description calling js_setcallreturnvalue2 indicates to the runtime that the native will return a value of type reference.
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XPCOM changes in Gecko 2.0
documentation will be updated as time allows to remove references to interfaces being "frozen" or "unfrozen." component registration the way xpcom components are registered changed in gecko 2.
...references to nsigenericfactory.h should be replaced with mozilla/moduleutils.h.
... the os and abi chrome registration directives to achieve the same effect: binary-component components/windows/mycomponent.dll abi=winnt_x86-msvc binary-component components/mac/mycomponent.dylib abi=darwin_x86-gcc3 binary-component components/mac/mycomponent64.dylib abi=darwin_x86_64-gcc3 binary-component components/linux/mycomponent.so abi=linux_x86-gcc3 this also means that platform-specific preferences are no longer possible.
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operator+=
« xpcom api reference summary this operator+= is a shortcut for the append family of functions.
... return values this operator returns a reference back to the object being modified to allow operator chaining.
... return values this operator returns a reference back to the object being modified to allow operator chaining.
...And 2 more matches

operator=
« xpcom api reference summary this operator is a shortcut for the inherited nsacstring::assign family of functions.
... return values this operator returns a reference back to the object being modified to allow operator chaining.
... return values this operator returns a reference back to the object being modified to allow operator chaining.
...And 2 more matches

operator=
« xpcom api reference summary this operator is a shortcut for the inherited nsastring::assign family of functions.
... return values this operator returns a reference back to the object being modified to allow operator chaining.
... return values this operator returns a reference back to the object being modified to allow operator chaining.
...And 2 more matches

IAccessibleHyperlink
the anchors would all reference the image object.
... the anchortargets would reference the second level accessible hyperlink objects.
...their anchors would also reference the image object and their anchortargets would reference urls or the objects that would be activated.
...And 2 more matches

nsIAccessibleRetrieval
inherits from: nsisupports last changed in gecko 2.0 (firefox 4 / thunderbird 3.3 / seamonkey 2.1) method overview nsiaccessible getaccessiblefor(in nsidomnode anode); nsiaccessible getaccessibleinshell(in nsidomnode anode, in nsipresshell apresshell); nsiaccessible getaccessibleinweakshell(in nsidomnode anode, in nsiweakreference apresshell); obsolete since gecko 2.0 nsiaccessible getaccessibleinwindow(in nsidomnode anode, in nsidomwindow adomwin); obsolete since gecko 2.0 nsiaccessible getapplicationaccessible(); nsiaccessible getattachedaccessiblefor(in nsidomnode anode); nsiaccessible getcachedaccessible(in nsidomnode anode, in nsiweakreference ashell); obsolete since gecko 2.0 ...
... nsiaccessnode getcachedaccessnode(in nsidomnode anode, in nsiweakreference ashell); obsolete since gecko 2.0 nsidomnode getrelevantcontentnodefor(in nsidomnode anode); astring getstringeventtype(in unsigned long aeventtype); astring getstringrelationtype(in unsigned long arelationtype); astring getstringrole(in unsigned long arole); nsidomdomstringlist getstringstates(in unsigned long astates, in unsigned long aextrastates); methods getaccessiblefor() return an nsiaccessible for a dom node in pres shell 0.
...nsiaccessible getaccessibleinweakshell( in nsidomnode anode, in nsiweakreference apresshell ); parameters anode the dom node to get an accessible for.
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nsILocaleService
silocale getapplicationlocale(); astring getlocalecomponentforuseragent(); nsilocale getlocalefromacceptlanguage(in string acceptlanguage); nsilocale getsystemlocale(); nsilocale newlocale(in astring alocale); nsilocale newlocaleobject(in nsilocaledefinition localedefinition); obsolete since gecko 1.9 methods getapplicationlocale() gets the user preference for locale from the operating system.
...getlocalecomponentforuseragent() gets the user preference for locale from the operating system.
...getlocalefromacceptlanguage() gets the most preferred locale from a list of locale preferences.
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nsINavBookmarksService
if ownsweak is false, the bookmark service will keep an owning reference to the observer.
... if ownsweak is true, then aobserver must implement nsisupportsweakreference, and the bookmark service will keep a weak reference to the observer.
... ownsweak the owning reference state (boolean).
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nsIPrincipal
void getpreferences(out string prefbranch, out string id, out string subjectname, out string grantedlist, out string deniedlist, out boolean istrusted); boolean iscapabilityenabled(in string capability, in voidptr annotation); native code only!
...jsprincipals getjsprincipals( in jscontext cx ); parameters cx missing description return value missing description getpreferences() returns the security preferences associated with this principal.
... void getpreferences( out string prefbranch, out string id, out string subjectname, out string grantedlist, out string deniedlist, out boolean istrusted ); parameters prefbranch on return, contains the preference branch to which the preferences pertain.
...And 2 more matches

Frequently Asked Questions
this section will help you if you're fixing a broken build, or have what you think is a quick obvious question, and you don't have time to read the reference manual.
...in most cases, the answer will just refer back into the reference manual, above.
... ns_precondition "you can't dereference a null nscomptr with operator->()" ns_precondition "you can't dereference a null nscomptr with operator*()" other issues printf("%x\n", mynscomptr); can cause the program to crash on sigill (illegal instruction), and not on the line with the printf, which can make it tricky to figure out.
...And 2 more matches

Mozilla
these articles provide important guides and references to ensuring the code you write is secure, including both design recommendations and testing guidelines.
... cookies preferences in mozilla these preferences apply to most mozilla products (including firefox and seamonkey), however they are application-specific, so not all of them may apply to you.
... preferences the preference system makes it possible to store data for mozilla applications using a key/value pairing system.
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Plug-in Basics - Plugins
the enabledplugin property is a reference to a plugin object that represents the plug-in that is configured for the specified mime type.
...where this varies, the reference entry for the function in the reference section describes the difference.
... see the mozilla activex project page in the plug-in references section below for more information about embedding activex controls in plug-ins or embedding plug-ins in activex applications.
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Dominators - Firefox Developer Tools
these concepts matter in memory analysis, because often an object may itself be small, but may hold references to other much larger objects, and by doing this will prevent the garbage collector from freeing that extra memory.
...each node in the graph represents an object, and each connection between nodes (edge) represents a reference from one object to another.
... so when an object becomes unreachable (for example, because it is only referenced by a single local variable which goes out of scope) then any objects it references also become unreachable, as long as no other objects reference them: conversely, this means that objects are kept alive as long as some other reachable object is holding a reference to them.
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CSS Typed Object Model API - Web APIs
cssunparsedvalue the cssunparsedvalue interface of the css typed object model api represents property values that reference custom properties.
... it consists of a list of string fragments and variable references.
... cssunparsedvalue.cssunparsedvalue() constructor creates a new cssunparsedvalue object which represents property values that reference custom properties.
...And 2 more matches

How whitespace is handled by HTML, CSS, and in the DOM - Web APIs
for example, if you have a reference to a parent node and want to affect its first element child using node.firstchild, if there is a rogue whitespace node just after the opening parent tag you will not get the result you are expecting.
... (normally |previoussibling| is a property * of all dom nodes that gives the sibling node, the node that is * a child of the same parent, that occurs immediately before the * reference node.) * * @param sib the reference node.
... * * @param sib the reference node.
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IDBIndexSync - Web APIs
storename readonly domstring this index's referenced object store.
... constraint_err if a record exists in this index with a key corresponding to the key parameter or the index is auto-populated, or if no record exists with a key corresponding to the value parameter in the index's referenced object store.
... getobject() retrieves and returns the value from this index's referenced object store that corresponds to the given key.
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Using IndexedDB - Web APIs
for the reference documentation on the indexeddb api, see the indexeddb article and its subpages.
...// moreover, you may need references to some window.idb* objects: window.idbtransaction = window.idbtransaction || window.webkitidbtransaction || window.msidbtransaction || {read_write: "readwrite"}; // this line should only be needed if it is needed to support the object's constants for older browsers window.idbkeyrange = window.idbkeyrange || window.webkitidbkeyrange || window.msidbkeyrange; // (mozilla has never prefixed these o...
...more on this later in updating the version of the database below, and the idbfactory.open reference page.
...And 2 more matches

Capabilities, constraints, and settings - Web APIs
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 use for any of the constrainable properties about which it has a preference.
... you can also change the constraints of an existing mediastreamtrack on the fly, by calling the track's applyconstraints() method, passing into it an object representing the constraints you wish to apply to the track: videotrack.applyconstraints({ width: 1920, height: 1080 }); in this snippet, the video track referenced by videotrack is updated so that its resolution as closely as possible matches 1920x1080 pixels (1080p high definition).
... then we initialize the variables which will hold the mediatrackconstraints objects for the video and audio tracks, as well as the variables which will hold references to the video and audio tracks themselves, to null.
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Node - Web APIs
these include attr, characterdata (which text, comment, and cdatasection are all based on), processinginstruction, documenttype, notation, entity, and entityreference.
...possible values are: name value element_node 1 attribute_node 2 text_node 3 cdata_section_node 4 entity_reference_node 5 entity_node 6 processing_instruction_node 7 comment_node 8 document_node 9 document_type_node 10 document_fragment_node 11 notation_node 12 node.nodevalue returns / sets the value of the current node.
... if the argument referenced an existing node on the dom tree, the node will be detached from its current position and attached at the new position.
...And 2 more matches

Range.comparePoint() - Web APIs
the range.comparepoint() method returns -1, 0, or 1 depending on whether the referencenode is before, the same as, or after the range.
... if the reference node is a node of type text, comment, or cdatasection, then offset is the number of characters from the start of reference node.
... for other node types, offset is the number of child nodes between the start of the reference node.
...And 2 more matches

Using Web Workers - Web APIs
note: see the web workers api landing page for reference documentation on workers and additional guides.
...worker('my_task.js'); myworker.onmessage = function(oevent) { console.log('worker said : ' + oevent.data); }; myworker.postmessage('ali'); my_task.js (the worker): postmessage("i\'m working before postmessage(\'ali\')."); onmessage = function(oevent) { postmessage('hi ' + oevent.data); }; the structured cloning algorithm can accept json and a few things that json can't — like circular references.
...think of it as pass-by-reference if you're from the c/c++ world.
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window.dump() - Web APIs
however, this use of dump is not affected by the preference mentioned below -- it will always be shown.
... it is therefore advisable to either check this preference yourself or use a debugging preference of your own to make sure you don't send lots of debugging content to a user's console when they might not be interested in it at all.
...to see the dump output you have to enable it by setting the preference browser.dom.window.dump.enabled to true.
...And 2 more matches

window.postMessage() - Web APIs
broadly, one window may obtain a reference to another (e.g., via targetwindow = window.opener), and then dispatch a messageevent on it with targetwindow.postmessage().
... syntax targetwindow.postmessage(message, targetorigin, [transfer]); targetwindow a reference to the window that will receive the message.
... methods for obtaining such a reference include: window.open (to spawn a new window and then reference it), window.opener (to reference the window that spawned this one), htmliframeelement.contentwindow (to reference an embedded <iframe> from its parent window), window.parent (to reference the parent window from within an embedded <iframe>), or window.frames + an index value (named or numeric).
...And 2 more matches

XRSpace - Web APIs
at this time, those are xrreferencespace and xrboundedreferencespace.
... xrboundedreferencespace represents a reference space which may move within a region of space whose borders are defined by an array of points laid out in clockwise order along the floor to define the passable region of the space.
... the origin of an xrboundedreferencespace is always at floor level, with its x and z coordinates typically defaulting to a location near the room's center.
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Web Accessibility: Understanding Colors and Luminance - Accessibility
newer technologies, such as opengl and direct3d incorporate support for the srgb gamma curve, although some articles for opengl reference use of rgba rather than srgb.
... here is the definition of relative luminance as defined by the w3c: "the relative brightness of any point in a colorspace, normalized to 0 for darkest black and 1 for lightest white" this statement is of course accurate, but may be confusing when used in reference to the rgb color space, which is an integer between 0 and 255.
...there are also different ways to refrence rgb: rgb decimal reference: 153, 0, 0 and an rgb percent reference: 60, 0, 0.
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:scope - CSS: Cascading Style Sheets
the :scope css pseudo-class represents elements that are a reference point for selectors to match against.
... 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).
... to change preferences in firefox, visit about:config.ie no support noopera full support 15safari full support 7webview android full support ≤37chrome android full support 27firefox android 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.
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@supports - CSS: Cascading Style Sheets
rt 28edge full support 12firefox full support 22 full support 22 no support 17 — 22disabled disabled from version 17 until version 22 (exclusive): this feature is behind the layout.css.supports-rule.enabled preference (needs to be set to true).
... to change preferences in firefox, visit about:config.ie no support noopera full support 12.1safari full support 9webview android full support ≤37chrome android full support 28firefox android full support 22 full support 22 no support 17 — 22disabled disabled from version 17 until version 22 (exclusive): this feature is behind the layout.css.supports-rule.enabled preference (needs to be set to true).
... to change preferences in firefox, visit about:config.opera android full support 12.1safari ios full support 9samsung internet android full support 1.5selector()chrome full support 83edge full support 83firefox full support 69 full support 69 full support 64disabled disabled from version 64: this feature is behind the layout.css.supports-selector.enabled preference (needs to be set to true).
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<color> - CSS: Cascading Style Sheets
mozilla color preference extensions -moz-activehyperlinktext user's preference for text color of active links.
... -moz-default-background-color user's preference for the document background color.
... -moz-default-color user's preference for the text color.
...And 2 more matches

Setting up adaptive streaming media sources - Developer guides
tation id="4" bandwidth="250000" width="480" height="360"> <baseurl>elephantsdream_h264bpl30_0250.264.dash</baseurl> </representation> <representation id="5" bandwidth="500000" width="480" height="360"> <baseurl>elephantsdream_h264bpl30_0500.264.dash</baseurl> </representation> </adaptationset> </period> </mpd> once you have generated your mpd file you can reference it from within the video tag.
... once you have generated your mpd file you can reference as expected it from within the <video> element: <video src="my.mpd" type="application/dash+xml"></video> it might be wise to provide a fallback: <video> <source src="my.mpd" type="application/dash+xml"> <!-- fallback --> <source src="my.mp4" type="video/mp4"> <source src="my.webm" type="video/webm"> </video> note: mpeg-dash playback relies on dash.js and browser support for media sou...
...rce extensions, see the latest dash.js reference player.
...And 2 more matches

<img>: The Image Embed element - HTML: Hypertext Markup Language
auto default: no preference for the decoding mode.
...priority hints allow the values: auto: no preference.
...this provides them with significant leeway to tailor their selection based on things like user preferences or bandwidth conditions.
...And 2 more matches

X-DNS-Prefetch-Control - HTTP
the x-dns-prefetch-control http response header controls dns prefetching, a feature by which browsers proactively perform domain name resolution on both links that the user may choose to follow as well as urls for items referenced by the document, including images, css, javascript, and so forth.
... this prefetching is performed in the background, so that the dns is likely to have been resolved by the time the referenced items are needed.
...on firefox, this can be done by setting the network.dns.disableprefetch preference to true.
...And 2 more matches

HTTP headers - HTTP
save-data a boolean that indicates the user agent's preference for reduced data usage.
... do not track dnt expresses the user's tracking preference.
...see also the firefox user agent string reference.
...And 2 more matches

Functions - JavaScript
see also the exhaustive reference chapter about javascript functions to get to know the details.
...a closure must preserve the arguments and variables in all scopes it references.
... this is not different from storing references in other objects, but is often less obvious because one does not set the references directly and cannot inspect them.
...And 2 more matches

Working with objects - JavaScript
car.prototype.color = null; car1.color = 'black'; see the prototype property of the function object in the javascript reference for more information.
...so, the full definition of car would now look like function car(make, model, year, owner) { this.make = make; this.model = model; this.year = year; this.owner = owner; this.displaycar = displaycar; } then you can call the displaycar method for each of the objects as follows: car1.displaycar(); car2.displaycar(); using this for object references javascript has a special keyword, this, that you can use within a method to refer to the current object.
...delete myobj.a; console.log ('a' in myobj); // output: "false" you can also use delete to delete a global variable if the var keyword was not used to declare the variable: g = 17; delete g; comparing objects in javascript, objects are a reference type.
...And 2 more matches

Array.prototype.slice() - JavaScript
elements of the original array are copied into the returned array as follows: for object references (and not the actual object), slice copies object references into the new array.
...if a referenced object changes, the changes are visible to both the new and original arrays.
...both include a reference to the object myhonda.
...And 2 more matches

String.prototype.localeCompare() - JavaScript
the localecompare() method returns a number indicating whether a reference string comes before, or after, or is the same as the given string in sort order.
... syntax referencestr.localecompare(comparestring[, locales[, options]]) parameters comparestring the string against which the referencestr is compared.
... return value a negative number if referencestr occurs before comparestring; positive if the referencestr occurs after comparestring; 0 if they are equivalent.
...And 2 more matches

WeakMap - JavaScript
the weakmap object is a collection of key/value pairs in which the keys are weakly referenced.
... the second inconvenience is a memory leak because the arrays ensure that references to each key and each value are maintained indefinitely.
... these references prevent the keys from being garbage collected, even if there are no other references to the object.
...And 2 more matches

WeakSet - JavaScript
the weakset is weak, meaning references to objects in a weakset are held weakly.
... if no other references to an object stored in the weakset exist, those objects can be garbage collected.
... use case: detecting circular references functions that call themselves recursively need a way of guarding against circular data structures by tracking which objects have already been processed.
...And 2 more matches

WebAssembly.Table.prototype.get() - JavaScript
the get() prototype method of the webassembly.table() object retrieves a function reference stored at a given index.
... syntax table.get(index); parameters index the index of the function reference you want to retrieve.
... return value a function reference — this is an exported webassembly function, a javascript wrapper for an underlying wasm function.
...And 2 more matches

Optional chaining (?.) - JavaScript
the optional chaining operator (?.) permits reading the value of a property located deep within a chain of connected objects without having to expressly validate that each reference in the chain is valid.
...chaining operator, except that instead of causing an error if a reference is nullish (null or undefined), the expression short-circuits with a return value of undefined.
... this results in shorter and simpler expressions when accessing chained properties when the possibility exists that a reference may be missing.
...And 2 more matches

<use> - SVG: Scalable Vector Graphics
most attributes on use do not override those already on the element referenced by use.
...only the attributes x, y, width, height and href on the use element will override those set on the referenced element.
... however, any other attributes not set on the referenced element will be applied to the use element.
...And 2 more matches

SVG and CSS - SVG: Scalable Vector Graphics
note: elements referenced by <use> elements inherit the styles from that element.
... */ #outer-petals { opacity: .75; --segment-fill-fill: azure; --segment-fill-stroke: lightsteelblue; --segment-fill-stroke-width: 1; --segment-edge-fill: none; --segment-edge-stroke: deepskyblue; --segment-edge-stroke-width: 3; --segment-fill-fill-hover: plum; --segment-fill-stroke-hover: none; --segment-edge-stroke-hover: slateblue; } /* non-standard way of styling elements referenced via <use> elements, supported by some older browsers */ #outer-petals .segment-fill { fill: azure; stroke: lightsteelblue; stroke-width: 1; } #outer-petals .segment-edge { fill: none; stroke: deepskyblue; stroke-width: 3; } #outer-petals .segment:hover > .segment-fill { fill: plum; stroke: none; } #outer-petals .segment:hover > .segment-edge { stroke: slateblue; } /* inner...
... petals */ #inner-petals { --segment-fill-fill: yellow; --segment-fill-stroke: yellow; --segment-fill-stroke-width: 1; --segment-edge-fill: none; --segment-edge-stroke: yellowgreen; --segment-edge-stroke-width: 9; --segment-fill-fill-hover: darkseagreen; --segment-fill-stroke-hover: none; --segment-edge-stroke-hover: green; } /* non-standard way of styling elements referenced via <use> elements, supported by some older browsers */ #inner-petals .segment-fill { fill: yellow; stroke: yellow; stroke-width: 1; } #inner-petals .segment-edge { fill: none; stroke: yellowgreen; stroke-width: 9; } #inner-petals .segment:hover > .segment-fill { fill: darkseagreen; stroke: none; } #inner-petals .segment:hover > .segment-edge { stroke: green; } open the document in y...
...And 2 more matches

Private Properties - Archive of obsolete content
the second problem is more severe: the thumbnail cache maintains a strong reference to each thumbnail object, so they will never be freed, even when their corresponding image has gone out of scope.
...a weakmap is very similar to an ordinary hash map, but differs from it in two crucial ways: it can use ordinary objects as keys it does not maintain a strong reference to its values to understand how weakmaps are used in practice, the following rewrites the thumbnail cache using a weakmap: let thumbnails = new weakmap(); function getthumbnail(image) { let thumbnail = thumbnails.get(image); if (!thumbnail) { thumbnail = createthumbnail(image); thumbnails.set(image, thumbnail); } return thumbnail; } this version suffers from none of the problems we mentioned earlier.
...nal(this).x = x; internal(this).y = y; } point.prototype.getx = function () { return internal(this).x; }; point.prototype.setx = function (x) { internal(this).x = x; }; point.prototype.gety = function () { return internal(this).y; }; point.prototype.sety = function (y) { internal(this).y = y; }; the only way for a function to access the properties x and y, is if it has a reference to an instance of point and its internal namespace.
...moreover, because members of point have a reference to the internal namespace, they can access private properties on other instances of point.

system/events - Archive of obsolete content
this object has three attributes: type: the event type name subject: the event subject object data: the event data string strong : boolean default is false, a weak reference, which means it can be garbage collected at any time if there are no other references to it.
... determines if we should keep a strong or weak reference to the listener method.
... strong : boolean default is false, a weak reference, which means it can be garbage collected at any time if there are no other references to it.
... determines if we should keep a strong or weak reference to the listener method.

Bootstrapped extensions - Archive of obsolete content
similarly, when its shutdown() function is called, it must remove anything that it has added to the application, as well as all references to any of its objects.
...you can test different locale by going to about:config and changing preference of general.useragent.locale to en-us and then to en-gb and disabling then re-enabling the add-on.
...you can go to about:config and change the value of the preference general.useragent.locale to en-us and then to en-gb and then reload the open pages to see the localization change.
... mark finkle provides some simple example code for restartless add-ons in mobile firefox, adding resources (like the options window) to bootstrapped extensions and using default preferences without a default/preferences/prefs.js file.

Progress Listeners - Archive of obsolete content
example create an object which implements nsiwebprogresslistener: const state_start = ci.nsiwebprogresslistener.state_start; const state_stop = ci.nsiwebprogresslistener.state_stop; var mylistener = { queryinterface: xpcomutils.generateqi(["nsiwebprogresslistener", "nsisupportsweakreference"]), onstatechange: function(awebprogress, arequest, aflag, astatus) { // if you use mylistener for more than one tab/window, use // awebprogress.domwindow to obtain the tab/window which triggers the state change if (aflag & state_start) { // this fires when the load event is initiated } if (aflag & state_stop) { // this fires wh...
...note that the browser uses a weak reference to your listener object, so make sure to keep an external reference to your object to ensure that it stays in memory.
...the tabbrowser uses a strong reference to your listener object.
... alert(auri.spec); this.oldurl = auri.spec; }, // nsiwebprogresslistener queryinterface: xpcomutils.generateqi(["nsiwebprogresslistener", "nsisupportsweakreference"]), onlocationchange: function(aprogress, arequest, auri) { this.processnewurl(auri); }, onstatechange: function() {}, onprogresschange: function() {}, onstatuschange: function() {}, onsecuritychange: function() {} }; window.addeventlistener("load", function() { myextension.init() }, false); window.addeventlistener("unload", function() { myextension.uninit() }, ...

Delayed Execution - Archive of obsolete content
a reference to the timer objects must be explicitly kept alive until that point.
... some example usages include: const timer = components.constructor("@mozilla.org/timer;1", "nsitimer", "initwithcallback"); function delay(timeout, func) { let timer = new timer(function () { // remove the reference so that it can be reaped.
... delete delay.timers[idx]; func(); }, timeout, ci.nsitimer.type_one_shot); // store a reference to the timer so that it's not reaped before it fires.
... let idx = delay.timers.push(timer) - 1; return idx; } delay.timers = []; function repeat(timeout, func) { let timer = new timer(function () { func(); }, timeout, ci.nsitimer.type_repeating_slack); // store a reference to the timer so that it's not reaped before it fires.

Enhanced Extension Installation - Archive of obsolete content
<location>/extensions.ini - an ini manifest listing the directories for all the extensions and themes at the location (used by the component manager, preferences system, chrome registry etc to locate files during the startup process).
... 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.
...at this time a new extensions.ini file is written locating the extension so that the component manager, preferences system and chrome registry can locate additional files on the next start.
...directories to extensions that are enabled only), to be used by the xredirprovider during startup to locate components, preferences and chrome manifests.

Extension Etiquette - Archive of obsolete content
sub-menus should be used for single extensions needing multiple menu items, and a tools menu item should not be created for options and preferences (for options and preferences, see the add-on manager).
...don't hesitate to give long descriptions for each preference, as long as they are easy to understand, even for non-computer-savvy users.
... however, please make sure the default set of preferences is adequate — don't require people to tweak options in order to get your extension's core functionality.
... preferences' internal names internal firefox preference names for extensions or to be clear, the name of the preference as it appears in the about:config, should start with "extensions.," then the name of the extension, with a dot, then the name of the preference.

JavaScript Object Management - Archive of obsolete content
notice the way we send callback functions as parameters, and the use of an alternate reference for this which we always name that.
...the consequence of doing this wrong is to have a this reference that doesn't do what you expected it to do.
...if you have to use a reference to this inside the function, declare a variable called that that equals this, and use that in the anonymous function.
...preferences is one of them, and they are covered in another section of this tutorial.

Add-ons - Archive of obsolete content
so there may be still some reference to the xuldev website (we want to host source code on mdc, not on xuldev), and to japanese things (like some specific locales, which have been translated to french since non-latin characters are not well supported).
...well, xul overlays and windows, jsm files, chrome & resource mappings with localization, default preferences, but no xpcom components of your own.
... inline options firefox 7 supports a new syntax for defining extensions' preferences for both bootstrapped and traditional extensions.
... the user interface for the preferences defined with this new syntax appears in the extension's detail view in the add-on manager.

Source code directories overview - Archive of obsolete content
this code originated as the reference implementation for the jpeg specification from the independent jpeg group.
...this code is also known by the names, "nglayout" and "gecko." lib contains c code used for reference by developers in programming the mac.
...leaky can help detect memory leaks and xpcom reference counting problems.
... components contains firefox specific components like history, bookmarks, preferences, migration, sidebar..

Structure of an installable bundle - Archive of obsolete content
(>=2.0) /chrome.manifest chrome registration manifest (>=1.8) /components/* xpcom components (*.js, *.dll), and interface files from *.xpt (>=1.7) /defaults/preferences/*.js default preferences (>=1.7) /plugins/* npapi plugins (>=1.8) /chrome/icons/default/* window icons (>=1.8) /icon.png extension icon, for display in the add-ons manager, 32px × 32px (>=1.9.2) /icon64.png extension icon, for display in the add-ons manager, 64px × 64px (>=2.0) /options.xul extension options, for dis...
... for example: binary-component components/windows/mycomponent.dll abi=winnt_x86-msvc binary-component components/mac/mycomponent.dylib abi=darwin_x86-gcc3 binary-component components/mac/mycomponent64.dylib abi=darwin_x86_64-gcc3 binary-component components/linux/mycomponent.so abi=linux_x86-gcc3 this also means you can no longer have platform-specific preference files in your bundle.
...when default preferences are defined in several directories, the ones loaded later overwrite the earlier ones.
... official references for toolkit api structure of an installable bundle: describes the common structure of installable bundles, including extensions, themes, and xulrunner applications extension packaging: specific information about how to package extensions theme packaging: specific information about how to package themes multiple-item extension packaging: specific information about multiple-item extension xpis xul application packaging: specific information about how to package xulrunner applications chrome registration printing in xul apps ...

Layout System Overview - Archive of obsolete content
the style context is associated with the frame via a reference because it is needed for many other computations during the formatting of the frames.
...the presentation shell currently owns a controlling reference to the presentation context.
... further references to the presentation shell and presentation context will be made by using the term presentation shell.
...the frame is able to provide a reference to its parent and to its children upon request.

Dynamically modifying XUL-based user interface - Archive of obsolete content
you may also want to read some introductory documents about dom, like the about the document object model article or the introduction page of the gecko dom reference.
...(read more about this in working with windows in chrome code.) when your script is included using a <script> tag, the document property references the dom document that includes the script.
... appendchild() appends the node after all other nodes, while insertbefore() inserts the node before the node referenced by its second parameter.
...for example: // gets the first anonymous child of the given node document.getanonymousnodes(node)[0]; // returns a nodelist of anonymous elements with anonid attribute equals el1 document.getanonymouselementbyattribute(node, "anonid", "el1"); see getanonymousnodes and getanonymouselementbyattribute in the xbl reference for more information.

Special per-platform menu considerations - Archive of obsolete content
for instance, this is the proper place to put the menu items which open the application preferences and which quit the application.
... menu_prefsseparator the separator just before the preferences/options item.
... menu_preferences the item which opens the application preferences.
... here is an example: <menubar> <menu label="tools"> <menupopup> <menuitem label="spell check"/> <menuitem id="menu_preferences" label="preferences" oncommand="window.opendialog('options.xul', '_new', 'chrome');"/> </menupopup> </menu> </menubar> this menu item will be placed on the application menu on the macintosh but left in the tools menu on other platforms.

Using Recursive Templates - Archive of obsolete content
after the data is generated, each result is used as the new reference point for a nested iteration of the template.
...<groupbox type="menu" datasources="people.xml" ref="*" querytype="xml"> <template> <query expr="*"/> <action> <vbox uri="?" class="indent"> <label value="?name"/> </vbox> </action> </template> </groupbox> in this simplified example, the xpath expression just gets the list of child elements of the reference node.
...since the initial reference node is the root of the xml source document, the results are two elements, one for each group element.
...as each group has children itself, each result (in this case, each group) becomes the reference point for a futher iteration.

Complete - Archive of obsolete content
install.js installation script for seamonkey chrome directory containing the extension code chrome/allcustom.jar the extension jar defaults/preferences directory containing a preferences file inside the jar there are three directories: content xul, javascript and other content that does not depend on the locale or theme locale files for each locale skin files for each theme version checks firefox etc.
...languages extensions can be installed by users who have different language and regional preferences.
... a combination of language and regional preferences is known as a locale.
...a preference setting in defaults/preferences/allcustom.js makes the connection between the description and the properties file, specifying the url: chrome://allcustom/locale/install.properties again, the application's chrome registry converts this url to the correct file for the locale you are using.

Manifest Files - Archive of obsolete content
packages may be installed into mozilla and referenced with chrome urls.
...note that the reference should always be a directory, not a file.
...you should find references to your application id in there.
... the error message "xml parsing error: undefined entity" in your xul file can be caused by an error in the manifest or in the jar file referenced by the manifest.

XPCOM Interfaces - Archive of obsolete content
after learning this section, you can search suitable interfaces using xulplanet xpcom reference about xpcom mozilla is constructed from a collection of components, each of which performs a certain task.
... however, at this point, we only have a reference to the file component itself.
...the result is that afile will be a reference to the part of the component that implements the nsilocalfile interface.
...instead of calling createinstance(), you call getservice() to get a reference to the service component.

binding - Archive of obsolete content
« xul reference home [ examples | attributes | properties | methods | related ] should be contained within a bindings element.
...) attributes inherited from xul element align, allowevents, allownegativeassertions, class, coalesceduplicatearcs, collapsed, container, containment, context, contextmenu, datasources, dir, empty, equalsize, flags, flex, height, hidden, id, insertafter, insertbefore, left, maxheight, maxwidth, menu, minheight, minwidth, mousethrough, observes, ordinal, orient, pack, persist, popup, position, preference-editable, querytype, ref, removeelement, sortdirection, sortresource, sortresource2, statustext, style, template, tooltip, tooltiptext, top, uri, wait-cursor, width properties object type: string the object of the element.
... it can be a variable reference, an rdf resource uri, or an rdf literal value.
...it can be a variable reference or an rdf resource uri.

bindings - Archive of obsolete content
« xul reference home [ examples | attributes | properties | methods | related ] used to specify a set of variable bindings for a rule.
... attributes inherited from xul element align, allowevents, allownegativeassertions, class, coalesceduplicatearcs, collapsed, container, containment, context, contextmenu, datasources, dir, empty, equalsize, flags, flex, height, hidden, id, insertafter, insertbefore, left, maxheight, maxwidth, menu, minheight, minwidth, mousethrough, observes, ordinal, orient, pack, persist, popup, position, preference-editable, querytype, ref, removeelement, sortdirection, sortresource, sortresource2, statustext, style, template, tooltip, tooltiptext, top, uri, wait-cursor, width object type: string the object of the element.
... it can be a variable reference, an rdf resource uri, or an rdf literal value.
...it can be a variable reference or an rdf resource uri.

checkbox - Archive of obsolete content
« xul reference home [ examples | attributes | properties | methods | related ] an element that can be turned on and off.
... attributes accesskey, checked, command, crop, disabled, src, label, preference, tabindex properties accesskey, accessibletype, checked, command, crop, disabled, src, label, tabindex examples <checkbox label="enable javascript" checked="true"/> <checkbox label="enable java" checked="false"/> attributes accesskey type: character this should be set to a character that is used as a shortcut key.
... preference type: id connects the element to a corresponding preference.
...more information is available in the preferences system article.

colorpicker - Archive of obsolete content
« xul reference home [ examples | attributes | properties | methods | related ] a palette of colors from which a user may select by clicking on one of the grid cells.
... attributes disabled, color, onchange, preference, tabindex, type properties accessibletype, color, disabled, open, tabindex, value examples <colorpicker/> attributes disabled type: boolean indicates whether the element is disabled or not.
... id="findfile-window" title="find files" orient="horizontal" xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"> <script type="text/javascript"> function myfunction(e){ /* do something cool here or just say the below */ alert(e.target.nodename); } </script> <textbox id="find-text" onchange="return myfunction(event);"/> </window> preference type: id connects the element to a corresponding preference.
...more information is available in the preferences system article.

dialog - Archive of obsolete content
« xul reference home [ examples | attributes | properties | methods | related ] this element should be used in place of the window element for dialog boxes.
...screen, getbutton, movetoalertposition examples <?xml version="1.0"?> <?xml-stylesheet href="chrome://global/skin/global.css" type="text/css"?> <dialog id="donothing" title="dialog example" xmlns="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul" buttons="accept,cancel" buttonlabelcancel="cancel" buttonlabelaccept="save"> <dialogheader title="options" description="my preferences"/> <groupbox> <caption label="colour"/> <radiogroup> <radio label="red"/> <radio label="green" selected="true"/> <radio label="blue"/> </radiogroup> <label value="nickname"/> <textbox/> </groupbox> </dialog> attributes activetitlebarcolor type: color string specify background color of the window's titlebar when it is active (foreground).
... warning: if the accept and cancel buttons are actually shown is system dependent and is mainly controlled by the value of the boolean preference browser.preferences.instantapply.
...the default setting of browser.preferences.instantapply currently is true on linux and mac os and false on windows (which however might or might not change soon, see bug 738797 and bug 1037225).

listbox - Archive of obsolete content
« xul reference home [ examples | attributes | properties | methods | related ] this element is used to create a list of items where one or more of the items may be selected.
... attributes disabled, disablekeynavigation, preference, rows, seltype, suppressonselect, tabindex, value properties accessibletype, currentindex, currentitem, disabled, disablekeynavigation, itemcount, listboxobject, selectedcount, selectedindex, selecteditem, selecteditems, seltype, suppressonselect, tabindex, value methods additemtoselection, appenditem, clearselection, ensureelementisvisible, ensureindexisvisible, getindexoffirstvisibler...
... preference type: id connects the element to a corresponding preference.
...more information is available in the preferences system article.

listitem - Archive of obsolete content
« xul reference home [ examples | attributes | properties | methods | related ] a single row in a listbox.
... attributes accesskey, checked, command, crop, current, disabled, image, label, preference, selected, tabindex, type, value properties accesskey, accessible, checked, control, crop, current, disabled, image, label, selected, tabindex, value style classes listitem-iconic examples <listbox id="thelist"> <listitem label="ruby"/> <listitem label="emerald"/> <listitem label="sapphire" selected="true"/> <listitem label="diamond"/> </listbox> attributes accesskey type: character t...
... preference type: id connects the element to a corresponding preference.
...more information is available in the preferences system article.

member - Archive of obsolete content
« xul reference home [ examples | attributes | properties | methods | related ] used within a rule's conditions element to match elements that are containers or are contained within another element.
... attributes inherited from xul element align, allowevents, allownegativeassertions, class, coalesceduplicatearcs, collapsed, container, containment, context, contextmenu, datasources, dir, empty, equalsize, flags, flex, height, hidden, id, insertafter, insertbefore, left, maxheight, maxwidth, menu, minheight, minwidth, mousethrough, observes, ordinal, orient, pack, persist, popup, position, preference-editable, querytype, ref, removeelement, sortdirection, sortresource, sortresource2, statustext, style, template, tooltip, tooltiptext, top, uri, wait-cursor, width properties child type: ?
... a variable reference to a node that is expected to be a child of the element that is referred to by the container element.
... a variable reference to a node that is expected to be a container.

radiogroup - Archive of obsolete content
« xul reference home [ examples | attributes | properties | methods | related ] a group of radio buttons.
... attributes disabled, focused, preference, tabindex, value properties accessibletype, disabled, focuseditem, itemcount, selectedindex, selecteditem, tabindex, value methods appenditem, checkadjacentelement, getindexofitem, getitematindex, insertitemat, removeitemat examples <radiogroup> <radio id="orange" label="red"/> <radio id="violet" label="green" selected="true"/> <radio id="yellow" label="blue"/> </radiogroup> attributes disabl...
... preference type: id connects the element to a corresponding preference.
...more information is available in the preferences system article.

richlistbox - Archive of obsolete content
« xul reference home [ examples | attributes | properties | methods | related ] this element is used to create a list of listitems (richlistitems), similar to a listbox, but is designed to be used when the items do not contain simple text content.
... attributes disabled, disablekeynavigation, preference, seltype, suppressonselect, tabindex, value properties accessibletype, currentindex, currentitem, disabled, disablekeynavigation, itemcount, scrollboxobject, selectedcount, selectedindex, selecteditem, selecteditems, seltype, suppressonselect, tabindex, value methods additemtoselection, appenditem, clearselection, ensureelementisvisible, ensureindexisvisible, getindexoffirstvisiblerow, getindexofitem, getitematindex, getnumberofvisiblerows, getrowcount, getselecteditem, insertitemat, invertselection, movebyoffset, removeitemat, removeitemfromselection, scrolltoindex, selectall...
... preference type: id connects the element to a corresponding preference.
...more information is available in the preferences system article.

tree - Archive of obsolete content
« xul reference home [ examples | attributes | properties | methods | related ] a container which can be used to hold a tabular or hierarchical set of rows of elements.
... builderview type: nsixultreebuilder a reference to the tree builder which constructed the tree data.
... contentview type: nsitreecontentview for trees built with a content builder - that is, those that do not have flags set -- the contentview will be a reference to the nsitreecontentview for the tree.
... firstordinalcolumn type: treecol element a reference to the first treecol element, which or may not be the first column displayed in the tree.

triple - Archive of obsolete content
« xul reference home [ examples | attributes | properties | methods | related ] a triple can be included inside a rule's conditions element.
...it can be a variable reference, an rdf resource uri, or an rdf literal value.
...it can be a variable reference or an rdf resource uri.
... inherited from xul element align, allowevents, allownegativeassertions, class, coalesceduplicatearcs, collapsed, container, containment, context, contextmenu, datasources, dir, empty, equalsize, flags, flex, height, hidden, id, insertafter, insertbefore, left, maxheight, maxwidth, menu, minheight, minwidth, mousethrough, observes, ordinal, orient, pack, persist, popup, position, preference-editable, querytype, ref, removeelement, sortdirection, sortresource, sortresource2, statustext, style, template, tooltip, tooltiptext, top, uri, wait-cursor, width properties inherited properties align, , allowevents, , boxobject, builder, , , , classname, , , , , collapsed, contextmenu, controllers, database, datasources, dir, , , flex, height, hidden, id, , , left, , maxheight, maxwidth, men...

window - Archive of obsolete content
« xul reference home [ examples | attributes | properties | methods | related ] describes the structure of a top-level window.
...note: this has no effect if the tabs on top preference is turned off.
...you can use this as a parameter to getelementbyid() and other dom functions and to reference the element in style sheets.
...ector(), queryselectorall(), removeattribute(), removeattributenode(), removeattributens(), removechild(), removeeventlistener(), replacechild(), setattribute(), setattributenode(), setattributenodens(), setattributens(), setuserdata see also: dom window object methods note the error message "xml parsing error: undefined entity...<window" can be caused by a missing or unreachable dtd file referenced in the xul file.

Creating XULRunner Apps with the Mozilla Build System - Archive of obsolete content
default-prefs.js - these are the default mozilla preferences used by xulrunner when running your app.
...you can add other preferences for things like debugging, as mccoy does (e.g.
...if you've never done this before, you should consult creating xpcom components or another xpcom reference.
... the public/ and src/ directories that you put in the components/ directory will look the same as for an extension that includes c++ components, so you can use the relevant sections of creating custom firefox extensions with the mozilla build system as a reference.

Debugging a XULRunner Application - Archive of obsolete content
there are two different consoles available and various preferences which will ensure that the information you need to know is displayed on them.
... preferences should be in a .js file in the directory %appname%/defaults/preferences/.
... /* debugging prefs */ pref("browser.dom.window.dump.enabled", true); pref("javascript.options.showinconsole", true); pref("javascript.options.strict", true); pref("nglayout.debug.disable_xul_cache", true); pref("nglayout.debug.disable_xul_fastload", true); don't forget to change these preferences back to their defaults when you've finished debugging; leaving them as-is can significantly harm performance and usability.
... see: preference reference for more information about these preferences.

Mozprofile - Archive of obsolete content
in addition to creating profiles, mozprofile can install addons and set preferences.
...command line usage mozprofile may be used to create profiles, set preferences in profiles, or install addons into profiles.
...in addition, subclasses firefoxprofile and thundebirdprofile are available with preset preferences for those applications.
...example: from mozprofile import firefoxprofile # create new profile to pass to mozmill/mozrunner profile = firefoxprofile(addons=["adblock.xpi"]) setting preferences preferences can be set in several ways: using the api: you can pass preferences in to the profile class's constructor: obj = firefoxprofile(preferences=[("accessibility.typeaheadfind.flashbar", 0)]) using a json blob file: mozprofile --preferences myprefs.json using a .ini file: mozprofile --preferences myprefs.ini via the command line: mozprofile --pref key:value --pref key:value [...] when setting preferences from an .ini file or the --pref switch, the value will be interpolated as an integer or a boolean (true/false) if possible.

JavaClass - Archive of obsolete content
summary core object a javascript reference to a java class.
... created by a reference to the class name used with the packages object: packages.javaclass javaclassis the fully-specified name of the object's java class.
... description a javaclass object is a reference to one of the classes in a java package, such as netscape.javascript.jsobject.
... a javapackage object is a reference to a java package, such as netscape.javascript.

RDF in Mozilla FAQ - Archive of obsolete content
the datasource will remain "cached" until the last reference to the datasource is released.
... for example, rdf:foo would load: @mozilla.org/rdf/datasource;1?name=foo as with rdf/xml datasources, a datasource that is retrieved this way is "cached" by the rdf service until the last reference is dropped.
...to do this, add the following line to your preferences file.
... (shut down mozilla first since it overwrites your preferences file when you quit.) user_pref("signed.applets.codebase_principal_support", true); mozilla will ask you if you want to grant the scripts in duplicates.xul permission to access xpconnect; respond in the affirmative.

Windows Media in Netscape - Archive of obsolete content
activexobject both geckoactivexobject and activexobject work very similarly, with one key difference: both take a programmatic id (progid) and use it to create a reference to the windows media player.
...unlike using the progid as an argument, using wmplayer.ocx.7 as an argument to both these apis creates a fully usable reference to the windows media player 7 or 9 control, with all the methods and properties exposed to javascript.
... <object id="playerex2" classid="clsid:6bf52a52-394a-11d3-b153-00c04f79faa6" height="200" width="200"> <param name="uimode" value="full" /> <param name="autostart" value="true" /> <param name="url" value="preludesteel.wma" /> your browser does not support the activex windows media player </object> the classid attribute references the clsid of windows media player 7 and above -- windows media player versions before 7 used a different clsid.
...qualifying references with document.

How CSS is structured - Learn web development
you reference an external css stylesheet from an html <link> element: <!doctype html> <html> <head> <meta charset="utf-8"> <title>my css experiment</title> <link rel="stylesheet" href="styles.css"> </head> <body> <h1>hello world!</h1> <p>this is my first css example</p> </body> </html> the css stylesheet file might look like this: h1 { color: blue; background-color: yellow; ...
... border: 1px solid black; } p { color: red; } the href attribute of the <link> element needs to reference a file on your file system.
...mdn's css reference is a good resource for more information about any shorthand property.
... body {font: 1em/150% helvetica, arial, sans-serif; padding: 1em; margin: 0 auto; max-width: 33em;} @media (min-width: 70em) { body {font-size: 130%;} } h1 {font-size: 1.5em;} div p, #id:first-line {background-color: red; border-radius: 3px;} div p {margin: 0; padding: 1em;} div p + p {padding-top: 0;} for your own projects, you will format your code according to personal preference.

The HTML5 input types - Learn web development
if you want more detail on browser support, you should consult our html forms element reference, and in particular our extensive <input> types reference.
... to actually display the current value, and update it as it changed, you must use javascript, but this is relatively easy to do: const price = document.queryselector('#price'); const output = document.queryselector('.price-output'); output.textcontent = price.value; price.addeventlistener('input', function() { output.textcontent = price.value; }); here we store references to the range input and the output in two variables.
...note that the usage of these types is quite complex, especially considering browser support (see below); to find out the full details, follow the links below to the reference pages for each type, including detailed examples.
... the reference pages linked to above provide suggestions on how to program fallbacks for non-supporting browsers; another option is to consider using a javascript library to provide a date picker.

JavaScript basics - Learn web development
you did this by using a function called queryselector() to grab a reference to your heading, and then store it in a variable called myheading.
... let myvariable = true; array this is a structure that allows you to store multiple values in a single reference.
...you stored a reference to your <img> element in the myimage variable.
...this takes references to the new button and the heading, storing each inside variables: let mybutton = document.queryselector('button'); let myheading = document.queryselector('h1'); add the function below to set the personalized greeting.

Responsive images - Learn web development
load the image referenced in the srcset list that has the same size as the slot or, if there isn't one, the first image that is bigger than the chosen slot size.
...instead, those browsers will go ahead and load the image referenced in the src attribute as normal.
... src="elva-fairy-640w.jpg" alt="elva dressed as a fairy"> in this example, the following css is applied to the image so that it will have a width of 320 pixels on the screen (also called css pixels): img { width: 320px; } in this case, sizes is not needed — the browser simply works out what resolution the display is that it is being shown on, and serves the most appropriate image referenced in the srcset.
...just as we saw with <img> above, <source> can take a srcset attribute with multiple images referenced, as well as a sizes attribute.

Functions — reusable blocks of code - Learn web development
now try entering the following in your console output(y); output(z); both of these should return an error along the lines of "referenceerror: y is not defined".
... finally, try updating your code like this: function a() { let y = 2; output(z); } function b() { let z = 3; output(y); } save and reload again, and try this again in your javascript console: a(); b(); this time the a() and b() calls will both return an annoying referenceerror: variable name is not defined error — this is because the output() calls and the variables they are trying to print are not in the same function scopes — the variables are effectively invisible to those function calls.
... note: the referenceerror: "x" is not defined error is one of the most common you'll encounter.
...the example above would throw an error referenceerror: myvalue is not defined, because although the myvalue variable is defined in the same scope as the function calls, it is not defined inside the function definitions — the actual code that is run when the functions are called.

Introduction to web APIs - Learn web development
we start by creating an audiocontext instance inside which to manipulate our track: const audiocontext = window.audiocontext || window.webkitaudiocontext; const audioctx = new audiocontext(); next, we create constants that store references to our <audio>, <button>, and <input> elements, and use the audiocontext.createmediaelementsource() method to create a mediaelementaudiosourcenode representing the source of our audio — the <audio> element will be played from: const audioelement = document.queryselector('audio'); const playbtn = document.queryselector('button'); const volumeslider = document.queryselector('.volume'); const a...
... the document object model (dom) api also has a simple entry point — its features tend to be found hanging off the document object, or an instance of an html element that you want to affect in some way, for example: const em = document.createelement('em'); // create a new em element const para = document.queryselector('p'); // reference an existing p element em.textcontent = 'hello there!'; // give em some text content para.appendchild(em); // embed em inside para the canvas api also relies on getting a context object to use to manipulate things, although in this case, it's a graphical context rather than an audio context.
... its context object is created by getting a reference to the <canvas> element you want to draw on, and then calling its htmlcanvaselement.getcontext() method: const canvas = document.queryselector('canvas'); const ctx = canvas.getcontext('2d'); anything that we want to do to the canvas is then achieved by calling properties and methods of the context object (which is an instance of canvasrenderingcontext2d), for example: ball.prototype.draw = function() { ctx.beginpath(); ctx.fillstyle = this.color; ctx.arc(this.x, this.y, this.size, 0, 2 * math.pi); ctx.fill(); }; note: you can see this code in action in our bouncing balls demo (see it running live also).
...the handler properties that allow us to run functions when events fire are generally listed in our reference material in separate "event handlers" sections.

Inheritance in JavaScript - Learn web development
setting teacher()'s prototype and constructor reference all is good so far, but we have a problem.
... we have defined a new constructor, and it has a prototype property, which by default just contains an object with a reference to the constructor function itself.
...after adding the last line, teacher.prototype's constructor property is now equal to person(), because we just set teacher.prototype to reference an object that inherits its properties from person.prototype!
... therefore running the above code will give an error: uncaught referenceerror: must call super constructor in derived class before accessing 'this' or returning from derived constructor for sub-classes, the this intialization to a newly allocated object is always dependant on the parent class constructor, i.e the constructor function of the class from which you're extending.

Aprender y obtener ayuda - Learn web development
some of the articles will be tutorials, to teach you a certain technique or important concept (such as "learn how to create a video player" or "learn the css box model"), and some of the articles will be reference material, to allow you to look up details you may have forgotten (such as "what is the syntax of the css background property"?) mdn web docs is very good for both types — the area you are currently in is great for learning techniques and concepts, and we also have several giant reference sections allowing you to look up any syntax you can't remember.
...many people prefer textual articles for more in-depth learning and reference material, and videos for quick explanations of concepts and new features, but it is really up to you what you prefer to learn from.
... many mdn web docs reference pages provide interactive examples too, where you can alter the code and see how the live result changes.
... using mdn the site you are already on has a wealth of information available to you — both reference material for looking up code syntax, and guides/tutorials for learning techniques.

Introduction to the server side - Learn web development
dynamic sites can highlight content that is more relevant based on user preferences and habits.
... it can also make sites easier to use by storing personal preferences and information — for example reusing stored credit card details to streamline subsequent payments.
... a dynamic site can return different data for a url based on information provided by the user or stored preferences and can perform other operations as part of returning a response (e.g.
... companies like amazon use server-side programming to construct search results for products, make targeted product suggestions based on client preferences and previous buying habits, simplify purchases, etc.

Handling common accessibility problems - Learn web development
safari: select develop > disable styles from the main menu (to enable the develop menu, choose safari > preferences > advanced > show develop menu in menu bar).
...to turn it on, you have to go to preferences > advanced > general, then uncheck "always use the cursor keys to navigate within pages".
... next, you have to open your mac's system preferences app, then go to keyboard > shortcuts, then select the all controls radio button.
... safari doesn't allow you to tab through links by default; to enable this, you need to open safari's preferences, go to advanced, and check the press tab to highlight each item on a webpage checkbox.

How Mozilla's build system works
config.status starts with the main moz.build file and then recurses into all referenced files and directories.
... reference many of python's built-in or global functions (they are not made available to the execution environment).
...to view the variables and functions available in your checkout of the tree, run the following: mach mozbuild-reference or, you can view the raw file at /python/mozbuild/mozbuild/frontend/context.py.
...variables are defined by the syntax variable = value, and the value of a variable is referenced by writing $(variable).

IPDL Tutorial
the parameters of the recv* methods (const nscstring& pluginpath in the example) are references to temporary objects, so copy them if you need to keep their data around.
... struct namevaluepair { nscstring name; nscstring value; }; in implementation code, these structs can be created and used like so: namevaluepair entry(astring, anotherstring); foo(entry.name(), entry.value()); // named accessor functions return references to the members arrays ipdl has simple syntax for arrays: invokemethod(nscstring[] args); in c++ this is translated into a nstarray reference: virtual bool recvinvokemethod(nstarray<nscstring>& args); ipdl's generated data structures can be used in several protocols if they are defined in a separate .ipdlh file.
...otherfunction above) the parameter is, for both resolve and success callbacks, the returns value itself (as a const reference); if the message returns multiple values (e.g.
...}; in some cases, however, external code may hold references to actor implementations which require refcounting or other lifetime strategies.

Services.jsm
the services.jsm javascript code module offers a wide assortment of lazy getters that simplify the process of obtaining references to commonly used services.
... to use it, you first need to import the code module into your javascript scope: const {services} = chromeutils.import("resource://gre/modules/services.jsm"); then you can obtain references to services by simply accessing them from the services object exported by the code module.
... for example, to obtain a reference to the preferences service: var prefsservice = services.prefs; provided service getters service accessor service interface service name androidbridge nsiandroidbridge 1 appinfo nsixulappinfo nsixulruntime application information service appshell nsiappshellservice application shell service blocklist nsiblocklistservice blocklist service cache nsicacheservice cache service cache2 nsicachestorageservice cache storage service clipboard nsiclipboard clipboard console nsiconsoleservice error console service contentprefs nsicontentprefservice content preferences service cookies nsicookiemanager2 co...
... mm nsimessagebroadcaster nsiframescriptloader global frame message manager3 obs nsiobserverservice observer service perms nsipermissionmanager permission manager service ppmm nsimessagebroadcaster nsiprocessscriptloader global parent process message manager3 prefs nsiprefbranch nsiprefbranch2 nsiprefservice preferences service prompt nsipromptservice prompt service scriptloader mozijssubscriptloader javascript subscript loader service scriptsecuritymanager nsiscriptsecuritymanager script security manager search nsibrowsersearchservice browser search service startup nsiappstartup application startup service storage mozistorag...

Mozilla Content Localized in Your Language
reference material can be find here calendar calendar view: which date is considered the first day of the week, sunday or monday?
...reference material on other languages can be found here.
...include a note to look for, reference, and adhere to a national standard for the language, where possible.
... add style :: register, variants/slang, awkward, company style (branding guidelines), inconsistent style, third-party style, unidiomatic (steps to define your approach to culture-specific & locale-specific references) ...

Mozilla DOM Hacking Guide
since i am myself still learning how it works, don't expect this to be a complete reference quite yet.
... #define _dom_classinfo_map_begin(_class, _ifptr, _has_class_if) { nsdomclassinfodata &d = sclassinfodata[edomclassinfo_##_class##_id]; d.mprotochaininterface = _ifptr; d.mhasclassinterface = _has_class_if; static const nsiid *interface_list[] = { in this macro, |d| is a reference to the entry of the sclassinfodata array that corresponds to the class passed as an argument to the macro.
...we initialize "data" to be a reference to the nsdomclassinfodata object that corresponds to the dom class we want to "help".
... resources of interest the xpidl reference mapping dom objects to their c++ class modularization techniques scriptable helper flags this chapter has not been written yet.

Mozilla Port Blocking
modifying mozilla's port blocking at run time users can modify the default port blocking through the addition of preferences containing comma delimited lists of port numbers to the user.js file (for single users with the user_pref(…) command) in the user's profile directory.
...things to do allow user preference to override default port blocking.
... currently you need to add preferences to either user.js or all.js.
... per protocol port blocking/enabling preferences.

Mozilla Web Developer FAQ
if you are using a legacy encoding that cannot represent that character, you can use a numeric character reference: &#945;.
... externally defined character entities other than the five pre-defined ones (&lt;, &gt;, &amp;, &quot; and &apos;) are only supported if the document references a public identifier for which there is a mapping in mozilla’s pseudo-dtd catalog and the document has not been declared standalone.
...(numeric character references are safe, too.) document.write() is not supported.
... style sheets can be references using processing instructions.

Refcount tracing and balancing
however, having an nscomptr log and using it in the creation of the balance tree allows addref and release calls that we know are matched to be eliminated from the tree, so it makes it much easier to debug reference count leaks of objects that have a large amount of reference counting traffic.
... you may use an object's serial number with the following variable to further restrict the reference count tracing: xpcom_mem_log_objects set this variable to a comma-separated list of object serial number or ranges of serial number, e.g., 1,37-42,73,165 (serial numbers start from 1, not 0).
...what we'd hope to see is a tree that looks like: .root: bal=0 main: bal=0 dosomethingwithfooandreturnittoo: bal=1 ns_newfoo: bal=1 that is, ns_newfoo() "leaks" a single reference count; this leak is "inherited" by dosomethingwithfooandreturnittoo(); but is finally balanced by a release() in main().
...if you've checked (see above) that the leak wasn't from a smart pointer, you can ignore the references that came from smart pointers (where we can use the pointer identity of the smart pointer to match the addref and the release).

Midas
see: more about security preferences note: the shortcut key will automatically trigger this command (typically accel-c) with or without the signed js or any code on the page to handle it.
...see: more about security preferences note: the shortcut key will automatically trigger this command (typically accel-x) with or without the signed js or any code on the page to handle it.
... this command will insert an image (referenced by the given url) at the insertion point.
...user_pref("capability.policy.policynames", "allowclipboard"); user_pref("capability.policy.allowclipboard.clipboard.paste", "allaccess"); see: more about security preferences note: the shortcut key will automatically trigger this command (typically accel-v) with or without the signed js or any code on the page to handle it.

PR_LoadLibrary
loads a referenced library.
... returns if successful, returns a reference to an opaque prlibrary object.
... description this function loads and returns a reference to the specified library.
... the returned reference becomes the library's identity.

An overview of NSS Internals
those handles are reference counted.
...the application should always call the appropriate dereference (destroy) functions once a handle is no longer needed.
...such an operation might fail at runtime if data elements are still being referenced.
...you can find more details in the nspr reference documents.

nss tech note7
unlike seckeypublickey and seckeyprivatekey, pk11symkey objects are reference counted.
... use pk11_referencesymkey() to acquire a reference to a symmetric key (pk11symkey *).
... use pk11_freesymkey() to release a reference to a symmetric key (pk11symkey *); the symmetric key is destroyed when its reference count becomes zero.
... sample code sample code 4: pki encryption references rsa labs pkcs #1 web site rfc 3447: rsa pkcs #1 v2.1 poupou's blog: common question: how to encrypt using rsa ...

NSS Tools sslstrength
the letter in the first column of the output is used to identify the cipher preferences in the ciphers= command.
... restricting ciphers by default, sslstrength assumes that all the preferences are on, so it will use any preferences in your policy.
...for example, ciphers=bfi will turn on these cipher preferences and turn off all others.
... other for references, here is a table of well-known ssl port numbers: https 443 imaps 993 nntps 563 ...

Python binding for NSS
nspr reference.
... nss/nspr objects whose collection elements can be referenced by name support associative indexing.
... certificate_new_from_certcertificate now takes add_reference parameter to properly reference count certs, should fix shutdown busy problems.
... fix reference counting bug in pk11_password_callback() which contributed to nss not being able to shutdown due to resources still in use.

NSS Key Functions
back to the nss reference main page.
...when an application makes a copy of a particular certificate or key structure that already exists in memory, ssl makes a shallow copy--that is, it increments the reference count for that object rather than making a whole new copy.
... when you call cert_destroycertificate or seckey_destroyprivatekey, the function decrements the reference count and, if the reference count reaches zero as a result, both frees the memory and sets all the bits to zero.
... the use of the word "destroy" in function names or in the description of a function implies reference counting.

NSS Tools sslstrength
the letter in the first column of the output is used to identify the cipher preferences in the ciphers= command.
...restricting ciphers by default, sslstrength assumes that all the preferences are on, so it will use any preferences in your policy.
...for example, ciphers=bfi will turn on these cipher preferences and turn off all others.
... other for references, here is a table of well-known ssl port numbers: https 443 imaps 993 nntps 563 ...

GCIntegration - SpiderMonkey Redirect 1
before the pointer is modified (except initializing writes, which don't need a barrier), you should call incrementalreferencebarrier() or incrementalvaluebarrier(), passing it the value the pointer held before the write.
...now let's assume, between the left and right frames, that some code has read the weak pointer to c and then created a regular (strong) reference from b to c.
... the solution to this problem is to require a read barrier on every weak reference.
...the main difference is that every reference will need to be rooted.

JSAPI User Guide
for more details, see the jsapi reference.
...a js::value can be a number, a string, a boolean value, a reference to an object (like an object, array, date, or function), or one of the special values null or undefined.
...how can a malicious script get a reference to an object from another sandbox?
...once a malicious script gets a reference to a single object in a sandbox, it can use that object to get a reference to the sandbox's global object, and from there, almost any other object or function in that sandbox.

XPCOM hashtable guide
data type hashtable class none (for a hash set) nsthashtable simple types (numbers, booleans, etc) nsdatahashtable structs or classes (nsstring, custom defined structs or classes that are not reference-counted) nsclasshashtable reference-counted concrete classes nsrefptrhashtable interface pointers nsinterfacehashtable each of these classes is a template with two parameters.
... key type hashkey class strings nsstringhashkey/nscstringhashkey integers nsuint32hashkey/nsuint64hashkey pointers nsptrhashkey<t> owned interface pointers nsisupportshashkey reference-counted concrete classes nsrefptrhashkey there are a number of more esoteric hashkey classes in nshashkeys.h, and you can always roll your own if none of these fit your needs (make sure you're not duplicating an existing hashkey class though!) once you've determined what hashtable and hashkey classes you need, you can put it all together.
... a few examples: a hashtable that maps utf-8 origin names to a dom window - nsinterfacehashtable<nscstringhashkey, nsidomwindow> a hashtable that maps 32 bit integers to floats - nsdatahashtable<nsuint32hashkey, float> a hashtable that maps nsisupports pointers to reference counted cacheentrys - nsrefptrhashtable<nsisupportshashkey, cacheentry> a hashtable that maps jscontext pointers to a contextinfo struct - nsclasshashtable<nsptrhashkey<jscontext>, contextinfo> a hashset of strings - nsthashtable<nsstringhashkey> hashtable api the hashtable classes all expose the same basic api.
... the hashtables that hold references to pointers (nsrefptrhashtable and nsinterfacehashtable) also have getweak methods that return non-addrefed pointers.

Interfacing with the XPCOM cycle collector
if the collector finds a group of objects that all refer back to one another, and establishes that the objects' reference counts are all accounted for by internal pointers within the group, it considers that group cyclical garbage, which it then attempts to free.
...it will not crash if there are extra owning pointers, but it will find itself unable to account for the reference counts it finds in the owned objects, so may fail to collect cycles.
... the main macro for traverse is ns_impl_cycle_collection_traverse: ns_impl_cycle_collection_traverse(msomemember) unlink works similarly: ns_impl_cycle_collection_unlink(msomemember) these macros should handle a variety of cases, such as reference counted pointers to cycle collected nsisupports or non-nsisupports objects, as well as arrays of these pointers.
... handling js::value fields recall (or see here) that a js::value may reference a string or object and is subject to gc.

Observer Notifications
if your component requires access to the user profile, or any services which require access to the profile (preferences, bookmarks, and so on) then a common pattern is to register with the nsicategorymanager for the app-startup topic which can be done in the component's registration code, and then in that notification register with the observer service for the profile-after-change notification.
...you will not be able to access user preferences, bookmarks, or anything that uses the profile folder until this event occurs.
...when this is sent, it is possible that other windows may still be open, such as the download manager or preferences.
... topic description cookie-changed called upon a cookie change (added, changed, cleared, or deleted) cookie-rejected called when the setting of a cookie was rejected by the browser (per the user's preferences) http-on-response-set-cookie this is fired only when a cookie is created due to the presence of set-cookie header in the response header of any network request.

NS_NewLocalFile
« xpcom api reference summary the ns_newlocalfile function creates an instance of nsilocalfile that provides a platform independent representation of a file path.
...this path does not need to reference an existing file.
... aresult [out] a reference to the newly created nsilocalfile instance.
... example code // create a local file that references c:\foo.txt nsresult rv; nscomptr<nsilocalfile> file; rv = ns_newlocalfile(nsembedstring(l"c:\\foo.txt"), pr_false, getter_addrefs(file)); if (ns_failed(rv)) return rv; note: gcc requires the -fshort-wchar option to compile this example since prunichar is an unsigned short.

NS_NewNativeLocalFile
« xpcom api reference summary the ns_newnativelocalfile function creates an instance of nsilocalfile that provides a platform independent representation of a file path.
...this path does not need to reference an existing file.
... aresult [out] a reference to the newly created nsilocalfile instance.
... example code // create a local file that references c:\foo.txt nsresult rv; nscomptr<nsilocalfile> file; rv = ns_newnativelocalfile(nsembedcstring("c:\\foo.txt"), pr_false, getter_addrefs(file)); if (ns_failed(rv)) return rv; here, nsembedcstring is used to convert the ascii string literal to an object that can be passed as a const nsacstring& parameter.

operator=
« xpcom api reference summary this operator is a shortcut for the assign family of functions.
... return values this operator returns a reference back to the object being modified to allow operator chaining.
... return values this operator returns a reference back to the object being modified to allow operator chaining.
... return values this operator returns a reference back to the object being modified to allow operator chaining.

operator+=
« xpcom api reference summary this operator+= is a shortcut for the append family of functions.
... return values this operator returns a reference back to the object being modified to allow operator chaining.
... return values this operator returns a reference back to the object being modified to allow operator chaining.
... return values this operator returns a reference back to the object being modified to allow operator chaining.

operator=
« xpcom api reference summary this operator= is a shortcut for the append family of functions.
... return values this operator returns a reference back to the object being modified to allow operator chaining.
... return values this operator returns a reference back to the object being modified to allow operator chaining.
... return values this operator returns a reference back to the object being modified to allow operator chaining.

XPCOM glue classes
ed, typically on destruction of the object.</t>nsautoreftraitsnsautoreftraits<t> is a template class describing traits of resources held by objects of class nsautoref<t> and/or nscountedref<t>.</t>nsautostringclass declarationnsautostring (external)class declarationnscautostringclass declarationnscautostring (external)class declarationnscomptrthis utility class simplifies managing xpcom interface references from c++ code.nscountedrefnscountedref<t> is a template class implementing an object that takes a strong reference to a reference-counted resource that must be released, typically on destruction of the object.</t>nscstringclass declarationnscstring externalclass declarationnscstringcontainer (external)class declaration nscstringencodingthe nscstringencoding enumeration describes the set of c...
...these routines allow easy access to xpcom's global nsimemory implementation without having to go through the service manager to get it.nspromiseflatcstringclass declarationnspromiseflatstringclass declarationnsrefptrrefptr (formerly known as nsrefptr, see bug 1207245) is a general class to implement reference counting pointers for objects.
... like with nscomptr, it is the responsibility of the object itself to implement reference counting.
... this is done using the functions addref() and release(), which respectively modify a variable of type nsautorefcnt, which basically is a wrapper around a count of the number of references refering to the class.nsstringclass declarationnsstring externalclass declarationnsstringcontainer (external)class declarationnssupportsweakreferenceinherit from this c++ class to add canonical support for nsisupportsweakreference.nsxpidlcstringclass declarationnsxpidlstringclass declarationpromiseflatcstring (external)class declarationpromiseflatstring (external)class declaration ...

IAccessibleTableCell
[propget] hresult columnheadercells( [out, size_is(, ncolumnheadercells,)] iunknown cellaccessibles, [out] long ncolumnheadercells ); parameters cellaccessibles pointer to an array of references to cell accessibles.
...[propget] hresult rowheadercells( [out, size_is(, nrowheadercells,)] iunknown cellaccessibles, [out] long nrowheadercells ); parameters cellaccessibles pointer to an array of references to cell accessibles.
...table() returns a reference to the accessbile of the containing table.
... [propget] hresult table( [out] iunknown table ); parameters table returns a reference to the iunknown of the containing table.

IAccessibleText
x x coordinate of the top left corner of the bounding box of the referenced character.
... y y coordinate of the top left corner of the bounding box of the referenced character.
... width width of the bounding box of the referenced character.
... height height of the bounding box of the referenced character.

nsIFaviconService
if you pass an icon uri that we've never seen, you'll get back a uri that references an invalid icon.
...if you pass an icon uri that we've never seen, you'll get back a uri that references an invalid icon.
...you should reference the chrome image yourself.
...you should reference the chrome image yourself.

nsINavHistoryQuery
ze_is(count)] out unsigned long transitions); void setfolders([const,array, size_is(foldercount)] in long long folders, in unsigned long foldercount); void settransitions([const,array, size_is(count)] in unsigned long transitions, in unsigned long count); attributes attribute type description absolutebegintime prtime read only: retrieves the begin time value that the currently loaded reference points + offset resolve to.
... absoluteendtime prtime read only: retrieves the end time value that the currently loaded reference points + offset resolve to.
... begintimereference long one of the constants time_relative_* which indicates how to interpret the corresponding begin time value.
... endtimereference long one of the constants time_relative_* which indicates how to interpret the corresponding end time value.

nsIScrollable
inherits from: nsiscrollable last changed in gecko 29.0 (firefox 29.0 / thunderbird 29.0 / seamonkey 2.26) method overview long getcurscrollpos(in long scrollorientation); obsolete since gecko 29.0 long getdefaultscrollbarpreferences(in long scrollorientation); void getscrollbarvisibility(out boolean verticalvisible, out boolean horizontalvisible); void getscrollrange(in long scrollorientation, out long minpos, out long maxpos); obsolete since gecko 29.0 void setcurscrollpos(in long scrollorientation, in long curpos); obsolete since gecko 29.0 void setcurscrollposex(in long curhorizontalpo...
...s, in long curverticalpos); obsolete since gecko 29.0 void setdefaultscrollbarpreferences(in long scrollorientation, in long scrollbarpref); void setscrollrange(in long scrollorientation, in long minpos, in long maxpos); obsolete since gecko 29.0 void setscrollrangeex(in long minhorizontalpos, in long maxhorizontalpos, in long minverticalpos, in long maxverticalpos); obsolete since gecko 29.0 constants scroll orientations scroll orientations a scrollbar can be in.
... return value getdefaultscrollbarpreferences() long getdefaultscrollbarpreferences( in long scrollorientation ); parameters scrollorientation an integer representing the orientation of the scrollbar.
... setdefaultscrollbarpreferences() void setdefaultscrollbarpreferences( in long scrollorientation, in long scrollbarpref ); parameters scrollorientation an integer representing the orientation of the scrollbar.

nsIServiceManager
aiid, [iid_is(aiid),retval] out nsqiresult result); void getservicebycontractid(in string acontractid, in nsiidref aiid, [iid_is(aiid),retval] out nsqiresult result); boolean isserviceinstantiated(in nscidref aclass, in nsiidref aiid); boolean isserviceinstantiatedbycontractid(in string acontractid, in nsiidref aiid); methods getservice() this method returns a reference to a particular xpcom service given the classid of the service.
... getservicebycontractid() this method returns a reference to a particular xpcom service given the contractid of the service.
...and, moreover such languages typically offer more convenient mechanisms to acquire references to xpcom services and components.
... a user of a service may keep references to services until application shutdown.

nsIUpdatePrompt
if the app.update.silent preference is true or the user interface is already displayed the call will be a no-op.
...if background is true (for example the download was not user initiated) and the app.update.silent preference is true the call will be a no-op.
...if the app.update.silent preference is true the call will be a no-op.
...if the app.update.silent preference is true, the app.update.showinstalledui preference is false, or the user interface is already displayed the call will be a no-op.

XUL Overlays
in the base file, the html image element points to a netscape gif icon: <html:img id="foo" src="netscapeimage.gif"/> in the overlay, an element with the same id attribute specifies a different image, and that image is superimposed on top of the original netscape image as part of the merge process: <html:img id="foo" src="mozillaimage.gif"/> when the base file references an overlay file which contains the html image element above, the new src attribute is superimposed over the original, and the mozilla icon replaces the netscape icon.
...using the id attribute on an otherwise empty node in the base file, you can essentially reference a subtree defined in an overlay file and merge it in wherever it's needed.
...the following snippet shows a dialog with custom ui elements at the top and a reference to the overlay's ok and cancel buttons at the bottom: <box align="horizontal" id="bx1" flex="100%" style="margin-bottom: 1em; width: 100%;"> <html:input type="checkbox" id="dialog.newwindow"/> <html:label for="dialog.newwindow">&openwin.label;</html:label> <spring flex="100%"/> </box> <box id="okcancelbuttons"/> for more detail, see the ok and cancel button definitions being referenced here i...
...toolbars, submenus, boxes, and any other subtrees that appear in multiple places can be defined in overlays files in this way and referenced for reuse wherever necessary.

Filelink Providers
saving custom settings in preferences custom settings for a provider are saved using the preferences api.
... saving the preferences is handled automatically by the dialog code.
... once this is done, the field is accessible from within the implementation via the preferences api using the key mail.cloud_files.accounts.account_key.username where account_key is the value passed into the implementations init function.
... management interface once an account has been created, it is manageable from within the preferences dialog, in the attachment pane, in the outgoing tab.

Memory Management
pointers to that memory must be carefully managed to make sure the underlying memory is still referenced.
... keeping objects alive the following js-ctypes objects will hold references to objects, keeping them alive.
...be sure to hold an explicit reference so that the referent object doesn't get into garbage collection, before you're done using it.
... closures you also need to be sure to retain references to any javascript code that native code may call back into.

Standard OS Libraries
documentation for gdk functions are found here: gnome developer :: gdk 2 reference manual.
... for gdk3 documentation is found here: gnome developer :: gdk 3 reference manual.
...the list of the exposed symbols/functions can be found here: gnome developer :: gtk+ reference manual.
...this article links to a fully funcitonal demo that can be copied and pasted into scratchpad, as a quick reference here is the link to that demo: following the android toasts tutorial from a jni prespective.

Browser Console - Firefox Developer Tools
to enable it set the devtools.chrome.enabled preference to true in about:config, or set the "enable browser chrome and add-on debugging toolboxes" (firefox 40 and later) option in the developer tool settings.
... components.utils.import("resource://gre/modules/console.jsm"); console.log("hello from firefox code"); //output messages to the console learn more: console api reference console.jsm source code in the mozilla dxr hudservice there is also the hudservice which allows access to the browse console.
...by default, only error messages are logged to the console, although you can change this in the browser's preferences.
...to enable it set the devtools.chrome.enabled preference to true in about:config, or set the "enable chrome debugging" option in the developer tool settings.

Index - Firefox Developer Tools
this is useful for understanding the "retained size" of objects allocated by your site: that is, the size of the objects themselves plus the size of the objects that they keep alive through references.
... 70 use the inspector api inspector, reference, référence(2), tools firefox add-ons may access the following objects from the chrome://browser/content/devtools/inspector/inspector.xul context: 71 use the inspector from the web console guide, inspector, tools the element that's currently selected in the page inspector can be referenced in the web console using the variable $0.
... 137 source map errors debugger, debugging, dev tools, reference, source maps, tools source maps are json files providing a way to associate transformed sources, as seen by the browser, with their original sources, as written by the developer.
... 154 web console remoting debugging, reference, référence(2), web console this document describes the way web console remoting works.

Examine and edit CSS - Firefox Developer Tools
you can: toggle pseudo-classes; toggle classes; add a new rule; change the display based on the color scheme preference (as of firefox 72, you must set devtools.inspector.color-scheme-simulation.enabled to true in the configuration editor to enable this feature); change the display based on print media rules.
... view @media rules for color-scheme-preference as of firefox 72, you must set devtools.inspector.color-scheme-simulation.enabled to true in the configuration editor to enable this feature.
... if you have set privacy.resistfingerprinting to true, prefers-color-scheme preference is overridden to light.
...(this calculated value is exactly the same as what getcomputedstyle would return.) you can tab through the styles to select them, and you can find more information about each property — pressing f1 on a selected property will open up its mdn reference page.

BasicCardRequest.supportedNetworks - Web APIs
chrome 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.ie no support noopera no support nosafari ?
...port nochrome android full support 57firefox android 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.opera android no support nosafari ios ?

BasicCardResponse.billingAddress - Web APIs
chrome 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.ie no support noopera no support nosafari ?
...port nochrome android full support 57firefox android 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.opera android no support nosafari ios ?

BasicCardResponse.cardNumber - Web APIs
chrome 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.ie no support noopera no support nosafari ?
...port nochrome android full support 57firefox android 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.opera android no support nosafari ios ?

BasicCardResponse.cardSecurityCode - Web APIs
chrome 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.ie no support noopera no support nosafari ?
...port nochrome android full support 57firefox android 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.opera android no support nosafari ios ?

BasicCardResponse.cardholderName - Web APIs
chrome 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.ie no support noopera no support nosafari ?
...port nochrome android full support 57firefox android 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.opera android no support nosafari ios ?

BasicCardResponse.expiryMonth - Web APIs
chrome 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.ie no support noopera no support nosafari ?
...port nochrome android full support 57firefox android 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.opera android no support nosafari ios ?