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RTCIceCandidateStats.priority - Web APIs
the rtcicecandidatestats dictionary's
priority property is a positive integer value indicating the
priority (or desirability) of the described candidate. during ice negotiation while setting up a webrtc peer connection, the
priority values reported to the remote peer by a user agent are used to determine which candidates are considered "more desirable". the higher the value, the more desirable the candidate is. syntax
priority = rtcicecandidatestats.
priority; value a positive integer indicating the
priority of the rtcicecandidate described by the rtcicecandidatestats object. the value may be anywhere from 1 to 2,147,483,647. ...
...o the remote peer by a user agent are used to determine which candidates are considered "more desirable". the higher the value, the more desirable the candidate is. syntax
priority = rtcicecandidatestats.
priority; value a positive integer indicating the
priority of the rtcicecandidate described by the rtcicecandidatestats object. the value may be anywhere from 1 to 2,147,483,647. determining
priority the ice specification describes how user agents and other software using webrtc should calculate the
priority. ...
...e, the more desirable the candidate is. syntax
priority = rtcicecandidatestats.
priority; value a positive integer indicating the
priority of the rtcicecandidate described by the rtcicecandidatestats object. the value may be anywhere from 1 to 2,147,483,647. determining
priority the ice specification describes how user agents and other software using webrtc should calculate the
priority. ...
...And 6 more matches
RTCIceCandidatePairStats.priority - Web APIs
the higher this value, the better the webrtc layer thinks this pair of candidates is compared to the others, and the more likely a pair is to be selelcted for use. ...
...the higher this value, the better the webrtc layer thinks this pair of candidates is compared to the others, and the more likely a pair is to be selelcted for use. ...
...the higher this value, the better the webrtc layer thinks this pair of candidates is compared to the others, and the more likely a pair is to be selelcted for use. ...
...And 2 more matches
nsISupportsPriority
xpcom/threads/nsisupports
priority.idlscriptable this interface exposes the general notion of a scheduled object with an integral
priority value. following unix conventions, smaller (and possibly negative) values have higher
priority. 1.0 66 introduced gecko 1.8 inherits from: nsisupports last changed in gecko 1.8 (firefox 1.5 / thunderbird 1.5 / seamonkey 1.0) this interface does not strictly define what happens when the
priority of an object is changed. an implementation of this interface is free to define the side-effects of changing the
priority of an object. in some cases, changing the
priority of an object may be disallowed (resulting in an exception being thrown) or may simply be ignored. ...
...erbird 1.5 / seamonkey 1.0) this interface does not strictly define what happens when the
priority of an object is changed. an implementation of this interface is free to define the side-effects of changing the
priority of an object. in some cases, changing the
priority of an object may be disallowed (resulting in an exception being thrown) or may simply be ignored. method overview void adjust
priority(in long delta); attributes attribute type description
priority long the object's
priority. it can be modified to change the
priority of the object. typical
priority values are defined in the idl file as
priority_highest ...
priority_lowest. ...
...esulting in an exception being thrown) or may simply be ignored. method overview void adjust
priority(in long delta); attributes attribute type description
priority long the object's
priority. it can be modified to change the
priority of the object. typical
priority values are defined in the idl file as
priority_highest ...
priority_lowest. the implementation is free to truncate a given
priority value to whatever limits are appropriate. typically this attribute is initialized to
priority_normal, but implementations may choose to assign a different initial value. constants constant value description
priority_highest -20 the highest
priority.
priority_high -10 higher than normal
priority.
priority_normal 0 the default
priority.
priority_low 10 lower than normal
priority. pr...
...e appropriate. typically this attribute is initialized to
priority_normal, but implementations may choose to assign a different initial value. constants constant value description
priority_highest -20 the highest
priority.
priority_high -10 higher than normal
priority.
priority_normal 0 the default
priority.
priority_low 10 lower than normal
priority.
priority_lowest 20 the lowest
priority. methods adjust
priority() this method adjusts the
priority attribute by a given amount (delta). void adjust
priority( in long delta ); parameters delta the amount by which to adjust the
priority attribute. see also changing the
priority of http requests for an example of using this interface to adjust the
priority of an http request. ...
RTCIceCandidate.priority - Web APIs
the rtcicecandidate interface's read-only
priority property specifies the candidate's
priority according to the remote peer; the higher this value is, the better the remote peer considers the candidate to be. as is the case with most of rtcicecandidate's properties, the value of
priority is extracted from the candidate a-line string specified when creating the rtcicecandidate. the a-line string is obtained either from the rtcicecandidateinit property candidate or from an a-line string passed into rtcpeerconnection.addicecandidate() instead of an rtcicecandidate. syntax var
priority = rtcicecandidate.
priority; value a long, unsigned integer value indicating the
priority of the candidate according to the remote peer. the larger this value is, the more preferable the remote peer considers this ...
...e rtcicecandidateinit property candidate or from an a-line string passed into rtcpeerconnection.addicecandidate() instead of an rtcicecandidate. syntax var
priority = rtcicecandidate.
priority; value a long, unsigned integer value indicating the
priority of the candidate according to the remote peer. the larger this value is, the more preferable the remote peer considers this candidate to be.
priority is initialized to null if it is not specified in the candidate, or if the candidate string can't be parsed propertly. note: if
priority is null, passing the candidate to addicecandidate() will fail, throwing an operationerror exception. this applies only if the candidate implements the
priority property. usage notes consider this sdp attribute line (a-line) which describes an ice candidate: ...
... candidate string can't be parsed propertly. note: if
priority is null, passing the candidate to addicecandidate() will fail, throwing an operationerror exception. this applies only if the candidate implements the
priority property. usage notes consider this sdp attribute line (a-line) which describes an ice candidate: a=candidate:4234997325 1 udp 2043278322 192.168.0.56 44323 typ host the
priority is the number after the protocol, so it's the fourth field in the candidate string. in this example, the
priority is 2043278322. example this candidate examines the
priority of the candidate and, if it's greater than the
priority of a previously-seen candidate, remembers the candidate for later use. ...
...t the
priority is the number after the protocol, so it's the fourth field in the candidate string. in this example, the
priority is 2043278322. example this candidate examines the
priority of the candidate and, if it's greater than the
priority of a previously-seen candidate, remembers the candidate for later use. var bestcandidate = { candidate: "", sdpmid: null, sdpmlineindex: null,
priority: 0 }; function handlecandidate(candidatestring) { var candidate = new rtcicecandidate(candidatestring); if (candidate.
priority > bestcandidate.
priority) { bestcandidate = candidate; } } specifications specification status comment webrtc 1.0: real-time communication between browsersthe definition of 'rtcicecandidate.
priority' in that specification. candida...
PRThreadPriority
a thread's
priority setting. syntax #include <prthread.h> typedef enum prthread
priority { pr_
priority_first = 0, pr_
priority_low = 0, pr_
priority_normal = 1, pr_
priority_high = 2, pr_
priority_urgent = 3, pr_
priority_last = 3 } prthread
priority; enumerators pr_
priority_first placeholder. pr_
priority_low the lowest possible
priority. this
priority is appropriate for threads that are expected to perform intensive computation. pr_
priority_normal the most commonly expected
priority. pr_
priority_high slightly higher
priority than pr_
priority_normal. this
priority is for threads performing work of high urgency but short duration. pr_
priority_urgent highest
priority. only one thread at a time typically has this
priority. ...
...however, because of the multiple strategies nspr uses to implement threading on various host platforms, nspr priorities are not precisely defined. ...
...e computation. pr_
priority_normal the most commonly expected
priority. pr_
priority_high slightly higher
priority than pr_
priority_normal. this
priority is for threads performing work of high urgency but short duration. pr_
priority_urgent highest
priority. only one thread at a time typically has this
priority. pr_
priority_last placeholder description in general, an nspr thread of higher
priority has a statistically better chance of running relative to threads of lower
priority. however, because of the multiple strategies nspr uses to implement threading on various host platforms, nspr priorities are not precisely defined. at best they are intended to specify a preference in the amount of cpu time that a higher-
priority thread might expect relative to a lower-
priority thread. this prefere...
CSSStyleDeclaration.getPropertyPriority() - Web APIs
the cssstyledeclaration.getproperty
priority() method interface returns a domstring that provides all explicitly set priorities on the css property. syntax var
priority = style.getproperty
priority(property); parameters property is a domstring representing the property name to be checked. return value
priority is a domstring that represents the
priority (e.g. "important") if one exists. if none exists, returns the empty string. ...
...enting the property name to be checked. return value
priority is a domstring that represents the
priority (e.g. "important") if one exists. if none exists, returns the empty string. example the following javascript code checks whether margin is marked as important in a css selector rule: var declaration = document.stylesheets[0].cssrules[0].style; var isimportant = declaration.getproperty
priority('margin') === 'important'; specifications specification status comment css object model (cssom)the definition of 'cssstyledeclaration.getproperty
priority()' in that specification. working draft document object model (dom) level 2 style specificationthe definition of 'cssstyledeclaration' in that specification. obsolete ...
PR_GetThreadPriority
returns the
priority of a specified thread. syntax #include <prthread.h> prthread
priority pr_getthread
priority(prthread *thread); parameter pr_getthread
priority has the following parameter: thread a valid identifier for the thread whose
priority you want to know. ...
PR_SetThreadPriority
sets the
priority of a specified thread. syntax #include <prthread.h> void pr_setthread
priority( prthread *thread, prthread
priority priority); parameters pr_setthread
priority has the following parameters: thread a valid identifier for the thread whose
priority you want to set.
priority the
priority you want to set. description modifying the
priority of a thread other than the calling thread is risky. it is difficult to ensure that the state of the target thread permits a
priority adjustment without ill effects. it is preferable for a thread to specify itself in the thread parameter when it calls pr_setthread
priority. ...
nsMsgPriorityValue
defined in comm-central/ mailnews/ base/ public/ mailnewstypes2.idl typedef long nsmsg
priorityvalue; [scriptable, uuid(94c0d8d8-2045-11d3-8a8f-0060b0fc04d2)] interface nsmsg
priority { const nsmsg
priorityvalue notset = 0; const nsmsg
priorityvalue none = 1; const nsmsg
priorityvalue lowest = 2; const nsmsg
priorityvalue low = 3; const nsmsg
priorityvalue normal = 4; const nsmsg
priorityvalue high = 5; const nsmsg
priorityvalue highest = 6; // the default for a
priority picker const nsmsg
priorityvalue default = 4; }; ...
Index - Learn web development
website consists mostly of text files, so for a fun, pleasant development experience you should choose your text editor wisely. ...
...sign, guide, html, index, l10n:
priority, publishing, theory it's a lot of work to create a professional website, so if you're new to web development, we encourage you to start small. you won't build another facebook right away, but it's not hard to get your own simple website online, so we'll start there. 37 css basics beginner, css, codingscripting, learn, styling, web, l10n:
priority like html, css is not a programming language. it's not a markup language either. css is a style sheet language. css is what you use to selectively style html elements. ...
...ginner, css, codingscripting, learn, styling, web, l10n:
priority like html, css is not a programming language. it's not a markup language either. css is a style sheet language. css is what you use to selectively style html elements. for example, this css selects paragraph text, setting the color to red: 38 dealing with files beginner, codingscripting, files, guide, html, l10n:
priority, theory, website when you are working on a website locally on your computer, you should keep all the related files in a single folder that mirrors the published website's file structure on the server. this folder can live anywhere you like, but you should put it somewhere where you can easily find it, maybe on your desktop, in your home folder, or at the root of your hard drive. 39 ...
...And 32 more matches
Index - Firefox Developer Tools
you can use them to examine, edit, and debug html, css, and javascript. ...
...ls menu in firefox and thunderbird, or by using ctrl/cmd+shift+i in either application. dom inspector is standalone; it supports all toolkit applications, and it's possible to embed it in your own xulrunner app. dom inspector can serve as a sanity check to verify the state of the dom, or it can be used to manipulate the dom by hand, if desired. 10 all keyboard shortcuts tools, l10n:
priority this page lists all keyboard shortcuts used by the developer tools built into firefox. 11 application application, debugging, devtools, firefox, guide, manifests, service workers the application panel provides tools for inspecting and debugging modern web apps (also known as progressive web apps). this includes inspection of service workers and web app manifests. ...
... 45 migrating from firebug firebug, migration when migrating from firebug to the firefox developer tools, you may wonder where the features you loved in firebug are available in the developer tools. the following list aims to help firebug users to find their way into the developer tools. 46 network monitor debugging, dev tools, firefox, guide, networking, tools, l10n:
priority the network monitor shows you all the network requests firefox makes (for example, when it loads a page, or due to xmlhttprequests), how long each request takes, and details of each request. 47 inspecting web sockets javascript, network monitor, webapis, web socket inspector, web sockets since firefox 71, the network monitor has had the ability to inspect web socket con...
...And 14 more matches
Index - MDN Web Docs Glossary: Definitions of Web-related terms
or most html elements. 13 adobe flash adobe, codingscripting, flash, glossary, infrastructure flash is an obsolescent technology developed by adobe for viewing expressive web applications, multimedia content, and streaming media. adobe flash can run from supporting web browsers via a browser plug-in. 14 ajax ajax, codingscripting, glossary, infrastructure, l10n:
priority ajax, which initially stood for asynchronous javascript and xml, is a programming practice of building complex, dynamic webpages using a technology known as xmlhttprequest. 15 algorithm codingscripting, glossary an algorithm is a self-contained series of instructions to perform a function. 16 alignment container alignment container, css, glossary, alignme...
...ossary, http, infrastructure a csp (content security policy) is used to detect and mitigate certain types of website related attacks like xss and data injections. 54 csrf glossary, security csrf (cross-site request forgery) is an attack that impersonates a trusted user and sends a website unwanted commands. 55 css css, codingscripting, glossary, web, l10n:
priority css (cascading style sheets) is a declarative language that controls how webpages look in the browser. 56 css object model (cssom) css, cssom, dom, glossary, web performance the css object model (cssom) is a map of all css selectors and relevant properties for each selector in the form of a tree, with a root node, sibling, descendant, child, and other relationship. the ...
... http, security http strict transport security lets a web site inform the browser that it should never load the site using http and should automatically convert all attempts to access the site using http to https requests instead. it consists in one http header, strict-transport-security, sent by the server with the resource. 194 html codingscripting, glossary, html, l10n:
priority html (hypertext markup language) is a descriptive language that specifies webpage structure. 195 html5 codingscripting, glossary, html, html5, markup the latest stable release of html, html5 takes html from a simple markup for structuring a document to a full app development platform. among other features, html5 includes new elements and javascript apis to enhance stora...
...And 9 more matches
appendNotification - Archive of obsolete content
« xul reference home appendnotification( label , value , image ,
priority , buttons, eventcallback ) return type: element create a new notification and display it. if another notification is already present with a higher
priority, the new notification will be added behind it. label - label to appear on the notification. this should be either a string, or, from gecko 37 onwards, you can pass a documentfragment with rich content as well. keep in mind that this is all xul so using html elements for styling might still need additional css in order to work as you might expect. value - value used to identify the notification image - url of image to appear on the notification. ...
.... this should be either a string, or, from gecko 37 onwards, you can pass a documentfragment with rich content as well. keep in mind that this is all xul so using html elements for styling might still need additional css in order to work as you might expect. value - value used to identify the notification image - url of image to appear on the notification. ...
... string, or, from gecko 37 onwards, you can pass a documentfragment with rich content as well. keep in mind that this is all xul so using html elements for styling might still need additional css in order to work as you might expect. value - value used to identify the notification image - url of image to appear on the notification. if "" then an icon appropriate for the
priority level is used. ...
...And 4 more matches
HTTP Cache
information. code examples tbd opening an entry creating a new entry recreating an already open entry implementation threading the cache api is fully thread-safe. the cache is using a single background thread where any io operations like opening, reading, writing and erasing happen. also memory pool management, eviction, visiting loops happen on this thread. ...
...g, writing and erasing happen. also memory pool management, eviction, visiting loops happen on this thread. the thread supports several
priority levels. dispatching to a level with a lower number is executed sooner then dispatching to higher number layers; also any loop on lower levels yields to higher levels so that scheduled deletion of 1000 files will not block opening cache entries. ...
...ppen. also memory pool management, eviction, visiting loops happen on this thread. the thread supports several
priority levels. dispatching to a level with a lower number is executed sooner then dispatching to higher number layers; also any loop on lower levels yields to higher levels so that scheduled deletion of 1000 files will not block opening cache entries. ...
...And 4 more matches
Introduction to NSPR
implies that a system thread should not have volatile data that needs to be safely stored away. priorities for nspr threads are based loosely on hints provided by the client and sometimes constrained by the underlying operating system. therefore, priorities are not rigidly defined. for more information, see thread scheduling. in general, it's preferable to create local user threads with normal
priority and let nspr take care of the details as appropriate for each host os. it's usually not necessary to create a global thread explicitly unless you are planning to port your code only to platforms that provide threading services with which you are familiar or unless the thread will be executing code that might directly call blocking os functions. threads can also have "per-thread-data" attached to...
...ode that might directly call blocking os functions. threads can also have "per-thread-data" attached to them. each thread has a built-in per-thread error number and error string that are updated when nspr operations fail. it's also possible for nspr clients to define their own per-thread-data. for details, see controlling per-thread private data. thread scheduling nspr threads are scheduled by
priority and can be preempted or interrupted. the sections that follow briefly introduce the nspr approach to these three aspects of thread scheduling. setting thread priorities preempting threads interrupting threads for reference information on the nspr api used for thread scheduling, see threads. setting thread priorities the host operating systems supported by nspr differ widely in the mechan...
...the nspr approach to these three aspects of thread scheduling. setting thread priorities preempting threads interrupting threads for reference information on the nspr api used for thread scheduling, see threads. setting thread priorities the host operating systems supported by nspr differ widely in the mechanisms they use to support thread priorities. ...
...And 4 more matches
Index - Web APIs
text property of the cssstyledeclaration interface returns or sets the text of the element's inline style declaration only. 457 cssstyledeclaration.getpropertycssvalue() api, cssom, method, obsolete, reference the cssstyledeclaration.getpropertycssvalue() method interface returns a cssvalue containing the css value for a property. 458 cssstyledeclaration.getproperty
priority() api, cssom, method, reference the cssstyledeclaration.getproperty
priority() method interface returns a domstring that provides all explicitly set priorities on the css property. 459 cssstyledeclaration.getpropertyvalue() api, cssom, method, reference the cssstyledeclaration.getpropertyvalue() method interface returns a domstring containing the value of a specified...
...ce which is the source of the candidate. 3267 rtcicecandidate.port api, candidate, ice, networking, property, rtcicecandidate, read-only, reference, sdp, webrtc, webrtc api, port the rtcicecandidate interface's read-only port property contains the port number on the device at the address given by ip at which the candidate's peer can be reached. 3268 rtcicecandidate.
priority api, candidate, ice, property, rtcicecandidate, read-only, reference, sdp, webrtc, webrtc api,
priority the rtcicecandidate interface's read-only
priority property specifies the candidate's
priority according to the remote peer; the higher this value is, the better the remote peer considers the candidate to be. 3269 rtcicecandidate.protocol api, ice, property, protocol, r...
...vide insight into the quality and performance of an rtcpeerconnection while connected and configured as described by the specified pair of ice candidates. 3286 rtcicecandidatepairstats.availableincomingbitrate api, bandwidth, bit rate, bitrate, candidate, connection, network, pair, rtcicecandidatepairstats, reference, statistics, stats, webrtc, webrtc api, availableincomingbitrate,
priority, speed the rtcicecandidatepairstats property availableincomingbitrate returns a value indicative of the available inbound capacity of the network connection represented by the candidate pair. 3287 rtcicecandidatepairstats.availableoutgoingbitrate api, bandwidth, bit rate, bitrate, candidate, connection, ice, network, pair, property, rtcicecandidatepairstats, reference, statis...
...And 4 more matches
Example Sticky Notes - Archive of obsolete content
in this context refers to the bound element. */ // your code goes here ]]></constructor> <destructor><![cdata[ /** * the code below will be called one time only before * binding is unbound. you cannot cancel this event, * but you may accomplish some last minute clean up. * "this" in this context refers to the bound element. */ // your code goes here ]]></destructor> <field name="
priority"><![cdata[ /** * new "real" property for the bound element. * within this block the content is interpreted * as javascript code. the result of this code * evaluation (if any) will be used as initial value. */ "normal"; ]]></field> <property name="innertext"> <!-- new "virtual" property for the bound element. unlike <field> these are really two functions (getter and setter). within t...
...rameter name="argumentname"/> --> <parameter name="arg"/> <body><![cdata[ this.style.border = arg; ]]></body> </method> </implementation> <handlers> <!-- event handlers. mouse events sent to bindings are refactored, so event.target / event.relatedtarget always points to the bound element, even if it was originated to/from a child. ...
...-> <parameter name="arg"/> <body><![cdata[ this.style.border = arg; ]]></body> </method> </implementation> <handlers> <!-- event handlers. mouse events sent to bindings are refactored, so event.target / event.relatedtarget always points to the bound element, even if it was originated to/from a child. ...
...And 3 more matches
notificationbox - Archive of obsolete content
label - label to appear on the notification. this should be either a string, or, from gecko 37 onwards, you can pass a documentfragment with rich content as well. keep in mind that this is a...
... label - label to appear on the notification. ...
.... this should be either a string, or, from gecko 37 onwards, you can pass a documentfragment with rich content as well. keep in mind that this is all xul so using html elements for styling might still need additional css in order to work as you might expect. value - value used to identify the notification image - url of image to appear on the notification. ...
...And 3 more matches
nsIMsgFilter
throws an exception if the action is not move to folder attribute acstring targetfolderuri; label // target label. ...
...throws an exception if the action is not move to folder attribute acstring targetfolderuri; label // target label. ...
...throws an exception if the action is not move to folder attribute acstring targetfolderuri; label // target label. ...
...And 2 more matches
PR_AttachThread
stack the stack for the thread being attached. returns the function returns one of these values: if successful, a pointer to a prthread object. ...
... stack the stack for the thread being attached. returns the function returns one of these values: if successful, a pointer to a prthread object. ...
... stack the stack for the thread being attached. returns the function returns one of these values: if successful, a pointer to a prthread object. ...
... stack the stack for the thread being attached. returns the function returns one of these values: if successful, a pointer to a prthread object. ...
nsIMsgRuleAction
throws an exception if the action is not move to folder attribute acstring targetfolderuri; // target label. ...
...throws an exception if the action is not move to folder attribute acstring targetfolderuri; // target label. ...
...throws an exception if the action is not move to folder attribute acstring targetfolderuri; // target label. ...
...throws an exception if the action is not move to folder attribute acstring targetfolderuri; // target label. ...
CSSStyleDeclaration.setProperty() - Web APIs
if not specified, treated as the empty string. ...
...if not specified, treated as the empty string. ...
...ation object. syntax style.setproperty(propertyname, value,
priority); parameters propertyname is a domstring representing the css property name (hyphen case) to be modified. value optional is a domstring containing the new property value. if not specified, treated as the empty string. note: value must not contain "!important" -- that should be set using the
priority parameter.
priority optional is a domstring allowing the "important" css
priority to be set. if not specified, treated as the empty string. ...
...ter.
priority optional is a domstring allowing the "important" css
priority to be set. if not specified, treated as the empty string. the following values are accepted: string value "important" keyword undefined string empty value "" return value undefined exceptions domexception (nomodificationallowederror): if the property or declaration block is read only. if
priority can be omitted, javascript has a special simpler syntax for setting a css property on a style declaration object: style.csspropertyname = 'value'; examples in this example we have three buttons, which can be pressed to dynamically alter our box paragraph's border, background color, and text color to random values (see the live example at the end of this section). we know that the rule we want...
Alerts and Notifications - Archive of obsolete content
to use only buttons and a label there. ...
...tons and a label there. ...
...ked'); if (notification) { notification.label = message; } else { var buttons = [{ label: 'button', accesskey: 'b', popup: 'blockedpopupoptions', callback: null }]; let
priority = box.
priority_warning_medium; box.appendnotification(message, 'popup-blocked', 'chrome://browser/skin/info.png',
priority, buttons); } ...
Index - Archive of obsolete content
plug-n-hack tools supported security, plugnhack 605 plugin architecture add-ons, developing mozilla, needstechnicalreview, needsupdate, plugins this page contains some notes on how plugins work internally in gecko. it is mainly of interest to gecko developers. 606 porting nspr to unix platforms nspr last modified 16 july 1998 607
priority content update: i've removed documents from this list that have been migrated into the wiki. the list of completed documents is available through the devedge page. 608 prism prism prism is a simple xulrunner-based browser that hosts web applications without the normal web browser user interface. prism is based on a concept called site-specific browsers (ssb). an ss...
... 1025 prefpane.selected xul attributes, xul reference no summary! 1026 prefpane.src xul attributes, xul reference no summary! 1027 prefwindow.onload no summary! 1028 prefwindow.type xul attributes, xul reference no summary! 1029 primary xul attributes, xul reference no summary! 1030
priority xul attributes, xul reference no summary! 1031 progressmeter.max no summary! 1032 progressmeter.mode xul attributes, xul reference no summary! 1033 progressmeter.value xul attributes, xul reference no summary! 1034 properties xul attributes, xul reference no summary! 1035 query.name xul a...
...properties, xul reference no summary! 1528 preferenceelements xul properties, xul reference no summary! 1529 preferencepanes xul properties, xul reference no summary! 1530 preferences xul properties, xul reference no summary! 1531 prefpane.preferences xul properties, xul reference no summary! 1532
priority xul properties, xul reference no summary! 1533 radio.control xul properties, xul reference no summary! 1534 radiogroup xul properties, xul reference no summary! 1535 readonly xul properties, xul reference no summary! 1536 ref xul properties, xul reference no summary! 1537 resource xul prop...
notification - Archive of obsolete content
« xul reference home [ examples | attributes | properties | methods | related ] the notification is used to display an informative message. it will normally be used as part of a notificationbox. the box includes a button which the user can use to close the box. attributes image, label,
priority, persistence, type, value properties accessibletype, control, image, label,
priority, persistence, type, value methods close examples <notification label="this is a warning"/> attributes image type: uri the uri of the image to appear on the element. if this attribute is empty or left out, no image appears. the position of the image is determined by the dir and orient attributes. label type: string the label that will appear on the element. if th...
...enuitem element the value of this attribute is copied to the menulist.value property upon user selection of the menuitem. persistence type: integer the persistence may be set to a non-zero value so that the notificationbox's removetransientnotifications method does not remove them. this may be used to close a set of notifications as a group without affecting other notifications.
priority type: integer numeric value that specifies the order in which the notifications appear. should be one of the constants described in the notificationbox's appendnotification method. type type: one of the values below indicates the type of notification, determined from the
priority. info a notification that is of lesser importance. warning a normal warning notification. cri...
... accessibletype type: integer a value indicating the type of accessibility object for the element. image type: image url gets and sets the value of the image attribute. label type: string gets and sets the value of the label attribute. persistence type: integer gets and sets the value of the persistence attribute.
priority type: string gets and sets the value of the
priority attribute. type type: string gets and sets the value of the type attribute. value type: string gets and sets the value of the value attribute. for textbox and user editable menulist elements, the contents, as visible to the user, are read and set using the textbox.value and menulist.value syntax. me...
Index
no summary! 980 tostring no summary! 981 nsisupportsprimitive interfaces, interfaces:scriptable, xpcom, xpcom api reference, xpcom interface reference this interface was frozen for gecko 1.2. see bug 166426 for details. from gecko 2.0 interfaces are no longer frozen. ...
...nterface reference this interface was frozen for gecko 1.2. see bug 166426 for details. from gecko 2.0 interfaces are no longer frozen. 982 type xpcom api reference no summary! 983 nsisupports
priority interfaces, interfaces:scriptable, xpcom, xpcom api reference, xpcom interface reference this interface does not strictly define what happens when the
priority of an object is changed. an implementation of this interface is free to define the side-effects of changing the
priority of an object. in some cases, changing the
priority of an object may be disallowed (resulting in an exception being thrown) or may simply be ignored. 984 nsisupportsstring interfaces, interfaces:scriptable, xpcom, xpcom api reference, xpcom interface reference ...
... defined in comm-central/ mailnews/ base/ public/ mailnewstypes2.idl 1126 nsmsgkey xpcom, xpcom interface reference, thunderbird defined in comm-central/ mailnews/ base/ public/ mailnewstypes2.idl 1127 nsmsglabelvalue xpcom, xpcom interface reference, thunderbird defined in comm-central/ mailnews/ base/ public/ mailnewstypes2.idl 1128 nsmsg
priorityvalue xpcom, xpcom interface reference, thunderbird defined in comm-central/ mailnews/ base/ public/ mailnewstypes2.idl 1129 nsmsgruleactiontype interfaces, interfaces:scriptable, xpcom, xpcom interface reference, thunderbird defined in comm-central/ mailnews/ base/ search/ public/ nsmsgfiltercore.idl 1130 nsmsgsearchattrib interfaces, interfaces:scr...
nsIInstallLocation
t links to the directories they refer to. read only. location nsifile the file system location where items live. items can be dropped in at this location. can be null for install locations that don't have a file system presence. note: this is a clone of the actual location which the caller can modify freely. read only. name astring the string identifier of this install location. read only. ...
...ectories they refer to. read only. location nsifile the file system location where items live. items can be dropped in at this location. can be null for install locations that don't have a file system presence. note: this is a clone of the actual location which the caller can modify freely. read only. name astring the string identifier of this install location. read only.
priority long the
priority level of this install location in loading. read only. restricted boolean whether or not this install location is on an area of the file system that could be restricted on a restricted-access account, regardless of whether or not the location is restricted with the current user privileges. read only. constants constants representing
priority of some default install locations. you should not u...
...ricted with the current user privileges. read only. constants constants representing
priority of some default install locations. you should not use the exact values here, you should offset from these values each time you create a new install location. offsetting can be brittle but you should know what install locations are being defined for your own application. constant value description
priority_app_profile 0
priority_app_system_user 10
priority_xre_system_user 100
priority_app_system_global 1000
priority_xre_system_global 10000 methods getidforlocation() retrieves the guid for an item at the specified location. note: this function makes no promises about whether or not this path is actually maintained by this install location. astring getidforlocation( in nsifile ...
nsIMsgDBHdr
tring propertyvalue); string getstringproperty(in string propertyname); unsigned long getuint32property(in string propertyname); void setuint32property(in string propertyname, in unsigned long propertyval); void markread(in boolean read); void markflagged(in boolean flagged); void markhasattachments(in boolean hasattachments); void set
prioritystring(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 str...
...hether or not the message is starred in the ui. iskilled boolean readonly: indicates whether or not this message belongs to a subthread that has been ignored in the ui. if you want to know whether the message is the root of an ignored subthread then you should check for the ignored flag. any children of the ignored message will be marked as read when added to the database.
priority nsmsg
priorityvalue indicates the
priority of this message. flags unsigned long indicates the flags of the message. see nsmsgmessageflags for a list of what may or may not be set on this message. note that the elided flag should not be set on messages, as it is a flag strictly dealing with the database view. threadid nsmsgkey indicates the id of the thread to wh...
... read); parameters read if true, mark as read. if false mark as undread. markflagged() void markflagged(in boolean flagged); parameters flagged if true, mark as flagged. if false remove flag. markhasattachments() void markhasattachments(in boolean hasattachments); parameters hasattachments if true, mark as having attachments. if false mark as not having attachments. set
prioritystring() void set
prioritystring(in string
priority); parameters
priority string describing the
priority. orflags() unsigned long orflags(in unsigned long flags); parameters flags flags to be added to the current message flags. andflags() unsigned long andflags(in unsigned long flags); parameters flags flags to be retained on the current message flags. all other flags ar...
RTCIceCandidate.candidate - Web APIs
f-candidates" marker. the syntax of the candidate string is described in rfc 5245, section 15.1. for an a-line (attribute line) that looks like this: a=candidate:4234997325 1 udp 2043278322 192.168.0.56 44323 typ host the corresponding candidate string's value will be "candidate:4234997325 1 udp 2043278322 192.168.0.56 44323 typ host". ...
...is described in rfc 5245, section 15.1. for an a-line (attribute line) that looks like this: a=candidate:4234997325 1 udp 2043278322 192.168.0.56 44323 typ host the corresponding candidate string's value will be "candidate:4234997325 1 udp 2043278322 192.168.0.56 44323 typ host". the user agent always prefers candidates with the highest
priority, all else being equal. in the example above, the
priority is 2043278322. ...
...ays prefers candidates with the highest
priority, all else being equal. in the example above, the
priority is 2043278322. the attributes are all separated by a single space character, and are in a specific order. the complete list of attributes for this example candidate is: foundation = 4234997325 component = "rtp" (the number 1 is encoded to this string; 2 becomes "rtcp") protocol = "udp"
priority = 2043278322 ip = "192.168.0.56" port = 44323 type = "host" example in this example, we see a function which receives as input an sdp string containing an ice candidate received from the remote peer during the signaling process. function handlenewicecandidate(candidatesdp) { var candidateobj = new rtcicecandidate(candidatesdp); mypeerconnection.addicecandidate(candidateobj).catch({ ...
RTCIceCandidateInit.candidate - Web APIs
f-candidates" marker. the syntax of the candidate string is described in rfc 5245, section 15.1. for an a-line (attribute line) that looks like this: a=candidate:4234997325 1 udp 2043278322 192.168.0.56 44323 typ host the corresponding candidate string's value will be "candidate:4234997325 1 udp 2043278322 192.168.0.56 44323 typ host". ...
...is described in rfc 5245, section 15.1. for an a-line (attribute line) that looks like this: a=candidate:4234997325 1 udp 2043278322 192.168.0.56 44323 typ host the corresponding candidate string's value will be "candidate:4234997325 1 udp 2043278322 192.168.0.56 44323 typ host". the user agent always prefers candidates with the highest
priority, all else being equal. in the example above, the
priority is 2043278322. ...
...this is done in the event handler for the icecandidate event. ...
HTTP Index - HTTP
it was designed for communication between web browsers and web servers, but it can also be used for other purposes. ...
...p/ip layer, it can be used on any reliable transport layer, that is, a protocol that doesn't lose messages silently like udp does. rudp — the reliable update of udp — is a suitable alternative. 2 a typical http session http in client-server protocols, like http, sessions consist of three phases: 3 an overview of http html, http, overview, webmechanics, l10n:
priority http isthe foundation of any data exchange on the web and it is a client-server protocol, which means requests are initiated by the recipient, usually the web browser. a complete document is reconstructed from the different sub-documents fetched, for instance text, layout description, images, videos, scripts, and more 4 basics of http guide, http, overview http is a pre...
...nnel attacks as well as cross-site script inclusion attacks. cross-origin resource policy complements cross-origin read blocking (corb), which is a mechanism to prevent some cross-origin reads by default. 20 cross-origin resource sharing (cors) ajax, cors, cross-origin resource sharing, fetch, fetch api, http, http access controls, same-origin policy, security, xmlhttprequest, l10n:
priority cross-origin resource sharing (cors) is a mechanism that uses additional http headers to tell browsers to give a web application running at one origin, access to selected resources from a different origin. 21 cors errors cors, errors, http, https, messages, same-origin, security, console, troubleshooting cross-origin resource sharing (cors) is a standard that allows a s...
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. 3 compatibility sources svg the following sources are used for the compatibility tables on svg elements and attributes: 4 content type needstechnicalreview, svg, types, data types svg makes use of a numbe...
...bute the xlink:href attribute defines a reference to a resource as a reference iri. the exact meaning of that link depends on the context of each element using it. 258 xlink:show deprecated, svg, svg attribute the xlink:show attribute indicates how a linked resource should be opened and is meant for xlink-aware processors. in case of a conflict, the target attribute has
priority, since it can express a wider range of values. 259 xlink:title deprecated, svg, svg attribute the xlink:title attribute is used to describe the meaning of a link or resource in a human-readable fashion. 260 xlink:type deprecated, svg, svg attribute the xlink:type attribute identifies the type of xlink being used. in svg, only simple links are available. ...
...language (smil). smil allows you to: 291 svg as an image images, needscontent, svg svg images can be used as an image format, in a number of contexts. many browsers support svg images in: 292 svg documentation index svg found 383 pages: 293 svg element reference drawing, elements, responsive design, svg, svg reference, vector graphics, l10n:
priority 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. 294 <a> element, reference, svg, svg container the <a> svg element creates a hyperlink to other web pages, files, locations in the same page, ...
Developing New Mozilla Features - Archive of obsolete content
ou absolutely don't have the resources to do this, then plan for extra integration time. work hard to have a developer involved in the core code who is connected to what you are doing if you can’t make this happen, let mozilla.org staff know and we will try to facilitate this. it’s possible developers may not pay much attention to you because they believe your proposed feature is not a high
priority, or is not wanted at all, or that you haven’t demonstrated that you understand the codebase and mozilla coding practices well enough for them to spend a lot of time with you. in some cases the developers may be in error and staff will work to make this clear and get you connected. in other cases, mozilla.org staff may agree with the developers that it does not make sense for them to spend much ...
...job. and since few of us are perfect, chances are that revisions will be requested. if you’ve got a large patch, let the likely reviewers know when they might expect to see it if your timeframe is tight, check out the mozilla roadmap for milestone dates and see if your feature will arrive at a time of furious activity. if so, and if your feature is not of general interest, prepare to be a low
priority for a while. get connected with mozilla.org staff mitchell@mozilla.org is a good contact for project management discussions. let us know what you’re doing. if you can find the resources, designate someone on your team as the liaison to mozilla.org for project management issues. review and super-review take time improving the code as requested by the reviewers takes time. poor quality code a...
Index - Archive of obsolete content
mary! 294 prefpane.selected xul attributes, xul reference no summary! 295 prefpane.src xul attributes, xul reference no summary! 296 prefwindow.onload no summary! 297 prefwindow.type xul attributes, xul reference no summary! 298 primary xul attributes, xul reference no summary! 299
priority xul attributes, xul reference no summary! 300 progressmeter.max no summary! 301 progressmeter.mode xul attributes, xul reference no summary! 302 progressmeter.value xul attributes, xul reference no summary! 303 properties xul attributes, xul reference no summary! 304 query.name xul attrib...
... xul properties, xul reference no summary! 797 preferenceelements xul properties, xul reference no summary! 798 preferencepanes xul properties, xul reference no summary! 799 preferences xul properties, xul reference no summary! 800 prefpane.preferences xul properties, xul reference no summary! 801
priority xul properties, xul reference no summary! 802 radio.control xul properties, xul reference no summary! 803 radiogroup xul properties, xul reference no summary! 804 readonly xul properties, xul reference no summary! 805 ref xul properties, xul reference no summary! 806 resource xul propertie...
Quality values - MDN Web Docs Glossary: Definitions of Web-related terms
quality values, or q-values and q-factors, are used to describe the order of
priority of values in a comma-separated list. it is a special syntax allowed in some http headers and in html. the importance of a value is marked by the suffix ';q=' immediately followed by a value between 0 and 1 included, with up to three decimal digits, the highest value denoting the highest
priority. when not present, the default value is 1. examples the following syntax text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 indicates the order of
priority: value
priority text/html and application/xhtml+xml 1.0 application/xml 0.9 */* 0.8 if there is no
priority defined for the first two values, the order in the list is irrelevant. never...
... text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 indicates the order of
priority: value
priority text/html and application/xhtml+xml 1.0 application/xml 0.9 */* 0.8 if there is no
priority defined for the first two values, the order in the list is irrelevant. nevertheless, with the same quality, more specific values have
priority over less specific ones: text/html;q=0.8,text/*;q=0.8,*/*;q=0.8 value
priority text/html 0.8 (but totally specified) text/* 0.8 (partially specified) */* 0.8 (not specified) some syntax, like the one of accept, allow additional specifiers like text/html;level=1. these increase the specificity of the value. their use is extremely rare. bro...
WCAG - MDN Web Docs Glossary: Definitions of Web-related terms
e primarily for people with disabilities but also for limited-resource devices such as mobile phones. wcag 2.0 which superseded wcag 1.0 was published as a w3c recommendation on 11 december 2008. it consists of 12 guidelines organized under 4 principles (perceivable, operable, understandable, and robust) and each guideline has testable success criteria. ...
...er 2008. it consists of 12 guidelines organized under 4 principles (perceivable, operable, understandable, and robust) and each guideline has testable success criteria. wcag uses three levels of conformance:
priority 1: web developers must satisfy these requirements, otherwise it will be impossible for one or more groups to access the web content. conformance to this level is described as a.
priority 2: web developers should satisfy these requirements, otherwise some groups will find it difficult to access the web content. conformance to this level is described as aa or double-a.
priority 3: web developers may satisfy these requirements, in order to make it easier for some groups to access the web content. conformance to this level is described as aaa or triple-a. learn more general knowl...
Multimedia: Images - Learn web development
resting effects to keep in mind regarding high dpi screens is that: with high dpi screen, humans will spot compression artifacts a lot later, meaning that for images meant for these screens you can crank up compression beyond usual. only a very few people can spot an increase in resolution beyond 2× dpi, which means you don't need to serve images resolving higher than 2×. ...
...olling the
priority (and ordering) of downloading images getting the most important images in front of visitors sooner than the less important can deliver improved perceived performance. the first thing to check is that your content images use <img> elements and your background images are defined in css with background-image — images referenced in <img> elements are assigned a higher loading
priority than background images. secondly, with the adoption of
priority hints, you can control the
priority further by adding an importance attribute to your image tags. an example use case for
priority hints on images are carousels where the first image is a higher
priority than the subsequent images. rendering strategy as images are loaded asynchronously and continue to load after the first paint, i...
Accessibility/LiveRegionDevGuide
liveregions and gecko python modules in orca for a real world example. for more information about live regions, please read the aria properties spec or the live region report to learn about aria live region markup and the live region api support document for the latest firefox api with regards to live regions. as always, we're open to questions and suggestions for changes in community forums.
priority queue the heart of any live region support module is the
priority queue. it is responsible for queuing messages derived from live region events, where
priority is determined by chronological order and the live politeness properties. in addition to the standard
priority queue methods, additional methods will need to be implemented that purge the queue based on one of the
priority criterion. the ...
...ot a live region. live properties this table describe the object attributes associated with a live region event. the following are guidelines on how to implement each container-live this property determines the interruption policy or politeness level for the event and can have values of "off", "polite", "assertive" and "rude". this property, along with an event's time stamp, determine the
priority of a message within the
priority queue. the following describes actions that should be taken for an event with the given politeness level: off: no action should be taken. the event should be filtered out as early as possible to prevent performance degradation. polite: a message should be derived from the event and added to the queue. assertive: the queue should be purged of 'polite' messages ...
PR_Init
initializes the runtime. syntax #include <prinit.h> void pr_init( prthreadtype type, prthread
priority priority, pruintn maxptds); parameters pr_init has the following parameters: type this parameter is ignored.
priority this parameter is ignored. maxptds this parameter is ignored. description nspr is now implicitly initialized, usually by the first nspr function called by a program. ...
...init has the following parameters: type this parameter is ignored.
priority this parameter is ignored. maxptds this parameter is ignored. description nspr is now implicitly initialized, usually by the first nspr function called by a program. pr_init is necessary only if a program has specific initialization-sequencing requirements. ...
Threads
both the resources to which the thread has access and the resources of the thread itself. for an overview of the nspr threading model and sample code that illustrates its use, see introduction to nspr. for api reference information related to thread synchronization, see locks and condition variables. threading types and constants prthread prthreadtype prthreadscope prthreadstate prthread
priority prthreadprivatedtor threading functions most of the functions described here accept a pointer to the thread as an argument. nspr does not check for the validity of the thread. it is the caller's responsibility to ensure that the thread is valid. the effects of these functions on invalid threads are undefined. creating, joining, and identifying threads controlling thread priorities interr...
...erminates. pr_getcurrentthread returns the current thread object for the currently running code. pr_attachthread associates a prthread object with an existing native thread. pr_detachthread disassociates a prthread object from a native thread. controlling thread priorities for an overview of the way nspr controls thread priorities, see setting thread priorities. you set a thread's nspr
priority when you create it with pr_createthread. after a thread has been created, you can get and set its
priority with these functions: pr_getthread
priority pr_setthread
priority controlling per-thread private data you can use these functions to associate private data with each of the threads in a process: pr_newthreadprivateindex allocates a unique index. if the call is successful, every threa...
nsIDocShell
vel document. adocshell if the load was succesfully initiated, this receives the nsidocshell that actually performed the load. arequest the new channel created for the load. isbeingdestroyed() boolean isbeingdestroyed(); parameters none. return value returns true if the docshell is being destroyed, false otherwise. native code only!loadstream loads a given stream. this will give
priority to loading the requested stream in the object implementing this interface. if it can not be loaded here however, the url dispatched will go through its normal process of content loading. void loadstream( in nsiinputstream astream, in nsiuri auri, in acstring acontenttype, in acstring acontentcharset, in nsidocshellloadinfo aloadinfo ); parameters astream the input stream that ...
...ta being loaded (empty if unknown). aloadinfo this is the extended load info for this load. this most often will be null, but if you need to do additional setup for this load you can get a loadinfo object by calling createloadinfo(). once you have this object you can set the needed properties on it and then pass it to loadstream. native code only!loaduri loads a given uri. this will give
priority to loading the requested uri in the object implementing this interface. if it can not be loaded here however, the url dispatcher will go through its normal process of content loading. void loaduri( in nsiuri uri, in nsidocshellloadinfo loadinfo, in unsigned long aloadflags, in boolean firstparty ); parameters uri the uri to load. loadinfo this is the extended load info f...
nsIJumpListBuilder
of build calls, make sure to check for errors on each individual step. the default number of allowed items in a jump list is ten. users can change the number through system preferences. user may also pin items to jump lists, which take up additional slots. applications do not have control over the number of items allowed in jump lists; excess items added are dropped by the system. item insertion
priority is defined as first to last added. users may remove items from jump lists after they are committed. the system tracks removed items between commits. a list of these items is returned by a call to initlistbuild(). nsijumplistbuilder does not filter entries added that have been removed since the last commit. to prevent repeatedly adding entires users have removed, applications are encouraged to tra...
...ort. read only. constants constant value description jumplist_category_tasks 0 tasks are common actions performed by users within the application. a task can be represented by an application shortcut and associated command line parameters or a uri. task lists should generally be static lists that do not change often, if at all - similar to an application menu. tasks are given the highest
priority of all lists when space is limited. jumplist_category_recent 1 recent lists are based on window's recent document lists. the lists are generated automatically by windows. applications that use recent or frequent lists should keep document use tracking up to date by calling the shaddtorecentdocs shell api. jumplist_category_frequent 2 frequent lists are based on window's recent document lists.
nsIMsgSearchValue
c/ nsimsgsearchvalue.idl #include "nsmsgsearchcore.idl" interface nsimsgfolder; [scriptable, uuid(783758a0-cdb5-11dc-95ff-0800200c9a66)] interface nsimsgsearchvalue : nsisupports { // type of object attribute nsmsgsearchattribvalue attrib; // accessing these will throw an exception if the above // attribute does not match the type! ...
...hvalue.idl #include "nsmsgsearchcore.idl" interface nsimsgfolder; [scriptable, uuid(783758a0-cdb5-11dc-95ff-0800200c9a66)] interface nsimsgsearchvalue : nsisupports { // type of object attribute nsmsgsearchattribvalue attrib; // accessing these will throw an exception if the above // attribute does not match the type! ...
XPCOM Interface Reference
meratornsistructuredclonecontainernsistylesheetservicensisupportsnsisupports proxiesnsisupportsarraynsisupportscstringnsisupportscharnsisupportsdoublensisupportsfloatnsisupportsidnsisupportsinterfacepointernsisupportsprboolnsisupportsprint16nsisupportsprint32nsisupportsprint64nsisupportsprtimensisupportspruint8nsisupportspruint16nsisupportspruint32nsisupportspruint64nsisupportsprimitivensisupports
prioritynsisupportsstringnsisupportsvoidnsisupportsweakreferencensisyncjpakensisyncmessagesendernsitxttohtmlconvnsitaggingservicensitaskbarpreviewnsitaskbarpreviewbuttonnsitaskbarpreviewcontrollernsitaskbarprogressnsitaskbartabpreviewnsitaskbarwindowpreviewnsitelemetrynsitextinputprocessornsitextinputprocessorcallbacknsitextinputprocessornotificationnsithreadnsithreadeventfilternsithreadinternalnsithreadm...
...sixpconnectnsixsltexceptionnsixsltprocessornsixsltprocessorobsoletensixulappinfonsixulbrowserwindownsixulbuilderlistenernsixulruntimensixulsortservicensixultemplatebuildernsixultemplatequeryprocessornsixultemplateresultnsixulwindownsixmlrpcclientnsixmlrpcfaultnsizipentrynsizipreadernsizipreadercachensizipwriternsmsgfilterfileattribvaluensmsgfolderflagtypensmsgjunkstatusnsmsgkeynsmsglabelvaluensmsg
priorityvaluensmsgruleactiontypensmsgsearchattribnsmsgsearchopnsmsgsearchscopensmsgsearchtermnsmsgsearchtypevaluensmsgsearchvaluensmsgsearchwidgetvaluenspipromptservice see also interfaces grouped by function ...
nsIMsgSearchValue
c/ nsimsgsearchvalue.idl #include "nsmsgsearchcore.idl" interface nsimsgfolder; [scriptable, uuid(783758a0-cdb5-11dc-95ff-0800200c9a66)] interface nsimsgsearchvalue : nsisupports { // type of object attribute nsmsgsearchattribvalue attrib; // accessing these will throw an exception if the above // attribute does not match the type! ...
...hvalue.idl #include "nsmsgsearchcore.idl" interface nsimsgfolder; [scriptable, uuid(783758a0-cdb5-11dc-95ff-0800200c9a66)] interface nsimsgsearchvalue : nsisupports { // type of object attribute nsmsgsearchattribvalue attrib; // accessing these will throw an exception if the above // attribute does not match the type! ...
Using COM from js-ctypes
tsource */ /* start ispvoice */ void* setoutput; void* getoutputobjecttoken; void* getoutputstream; void* pause; void* resume; void* setvoice; void* getvoice; hresult (__stdcall *speak)(struct myispvoice*, lpcwstr pwcs, dword dwflags, ulong* pulstreamnumber); void* speakstream; void* getstatus; void* skip; void* set
priority; void* get
priority; void* setalertboundary; void* getalertboundary; void* setrate; void* getrate; void* setvolume; void* getvolume; void* waituntildone; void* setsyncspeaktimeout; void* getsyncspeaktimeout; void* speakcompleteevent; void* isuisupported; void* displayui; /* end ispvoice */ }; int main(void) { if (succeeded(coinitialize(n...
...r_t }, { 'speak': ctypes.functiontype(callback_abi, hresult, // return [ ispvoice.ptr, lpcwstr, // *pwcs dword, // dwflags ulong // *pulstreamnumber ]).ptr }, { 'speakstream': ctypes.voidptr_t }, { 'getstatus': ctypes.voidptr_t }, { 'skip': ctypes.voidptr_t }, { 'set
priority': ctypes.voidptr_t }, { 'get
priority': ctypes.voidptr_t }, { 'setalertboundary': ctypes.voidptr_t }, { 'getalertboundary': ctypes.voidptr_t }, { 'setrate': ctypes.voidptr_t }, { 'getrate': ctypes.voidptr_t }, { 'setvolume': ctypes.voidptr_t }, { 'getvolume': ctypes.voidptr_t }, { 'waituntildone': ctypes.voidptr_t }, { 'setsyncspeaktimeout': ctypes.voidptr_t }, ...
Background Tasks API - Web APIs
ience much better. getting the most out of idle callbacks because idle callbacks are intended to give your code a way to cooperate with the event loop to ensure that the system is utilized to its full potential without over-tasking it, resulting in lag or other performance problems, you should be thoughtful about how you go about using them. use idle callbacks for tasks which don't have high
priority. because you don't know how many callbacks have been established, and you don't know how busy the user's system is, you don't know how often your callback will be run (unless you specify a timeout. there's no guarantee that every pass through the event loop (or even every screen update cycle) will include any idle callbacks being executed; if the event loop uses all available time, you're out of ...
...o provide an estimate of how long the idle period is expected to last, as well as whether or not the callback is running because its timeout period has expired. the window interface is also augmented by this api to offer the new requestidlecallback() and cancelidlecallback() methods. example in this example, we'll take a look at how you can use requestidlecallback() to run time-consuming, low-
priority tasks during time the browser would otherwise be idle. in addition, this example demonstrates how to schedule updates to the document content using requestanimationframe(). below you'll find only the html and javascript for this example. the css is not shown, since it's not particularly crucial to understanding this functionality. html content in order to be oriented about what we're trying to...
RTCIceCandidatePairStats - Web APIs
s pair. localcandidateid optional the unique id string corresponding to the rtcicecandidate from the data included in the rtcicecandidatestats object providing statistics for the candidate pair's local candidate. nominated optional a boolean value which, if true, indicates that the candidate pair described by this object is one which has been proposed for use, and will be (or was) used if its
priority is the highest among the nominated candidate pairs. see rfc 5245, section 7.1.3.2.4 for details. packetsreceived optional the total number of packets received on this candidate pair. packetssent optional the total number of packets sent on this candidate pair. remotecandidateid optional the unique id string corresponding to the remote candidate from which data was taken to construct the rtc...
...ain the transport-related statistics (as found in rtctransportstats) used in generating this object. obsolete properties the following properties have been removed from the specification and should no longer be used. you should update any existing code to avoid using them as soon as is practical. check the compatibility table for details on which browsers support them and in which versions.
priority optional an integer value indicating the candidate pair's
priority. readable optional a boolean value indicating whether or not data can be sent over the connection described by the candidate pair. writable optional a boolean value indicating whether or not data can be received on the connection described by the candidate pair. non-standard properties selected optional a firefo...
ARIA: figure role - Accessibility
cessibility of html by adding these roles and properties with javascript. ...
...tml but are able to improve accessibility dynamically after the fact with javascript. if at all possible, you should use the appropriate semantic html elements to mark up a figure and its caption — <figure> and <figcaption>. for example, our above example should be rewritten as follows: <figure> <img src="diagram.png" alt="diagram showing the four layers of awesome and their relative
priority order — music, cats, nature, and ice cream"> <pre><code> let awesome = ['music', 'cats', 'nature', 'ice cream']; </code></pre> <figcaption>figure 1: the four layers of awesome.</figcaption> </figure> specifications specification status accessible rich internet applications (wai-aria) 1.1the definition of 'figure' in that specification. recommendation ...
border-style - CSS: Cascading Style Sheets
values <line-style> describes the style of the border. it can have the following values: none like the hidden keyword, displays no border. unless a background-image is set, the computed value of the same side's border-width will be 0, even if the specified value is something else. ...
... dotted displays a series of rounded dots. the spacing of the dots is not defined by the specification and is implementation-specific. the radius of the dots is half the computed value of the same side's border-width. ...
HTML attribute: rel - HTML: Hypertext Markup Language
specifies that the user agent should preemptively fetch and cache the target resource as it is likely to be required for a followup navigation. external resource not allowed not allowed preload specifies that the user agent must preemptively fetch and cache the target resource for current navigation according to the potential destination given by the as attribute (and the
priority associated with the corresponding destination). external resource not allowed not allowed prerender specifies that the user agent should preemptively fetch the target resource and process it in a way that helps deliver a faster response in the future. external resource not allowed not allowed prev indicates that the current document is a part of a series,...
...preemptively connect to the target resource's origin. prefetch specifies that the user agent should preemptively fetch and cache the target resource as it is likely to be required for a followup navigation. preload specifies that the user agent must preemptively fetch and cache the target resource for current navigation according to the potential destination given by the as attribute (and the
priority associated with the corresponding destination). prerender specifies that the user agent should preemptively fetch the target resource and process it in a way that helps deliver a faster response in the future. prev similar to the next keyword, relevant to <form>, <link>, <a>, and <area>, the prev values indicates that the current document is a part of a series, and that the link references ...
HTML documentation index - HTML: Hypertext Markup Language
it defines the meaning and structure of web content. other technologies besides html are generally used to describe a web page's appearance/presentation (css) or functionality/behavior (javascript). ...
...when present, makes the element not mutable, focusable, or even submitted with the form. the user can neither edit nor focus on the control, nor it's form control descendants. 53 html documentation index html, index, mdn meta a comprehensive index list of all the available html documentation. 54 html elements reference basic, element, html, reference, web, l10n:
priority this page lists all the html elements, which are created using tags. 55 <a>: the anchor element content, element, html, html text-level semantics, html:flow content, html:interactive content, html:palpable content, html:phrasing content, inline element, reference, web the html <a> element (or anchor element), with its href attribute, creates a hyperlink to web pages, fi...
Preloading content with rel="preload" - HTML: Hypertext Markup Language
ng features exist, but none are quite as fit for purpose as <link rel="preload">: <link rel="prefetch"> has been supported in browsers for a long time, but it is intended for prefetching resources that will be used in the next navigation/page load (e.g. when you go to the next page). this is fine, but isn't useful for the current page! in addition, browsers will give prefetch resources a lower
priority than preload ones — the current page is more important than the next. see link prefetching faq for more details. <link rel="prerender"> renders a specified webpage in the background, speeding up its load if the user navigates to it. because of the potential to waste users bandwidth, chrome treats prerender as a nostate prefetch instead. <link rel="subresource"> was supported in chrome a whi...
... <link rel="prerender"> renders a specified webpage in the background, speeding up its load if the user navigates to it. because of the potential to waste users bandwidth, chrome treats prerender as a nostate prefetch instead. <link rel="subresource"> was supported in chrome a while ago, and was intended to tackle the same issue as preload, but it had a problem: there was no way to work out a
priority for the items (as didn't exist back then), so they all got fetched with fairly low
priority. there are a number of script-based resource loaders out there, but they don't have any power over the browser's fetch prioritization queue, and are subject to much the same performance problems. specifications specification status comment preloadthe definition of 'preload' ...
SVG Core Attributes - SVG: Scalable Vector Graphics
participates in defining the language of the element, the language that non-editable elements are written in or the language that editable elements should be written in. the tag contains one single entry value in the format defined in the tags for identifying languages (bcp47) ietf document. svg 2 introduce the new lang attributes. if both lang and xml:lang attribute are used, xml:lang has
priority over lang. value: any valid language id; animatable: no tabindex the tabindex svg attribute allows you to control whether an element is focusable and to define the relative order of the element for the purposes of sequential focus navigation. value type: <integer>; animatable: no xml:base specifies a base iri other than the base iri of the document. value type: <iri>; animatable: no ...
...in all xml dialects to mark up the natural human language that an element contains. it's almost identical in usage to html's lang, but in conforming xml 1.0 documents, it does not allow the use of a null attribute value (xml:lang="") to indicate an unknown language. instead, use xml:lang="und". svg 2 introduce the new lang attributes. if both lang and xml:lang attribute are used, xml:lang has
priority over lang. value: any valid language id; animatable: no xml:space deprecated since svg 2 svg supports the standard xml attribute xml:space to specify the handling of white space characters within a given <text> element's character data. note: instead of using the xml:space attribute you should use the white-space css property. value: default | preserve; animatable: no ...
dominant-baseline - SVG: Scalable Vector Graphics
structed using the mathematical baseline-table in the font, and the baseline-table font-size is changed to the value of the font-size attribute on this element. central the baseline-identifier for the dominant-baseline is set to be central. the derived baseline-table is constructed from the defined baselines in a baseline-table in the font. that font baseline-table is chosen using the following
priority order of baseline-table names: ideographic, alphabetic, hanging, mathematical. the baseline-table font-size is changed to the value of the font-size attribute on this element. middle the baseline-identifier for the dominant-baseline is set to be middle. the derived baseline-table is constructed from the defined baselines in a baseline-table in the font. that font baseline-table is chosen using ...
...line-table names: ideographic, alphabetic, hanging, mathematical. the baseline-table font-size is changed to the value of the font-size attribute on this element. middle the baseline-identifier for the dominant-baseline is set to be middle. the derived baseline-table is constructed from the defined baselines in a baseline-table in the font. that font baseline-table is chosen using the following
priority order of baseline-table names: alphabetic, ideographic, hanging, mathematical. the baseline-table font-size is changed to the value of the font-size attribute on this element. text-after-edge the baseline-identifier for the dominant-baseline is set to be text-after-edge. the derived baseline-table is constructed from the defined baselines in a baseline-table in the font. the choice of which fon...
<xsl:template> - XSLT: Extensible Stylesheet Language Transformations
xslt/xpath reference: xslt elements, exslt functions, xpath functions, xpath axes the <xsl:template> element defines an output producing template. this element must have either the match attribute or the name attribute set. syntax <xsl:template match=pattern name=name mode=name
priority=number> <xsl:param> [optional] template </xsl:template> required attributes none. optional attributes match specifies a pattern that determines the elements for which this template should be used. it is a required attribute if there is no name attribute. name specifies a name for this template, by which it can be invoked through the <xsl:call-template> element. mode specifies a particular mode for this template, which can be matched by an attribute of the <xsl:apply-templates...
...mplate should be used. it is a required attribute if there is no name attribute. name specifies a name for this template, by which it can be invoked through the <xsl:call-template> element. mode specifies a particular mode for this template, which can be matched by an attribute of the <xsl:apply-templates> element. this is useful for processing the same information in multiple ways.
priority specifies a numeric
priority for this template. this can be any number other than infinity. the processor uses this number when more than one template matches the same node. type top-level, must be the child of <xsl:stylesheet> or <xsl:transform>. defined xslt, section 5.3. gecko support supported. ...
SDK and XUL Comparison - Archive of obsolete content
sdk simplicity the sdk provides high-level javascript apis to simplify many common tasks in add-on development, and tool support which greatly simplifies the process of developing, testing, and packaging an add-on. compatibility although we can't promise we'll never break a high-level api, maintaining compatibility across firefox versions is a top
priority for us. we've designed the apis to be forward-compatible with the new multiple process architecture (codenamed electrolysis) planned for firefox. we also expect to support both desktop and mobile firefox using a single edition of the sdk: so you'll be able to write one extension and have it work on both products. security if they're not carefully designed, firefox a...
Enhanced Extension Installation - Archive of obsolete content
no longer written, since the item folder is removed completely on uninstall. benjamin smedberg's recent chrome registry changes made it unnecessary to have log entries for chrome registration, so the uninstall log was only being used for file additions. this allows for the removal of the installlogreader/writer objects in the extension manager. it is possible to order install locations using the
priority property on an install location object. this determines whether or not an extension from one install location can "trump" the same extension installed at a different install location. user action requested notifications are now sent with the em-action-requested topic through the observer service: item-installed an item has just been downloaded and configured for installation for the first t...
Connecting to Remote Content - Archive of obsolete content
de; // transform the xml document to a xul document xuldocument = xsltprocessor.transformtodocument(responsexml); // append the xul node to a xul element xulnode = document.adoptnode(xuldocument.firstchild); document.getelementbyid("foo").appendchild(xulnode); }; we effectively transformed the xml file into xul and integrated it into the ui. note: security should be your number one
priority when handling remote content. do not allow event handlers or any other kinds of code to be passed through your parsers. if you need your generated xul to have js code in it, all of it should be added locally, never from the remote source. here are a couple of practical situations were you may want to use xslt: convert a large xml document directly into xul. filter a complex xml file and gene...
User Notifications and Alerts - Archive of obsolete content
le.getstring("xulschoolhello.acceptbutton.label"); acceptbutton.accesskey = this._bundle.getstring("xulschoolhello.acceptbutton.accesskey"); acceptbutton.popup = null; acceptbutton.callback = function() { that.acceptrequest(); }; // similarly for decline button. nb.appendnotification( message, "xulschoolhello-friend-notification", "chrome://xulschoolhello/skin/friend-notification.png", nb.
priority_info_high, [ acceptbutton, declinebutton ]); all browser tabs have a notification box by default, so you don't need to do any overlaying. the notificationbox elements can be obtained from the gbrowser object. in this case we don't pass any arguments to getnotificationbox so that we get the notification box that corresponds to the tab currently on display. the appendnotification method takes th...
Index of archived content - Archive of obsolete content
new security model for web services new skin notes overview of how downloads work plug-n-hack plug-n-hack get involved plug-n-hack phase1 plug-n-hack phase2 plug-n-hack tools supported plugin architecture porting nspr to unix platforms
priority content prism blogposts build bundlelibrary bundles configuration extensions faq hostwindow installer scripting styling proxy ui pydom rdf api rdf datasource how-to ...
Table Layout Strategy - Archive of obsolete content
fine fix_adj 5 // fixed width + padding due to col spans #define pct 6 // percent width of cell or col #define pct_adj 7 // percent width of cell or col from percent colspan #define min_pro 8 // desired width due to proportional <col>s or cols attribute #define final 9 // width after the table has been balanced, considering all of the others the
priority of allocations for columns is as follows: max(min_con, min_adj) max (pct, pct_adj) fix fix_adj max(des_con, des_adj), but use min_pro if present for a fixed width table, the column may get more space if the sum of the col allocations is insufficient column width info columns get their width information from style info <col width="200px"> and from the cells that belong into this column. ...
Tamarin Build System Documentation - Archive of obsolete content
u are trying to build and test after submitting a sandbox build view the build status page or the queue (if buildbot is busy) how do i view and change the queue? if buildbot is busy the queue is displayed http://tamarin-builds.mozilla.org/build_trigger/requestbuild.cfm the submitter of a sandbox build may remove a build request by clicking on the cancel button tamarin-redux builds are higher
priority than sandbox builds, they cannot be removed but the most checkin including all new checkins are built how can i run buildbot scripts locally? the buildbot scripts are located in the tamarin repository, get a current copy in your test repository cd into the build/buildbot/slaves directory: cd build/buildbot/slaves copy the your platform scripts directory into the scripts directory and cd into...
notification.type - Archive of obsolete content
« xul reference home type type: one of the values below indicates the type of notification, determined from the
priority. info a notification that is of lesser importance. warning a normal warning notification. critical a critical notification. ...
Attribute (XUL) - Archive of obsolete content
npopupshowing onpopupshown onsearchcomplete onselect ontextcommand ontextentered ontextrevert ontextreverted onunload onwizardback onwizardcancel onwizardfinish onwizardnext open ordinal orient pack pageid pageincrement pagestep parent parsetype persist persistence phase pickertooltiptext placeholder popup position predicate preference preference-editable primary
priority properties querytype readonly ref rel removeelement resizeafter resizebefore rows screenx screeny searchbutton searchsessions searchlabel selected selectedindex seltype setfocus showcaret showcommentcolumn showpopup size sizemode sizetopopup smoothscroll sort sortactive sortdirection sortresource sortresource2 spellcheck src state statedatasource statusbar stat...
Property - Archive of obsolete content
monthleadingzero name next nomatch notificationshidden object observes onfirstpage onlastpage open ordinal orient pack pagecount pageid pageincrement pageindex pagestep parentcontainer palette persist persistence placeholder pmindicator popup popupboxobject popupopen position predicate preferenceelements preferencepanes preferences
priority radiogroup readonly readonly ref resource resultspopup scrollboxobject scrollincrement scrollheight scrollwidth searchbutton searchcount searchlabel searchparam searchsessions second secondleadingzero securityui selected selectedbrowser selectedcount selectedindex selecteditem selecteditems selectedpanel selectedtab selectionend selections...
Multiple Rule Example - Archive of obsolete content
generated by earlier rules override those of later results, you will want to ensure that the rules are placed in the right order. the rules should be ordered from most specific to least specific. if you reversed the order of the two rules in the example above, three photos would still be displayed, but the larger rule that displays the image details would be dropped as the other rule has a higher
priority. the result would be that the palace photo would not show this information. « previousnext » ...
Open and Save Dialogs - Archive of obsolete content
fp.appendfilter("audio files (*.wav, *.mp3)","*.wav; *.mp3"); this line will add a filter for wave and mp3 audio files. the first argument is the title of the file type and the second is a semicolon-seperated list of file masks. you can add more masks or fewer masks as needed. you can call appendfilter as many times as necessary to add additional filters. the order you add them determines their
priority. typically, the first one added is selected by default. getting the selected file finally, you can show the dialog by calling the show() function. it takes no arguments but returns a status code that indicates what the user selected. note that the function does not return until the user has selected a file. the function returns one of three constants: returnok - the user selected a file and ...
Archived Mozilla and build documentation - Archive of obsolete content
plug-n-hack (pnh) is a proposed standard from the mozilla security team for defining how security tools can interact with browsers in a more useful and usable way. plugin architecture this page contains some notes on how plugins work internally in gecko. it is mainly of interest to gecko developers. porting nspr to unix platforms last modified 16 july 1998
priority content update: i've removed documents from this list that have been migrated into the wiki. the list of completed documents is available through the devedge page. prism prism is a simple xulrunner-based browser that hosts web applications without the normal web browser user interface. prism is based on a concept called site-specific browsers (ssb). an ssb is des...
Extentsions FAQ - Archive of obsolete content
t changing the properties? string properties are implemented as imap user flags. however not all servers support user flags, in which case you get reduced functionality as follows: all flags are stored in your local cache and are lost if your cache gets invalidated, and only "known" properties are copied when messages are copied. the list of "known" properties is: junkscore junkscoreorigin label
priority keywords. keywords - in the gui they are called tags. they replace the old labels (although the labels are still recognised). preserved properties source code - nsimapmailfolder::copymessages uaq friday, september 22 - 29, 2006 (↑ top) why extension preferences do not get changed until after it's upgrade? why extension preferences do not get changed until after it's upgrade? is t...
NPP_DestroyStream - Archive of obsolete content
ng parameters: instance pointer to current plug-in instance. stream pointer to current stream. reason reason the stream was destroyed. values: npres_done (most common): completed normally; all data was sent to the instance. npres_user_break: user canceled stream directly by clicking the stop button or indirectly by some action such as deleting the instance or initiating higher-
priority network operations. npres_network_err: stream failed due to problems with network, disk i/o, lack of memory, or other problems. returns if successful, the plug-in should return nperr_no_error. if unsuccessful, the plug-in should return an error code. for possible values, see error codes. description the browser calls the npp_destroystream function when a data stream sent to the plu...
NPP_URLNotify - Archive of obsolete content
pointer to the current plug-in instance. url url of the npn_geturlnotify() or npn_posturlnotify() request that has completed. reason reason code for completion of request. values: npres_done (most common): completed normally. npres_user_break: user canceled stream directly by clicking the stop button or indirectly by some action such as deleting the instance or initiating higher-
priority network operations. npres_network_err: stream failed due to problems with network, disk i/o, lack of memory, or other problems. notifydata plug-in-private value for associating a previous npn_geturlnotify() or npn_posturlnotify() request with a subsequent npp_urlnotify() call. description the browser calls npp_urlnotify() after the completion of a npn_geturlnotify() or npn_posturlno...
Reference - Archive of obsolete content
ne firewalls, as well as computers not connected to internet. unfortunately there is not an [easy] method to download content/packages of content off of devmo for 'local' browsing/viewing/printing, yet. it is in the "nice to have" category for us here, however i am unaware of anyone feverishly working on it. (there are some other priorities ahead of that, imho). if downloading the stuff is your
priority you are free to field ideas/concept to the devmo mailing list for discussion, and then actually code it (or find someone to do so). thanks for your thoughts --callek 15:05, 13 january 2006 (pst) notification when reorganization is finished leandro (localiser for the portuguese wiki) would like to be emailed when the js reference reorganization has been finished. his user page is here: http://d...
Fixing Incorrectly Sized List Item Markers - Archive of obsolete content
yling rules), which also will not validate. authors who are not concerned with making sure the rule applies across all namespaces can use a slightly more simplified rule: *:-moz-list-bullet, *:-moz-list-number {font-size: 1em;} recommendations if it is important to make list item markers match the font size of the content, use one of the suggested rules. in situations where validation is a
priority, segregate the rule into a separate stylesheet so that the rule will not confuse css validators run against the main stylesheet. related links bug 110360 bug 97351 original document information author(s): eric a. meyer, netscape communications last updated date: published 04 oct 2002; revised 07 mar 2003 copyright information: copyright © 2001-2003 netscape. all rights reserved. n...
Efficient animation for web games - Game development
exus-class hardware) while still being playable on low-end devices (such as a firefox os geeksphone keon). it would have been good to use as much third party software as possible, but most of what we tried was either too complicated for simple use-cases, or had performance issues on mobile. how this conclusion was reached, however, is more important than the conclusion itself. to begin with, the
priority was to write the code quickly to iterate on gameplay (and we’d certainly recommend doing this). we assumed that our own, naive code was making the game slower than we would like. to an extent, this was true: we found plenty to optimise in our own code, but it got to the point where we knew what we were doing ought to perform quite well, and it still wasn’t quite there. at this point, we turne...
Packet - MDN Web Docs Glossary: Definitions of Web-related terms
correction is when the receiver requests the sender to retransmit the entire data unit. forward error correction is when the receiver uses the error-correcting code which automatically corrects the errors at the transmitter, the calculation is performed before the packet is sent. when received at the destination, the checksum is recalculated, and compared with the one in the packet.
priority this field indicates which packet should have higher
priority over the others. the high
priority queue is emptied more quickly than lower
priority queues when the network is congested. addresses when routing network packets it requires two network addresses the source address of the sending host, and the destination address of the receiving host. user data - payload payload...
Privileged - MDN Web Docs Glossary: Definitions of Web-related terms
users are said to be privileged when they are granted additional rights to a system, or given ultimate access to content in a higher
priority level when compared to normal users. learn more general knowledge privilege (computing) on wikipedia learn about it information security tutorial ...
What is accessibility? - Learn web development
g web accessibility, or at least the accessibility of services available to the public (which could include websites, television, physical spaces, etc.) it is a good idea to find out what your laws are. if you make no effort to check that your content is accessible, you could be legally liable if people complain. this sounds serious, but really you just need to consider accessibility as the main
priority of your web development practices, as outlined above. if in doubt, get advice from a qualified lawyer. we're not going to offer any more advice than this, because we're not lawyers. accessibility apis web browsers make use of special accessibility apis (provided by the underlying operating system) that expose information useful for assistive technologies (ats) — ats mostly tend to make use of...
CSS FAQ - Learn web development
. you can use dom inspector's css style rules view to debug problems of this kind, but the most frequent instances of ignored style rules are listed below. html elements hierarchy the way css styles are applied to html elements depends also on the elements hierarchy. it is important to remember that a rule applied to a descendent overrides the style of the parent, in spite of any specificity or
priority of css rules. .news { color: black; } .corpname { font-weight: bold; color: red; } <!-- news item text is black, but corporate name is red and in bold --> <div class="news"> (reuters) <span class="corpname">general electric</span> (ge.nys) announced on thursday... </div> in case of complex html hierarchies, if a rule seems to be ignored, check if the element is inside another element with ...
What is a Domain Name? - Learn web development
in name? you cannot “buy a domain name”. this is so that unused domain names eventually become available to use again by someone else. if every domain name was bought, the web would quickly fill up with unused domain names that were locked and couldn't be used by anyone. instead, you pay for the right to use a domain name for one or more years. you can renew your right, and your renewal has
priority over other people's applications. but you never own the domain name. companies called registrars use domain name registries to keep track of technical and administrative information connecting you to your domain name. note : for some domain name, it might not be a registrar which is in charge of keeping track. for instance, every domain name under .fire is managed by amazon. finding an avail...
The business case for web performance - Learn web development
rmance? in this section, we discuss creating a clear business-case to convince decision-makers to make the investment. prerequisites: basic computer literacy, basic knowledge of client-side web technologies, and a basic understanding of web performance optimization. objective: to gain confidence in working with clients and management to get them to make web performance a
priority. making performance a business
priority we've discussed how prioritizing performance can improve user experience and therefore revenue. we know that not prioritizing web performance can result in a loss of business revenue. this article discusses how certain business metrics directly relate to a user's web performance experience and how to apply service design to boost the user's experien...
Introduction to client-side frameworks - Learn web development
an html document that is un-semantic and inaccessible. in fact, it's possible to write a fragile application that depends entirely on javascript and will not function without it. frameworks are not the source of our problems. with the wrong priorities, it's possible for any application to be fragile, bloated, and inaccessible. frameworks do, however, amplify our priorities as developers. if your
priority is to make a complex web app, it's easy to do that. however, if your priorities don't carefully guard performance and accessibility, frameworks will amplify your fragility, your bloat, and your inaccessibility. modern developer priorities, amplified by frameworks, have inverted the structure of the web in many places. instead of a robust, content-first network of documents, the web now often puts...
Working with Svelte stores - Learn web development
e those situations, we can take advantage of aria live regions, which provide a way to programmatically expose dynamic content changes so that they can be detected and announced by assistive technologies. we can declare a region that contains dynamic content that should be announced by assistive technologies with the aria-live property followed by the politeness setting, which is used to set the
priority with which screen readers should handle updates to that regions. the possible settings are off, polite, or assertive. for common situations, you also have several predefined specialized role values that can be used, like log, status and alert. in our case, just adding a role="alert" to the <div> container will do the trick, like this: <div role="alert" on:click={() => visible = false}> in gen...
Strategies for carrying out testing - Learn web development
essibility as a grade a testing requirement (we'll cover exactly what you should test in our handling common accessibility problems article) plus you might have other considerations. if you are creating some kind of company intranet for delivering sales figures to managers, and all the managers have been provided with windows phones for example, you will probably want to make mobile ie support a
priority. final support chart so, our final support chart will end up looking like so: a grade: chrome and firefox for windows/mac, safari for mac, edge and ie for windows (last two versions of each), ios safari for iphone/ipad, android stock browser (last two versions) on phone/tablet, chrome and firefox for android (last two versions) on phone tablet. accessibility passing common tests. b grade: i...
Accessibility API cross-reference
a composite widget, textbox, group, or application. n/a accessible_active_descendant_property aria-activedescendant critical info to convey immediately alert_high n/a n/a aria-live=assertive info that's important, but does not require immediacy alert_medium n/a n/a aria-live=polite low-
priority info such as a tip or hint alert_low n/a n/a n/a this object is changing or moving rapidly animated n/a n/a n/a indicates that the user input is currently directed to that object and it is "armed for selection." example: a highlighted menu item or a pressed push button. for receiving text input, see focused n/a armed ...
Gecko info for Windows accessibility vendors
a simply does not have the right semantics in it to support mathematics. mathml support is currently built into firefox. svg : scalable vector graphics. essentially w3c's xml-based version of flash - mixes well with other markup based content, supports the dom and has accessibility features. mozilla's svg project has been through several stalls and rebirths -- svg will probably become more of a
priority if other well known browsers support it. we will not know how, or whether, we will support svg accessibility until a better implementation comes along. firefox 1.5 supports svg. potentially it can make use of the same namespaced role and state attributes as dhtml accessibility, but it may require more powerful author-definable relationships. xforms: xforms is the future of online forms as envis...
ZoomText
install mailnews or address book if curious about the other apps. you will also need to install zoomtext 8.11.3. happy testing! you may wish to read through the current issues on this page before reporting bugs. send me email so that i'm aware that you're testing and let me know what bugs you're finding. my email address is aaronleventhal@moonset.net. issues for ai squared, from high to low
priority docreader and appreader don't respect the structure of the document -- no support for columns. zoomtext text to speech doesn't always echo what it should -- need more details from testers. mozilla issues cannot tab into frames and iframes. cannot customize the sidebar with the keyboard only. comboboxes report incorrect bounds, causing zoomtext tracking to move to the wrong area of th...
What to do and what not to do in Bugzilla
fy for the blocker severity. the exceptions to this rule are platform-specific or compiler-specific bugs. basically, anything that prevents builds from building, running, or being used for dogfood (able to use bugzilla, tinderbox, lxr, etc.) is a blocker. bug reports about crashes, hangs, data-loss, or severe security exploits (e.g. remote execution of arbitrary code) get the critical severity.
priority/target milestone as stated in the bugzilla etiquette, you must not change the target milestone and
priority fields. these fields are reserved for the developers. this also applies to bugs with target milestones in the past. reassigning bugs if a bug belongs to a different product or component it should be reassigned. when performing bug reassignments, keep the following things in mind: alwa...
Gecko Logging
her than set. if you're only interested in the content process you can use rust_log_child rather than rust_log. the log crate lists the available log levels: log level purpose rust logging levels error designates very serious errors. warn designates hazardous situations. info designates useful information. debug designates lower
priority information. trace designates very low
priority, often extremely verbose, information. it is common for debug and trace to be disabled at compile time in release builds, so you may need a debug build if you want logs from those levels. check the env_logger docs for more details on logging options. child processes / e10s sometimes it can be useful to only log child processes ...
HTMLIFrameElement.setVisible()
e() method of the htmliframeelement is used to change the visibility state of the browser <iframe>. the visible state of a browser <iframe> has nothing to do with its actual visibility (which is handled through css). the visible state is used to define the level of resources required by the browser <iframe>. if the visible state is set to true, it means that the browser <iframe> should have high
priority over the resources needed to render and handle its content. on the contrary, if its visible state is set to false, it has low
priority over the resources it needs. as an example, if the content of a browser <iframe> uses the window.requestanimationframe method and if the visible state is set to true, window.requestanimationframe will be called as often as necessary. however, if the visible state...
Gecko Keypress Event
trl+shift+'c' should not execute ctrl+'c' (bug 433192). during accel key handling, when shift is not down and the character without shift is not a numeral but the character with shift is a numeral, the key may be one of the numeral keys in the top row of a french azerty keyboard layout (or similar). because numerals are common in short cuts, the numeral from the key should be considered as a low
priority shortcut key candidate (bug 429219). these conditions are complex, and the handling rules may be modified if new issues are discovered. xul application developers should use key elements for handling accel keys, so as to make use of the handling logic already provided for these elements. xul applications should not attempt to implement shortcuts by interpreting keypress events. similarly, appli...
Hacking with Bonsai
e-opened, the web page is updated and the hook is cleared. use the bonsai query tool to see what's been checked in to the tree lately and to look at differences between versions. read the introduction to bonsai for more information about queries. the rules no checkins when the tree is closed unless you are fixing a build problem at the request of a build person. if you are on the hook, your top
priority is to be available to the build team to fix bustages. if you are on the hook, you are findable. you are either at your desk, or pageable, checking e-mail constantly, or on irc so that you can be found immediately and can respond to any problems in your code. helpful attitudes the build team are your friends. they are doing a not-so-fun job, so treat them with respect. people are "on the hook" c...
IME handling guide
rns flags which request the notifications. notify_ime_of_text_change, notify_ime_of_selection_change, notify_ime_of_position_change and notify_ime_of_composition_event_handled are always sent by following order: notify_ime_of_text_change notify_ime_of_selection_change notify_ime_of_position_change notify_ime_of_composition_event_handled if sending one of above notifications causes higher
priority notification, the sender should abort to send remaning notifications and restart from highet
priority notification again. additionally, all notifications except notify_ime_of_blur should be sent only when it's safe to run script since the notification may cause querying content and/or dispatching composition events. notify_ime_of_focus when an editable editor gets focus and imecontentobserver ...
AddonType
add-on types hold useful information about each type of add-on that may be installed. they are mostly used to help the ui know how to display the different types of add-on. properties attribute type description id string the unique id for the type. name string the localized name for the type. ui
priority integer a number used to determine the order of types displayed in the user interface. the lower the number the higher in the list the type will appear. built-in values: value category 2000 locale 4000 extension 5000 theme 6000 plugin viewtyp...
Profiling with the Firefox Profiler
ent (aka "child") processes. tip: long-running tasks in the parent process will block all input or drawing with the browser ui (aka "ui jank") whereas long-running tasks in the content process will block interactivity with the page but still allowing the user to pan and zoom around thanks to apz. tracing markers red: these indicate that the event loop is being unresponsive. note that high
priority events such as vsync are not included here. also note that this indicates what would have happened had there been an event waiting and not necessarily that there was an event pending for that long. black: these indicate synchronous ipc calls. ranges ranges of time can be zoomed in on by clicking and dragging anywhere in the tracing marker or thread areas. once a range is selected, a magnify...
PR_CreateThread
creates a new thread. syntax #include <prthread.h> prthread* pr_createthread( prthreadtype type, void (*start)(void *arg), void *arg, prthread
priority priority, prthreadscope scope, prthreadstate state, pruint32 stacksize); parameters pr_createthread has the following parameters: type specifies that the thread is either a user thread (pr_user_thread) or a system thread (pr_system_thread). start a pointer to the thread's root function, which is called as the root of the new thread. returning from this function is the only way to terminate a thread. arg a pointer to the root function's only parameter. nspr does not assess the type or the validity of the value passed in this parameter.
priority the initial
priority of the newly created thread. scope specifies y...
PR_Initialize
prmain. description pr_initialize initializes the nspr runtime and places nspr between the caller and the runtime library. this allows main to be treated like any other function, signaling its completion by returning and allowing the runtime to coordinate the completion of the other threads of the runtime. pr_initialize does not return to its caller until all user threads have terminated. the
priority of the main (or primordial) thread is pr_
priority_normal. the thread may adjust its own
priority by using pr_setthread
priority. ...
PR_Sleep
if you set ticks to pr_interval_no_wait, the thread yields. if ticks is not pr_interval_no_wait, pr_sleep uses an existing lock, but has to create a new condition for this purpose. if you have already created such structures, it is more efficient to use them directly. calling pr_sleep with the value of ticks set to pr_interval_no_wait simply surrenders the processor to ready threads of the same
priority. all other values of ticks cause pr_sleep to block the calling thread for the specified interval. threads blocked in pr_sleep are interruptible. ...
Process Initialization
ether the library has been initialized and performs implicit initialization if it hasn't. implicit initialization should suffice unless a program has specific sequencing requirements or needs to characterize the primordial thread. explicit initialization is rarely necessary. implicit initialization assumes that the initiator is the primordial thread and that the thread is a user thread of normal
priority. pr_init pr_initialize pr_initialized pr_cleanup pr_disableclockinterrupts pr_blockclockinterrupts pr_unblockclockinterrupts pr_setconcurrency pr_processexit pr_abort module initialization initialization can be tricky in a threaded environment, especially initialization that must happen exactly once. pr_callonce ensures that such initialization code is called only once. this facili...
Encrypt Decrypt MAC Keys As Session Objects
for intermediate header file, choose filename as inputfile name with extension ".header" */ strcpy(headerfilename, infilename); strcat(headerfilename, ".header"); /* for intermediate encrypted file, choose filename as inputfile name with extension ".enc" */ strcpy(encryptedfilename, infilename); strcat(encryptedfilename, ".enc"); pr_init(pr_user_thread, pr_
priority_normal, 0); switch (cmd) { case encrypt: /* if the intermediate header file already exists, delete it */ if (pr_access(headerfilename, pr_access_exists) == pr_success) { pr_delete(headerfilename); } /* if the intermediate encrypted already exists, delete it */ if (pr_access(encryptedfilename, pr_access_exists) == pr_success) { ...
Encrypt and decrypt MAC using token
for intermediate header file, choose filename as inputfile name with extension ".header" */ strcpy(headerfilename, infilename); strcat(headerfilename, ".header"); /* for intermediate encrypted file, choose filename as inputfile name with extension ".enc" */ strcpy(encryptedfilename, infilename); strcat(encryptedfilename, ".enc"); pr_init(pr_user_thread, pr_
priority_normal, 0); switch (cmd) { case encrypt: /* if the intermediate header file already exists, delete it */ if (pr_access(headerfilename, pr_access_exists) == pr_success) { pr_delete(headerfilename); } /* if the intermediate encrypted already exists, delete it */ if (pr_access(encryptedfilename, pr_access_exists) == pr_success) { ...
Enc Dec MAC Output Public Key as CSR
*/ rv = nss_initreadwrite(dbdir); if (rv != secsuccess) { pr_fprintf(pr_stderr, "nss_initreadwrite failed\n"); goto cleanup; } pk11_setpasswordfunc(getmodulepassword); slot = pk11_getinternalkeyslot(); rv = pk11_authenticate(slot, pr_true, &pwdata); if (rv != secsuccess) { pr_f...
Enc Dec MAC Using Key Wrap CertReq PKCS10 CSR
truststr = strdup(optstate->value); break; case 'v': sigverify = pr_true; break; default: usage(progname); break; } } pl_destroyoptstate(optstate); if (cmd == unknown || !dbdir) usage(progname); /* open db for read/write and authenticate to it */ pr_init(pr_user_thread, pr_
priority_normal, 0); initialized = pr_true; rv = nss_initreadwrite(dbdir); if (rv != secsuccess) { pr_fprintf(pr_stderr, "nss_initreadwrite failed\n"); goto cleanup; } pk11_setpasswordfunc(getmodulepassword); slot = pk11_getinternalkeyslot(); if (pk11_needlogin(slot)) { rv = pk11_authenticate(slot, pr_true, &pwdata); if (rv != secsucce...
Encrypt Decrypt_MAC_Using Token
*/ if (pr_access(headerfilename, pr_access_exists) == pr_success) { pr_delete(headerfilename); } /* if the intermediate encrypted already exists, delete it. */ if (pr_access(encryptedfilename, pr_access_exists) == pr_success) { ...
NSS Sample Code Sample_3_Basic Encryption and MACing
for intermediate header file, choose filename as inputfile name with extension ".header" */ strcpy(headerfilename, infilename); strcat(headerfilename, ".header"); /* for intermediate encrypted file, choose filename as inputfile name with extension ".enc" */ strcpy(encryptedfilename, infilename); strcat(encryptedfilename, ".enc"); pr_init(pr_user_thread, pr_
priority_normal, 0); switch (cmd) { case encrypt: /* if the intermediate header file already exists, delete it */ if (pr_access(headerfilename, pr_access_exists) == pr_success) { pr_delete(headerfilename); } /* if the intermediate encrypted already exists, delete it */ if (pr_access(encryptedfilename, pr_access_exists) == pr_success) { ...
EncDecMAC using token object - sample 3
eturn secfailure; } pr_close(infile); /* for intermediate header file, choose filename as inputfile name with extension ".header" */ strcpy(headerfilename, infilename); strcat(headerfilename, ".header"); /* for intermediate encrypted file, choose filename as inputfile name with extension ".enc" */ strcpy(encryptedfilename, infilename); strcat(encryptedfilename, ".enc"); pr_init(pr_user_thread, pr_
priority_normal, 0); switch (cmd) { case encrypt: /* if the intermediate header file already exists, delete it */ if (pr_access(headerfilename, pr_access_exists) == pr_success) { pr_delete(headerfilename); } /* if the intermediate encrypted already exists, delete it */ if (pr_access(encryptedfilename, pr_access_exists) == pr_success) { pr_delete(encryptedfilename); } /* open db for read/write and authenti...
sample2
= pr_true; break; case 'm': serialnumberstr = strdup(optstate->value); serialnumber = atoi(serialnumberstr); break; case 't': truststr = strdup(optstate->value); break; case 'v': sigverify = pr_true; break; default: usage(progname); break; } } pl_destroyoptstate(optstate); if (cmd == unknown || !dbdir) usage(progname); /* open db for read/write and authenticate to it */ pr_init(pr_user_thread, pr_
priority_normal, 0); initialized = pr_true; rv = nss_initreadwrite(dbdir); if (rv != secsuccess) { pr_fprintf(pr_stderr, "nss_initreadwrite failed\n"); goto cleanup; } pk11_setpasswordfunc(getmodulepassword); slot = pk11_getinternalkeyslot(); if (pk11_needlogin(slot)) { rv = pk11_authenticate(slot, pr_true, &pwdata); if (rv != secsuccess) { pr_fprintf(pr_stderr, "could not authenticate to token %s.\n", pk...
PKCS11 FAQ
with nss accessible through a shared library? yes, the token is call softokn3 (softokn3.dll on windows, libsoftokn3.so on most unix platforms). the nss softokn3 is not a complete pkcs #11 module, it was implemented only to support nss, though other products have managed to get it to work in their environment. there are a number of bugs against softoken's non-compliance, but these bugs have lower
priority than fixing nss's non-complient uses of pkcs #11 or adding new features to nss. if multiple pkcs #11 modules are loaded, how does nss determine which ones to use for the mechanisms required by ssl? nss uses the first slot it finds that can perform all the required operations. on servers, it's almost always the slot that contains the server's private key. does nss support the use of pkcs #11 ca...
JS_SetNativeStackQuota
ot be exceeded. to disable stack size checking, pass 0. spidermonkey allows for a distinction between system code (such as gcs, which may incidentally be triggered by script but are not strictly performed on behalf of such script), trusted script (as determined by js_settrustedprincipals), and untrusted script. each kind of code may have a different stack quota, allowing embedders to keep higher-
priority machinery running in the face of scripted stack exhaustion by something else. the stack quotas for each kind of code should be monotonically descending, and may be specified with this function. if 0 is passed for a given kind of code, it defaults to the value of the next-highest-
priority kind. this function may only be called immediately after the runtime is initialized and before any code is e...
Redis Tips
common programming tasks and data structures, and suggests some redis functions or data structures for them: dictionary lookup set, get, setnx, etc. counters set, incr, incrby list manipulation lpush, rpush, lpop, rpop, llen, linsert, lindex, etc. event logging lists, zsets, pubsub queues lists (rpush, blpop, blpoprpush, etc.)
priority queues zsets membership sets, bitstrings state hashes heartbeats zsets hit counters zsets message broadcast pubsub search reverse indexes (never use keys in production) documentation redis has fantastic documentation. yet redis is so easy to learn and use that you'll seldom feel you need to consult it. there ar...
Mork
at the beginning of the table. furthermore, the scope of the mid also serves as the default scope of rows defined within the table. the meta-row of the table (different from the meta-row of a row) contains a few things you might care about. the first is the kind column (k), where the mid is typically column-scoped (:c). next is the status column (s), which is defined as a single digit that is the
priority (which appears to be unused), a 'u' if it is unique (i.e., the only table of its kind), and a 'v' if it is verbose (which also appears to be unused). 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. for example, the message summary format files use a table fo...
nsIAccessibleStates
formatted as a hyperlink. the object role will usually be role_text_leaf. (see nsiaccessiblerole.constants). state_traversed 0x00800000 the object is a hyperlink that has been visited (previously clicked) by a user. state_multiselectable 0x01000000 supports multiple selection. state_extselectable 0x02000000 supports extended selection. state_alert_low 0x04000000 this information is of low
priority. state_alert_medium 0x08000000 this information is of medium
priority. state_alert_high 0x10000000 this information is of high
priority. state_protected 0x20000000 maps to gnome's role* atk_role_passwd_text, nothing for java? state_haspopup 0x40000000 new in msaa 2.0. state_required state_alert_low state_important state_alert_medium currently unused. state_invalid state_alert_high...
nsICommandLineHandler
introduced gecko 1.8 inherits from: nsisupports last changed in gecko 1.8 (firefox 1.5 / thunderbird 1.5 / seamonkey 1.0) each command line handler is registered in the category "command-line-handler". the entries in this category are read in alphabetical order, and each category value is treated as a service contract id implementing this interface. by convention, handlers with ordinary
priority should begin with "m". example: category entry value command-line-handler b-jsdebug @mozilla.org/venkman/clh;1 command-line-handler c-extensions @mozilla.org/extension-manager/clh;1 command-line-handler m-edit @mozilla.org/composer/clh;1 command-line-handler m-irc ...
nsIDNSService
stants resolve flag constants various flags that may be ored together to form the aflags parameter passed to asyncresolve() and resolve(). constant value description resolve_bypass_cache (1 << 0) this flag suppresses the internal dns lookup cache. resolve_canonical_name (1 << 1) the canonical name of the specified host will be queried. resolve_
priority_medium (1 << 2) the query is given medium
priority. if used with low, medium takes precedence. resolve_
priority_low (1 << 3) the query is given lower
priority. if used with medium, medium takes precedence. resolve_speculate (1 << 4) indicates request is speculative. speculative requests return errors if prefetching is disabled by configuration. reso...
nsIMsgCompFields
should be initialized to true and set to false when 'send anyway' is selected by a user. ...
nsIMsgSearchTerm
dsgrouping attribute boolean endsgrouping; methods matchrfc822string boolean matchrfc822string(in string astring, in string charset, in boolean charsetoverride); matchrfc2047string boolean matchrfc2047string(in string astring, in string charset, in boolean charsetoverride); matchdate boolean matchdate(in prtime atime); matchstatus boolean matchstatus(in unsigned long astatus); match
priority boolean match
priority(in nsmsg
priorityvalue
priority); matchage boolean matchage(in prtime days); matchsize boolean matchsize(in unsigned long size); matchlabel boolean matchlabel(in nsmsglabelvalue alabelvalue); matchjunkstatus boolean matchjunkstatus(in string ajunkscore); matchjunkpercent /* * test search term match for junkpercent * * @param ajunkpercent junkpercent for me...
nsIWebNavigation
sion history, all content is loaded from the cache (if available) and page state (such as form values and scroll position) is restored. void goforward( ); gotoindex() tells the object to navigate to the session history item at a given index. void gotoindex( in long index ); parameters index the index of the session history item to go to. loaduri() loads a given uri. this will give
priority to loading the requested uri in the object implementing this interface. if it can't be loaded here however, the uri dispatcher will go through its normal process of content loading. void loaduri( wstring uri, unsigned long loadflags, nsiuri referrer, nsiinputstream postdata, nsiinputstream headers ); parameters uri the uri string to load. for http and ftp urls and possibly others...
nsMsgRuleActionType
7696-1e28-4642-a400-fa327ae0b8d8)] interface nsmsgfilteraction { /* if you change these, you need to update filter.properties, look for filteractionx */ /* these longs are all actually of type nsmsgfilteractiontype */ const long custom=-1; /* see nsmsgfilteraction */ const long none=0; /* uninitialized state */ const long movetofolder=1; const long change
priority=2; const long delete=3; const long markread=4; const long killthread=5; const long watchthread=6; const long markflagged=7; const long label=8; const long reply=9; const long forward=10; const long stopexecution=11; const long deletefrompop3server=12; const long leaveonpop3server=13; const long junkscore=14; const long fetchbodyfrompop3server=15...
nsMsgSearchAttrib
rface nsmsgsearchattrib { const nsmsgsearchattribvalue custom = -2; /* a custom term, see nsimsgsearchcustomterm */ const nsmsgsearchattribvalue default = -1; const nsmsgsearchattribvalue subject = 0; /* mail and news */ const nsmsgsearchattribvalue sender = 1; const nsmsgsearchattribvalue body = 2; const nsmsgsearchattribvalue date = 3; const nsmsgsearchattribvalue
priority = 4; /* mail only */ const nsmsgsearchattribvalue msgstatus = 5; const nsmsgsearchattribvalue to = 6; const nsmsgsearchattribvalue cc = 7; const nsmsgsearchattribvalue toorcc = 8; const nsmsgsearchattribvalue alladdresses = 9; const nsmsgsearchattribvalue location = 10; /* result list only */ const nsmsgsearchattribvalue messagekey = 11; /* messa...
nsMsgSearchOp
st nsmsgsearchopvalue doesntcontain = 1; const nsmsgsearchopvalue is = 2; /* is and isn't also apply to some non-text attrs */ const nsmsgsearchopvalue isnt = 3; const nsmsgsearchopvalue isempty = 4; const nsmsgsearchopvalue isbefore = 5; /* for date attributes */ const nsmsgsearchopvalue isafter = 6; const nsmsgsearchopvalue ishigherthan = 7; /* for
priority. is also applies */ const nsmsgsearchopvalue islowerthan = 8; const nsmsgsearchopvalue beginswith = 9; const nsmsgsearchopvalue endswith = 10; const nsmsgsearchopvalue soundslike = 11; /* for ldap phoenetic matching */ const nsmsgsearchopvalue ldapdwim = 12; /* do what i mean for simple search */ const nsmsgsearchopvalue isgreaterthan = 13; const nsm...
nsMsgSearchTerm
defined in comm-central/ mailnews/ base/ search/ public/ nsmsgsearchcore.idl use this to specify the value of a search term [ptr] native nsmsgsearchterm(nsmsgsearchterm); // please note the ! at the start of this macro, which means the macro // needs to enumerate the non-string attributes. ...
nsMsgSearchValue
defined in comm-central/ mailnews/ base/ search/ public/ nsmsgsearchcore.idl use this to specify the value of a search term [ptr] native nsmsgsearchvalue(nsmsgsearchvalue); %{c++ typedef struct nsmsgsearchvalue { nsmsgsearchattribvalue attribute; union { nsmsg
priorityvalue
priority; prtime date; pruint32 msgstatus; /* see msg_flag in msgcom.h */ pruint32 size; nsmsgkey key; print32 age; /* in days */ nsimsgfolder *folder; nsmsglabelvalue label; pruint32 junkstatus; pruint32 junkpercent; } u; char *string; } nsmsgsearchvalue; ...
XPCOM Interface Reference by grouping
r nsiabstractworker data nsiarray nsicategorymanager nsicollection nsidictionary nsimutablearray nsisimpleenumerator nsisupportschar nsisupportsdouble nsisupportsfloat nsisupportsid nsisupportsinterfacepointer nsisupportsprbool nsisupportsprimitive nsisupportsprint16 nsisupportsprint32 nsisupportsprint64 nsisupports
priority nsisupportsprtime nsisupportspruint16 nsisupportspruint32 nsisupportspruint64 nsisupportspruint8 nsisupportsstring nsisupportsvoid nsisupportsweakreference nsivariant do not use nsienumerator nsiinprocesscontentframemessagemanager nsiscriptableio nsixpcscriptable future nsixmlhttprequestupload obsolete nsixmlrpccl...
nsMsgMessageFlags
senderauthed 0x00000200 partial 0x00000400 indicates whether or not the body we have is a complete message. queued 0x00000800 indicates whether or not the message is queued to be delivered. forwarded 0x00001000 indicates whether or not the message has been forwarded. priorities 0x0000e000 the set of bits that indicate the
priority. new 0x00010000 indicates whether or not the message is new since the last time the folder was opened. ignored 0x00040000 indicates whether or not the (sub-)thread has been ignored. imapdeleted 0x00200000 indicates whether or not the message has been deleted on the imap server mdnreportneeded 0x00400000 indicates whether or not a deliver...
nsMsgSearchOpValue
doesntcontain = 1; 152 const nsmsgsearchopvalue is = 2; /* is and isn't also apply to some non-text attrs */ 153 const nsmsgsearchopvalue isnt = 3; 154 const nsmsgsearchopvalue isempty = 4; 155 156 const nsmsgsearchopvalue isbefore = 5; /* for date attributes */ 157 const nsmsgsearchopvalue isafter = 6; 158 159 const nsmsgsearchopvalue ishigherthan = 7; /* for
priority. is also applies */ 160 const nsmsgsearchopvalue islowerthan = 8; 161 162 const nsmsgsearchopvalue beginswith = 9; 163 const nsmsgsearchopvalue endswith = 10; 164 165 const nsmsgsearchopvalue soundslike = 11; /* for ldap phoenetic matching */ 166 const nsmsgsearchopvalue ldapdwim = 12; /* do what i mean for simple search */ 167 168 const nsmsgsearchopvalue isgreatert...
nsMsgViewSortType
nts. for example to sort by date you would pass a function the value: components.interfaces.nsmsgviewsorttype.bydate mailnews/base/public/nsimsgdbview.idlscriptable please add a summary to this article. ...
Constants - Plugins
ption npres_done 0 (most common): completed normally; all data was sent to the instance. npres_network_err 1 stream failed due to problems with network, disk i/o, lack of memory, or other problems. npres_user_break 2 user canceled stream directly by clicking the stop button or indirectly by some action such as deleting the instance or initiating higher-
priority network operations. plug-in version constants constant value description np_version_major 0 major version number; changes with major code release number. np_version_minor 22 minor version number; changes with point release number. version feature constants npvers constant: version feature information value description ...
Streams - Plugins
stream parameter specifies the stream to be deleted. the reason parameter specifies why the stream was destroyed. it can have one of these values: npres_done (most common): normal completion; all data was sent to the instance. npres_user_break: the user canceled the stream directly by clicking the stop button or indirectly by some action, such as by deleting the instance or initiating higher-
priority network operations. npres_network_err: the stream failed because of problems with the network, disk i/o error, lack of memory, or some other problem. finding out how much data the plug-in can accept after a call to npp_newstream and before writing data to the plug-in, the browser calls npp_writeready to determine the maximum number of bytes that the plug-in can consume. this function allows t...
Use the Inspector API - Firefox Developer Tools
kdirty() - marks that the page has been changed by the inspector - a warning will be shown when leaving the page, since changes made through the inspector are rewritten on reload. bindable events using on: markuploaded called when the left panel has been refreshed, after page change. ready called on first markuploaded. pseudoclass called after toggle of a pseudoclass. layout-change "low-
priority change event for things like paint and resize." ...
CSSStyleDeclaration - Web APIs
styledeclaration.lengthread only the number of properties. see the item() method below. cssstyledeclaration.parentruleread only the containing cssrule. css properties cssstyledeclaration.cssfloat special alias for the float css property. cssstyledeclaration named properties dashed and camel-cased attributes for all supported css properties. methods cssstyledeclaration.getproperty
priority() returns the optional
priority, "important". cssstyledeclaration.getpropertyvalue() returns the property value given a property name. cssstyledeclaration.item() returns a css property name by its index, or the empty string if the index is out-of-bounds. an alternative to accessing nodelist[i] (which instead returns undefined when i is out-of-bounds). this is mostly useful for non-javascrip...
EffectTiming.fill - Web APIs
esenting the animation-fill-mode feature of css animations. when used to persist the effect of an animation indefinitely, however, they have a number of drawbacks: the forwards fill of an animation (or backwards fill if the animation is playing in reverse) will continue to override any changes to specified style indefinitely which can lead to confusing behavior. this is because animations take
priority in the css cascade over normal author styles. in order to avoid leaking memory when many filling animations overlap, the browser is required to remove overlapped animations which can lead to surprising results in some cases. rather than using fill modes to persist an animation, it is often simpler to set the final value of the animation effect directly in specified style: elem.animate({ trans...
ElementCSSInlineStyle.style - Web APIs
et as well as set the inline style of an element. when getting, it returns a cssstyledeclaration object that contains a list of all styles properties for that element with values assigned for the attributes that are defined in the element's inline style attribute. see the css properties reference for a list of the css properties accessible via style. the style property has the same (and highest)
priority in the css cascade as an inline style declaration set via the style attribute. setting styles styles should not be set by assigning a string directly to the style property (as in elt.style = "color: blue;"), since it is considered read-only, as the style attribute returns a cssstyledeclaration object which is also read-only. instead, styles can be set by assigning values to the properties of st...
Recommended Drag Types - Web APIs
t use the mozsetdataat() method to assign the data. similarly, when retrieving the data, you must use the mozgetdataat() method. event.datatransfer.mozsetdataat("application/x-moz-file", file, 0); if possible, include the file url of the file using both the text/uri-list and text/plain types. these types should be added afterward so that the more specific application/x-moz-file type has higher
priority. multiple files will be received during a drop as multiple items in the data transfer. see dragging and dropping multiple items for more details about this. the following example shows how to create an area for receiving dropped files: <listbox ondragenter="return checkdrag(event)" ondragover="return checkdrag(event)" ondrop="dodrop(event)"/> <script> function checkdrag(even...
RTCIceCandidate.RTCIceCandidate() - Web APIs
sponding field in the rtcicecandidate. if any of the fields is invalid, parsing of the string silently aborts without throwing an exception. the default value of candidate is the empty string, which indicates that the candidate is an "end-of-candidates" message. the following fields are initialized to null if they are not included in the rtcicecandidate.candidate property: foundation, component,
priority , ip, protocol, port, type, tcptype, relatedaddress, and relatedport. note: parsing of the candidate string is performed using the candidate-attribute grammar from the webrtc specification. exceptions typeerror the specified rtcicecandidateinit has values of null in both the sdpmid and sdpmlineindex properties. usage notes this constructor does not do complete validation of the specif...
RTCIceCandidate.type - Web APIs
tructor is used. you can't specify the value of type in the options object, but the address is automatically extracted from the candidate a-line, if it's formatted properly, being taken from its cand-type field. syntax var type = rtcicecandidate.type; value a domstring whose value is one of those defined by the rtcicecandidatetype enumerated type. these candidate types are listed in order of
priority; the higher in the list they are, the more efficient they are. host the candidate is a host candidate, whose ip address as specified in the rtcicecandidate.ip property is in fact the true address of the remote peer. srflx the candidate is a server reflexive candidate; the ip indicates an intermediary address assigned by the stun server to represent the candidate's peer anonymously. prflx ...
RTCIceCandidate - Web APIs
e the same base (the address from which the ice agent sent the candidate), and come from the same stun server. this is used to help optimize ice performance while prioritizing and correlating candidates that appear on multiple rtcicetransport objects. ip read only a domstring containing the ip address of the candidate. port read only an integer value indicating the candidate's port number.
priority read only a long integer value indicating the candidate's
priority. protocol read only a string indicating whether the candidate's protocol is "tcp" or "udp". the string is one of those in the enumerated type rtciceprotocol. relatedaddress read only if the candidate is derived from another candidate, relatedaddress is a domstring containing that host candidate's ip address. for host candi...
RTCIceCandidatePairStats.nominated - Web APIs
used as the configuration for the webrtc connection. syntax nominated = rtcicecandidatepairstats.nominated; value a boolean value which is set to true by the ice layer if the controlling user agent has indicated that the candidate pair should be used to configure the webrtc connection between the two peers. note: if more than one candidate pair are nominated at the same time, the one whose
priority is higher will be selected for use. once a candidate pair has been nominated and the two peers have each reconfigured themselves to use the specified configuration, the ice negotiation process can potentially end (or it can continue, to allow the connection to adapt to changing conditions). specifications specification status comment identifiers for webrtc's statis...
RTCIceCandidatePairStats.state - Web APIs
alue is represented by rtcstatsicecandidatepairstate. when a candidate pair is added to the check list, it begins in the frozen state. as soon as there are no checks ongoing which block the pair from being analyzed, it is unfrozen and moves into the waiting state. this may happen immediately upon being added to the check list. each time a candidate pair is done being checked, the next-highest
priority candidate pair remaining on the check list moves from the waiting state to the in-progress state, and its check begins. if the check fails for any reason, the pair moves into its final state, failed. if the check succeeds, the pair ends up in the succeeded state. the ice check list state for any given pair of ice candidates can be found in the corresponding the state property. specifications ...
RTCIceCandidateStats - Web APIs
eleased. for turn candidates, the turn allocation is no longer active for deleted candidates. this property is not present for remote candidates. networktype optional a string from the rtcnetworktype enumerated type which indicates the type of interface used for a local candidate. this property is only present for local candidates. port optional the network port number used by the candidate.
priority optional the candidate's
priority, corresponding to rtcicecandidate.
priority. protocol optional a string specifying the protocol (tcp or udp) used to transmit data on the port. relayprotocol optional a string identifying the protocol used by the endpoint for communicating with the turn server; valid values are tcp, udp, and tls. only present for local candidates. transportid optional a str...
RTCIceCandidateType - Web APIs
host the candidate is a host candidate, whose ip address as specified in the rtcicecandidate.ip property is in fact the true address of the remote peer. ...
RTCRtpSendParameters - Web APIs
rence specifies the preferred way the webrtc layer should handle optimizing bandwidth against quality in constrained-bandwidth situations; the value comes from the rtcdegradationpreference enumerated string type, and the default is balanced. encodings an array of rtcrtpencodingparameters objects, each specifying the parameters for a single codec that could be used to encode the track's media.
priority a string from the rtc
prioritytype enumerated type which indicates the encoding's
priority. the default value is low. transactionid a string containing a unique id for the last set of parameters applied; this value is used to ensure that setparameters() can only be called to alter changes made by a specific previous call to getparameters(). specifications specification status ...
RTCRtpSender.setParameters() - Web APIs
rence specifies the preferred way the webrtc layer should handle optimizing bandwidth against quality in constrained-bandwidth situations; the value comes from the rtcdegradationpreference enumerated string type, and the default is balanced. encodings an array of rtcrtpencodingparameters objects, each specifying the parameters for a single codec that could be used to encode the track's media.
priority a string from the rtc
prioritytype enumerated type which indicates the encoding's
priority. the default value is low. transactionid a string containing a unique id for the last set of parameters applied; this value is used to ensure that setparameters() can only be called to alter changes made by a specific previous call to getparameters(). return value a promise that resolves when the rt...
RTCStatsIceCandidatePairState - Web APIs
ther check is successful. once that check has succeeded, this pair will unfreeze and move into the waiting state. in-progress a check has been initiated for this pair, but the check's transaction is still in progress. succeeded a check for this pair has been completed successfully. waiting this pair has not yet been checked, but the check can be performed as soon as this pair is the highest
priority pair remaining in the waiting state. specifications specification status comment identifiers for webrtc's statistics apithe definition of 'rtcstatsicecandidatepairstate' in that specification. candidate recommendation initial specification. ...
Introduction to the Real-time Transport Protocol (RTP) - Web APIs
this article provides an overview of what rtp is and how it functions in the context of webrtc. note: webrtc actually uses srtp (secure real-time transport protocol) to ensure that the exchanged data is secure and authenticated as appropriate. keeping latency to a minimum is especially important for webrtc, since face-to-face communication needs to be performed with as little latency as possible. ...
Controlling multiple parameters with ConstantSourceNode - Web APIs
the solution is simple, and it involves using an audio node type which, at first glance, doesn't look all that useful: constantsourcenode. the technique this is actually a really easy way to do something that sounds like it might be hard to do. you simply need to create a constantsourcenode and connect it to all of the audioparams whose values should be linked to always m...
window.requestIdleCallback() - Web APIs
functions are generally called in first-in-first-out order; however, callbacks which have a timeout specified may be called out-of-order if necessary in order to run them before the timeout elapses. ...
WindowOrWorkerGlobalScope.queueMicrotask() - Web APIs
crotask to be executed at a safe time prior to control returning to the browser's event loop. the microtask is a short function which will run after the current task has completed its work and when there is no other code waiting to be run before control of the execution context is returned to the browser's event loop. this lets your code run without interfering with any other, potentially higher
priority, code that is pending, but before the browser regains control over the execution context, potentially depending on work you need to complete. you can learn more about how to use microtasks and why you might choose to do so in our microtask guide. the importance of microtasks comes in its ability to perform tasks asynchronously but in a specific order. see using microtasks in javascript with queu...
WindowOrWorkerGlobalScope - Web APIs
scope.fetch() starts the process of fetching a resource from the network. windoworworkerglobalscope.queuemicrotask() enqueues a microtask—a short function to be executed after execution of the javascript code completes and control isn't being returned to a javascript caller, but before handling callbacks and other tasks. this lets your code run without interfering with other, possibly higher
priority, code, but before the browser runtime regains control, potentially depending upon the work you need to complete. windoworworkerglobalscope.setinterval() schedules a function to execute every time a given number of milliseconds elapses. windoworworkerglobalscope.settimeout() schedules a function to execute in a given amount of time. specifications specification status comment...
ARIA live regions - Accessibility
n the original markup, or dynamically using javascript. simple live regions dynamic content which updates without a page reload is generally either a region or a widget. simple content changes which are not interactive should be marked as live regions. below is a list of each related aria live region property with a description. aria-live: the aria-live=politeness_setting is used to set the
priority with which screen reader should treat updates to live regions - the possible settings are: off, polite or assertive. the default setting is off. this attribute is by far the most important. aria-controls: the aria-controls=[idlist] is used to associate a control with the regions that it controls. regions are identified just like an id in a div, and multiple regions can be associated with a co...
Implementing a Microsoft Active Accessibility (MSAA) Server - Accessibility
ges in the applications they already support, or new products other than yours which they need to support. it's very difficult to get vendors to spend time testing an msaa implementation, send feedback or help find out why things aren't working. time and version commitments often fall through. there is always a belated new version due around corner, after which you will be promised to be the next
priority. solution: try to reach out in a friendly manner to the assistive technology company. be as easy to work with as you possibly can -- this includes being extremely responsive to their bug reports with new test builds, as well as being very communicative about what you have changed and when. do as much work as you possibly can without their help. see if your organization can offer something they c...
CSS Grid Layout and Accessibility - CSS: Cascading Style Sheets
to get the layout that we want. therefore the starting point of your page should be a well structured and accessible source document. as is noted in the css grid layout specification, this is quite often going to give you a good structure for your smallest screen devices too. if a user is scrolling through a long document on mobile, the priorities for that user quite often map to what should be a
priority in the source. create a responsive, and responsible grid with a solid document you can begin to add your layout, it is likely you will be using media queries to create additional columns and make changes for different screen sizes and devices. grid can be really very useful here, elements deprioritized in the mobile source order can be moved into a sidebar in a desktop layout, for example. the ...
The stacking context - CSS: Cascading Style Sheets
the stacking context in the previous part of this article, using z-index, the rendering order of certain elements is influenced by their z-index value. this occurs because these elements have special properties which cause them to form a stacking context. ...
Specificity - CSS: Cascading Style Sheets
s foreign css (from external libraries, like bootstrap or normalize.css). never use !important when you're writing a plugin/mashup. never use !important on site-wide css. instead of using !important, consider: make better use of the css cascade use more specific rules. by indicating one or more elements before the element you're selecting, the rule becomes more specific and gets higher
priority: <div id="test"> <span>text</span> </div> div#test span { color: green; } div span { color: blue; } span { color: red; } no matter the order, text will be green because that rule is most specific. (also, the rule for blue overwrites the rule for red, notwithstanding the order of the rules) as a nonsense special case for (2), duplicate simple selectors to increase specificity when y...
color-adjust - CSS: Cascading Style Sheets
the output device for legibility purposes. if the output device is a printer, and to save ink, dark or extremely dense background images might be removed. when printing a page, the browser might want to replace light-colored text on a dark background with dark text on a white background. any options the user agent offers the user to allow them to control the use of color and images will take
priority over the value of color-adjust. in other words, there isn't any guarantee that color-adjust will do anything. not only can the user override the behavior, but each user agent is allowed to decide for itself how to handle color-adjust in any given situation. formal definition initial valueeconomyapplies toall elementsinheritedyescomputed valueas specifiedanimation typediscrete formal syntax e...
flex-basis - CSS: Cascading Style Sheets
erwise set with box-sizing. the source for this interactive example is stored in a github repository. if you'd like to contribute to the interactive examples project, please clone https://github.com/mdn/interactive-examples and send us a pull request. note: in case both flex-basis (other than auto) and width (or height in case of flex-direction: column) are set for an element, flex-basis has
priority. syntax /* specify <'width'> */ flex-basis: 10em; flex-basis: 3px; flex-basis: auto; /* intrinsic sizing keywords */ flex-basis: fill; flex-basis: max-content; flex-basis: min-content; flex-basis: fit-content; /* automatically size based on the flex item’s content */ flex-basis: content; /* global values */ flex-basis: inherit; flex-basis: initial; flex-basis: unset; the flex-basis prop...
font-family - CSS: Cascading Style Sheets
often convenient to use the shorthand property font to set font-size and other font related properties all at once. you should always include at least one generic family name in a font-family list, since there's no guarantee that any given font is available. this lets the browser select an acceptable fallback font when necessary. the font-family property specifies a list of fonts, from highest
priority to lowest. font selection does not simply stop at the first font in the list that is on the user's system. rather, font selection is done one character at a time, so that if an available font does not have a glyph for a needed character, the latter fonts are tried. (however, this doesn't work in internet explorer 6 or earlier.) when a font is only available in some styles, variants, or sizes, tho...
z-index - CSS: Cascading Style Sheets
send us a pull request. for a positioned box (that is, one with any position other than static), the z-index property specifies: the stack level of the box in the current stacking context. whether the box establishes a local stacking context. syntax /* keyword value */ z-index: auto; /* <integer> values */ z-index: 0; z-index: 3; z-index: 289; z-index: -1; /* negative values to lower the
priority */ /* global values */ z-index: inherit; z-index: initial; z-index: unset; the z-index property is specified as either the keyword auto or an <integer>. values auto the box does not establish a new local stacking context. the stack level of the generated box in the current stacking context is the same as its parent's box. <integer> this <integer> is the stack level of the generated box ...
Optimization and performance - Developer guides
k effectively both for users of powerful desktop systems as well as for handheld devices with less power. there are several tools available to check the performance of a website or blog. the most notable tools are listed below. google pagespeed insights lighthouse webpagetest browser developer tools the above resources also include web performance best practices. making web performance a
priority by considering web performance throughout the development process is important in ensuring users get the best user experience possible. there are no subpages at this time. ...
HTML attribute reference - HTML: Hypertext Markup Language
es the language of the linked resource. http-equiv <meta> defines a pragma directive. icon <command> specifies a picture which represents the command. id global attribute often used with css to style a specific element. the value of this attribute must be unique. importance <iframe>, <img>, <link>, <script> indicates the relative fetch
priority for the resource. integrity <link>, <script> specifies a subresource integrity value that allows browsers to verify what they fetch. intrinsicsize <img> this attribute tells the browser to ignore the actual intrinsic size of the image and pretend it’s the size specified in the attribute. inputmode <textarea>, contenteditable provides a hin...
<a>: The Anchor element - HTML: Hypertext Markup Language
ob: url) defining a value suggests it as the filename. / and \ characters are converted to underscores (_). filesystems may forbid other characters in filenames, so browsers will adjust the suggested name if necessary. notes: download only works for same-origin urls, or the blob: and data: schemes. if content-disposition has a different filename than download, the header takes
priority. (if content-disposition: inline, firefox prefers the header while chrome prefers download.) href the url that the hyperlink points to. links are not restricted to http-based urls — they can use any url scheme supported by browsers: sections of a page with fragment urls pieces of media files with media fragments telephone numbers with tel: urls email addresses with mailto: ...
<iframe>: The Inline Frame element - HTML: Hypertext Markup Language
llowpaymentrequest set to true if a cross-origin <iframe> should be allowed to invoke the payment request api. this attribute is considered a legacy attribute and redefined as allow="payment". csp a content security policy enforced for the embedded resource. see htmliframeelement.csp for details. height the height of the frame in css pixels. default is 150. importance the download
priority of the resource in the <iframe>'s src attribute. allowed values: auto (default) no preference. the browser uses its own heuristics to decide the
priority of the resource. high the resource should be downloaded before other lower-
priority page resources. low the resource should be downloaded after other higher-
priority page resources. loading indicates how the browser should ...
<img>: The Image Embed element - HTML: Hypertext Markup Language
atomic presentation with other content. async decode the image asynchronously, to reduce delay in presenting other content. auto default: no preference for the decoding mode. the browser decides what is best for the user. height the intrinsic height of the image, in pixels. must be an integer without a unit. importance indicates the relative download importance of the resource.
priority hints allow the values: auto: no preference. the browser may use its own heuristics to prioritize the image. high: the image is of high
priority. low: the image is of low
priority. intrinsicsize this attribute tells the browser to ignore the actual intrinsic size of the image and pretend it’s the size specified in the attribute. specifically, the image would raster at these dimensi...
<link>: The External Resource Link element - HTML: Hypertext Markup Language
document's document.stylesheets list. href this attribute specifies the url of the linked resource. a url can be absolute or relative. hreflang this attribute indicates the language of the linked resource. it is purely advisory. allowed values are determined by bcp47. use this attribute only if the href attribute is present. importance indicates the relative importance of the resource.
priority hints are delegated using the values: auto: indicates no preference. the browser may use its own heuristics to decide the
priority of the resource. high: indicates to the browser that the resource is of high
priority. low: indicates to the browser that the resource is of low
priority. note: the importance attribute may only be used for the <link> element if rel="preload" or rel="prefet...
lang - HTML: Hypertext Markup Language
in central america. “international spanish” would just be es. the script subtag precedes the region subtag if both are present — ru-cyrl-by is russian, written in the cyrillic alphabet, as spoken in belarus. to find the correct subtag codes for a language, try the language subtag lookup. even if the lang attribute is set, it may not be taken into account, as the xml:lang attribute has
priority. for the css pseudo-class :lang, two invalid language names are different if their names are different. so while :lang(es) matches both lang="es-es" and lang="es-419", :lang(xyzzy) would not match lang="xyzzy-zorp!". specifications specification status comment html living standardthe definition of 'lang' in that specification. living standard no change from la...
Global attributes - HTML: Hypertext Markup Language
structure the vocabulary set by itemtype will be active. lang helps define the language of an element: the language that non-editable elements are in, or the language that editable elements should be written in by the user. the attribute contains one “language tag” (made of hyphen-separated “language subtags”) in the format defined in tags for identifying languages (bcp47). xml:lang has
priority over it. part a space-separated list of the part names of the element. part names allows css to select and style specific elements in a shadow tree via the ::part pseudo-element. slot assigns a slot in a shadow dom shadow tree to an element: an element with a slot attribute is assigned to the slot created by the <slot> element whose name attribute's value matches that slot attribute's value. ...
Link types - HTML: Hypertext Markup Language
a specific part of the document or to the document as a whole. only the data on the page can indicate this. note: although recognized, the synonym copyright is incorrect and must be avoided. <a>, <area>, <form>, <link> none. manifest indicates that the linked file is a web app manifest. <link> <a>, <area>, <form> modulepreload initiates early (and high-
priority) loading of module scripts. <link> <a>, <area>, <form> next indicates that the hyperlink leads to the next resource of the sequence the current page is in. note: other link types related to linking resources in the same sequence are first, prev, last. <a>, <area>, <form>, <link> none. nofollow indicates that the linked document is not endorsed by the a...
Content negotiation - HTTP
ry value of the accept-ch header and indicates the amount of time the device should opt-in to sharing the amount of device memory with the server. the value is given in miliseconds and it's use is optional. the accept-encoding header the accept-encoding header defines the acceptable content-encoding (supported compressions). the value is a q-factor list (e.g.: br, gzip;q=0.8) that indicates the
priority of the encoding values. the default value identity is at the lowest
priority (unless otherwise declared). compressing http messages is one of the most important ways to improve the performance of a web site, it shrinks the size of the data transmitted and makes better use of the available bandwidth; browsers always send this header and the server should be configured to abide to it and to use co...
Grouping operator ( ) - JavaScript
like to contribute to the interactive examples project, please clone https://github.com/mdn/interactive-examples and send us a pull request. syntax ( ) description the grouping operator consists of a pair of parentheses around an expression or sub-expression to override the normal operator precedence so that expressions with lower precedence can be evaluated before an expression with higher
priority. as it sounds, it groups what's inside of the parentheses. examples using the grouping operator overriding multiplication and division first, then addition and subtraction to evaluate addition first. var a = 1; var b = 2; var c = 3; // default precedence a + b * c // 7 // evaluated by default like this a + (b * c) // 7 // now overriding precedence // addition before multiplication (a ...
Critical rendering path - Web Performance
performance, it is important to remember to allow for both layout and re-paint times when measuring how long an animation frame may take. the styles applied to each node increase the paint time, but removing style that increases the paint by 0.001ms may not give you the biggest bang for your optimization buck. remember to measure first. then you can determine whether it should be an optimization
priority. optimizing for crp improve page load speed by prioritizing which resources get loaded, controlling the order in which they are loaded, and reducing the file sizes of those resources. performance tips include 1) minimizing the number of critical resources by deferring their download, marking them as async, or eliminating them altogether, 2) optimizing the number of requests required along with ...
Populating the page: how browsers work - Web Performance
those without an async or defer attribute—block rendering, and pause the parsing of html. though the browser's preload scanner hastens this process, excessive scripts can still be a significant bottleneck. preload scanner while the browser builds the dom tree, this process occupies the main thread. as this happens, the preload scanner will parse through the content available and request high
priority resources like css, javascript, and web fonts. thanks to the preload scanner, we don't have to wait until the parser finds a reference to an external resource to request it. it will retrieve resources in the background so that by the time the main html parser reaches requested assets, they may possibly already be in flight, or have been downloaded. the optimizations the preload scanner provides r...
Web Performance
here are no clear set rules as to what constitutes a slow pace when loading pages, but there are specific guidelines for indicating content will load (1 second), idling (50ms), animating (16.7s) and responding to user input (50 to 200ms).the business case for web performanceyou know web performance is important, but how do you convince clients and management to invest in performance and make it a
priority. in this article, we'll discuss creating a clear business case to convince decision-makers to make the investment.understanding latencylatency is the time it takes for a packet of data to travel from source to a destination. in terms of performance optimization, it's important to optimize to reduce causes of lacency and to test site performance emulating high latency to optimizer for users with l...
additive - SVG: Scalable Vector Graphics
an offset or delta to an attribute's value, rather than as absolute values. four elements are using this attribute: <animate>, <animatecolor>, <animatemotion>, and <animatetransform> usage notes value replace | sum default value replace animatable no sum specifies that the animation will add to the underlying value of the attribute and other lower
priority animations. replace specifies that the animation will override the underlying value of the attribute and other lower
priority animations. this is the default, however the behavior is also affected by the animation value attributes by and to, as described in smil animation: how from, to and by attributes affect additive behavior. specifications specification status comment ...