Index - Web APIs
34 addresserrors.languagecode api, address, addresserrors, deprecated, language, languagecode, locale, payment request, payment request api, property, reference, payment an object based on addresserrors includes a languagecode property when the address's languagecode property couldn't be validated.
... 90 animationevent.initanimationevent() api, animationevent, cssom, method, obsolete, web animations the animationevent.initanimationevent() method initializes an animation event created using the deprecated document.createevent("animationevent") method.
... 143 audiolistener.dopplerfactor api, audio, audiolistener, deprecated, doppler, doppler effect, property, reference, web audio api, dopplerfactor, effects the deprecated dopplerfactor property of the audiolistener interface is a double value representing the amount of pitch shift to use when rendering a doppler effect.
...And 162 more matches

SVG documentation index - SVG: Scalable Vector Graphics
19 accent-height deprecated, needsexample, svg, svg attribute the accent-height attribute defines the distance from the origin to the top of accent characters, measured by a distance within the font coordinate system.
... 23 alphabetic deprecated, svg, svg attribute the alphabetic attribute defines the lower baseline of a font.
... 25 arabic-form deprecated, svg, svg attribute the arabic-form attribute indicates which of the four possible forms an arabic glyph represents.
...And 71 more matches

Index - Archive of obsolete content
6 navigator.moznotification api, deprecated, mobile, non-standard, property, reference provides support for creating notification objects, which are used to display desktop notification alerts to the user.
...the actual keys are: 489 introducing the audio api extension deprecated the audio data api extension extends the html5 specification of the <audio> and <video> media elements by exposing audio metadata and raw audio data.
...liveconnect gives your extension's javascript code (linked from or contained in xul code) access to 2 objects: java and packages (note that per this thread, although the new documentation for the liveconnect reimplementation states that these globals will be deprecated (in the context of applets), "firefox and the java plug-in will continue to support the global java/packages keywords, in particular in the context of firefox extensions.").
...And 35 more matches

Python binding for NSS
deprecated elements of the python-nss api are marked with python deprecation warnings as well as being documented in the nss module documentation.
...some functionality and interface have already been deprecated due to lessons learned.
...all prior cvs information (including release tags) were imported into the new mercurial repositories, as such there is no need to utilize the deprecated cvs repositories, use mercurial instead.
...And 13 more matches

HTML documentation index - HTML: Hypertext Markup Language
12 contextmenu deprecated, global attributes, html, reference, contextmenu the contextmenu global attribute is the id of a <menu> to use as the contextual menu for this element.
... 16 dropzone deprecated, global attributes, html, reference the dropzone global attribute is an enumerated attribute indicating what types of content can be dropped on an element, using the html drag and drop api.
... 59 <applet>: the embed java applet element element, html, java, obsolete, reference, web, applet the obsolete html applet element (<applet>) embeds a java applet into the document; this element has been deprecated in favor of <object>.
...And 8 more matches

SDK API Lifecycle - Archive of obsolete content
deprecated we plan to change this module, and backwards compatibility should not be expected.
... deprecation process deprecation in the chosen release, the sdk team will communicate the module's deprecation: update the module's stability index to be "deprecated" include a deprecation notice in the release notes, the add-ons blog, and the jetpack google group.
... during this time, the module will be in the deprecated state.
...And 6 more matches

Index
its use is deprecated.
... the preferred way to implement a function is to use the js::callargs structure defined there; the macros providing equivalent functionality are deprecated.
... 168 jsval_lock jsapi reference, obsolete, spidermonkey jsval_lock is a deprecated feature that is supported only for backward compatibility with existing applications.
...And 6 more matches

DeprecationReportBody - Web APIs
a deprecation report is generated when a deprecated feature (e.g.
... a deprecated api method) is used on a document being observed by a reportingobserver.
... properties id a string representing the deprecated feature that generated the report, for example navigatorgetusermedia.
...And 6 more matches

nsIDOMWindowUtils
transferable atransferable); void getclassname(in object aobj); boolean sendkeyevent(in astring atype, in long akeycode, in long acharcode, in long amodifiers, [optional] in boolean apreventdefault); obsolete since gecko 15.0 boolean sendkeyevent(in astring atype, in long akeycode, in long acharcode, in long amodifiers, [optional] in unsigned long aadditionalflags); deprecated since gecko 38.0 void sendmouseevent(in astring atype, in float ax, in float ay, in long abutton, in long aclickcount, in long amodifiers, [optional] in boolean aignorerootscrollframe); void sendmouseeventtowindow(in astring atype, in float ax, in float ay, in long abutton, in long aclickcount, in long amodifiers, [optional] in boolean aignorerootscrollframe); void se...
... deprecated since gecko 38.0 key_flag_not_synthesized_for_tests 0x0002 key_flag_location_standard 0x0010 location attrubute of the sending key event by sendkeyevent() returns keyboardevent.dom_key_location_standard if this is specified to the aadditionalflags.
... deprecated since gecko 38.0 key_flag_location_left 0x0020 location attrubute of the sending key event by sendkeyevent() returns keyboardevent.dom_key_location_left if this is specified to the aadditionalflags.
...And 5 more matches

SVG 2 support in Mozilla - SVG: Scalable Vector Graphics
dataset attribute for svgelement implementation status unknown moved pathlength attribute and gettotallength() and getpointatlength() methods from svgpathelement to svggeometryelement implemented (bug 1239100) document structure change notes svgsvgelement.suspendredraw(), svgsvgelement.unsuspendredraw(), and svgsvgelement.unsuspendredrawall() deprecated turned into no-ops (bug 734079) externalresourcesrequired attribute removed implementation status unknown auto value for width and height in <image> implementation status unknown referencing entire document with <use> implementation status unknown lang attribute on <desc> and <title> implemented (bug 721920) css transforms on outermost <...
...svg> not affecting svgsvgelement.currentscale or svgsvgelement.currenttranslate implementation status unknown rootelement attribute deprecated implementation status unknown svgelementinstance and svgelementinstancelist and corresponding attributes on svguseelement removed implementation status unknown <use> event flow following shadow dom spec.
... implementation status unknown auto as initial value for width and height attributes of <svg> implementation status unknown baseprofile and version attributes removed from <svg> implementation status unknown svgsvgelement.forceredraw() deprecated turned into a no-op (bug 733764) svgsvgelement.deselectall() deprecated not yet deprecated (bug 1302705) <switch> not affecting <style> implementation status unknown requiredfeatures attribute removed implementation status unknown svgsvgelement.currentview and svgsvgelement.usecurrentview removed svgsvgelement.currentview was never implemented, svgsvgelement.usecurrentview not removed yet (bug 1174097) svgunknownelement not implemented (bug 1239218) l...
...And 5 more matches

Archived JavaScript Reference - Archive of obsolete content
however, this api has been deprecated and removed from browsers.
... you can use the more general proxy object instead.array.unobserve()the array.unobserve() method was used to remove observers set by array.observe(), but has been deprecated and removed from browsers.
...do not use it!handler.enumerate()the handler.enumerate() method used to be a trap for for...in statements, but has been removed from the ecmascript standard in es2016 and is deprecated in browsers.legacy generator functionthe legacy generator function statement declares legacy generator functions with the specified parameters.legacy generator function expressionthe function keyword can be used to define a legacy generator function inside an expression.
...And 4 more matches

sslfnc.html
ssl initialization functions ssl export policy functions ssl configuration functions ssl communication functions ssl functions used by callbacks ssl handshake functions nss shutdown function deprecated functions ssl initialization functions this section describes the initialization functions that are specific to ssl.
... ssl_optionsetdefault replaces the deprecated function ssl_enabledefault.
... warning: using the external array ssl_implementedciphers[] directly is deprecated.
...And 4 more matches

FileSystemEntry - Web APIs
50opera android no support nosafari ios full support 11.3samsung internet android full support yesprefixed full support yesprefixed prefixed implemented with the vendor prefix: webkitcopyto experimentaldeprecatednon-standardchrome full support 8edge full support 79firefox no support noie no support noopera no support nosafari no support now...
... android full support 18firefox android full support 50opera android no support nosafari ios full support 11.3samsung internet android full support yesgetmetadata experimentaldeprecatednon-standardchrome full support 8edge full support 79firefox no support noie no support noopera no support nosafari no support now...
...hrome android full support 18firefox android full support 50opera android no support nosafari ios full support 11.3samsung internet android full support yesmoveto experimentaldeprecatednon-standardchrome full support 8edge full support 79firefox no support noie no support noopera no support nosafari no support now...
...And 4 more matches

PushRegistrationManager - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetpushregistrationmanager experimentaldeprecatedchrome no support noedge no support nofirefox ?
... samsung internet android no support nogetregistration experimentaldeprecatedchrome no support noedge no support nofirefox ?
... samsung internet android no support nohaspermission experimentaldeprecatedchrome no support noedge no support nofirefox ?
...And 4 more matches

package.json - Archive of obsolete content
note: this is deprecated along with cfx; it's not available when using jpm.
... firefox: firefox desktop fennec: firefox for android thunderbird: thunderbird seamonkey: seamonkey any application uuid example: "engines": { "firefox": ">= 38.0a1", "fennec": ">= 38.0a1" } fullname note: this is deprecated along with cfx; it's not available when using jpm.
... harnessclassid note: this is deprecated along with cfx; it's not available when using jpm.
...And 3 more matches

Index - Archive of obsolete content
2 &lt;statusbarpanel&gt; deprecated, xul, xul elements, xul reference an individual element of a statusbar.
... 312 reserved dom, deprecated, events no summary!
... 350 statustext deprecated, xul attributes, xul reference no summary!
...And 3 more matches

NSS functions
keywords: deprecated - function should no longer be used.
... 3.2 and later ssl_revealurl mxr 3.2 and later ssl_securitystatus mxr 3.2 and later ssl_setmaxservercachelocks mxr 3.4 and later ssl_setpkcs11pinarg mxr 3.2 and later ssl_setsockpeerid mxr 3.2 and later ssl_seturl mxr 3.2 and later ssl_shutdownserversessionidcache mxr 3.7.4 and later deprecated ssl functions the following ssl functions have been replaced with newer versions.
... the deprecated functions are not supported by the new ssl shared libraries.
...And 3 more matches

BudgetService - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetbudgetservice experimentaldeprecatednon-standardchrome full support 55edge full support ≤79firefox ?
... samsung internet android full support 6.0getbudget experimentaldeprecatednon-standardchrome full support 55edge full support ≤79firefox ?
... samsung internet android full support 6.0getcost experimentaldeprecatednon-standardchrome full support 55edge full support ≤79firefox ?
...And 3 more matches

KeyboardEvent - Web APIs
this is now deprecated.
... warning: this attribute is deprecated; you should use keyboardevent.key instead, if available.
... warning: this attribute is deprecated; you should use keyboardevent.key instead, if available.
...And 3 more matches

UIEvent.initUIEvent() - Web APIs
do not use this method anymore as it is deprecated.
... obsolete from document object model (dom) level 2 events specification, deprecated.
... desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetinituievent deprecatednon-standardchrome full support yesedge full support 12firefox full support yesie ?
...And 3 more matches

writing-mode - CSS: Cascading Style Sheets
lr deprecated except for svg1 documents.
... lr-tb deprecated except for svg1 documents.
... rl deprecated except for svg1 documents.
...And 3 more matches

SVG Presentation Attributes - SVG: Scalable Vector Graphics
value: auto|baseline|super|sub|<percentage>|<length>|inherit; animatable: yes clip deprecated it defines what portion of an element is visible.
... value: auto|srgb|linearrgb|inherit; animatable: yes color-profile deprecated since svg 2 it defines which color profile a raster image included through the <image> element should use.
... value: auto|text-bottom|alphabetic|ideographic|middle|central| mathematical|hanging|text-top; animatable: yes enable-background deprecated since svg 2 it tells the browser how to manage the accumulation of the background image.
...And 3 more matches

Updating addons broken by private browsing changes - Archive of obsolete content
nsidownloadmanager/nsidownload: integer download ids (and specifically the id property of nsidownload) are deprecated, and don't allow access to private downloads.
... nsidownload now has retry, cancel, remove, pause, and resume methods which should be used instead of deprecated similarly-named nsidownloadmanager methods.
... nsidownload's getdownload method is deprecated; use the asynchronous getdownloadbyguid method instead.
...And 2 more matches

Reference - Archive of obsolete content
i also support the use of a deprecated pre box with these examples.
...thanks :) -- dria deprecated pre box is there any wiki markup available for deprecated examples?
... --maian 20:24, 25 aug 2005 (pdt) help:custom_templates#template:deprecated_header --nickolay 00:58, 26 aug 2005 (pdt) hmm, that was a bad question.
...And 2 more matches

nsIJSON
void encodetostream(in nsioutputstream stream, in string charset, in boolean writebom, in jsobject value); jsval legacydecode(in astring str); deprecated since gecko 2.0 jsval legacydecodefromstream(in astring str); deprecated since gecko 2.0 jsval legacydecodetojsval(in astring str, in jscontext cx); native code only!
... deprecated since gecko 2.0 methods decode() obsolete since gecko 7.0 (firefox 7.0 / thunderbird 7.0 / seamonkey 2.4) decodes a json string, returning the javascript object it represents.
... thus, this deprecated method should not be used.
...And 2 more matches

BudgetState - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetbudgetstate experimentaldeprecatednon-standardchrome full support 60edge full support ≤79firefox ?
... samsung internet android full support 8.0budgetat experimentaldeprecatednon-standardchrome full support 60edge full support ≤79firefox ?
... samsung internet android full support 8.0time experimentaldeprecatednon-standardchrome full support 60edge full support ≤79firefox ?
...And 2 more matches

Event.initEvent() - Web APIs
do not use this method anymore as it is deprecated.
... living standard from document object model (dom) level 2 events specification, deprecated it, superseded by event constructors.
... desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetinitevent deprecatedchrome full support yesedge full support 12firefox full support 17 full support 17 no support ?
...And 2 more matches

PasswordCredential - Web APIs
samsung internet android full support 5.0additionaldata experimentaldeprecatedchrome full support 51edge full support ≤79firefox ?
... samsung internet android full support 6.0idname experimentaldeprecatedchrome full support 51edge full support ≤79firefox ?
... samsung internet android full support 8.0passwordname experimentaldeprecatedchrome full support 51edge full support ≤79firefox ?
...And 2 more matches

RTCPeerConnection.setLocalDescription() - Web APIs
they're interchangeable: mypeerconnection.createoffer().then(function(offer) { return mypeerconnection.setlocaldescription(offer); }); this is equivalent to: mypeerconnection.createoffer().then(function(offer) { return mypeerconnection.setlocaldescription(new rtcsessiondescription(offer)); }); for this reason, the rtcsessiondescription() constructor is deprecated.
... deprecated parameters in older code and documentation, you may see a callback-based version of this function used.
... this has been deprecated and its use is strongly discouraged, as it will be removed in the future.
...And 2 more matches

RTCPeerConnection.setRemoteDescription() - Web APIs
description(description)) .then(function () { return createmystream(); }) to simply be: mypeerconnection.setremotedescription(description) .then(function () { return createmystream(); }) using async/await syntax, you can further simplify this to: await mypeerconnection.setremotedescription(description); createmystream(); since it's unnecessary, the rtcsessiondescription() constructor is deprecated.
... deprecated syntax in older code and documentation, you may see a callback-based version of this function used.
... this has been deprecated and its use is strongly discouraged.
...And 2 more matches

<shape> - CSS: Cascading Style Sheets
note: <shape> and rect() work in conjunction with clip, which has been deprecated in favor of clip-path.
... desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internet<shape> deprecatedchrome full support 1edge full support 12firefox full support 1ie full support 5.5opera full support 9.5safari full support 1.3web...
... 37chrome android full support 18firefox android full support 4opera android full support 14safari ios full support 1samsung internet android full support 1.0rect() deprecatedchrome full support 1edge full support 12firefox full support 1ie full support 5.5notes full support 5.5notes notes for internet explorer versions 5.5 through 7, the rect() f...
...And 2 more matches

Index - HTTP
31 csp: child-src csp, directive, http, reference, security the deprecated http content-security-policy (csp) child-src directive defines the valid sources for web workers and nested browsing contexts loaded using elements such as <frame> and <iframe>.
...this api is deprecated and removed from browsers.
... 44 csp: report-uri csp, directive, http, reference, security the deprecated http content-security-policy (csp) report-uri directive instructs the user agent to report attempts to violate the content security policy.
...And 2 more matches

util/deprecate - Archive of obsolete content
globals functions deprecatefunction(fun, msg) dump to the console the error message given in the second argument, prefixed with "deprecated:", and print the stacktrace; then execute the function passed as first argument and returns its value.
... this function is mostly used to flag usage of deprecated functions, that are still available but which we intend to remove in a future release.
... parameters fun : function the function to execute after the error message msg : string the error message to display returns * : the returned value from fun deprecateusage(msg) dump to the console the error message given, prefixed with "deprecated:", and print the stacktrace.
... this function is mostly used to flag usage of deprecated functions that are no longer available.

What is RSS - Archive of obsolete content
(although rdf-based rss formats exist, namely the deprecated rss 0.90 and rss 1.0.) common uses of rss syndication are for the syndication of news web sites, of blogs, of internet radio, and of internet television.
... so at this point netscape deprecated the rdf-based rss 0.90 and told everyone to use netscape's rss 0.91, which was xml-based.
...this version of rss was no longer purely xml-based, but was rdf-based (like the original and now deprecated rss 0.90).
... so now, at this point, we still have netscape's rss 0.91 (since netscape never deprecated it) although most people don't use it anymore.

Attr - Web APIs
ht="50" fill="#f4f7f8" stroke="#d4dde4" stroke-width="2px" /><text x="303.5" y="30" font-size="12px" font-family="consolas,monaco,andale mono,monospace" fill="#4d4e53" text-anchor="middle" alignment-baseline="middle">attr</text></a></svg></div> a:hover text { fill: #0095dd; pointer-events: all;} warning: starting in gecko 7.0 (firefox 7.0 / thunderbird 7.0 / seamonkey 2.4), a number of deprecated properties and methods output warning messages to the console.
...see deprecated properties and methods for a complete list.
... deprecated properties and methods the following properties have been deprecated.
... the following methods have been deprecated: appendchild() obsolete since gecko 14 modify the value of attr.value instead.

FileReaderSync - Web APIs
this method is deprecated, consider using readasarraybuffer() instead.
...ndroid full support yesfirefox android full support 8opera android full support yessafari ios full support yessamsung internet android full support yesservice workers support deprecatednon-standardchrome no support ?
...expect poor cross-browser support.deprecated.
... not for use in new websites.deprecated.

FileSystemDirectoryReader - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetfilesystemdirectoryreader deprecatednon-standardchrome full support 8alternate name full support 8alternate name alternate name uses the non-standard name: directoryreaderedge full support ≤18alternate name full support ≤18alternate name alternate na...
... 50opera android no support nosafari ios full support 11.3samsung internet android full support yesprefixed full support yesprefixed prefixed implemented with the vendor prefix: webkitreadentries deprecatednon-standardchrome full support 8edge ?
...expect poor cross-browser support.deprecated.
... not for use in new websites.deprecated.

IDBEnvironment - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetidbenvironment deprecatednon-standardchrome full support 24 full support 24 no support 23 — 57prefixed prefixed implemented with the vendor prefix: webkitedge full support 12firefox full support 16 ful...
...rome android full support 25firefox android full support 22opera android full support 14safari ios full support 8samsung internet android full support 1.5available in workers deprecatednon-standardchrome full support yesedge full support ≤18firefox full support 37ie ?
...expect poor cross-browser support.deprecated.
... not for use in new websites.deprecated.

IDBVersionChangeRequest - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetidbversionchangerequest deprecatednon-standardchrome no support 12 — 23prefixed no support 12 — 23prefixed prefixed implemented with the vendor prefix: webkitedge ?
... nochrome android no support nofirefox android no support noopera android no support nosafari ios no support nosamsung internet android no support nosetversion deprecatednon-standardchrome no support noedge no support nofirefox no support noie no support noopera no support nosafari no support nowebv...
...expect poor cross-browser support.deprecated.
... not for use in new websites.deprecated.

Reporting API - Web APIs
deprecated feature usage (when you are using something that will stop working soon in browsers).
... examples in our deprecation_report.html example, we create a simple reporting observer to observe usage of deprecated features on our web page: let options = { types: ['deprecation'], buffered: true } let observer = new reportingobserver(function(reports, observer) { reportbtn.onclick = () => displayreports(reports); }, options); we then tell it to start observing reports using reportingobserver.observe(); this tells the observer to start collecting reports in its report queue, and runs the callback fun...
...ction specified inside the constructor: observer.observe(); later on in the example we deliberately use the deprecated version of mediadevices.getusermedia(): if(navigator.mozgetusermedia) { navigator.mozgetusermedia( constraints, success, failure); } else { navigator.getusermedia( constraints, success, failure); } this causes a deprecation report to be generated; because of the event handler we set up inside the reportingobserver() constructor, we can now click the button to display the report details.
... note: if you look at the complete source code, you'll notice that we actually call the deprecated getusermedia() method twice.

SVGURIReference - Web APIs
the svgurireference interface is used to reflect the href attribute and the deprecated xlink:href attribute.
...-size="12px" font-family="consolas,monaco,andale mono,monospace" fill="#4d4e53" text-anchor="middle" alignment-baseline="middle">svgurireference</text></a></svg></div> a:hover text { fill: #0095dd; pointer-events: all;} properties svgurireference.href read only an svganimatedstring that represents the value of the href attribute, and, on elements that are defined to support it, the deprecated xlink:href attribute.
... on getting href, an svganimatedstring object is returned that reflects the href attribute, and if the element is defined to support the deprecated xlink:href attribute, additionally reflects that deprecated attribute.
... candidate recommendation replaced the deprecated xlink:href attribute reference by the href attribute and made the prior only be reflected where it's defined to be supported.

Window - Web APIs
(this does not yet appear to be implemented in any browser.) deprecated properties window.content and window._content read only returns a reference to the content element in the current window.
... deprecated methods window.back() moves back one in the window history.
... this method is deprecated; you should instead use window.history.back().
...this method is deprecated; you should instead use window.history.forward().

@media - CSS: Cascading Style Sheets
deprecated media types: css2.1 and media queries 3 defined several additional media types (tty, tv, projection, handheld, braille, embossed, and aural), but they were deprecated in media queries 4 and shouldn't be used.
... color-index number of entries in the output device's color lookup table, or zero if the device does not use such a table device-aspect-ratio width-to-height aspect ratio of the output device deprecated in media queries level 4.
... device-height height of the rendering surface of the output device deprecated in media queries level 4.
... device-width width of the rendering surface of the output device deprecated in media queries level 4.

Using media queries - CSS: Cascading Style Sheets
deprecated media types: css2.1 and media queries 3 defined several additional media types (tty, tv, projection, handheld, braille, embossed, and aural), but they were deprecated in media queries 4 and shouldn't be used.
... color-index number of entries in the output device's color lookup table, or zero if the device does not use such a table device-aspect-ratio width-to-height aspect ratio of the output device deprecated in media queries level 4.
... device-height height of the rendering surface of the output device deprecated in media queries level 4.
... device-width width of the rendering surface of the output device deprecated in media queries level 4.

<listing> - HTML: Hypertext Markup Language
it is deprecated since html 3.2 and was neither implemented by all browsers, nor in a consistent way.
... desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetlisting deprecatedchrome no support noedge no support nofirefox no support nonotes no support nonotes notes before firefox 4, this element implemented the htmlspanelement interface instead of the standard htmlelement interface.ie ...
...ed the htmlspanelement interface instead of the standard htmlelement interface.opera android no support nosafari ios no support nosamsung internet android no support nolegend no support no supportdeprecated.
... not for use in new websites.deprecated.

<tbody>: The Table Body element - HTML: Hypertext Markup Language
deprecated attributes align this enumerated attribute specifies how horizontal alignment of each cell content will be handled.
... as this attribute is deprecated, use the css text-align property instead.
... as this attribute is deprecated, use the css background-color property instead.
... as this attribute is deprecated, use the css vertical-align property instead.

<tfoot>: The Table Foot element - HTML: Hypertext Markup Language
deprecated attributes align deprecated since html4obsolete since html5 this enumerated attribute specifies how horizontal alignment of each cell content will be handled.
... char deprecated since html4obsolete since html5 this attribute is used to set the character to align the cells in a column on.
... charoff deprecated since html4obsolete since html5 this attribute is used to indicate the number of characters to offset the column data from the alignment characters specified by the char attribute.
... valign deprecated since html4obsolete since html5 this attribute specifies the vertical alignment of the text within each row of cells of the table header.

HTTP Index - HTTP
this api is deprecated and removed from browsers.
... 95 csp: report-uri csp, directive, http, reference, security the deprecated http content-security-policy (csp) report-uri directive instructs the user agent to report attempts to violate the content security policy.
... 168 pragma caching, deprecated, http, header, request the pragma http/1.0 general header is an implementation-specific header that may have various effects along the request-response chain.
... 182 set-cookie2 cookies, http, obsolete, reference, header the obsolete set-cookie2 http response header used to send cookies from the server to the user agent, but has been deprecated by the specification.

JavaScript error reference - JavaScript
ngeerror: invalid array lengthrangeerror: invalid daterangeerror: precision is out of rangerangeerror: radix must be an integerrangeerror: repeat count must be less than infinityrangeerror: repeat count must be non-negativereferenceerror: "x" is not definedreferenceerror: assignment to undeclared variable "x"referenceerror: can't access lexical declaration "x" before initializationreferenceerror: deprecated caller or arguments usagereferenceerror: invalid assignment left-hand sidereferenceerror: reference to undefined property "x"syntaxerror: "0"-prefixed octal literals and octal escape seq.
... are deprecatedsyntaxerror: "use strict" not allowed in function with non-simple parameterssyntaxerror: "x" is a reserved identifiersyntaxerror: json.parse: bad parsingsyntaxerror: malformed formal parametersyntaxerror: unexpected tokensyntaxerror: using //@ to indicate sourceurl pragmas is deprecated.
... use //# insteadsyntaxerror: a declaration in the head of a for-of loop can't have an initializersyntaxerror: applying the "delete" operator to an unqualified name is deprecatedsyntaxerror: for-in loop head declarations may not have initializerssyntaxerror: function statement requires a namesyntaxerror: identifier starts immediately after numeric literalsyntaxerror: illegal charactersyntaxerror: invalid regular expression flag "x"syntaxerror: missing ) after argument listsyntaxerror: missing ) after conditionsyntaxerror: missing : after property idsyntaxerror: missing ; before statementsyntaxerror: missing = in const declarationsyntaxerror: missing ] after element listsyntaxerror: missing formal parametersyntaxerror: missing name after .
...entstypeerror: invalid assignment to const "x"typeerror: property "x" is non-configurable and can't be deletedtypeerror: setting getter-only property "x"typeerror: variable "x" redeclares argumenturierror: malformed uri sequencewarning: 08/09 is not a legal ecma-262 octal constantwarning: -file- is being assigned a //# sourcemappingurl, but already has onewarning: date.prototype.tolocaleformat is deprecatedwarning: javascript 1.6's for-each-in loops are deprecatedwarning: string.x is deprecated; use string.prototype.x insteadwarning: expression closures are deprecatedwarning: unreachable code after return statement ...

<mfrac> - MathML
this attribute is deprecated and will be removed in the future.
... this attribute is deprecated and will be removed in the future.
... the values medium, thin, and thick are deprecated and will be removed in the future.
... this attribute is deprecated and will be removed in the future.

Navigation and resource timings - Web Performance
the general performance timings below have been deprecated in favor of the performance entry api, which provides for marking and measuring times along the navigation and resource loading process.
... while deprecated, they are supported in all browsers.
... performance timings the performancetiming api, a javascript api for measuring the loading performance of the requested page, is deprecated but supported in all browsers.
... ssl = time.requeststart - time.secureconnectionstart; performance entry api the general performance timings above are deprecated but fully supported.

<svg> - SVG: Scalable Vector Graphics
html,body,svg { height:100% } <svg viewbox="0 0 300 100" xmlns="http://www.w3.org/2000/svg" stroke="red" fill="grey"> <circle cx="50" cy="50" r="40" /> <circle cx="150" cy="50" r="4" /> <svg viewbox="0 0 10 10" x="200" width="100"> <circle cx="5" cy="5" r="4" /> </svg> </svg> attributes baseprofile deprecated since svg 2 the minimum svg language profile that the document requires.
... value type: <string> ; default value: none; animatable: no contentscripttype deprecated since svg 2 the default scripting language used by the svg fragment.
... value type: <string> ; default value: application/ecmascript; animatable: no contentstyletype deprecated since svg 2 the default style sheet language used by the svg fragment.
...; default value: xmidymid meet; animatable: yes version deprecated since svg 2 which version of svg is used for the inner content of the element.

attribute.align - Archive of obsolete content
left: (deprecated) the elements are aligned on their left edges.
... center: (deprecated) the elements are centered horizontally.
... right: (deprecated) the elements are aligned on their right edges.

textbox - Archive of obsolete content
emptytext deprecated since gecko 2 type: string a string that appears in the textbox when it has no value.
...the timed type is deprecated in gecko 1.9.1 and the search textbox may be used instead.
... emptytext deprecated since gecko 2 type: string gets and sets a string that appears in the textbox when it has no value.

0.90 - Archive of obsolete content
(see rss - what is in a name for more info on rss's naming history.) note: rss 0.90 has been deprecated.
... producers of rssshould not be creating rss 0.90 feeds, andshould instead use a newer non-deprecated rss format.
... (see the rss versions list for a list of non-deprecated rss formats.) consumers of rssshould still be able to accept rss 0.90 feeds though.

Summary of Changes - Archive of obsolete content
proprietary or deprecated feature w3c feature or recommended replacement deprecated font html 4.01 span plus css1 color: ; font-family: ; font-size: ; deprecated center or align="center" css1 text-align: center; for in-line elements like text or image deprecated center or align="center" css1 margin-left: auto; margin-right: auto; for block-level elements deprecated bgcolor css1 background-color: ; non-standard embed html 4.01 object deprecated applet html 4.01 object non-standard marquee html 4.01 div plus scripting ...
... non-standard bgsound html 4.01 object proprietary or deprecated feature w3c feature or recommended replacement ie5+ id_attribute_value document.all.id_attribute_value document.all[id_attribute_value] dom level 2: document.getelementbyid(id_attribute_value) ie5+ formname.inputname.value dom level 1: document.forms["formname"].inputname.value ie5+ inputname.value dom level 1: document.forms["formname"].inputname.value ie5+ formctrlname dom level 1: document.forms["formname"].formctrlname ie5+ document.forms(0) dom level 1: document.forms[0] ie elemref.innertext dom level 1 (core) interface we could introduce dom 3 core textcontent attribute here which is suppo...
...http://www.w3.org/tr/2004/rec-dom-le...e3-textcontent ie5+ elemref.style.pixeltop dom level 2: parseint(elemref.style.top, 10) ie5+ elemref.style.pixelleft = x; elemref.style.pixeltop = y; dom level 2: elemref.style.left = x + "px"; elemref.style.top = y + "px"; ie5+ new activexobject("microsoft.xmlhttp") new xmlhttprequest() proprietary or deprecated feature w3c feature or recommended replacement ...

NSS 3.53 release notes
(bug 290526) seed is now moved into a new freebl directory freebl/deprecated (bug 1636389).
... algorithms marked as deprecated will ultimately be removed.
...vsx vector instructions bug 1639033 - fix various compile warnings in nss bug 1640041 - fix a null pointer in security/nss/lib/ssl/sslencode.c:67 bug 1640042 - fix a null pointer in security/nss/lib/ssl/sslsock.c:4460 bug 1638289 - avoid multiple definitions of sha{256,384,512}_* symbols when linking libfreeblpriv3.so in firefox on ppc64le bug 1636389 - relocate deprecated seed algorithm bug 1637083 - lib/ckfw: no such file or directory.

Utility functions
function name/documentation source code nss versions atob_asciitodata mxr deprecated 3.2 use nssbase64_decodebuffer atob_convertasciitoitem mxr deprecated 3.2 use nssbase64_decodebuffer btoa_convertitemtoascii mxr deprecated 3.2 use nssbase64_encodeitem btoa_datatoascii mxr deprecated 3.2 use nssbase64_encodeitem der_asciitotime mxr 3.5 and later der_dec...
... sgn_destroydigestinfo mxr 3.2 and later sgn_digest mxr 3.2 and later sgn_end mxr 3.2 and later sgn_newcontext mxr 3.2 and later sgn_update mxr 3.2 and later vfy_begin mxr 3.2 and later vfy_createcontext mxr deprecated 3.12 use vfy_createcontextdirect or vfy_createcontextwithalgorithmid vfy_createcontextdirect mxr 3.12 and later vfy_createcontextwithalgorithmid mxr 3.12 and later vfy_destroycontext mxr 3.2 and later vfy_end mxr 3.2 and later vfy_update mxr 3.2 and later ...
... vfy_verifydata mxr deprecated 3.12 use vfy_verifydatadirect or vfy_verifydatawithalgorithmid vfy_verifydatadirect mxr 3.12 and later vfy_datawithalgorithmid mxr 3.12 and later vfy_verifydigest mxr deprecated 3.12 use vfy_verifydigestdirect or vfy_verifydigestwithalgorithmid vfy_verifydigestdirect mxr 3.12 and later vfy_verifydigestwithalgorithmid mxr 3.12 and later ...

JS::Value
the now-deprecated jsval methods allowed jsval_to_object(val) when jsval_is_null(val), but this was a source of constant bugs.
... jsval is deprecated; new code should use js::value.
... the old jsval_is_* methods, jsval_* constants and *_to_jsval methods, and jsval_to_* methods are also deprecated; uses of each should be replaced with use of the corresponding val.is*(), *value(), and val.to*() methods.

nsIDOMProgressEvent
1.0 66 introduced gecko 1.9.1 deprecated gecko 22 inherits from: nsidomevent last changed in gecko 1.9.1 (firefox 3.5 / thunderbird 3.0 / seamonkey 2.0) the nsidomprogressevent is used in the media elements (<video> and <audio>) to inform interested code of the progress of the media download.
... method overview void initprogressevent(in domstring typearg, in boolean canbubblearg, in boolean cancelablearg, in boolean lengthcomputablearg, in unsigned long long loadedarg, in unsigned long long totalarg); deprecated since gecko 22.0 attributes attribute type description lengthcomputable boolean specifies whether or not the total size of the transfer is known.
... methods initprogressevent() deprecated since gecko 22.0 this method has been removed from use in javascript in gecko 22.0.

nsINavHistoryResultObserver
method overview void batching(in boolean atogglemode); void containerclosed(in nsinavhistorycontainerresultnode acontainernode); deprecated since gecko 2.0 obsolete since gecko 11.0 void containeropened(in nsinavhistorycontainerresultnode acontainernode); deprecated since gecko 2.0 obsolete since gecko 11.0 void containerstatechanged(in nsinavhistorycontainerresultnode acontainernode, in unsigned long aoldstate, in unsigned long anewstate); void invalidatecontainer(in nsinavhistorycontainerresultnode acontainernode); void nod...
...note: this method was deprecated in gecko 2.0 and removed in gecko 11.0 (firefox 11.0 / thunderbird 11.0 / seamonkey 2.8).
...note: this method was deprecated in gecko 2.0 and removed in gecko 11.0 (firefox 11.0 / thunderbird 11.0 / seamonkey 2.8).

Standard OS Libraries
in gdk 3.0 the gdk_window_get_device_position function was deprecated, see below for gdk 3.0 example.
...tructtype('gdkwindow'); var void = ctypes.void_t; // https://developer.gnome.org/gdk3/stable/gdk3-windows.html#gdk-get-default-root-window var gdk_get_default_root_window = gdk.declare('gdk_get_default_root_window', ctypes.default_abi, gdkwindow.ptr // return - the root window, which is top most parent of all windows ); // in gdk2 we have to use gdk_window_get_pointer, but in gdk3 it was deprecated and have to use gdk_window_get_device_position https://developer.gnome.org/gdk3/stable/gdk3-windows.html#gdk-window-get-pointer var gdk_window_get_pointer = gdk.declare('gdk_window_get_pointer', ctypes.default_abi, gdkwindow.ptr, // return - the window containing the pointer (as with gdk_window_at_pointer()), or null if the window containing the pointer isn’t known to gdk.
...; var gdkwindow = ctypes.structtype('gdkwindow'); // https://developer.gnome.org/gdk3/stable/gdk3-windows.html#gdk-get-default-root-window var gdk_get_default_root_window = gdk.declare('gdk_get_default_root_window', ctypes.default_abi, gdkwindow.ptr // return - the root window, which is top most parent of all windows ); // in gdk2 we have to use gdk_window_get_pointer, but in gdk3 it was deprecated and have to use gdk_window_get_device_position // https://developer.gnome.org/gdk3/stable/gdk3-windows.html#gdk-window-get-device-position var gdk_window_get_device_position = gdk3.declare('gdk_window_get_device_position', ctypes.default_abi, gdkwindow.ptr, // return - the window underneath device or null if the window is not known to gdk gdkwindow.ptr, // window gdkdevi...

BudgetService.getBudget() - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetgetbudget experimentaldeprecatednon-standardchrome full support 55edge full support ≤79firefox ?
...expect poor cross-browser support.deprecated.
... not for use in new websites.deprecated.

BudgetService.getCost() - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetgetcost experimentaldeprecatednon-standardchrome full support 55edge full support ≤79firefox ?
...expect poor cross-browser support.deprecated.
... not for use in new websites.deprecated.

BudgetService.reserve() - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetreserve experimentaldeprecatednon-standardchrome full support 55edge full support ≤79firefox ?
...expect poor cross-browser support.deprecated.
... not for use in new websites.deprecated.

BudgetState.budgetAt - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetbudgetat experimentaldeprecatednon-standardchrome full support 60edge full support ≤79firefox ?
...expect poor cross-browser support.deprecated.
... not for use in new websites.deprecated.

BudgetState.time - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internettime experimentaldeprecatednon-standardchrome full support 60edge full support ≤79firefox ?
...expect poor cross-browser support.deprecated.
... not for use in new websites.deprecated.

Document.bgColor - Web APIs
the deprecated bgcolor property gets or sets the background color of the current document.
... document.bgcolor is deprecated in dom level 2 html.
...another alternative is document.body.bgcolor, although this is also deprecated in html 4.01 in favor of the css alternative.

Document.linkColor - Web APIs
this property is deprecated.
...another alternative is document.body.link, although this is deprecated in html 4.01.
... example document.linkcolor = 'blue'; specification html5 document.linkcolor is deprecated in dom level 2 html.

FileException - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetfileexception deprecatednon-standardchrome no support 13 — 29prefixed no support 13 — 29prefixed prefixed implemented with the vendor prefix: webkitedge no support nofirefox no support noie no support noopera no supp...
...expect poor cross-browser support.deprecated.
... not for use in new websites.deprecated.

FileSystemDirectoryEntry.removeRecursively() - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetremoverecursively deprecatednon-standardchrome full support 8edge full support 79firefox no support 50 — 52notes no support 50 — 52notes notes while the removerecursively() method existed, it immediately called the error callback with ns_error_dom_security_err.ie n...
...expect poor cross-browser support.deprecated.
... not for use in new websites.deprecated.

FileSystemDirectoryEntry - Web APIs
ll support 50notes notes in firefox, the errorcallback's input parameter is a domexception rather than a fileerror object.opera android no support nosafari ios full support 11.3samsung internet android full support yesremoverecursively deprecatednon-standardchrome full support 8edge full support 79firefox no support 50 — 52notes no support 50 — 52notes notes while the removerecursively() method existed, it immediately called the error callback with ns_error_dom_security_err.ie n...
...expect poor cross-browser support.deprecated.
... not for use in new websites.deprecated.

FileSystemDirectoryReader.readEntries() - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetreadentries deprecatednon-standardchrome full support 8edge ?
...expect poor cross-browser support.deprecated.
... not for use in new websites.deprecated.

FileSystemEntry.copyTo() - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetcopyto experimentaldeprecatednon-standardchrome full support 8edge full support 79firefox no support noie no support noopera no support nosafari no support now...
...expect poor cross-browser support.deprecated.
... not for use in new websites.deprecated.

FileSystemEntry.getMetadata() - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetgetmetadata experimentaldeprecatednon-standardchrome full support 8edge full support 79firefox no support noie no support noopera no support nosafari no support now...
...expect poor cross-browser support.deprecated.
... not for use in new websites.deprecated.

FileSystemEntry.moveTo() - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetmoveto experimentaldeprecatednon-standardchrome full support 8edge full support 79firefox no support noie no support noopera no support nosafari no support now...
...expect poor cross-browser support.deprecated.
... not for use in new websites.deprecated.

FileSystemEntry.remove() - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetremove experimentaldeprecatednon-standardchrome full support 8edge full support 79firefox no support noie no support noopera no support nosafari no support now...
...expect poor cross-browser support.deprecated.
... not for use in new websites.deprecated.

FileSystemEntry.toURL() - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internettourl experimentaldeprecatednon-standardchrome full support 8edge full support 79firefox no support noie no support noopera no support nosafari no support now...
...expect poor cross-browser support.deprecated.
... not for use in new websites.deprecated.

FileSystemFileEntry.createWriter() - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetcreatewriter deprecatednon-standardchrome full support 8edge full support 79firefox no support 50 — 52notes no support 50 — 52notes notes while the createwriter() method existed, it immediately called errorcallback with the ns_error_dom_security_err error.ie n...
...expect poor cross-browser support.deprecated.
... not for use in new websites.deprecated.

FileSystemFileEntry - Web APIs
50opera android no support nosafari ios full support 11.3samsung internet android full support yesprefixed full support yesprefixed prefixed implemented with the vendor prefix: webkitcreatewriter deprecatednon-standardchrome full support 8edge full support 79firefox no support 50 — 52notes no support 50 — 52notes notes while the createwriter() method existed, it immediately called errorcallback with the ns_error_dom_security_err error.ie n...
...expect poor cross-browser support.deprecated.
... not for use in new websites.deprecated.

Guide to the Fullscreen API - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetfullscreen deprecatedchrome full support 71 full support 71 full support 15alternate name alternate name uses the non-standard name: webkitisfullscreenedge full support ≤79 full support ≤79 ...
... 10.0 full support 10.0 full support 1.0alternate name alternate name uses the non-standard name: webkitisfullscreenlegend full support full support no support no supportdeprecated.
... not for use in new websites.deprecated.

Fullscreen API - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetfullscreen deprecatedchrome full support 71 full support 71 full support 15alternate name alternate name uses the non-standard name: webkitisfullscreenedge full support ≤79 full support ≤79 ...
... 10.0 full support 10.0 full support 1.0alternate name alternate name uses the non-standard name: webkitisfullscreenlegend full support full support no support no supportdeprecated.
... not for use in new websites.deprecated.

IDBDatabaseException - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetidbdatabaseexception deprecatednon-standardchrome full support 12prefixed full support 12prefixed prefixed implemented with the vendor prefix: webkitedge full support ≤79prefixed full support ≤79prefixed prefixed implemented with the vendor pref...
...expect poor cross-browser support.deprecated.
... not for use in new websites.deprecated.

IDBVersionChangeEvent.version - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetversion deprecatednon-standardchrome full support 12edge full support ≤18firefox full support 16 full support 16 full support 10prefixed prefixed implemented with the vendor prefix: mozie ...
...expect poor cross-browser support.deprecated.
... not for use in new websites.deprecated.

IDBVersionChangeRequest.setVersion() - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetsetversion deprecatednon-standardchrome no support noedge no support nofirefox no support noie no support noopera no support nosafari no support nowebv...
...expect poor cross-browser support.deprecated.
... not for use in new websites.deprecated.

KeyboardEvent() - Web APIs
"charcode", optional and defaulting to 0, of type unsigned long, that sets the value of the deprecated keyboardevent.charcode.
... "keycode", optional and defaulting to 0, of type unsigned long, that sets the value of the deprecated keyboardevent.keycode.
... "which", optional and defaulting to 0, of type unsigned long, that sets the value of the deprecated keyboardevent.which.

KeyboardEvent.keyCode - Web APIs
the deprecated keyboardevent.keycode read-only property represents a system and implementation dependent numerical code identifying the unmodified value of the pressed key.
... you should avoid using this if possible; it's been deprecated for some time.
... obsolete initial definition; specified as deprecated ...

MediaRecorder.ignoreMutedMedia - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetignoremutedmedia deprecatednon-standardchrome no support 49 — 57edge no support nofirefox ?
...expect poor cross-browser support.deprecated.
... not for use in new websites.deprecated.

Navigator.getUserMedia() - Web APIs
the deprecated navigator.getusermedia() method prompts the user for permission to use up to one video input device (such as a camera or shared screen) and up to one audio input device (such as a microphone) as the source for a mediastream.
...while technically not deprecated, this old callback version is marked as such, since the specification strongly encourages using the newer promise returning version.
...note that this is the deprecated way of doing it: see the examples section under the mediadevices.getusermedia() for modern examples.

ReportingObserver - Web APIs
examples in our deprecation_report.html example, we create a simple reporting observer to observe usage of deprecated features on our web page: let options = { types: ['deprecation'], buffered: true } let observer = new reportingobserver(function(reports, observer) { reportbtn.onclick = () => displayreports(reports); }, options); we then tell it to start observing reports using reportingobserver.observe(); this tells the observer to start collecting reports in its report queue, and runs the callback fun...
...ction specified inside the constructor: observer.observe(); later on in the example we deliberately use the deprecated version of mediadevices.getusermedia(): if(navigator.mozgetusermedia) { navigator.mozgetusermedia( constraints, success, failure); } else { navigator.getusermedia( constraints, success, failure); } this causes a deprecation report to be generated; because of the event handler we set up inside the reportingobserver() constructor, we can now click the button to display the report details.
... note: if you look at the complete source code, you'll notice that we actually call the deprecated getusermedia() method twice.

Window.releaseEvents() - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetreleaseevents deprecatednon-standardchrome full support yesedge full support 12firefox full support yesie ?
...expect poor cross-browser support.deprecated.
... not for use in new websites.deprecated.

Window.routeEvent() - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetrouteevent deprecatednon-standardchrome no support noedge no support nofirefox no support noie ?
...expect poor cross-browser support.deprecated.
... not for use in new websites.deprecated.

Window.showModalDialog() - Web APIs
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetshowmodaldialog deprecatednon-standardchrome no support ?
...expect poor cross-browser support.deprecated.
... not for use in new websites.deprecated.

aural - CSS: Cascading Style Sheets
note: this media type has been deprecated in favor of speech.
... syntax the aural css media type—which has been deprecated in favor of the speech media type—was used to specify a block of css that applied only when the content is being presented using a speech synthesis device.
... deprecated initial definition.

box-align - CSS: Cascading Style Sheets
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetbox-align deprecatednon-standardchrome full support 1prefixed full support 1prefixed prefixed implemented with the vendor prefix: -webkit-edge full support 12prefixed full support 12prefixed prefixed implemented with the vendor prefix: -w...
...expect poor cross-browser support.deprecated.
... not for use in new websites.deprecated.

box-direction - CSS: Cascading Style Sheets
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetbox-direction deprecatednon-standardchrome full support 1prefixed full support 1prefixed prefixed implemented with the vendor prefix: -webkit-edge full support 12prefixed full support 12prefixed prefixed implemented with the vendor prefix: -w...
...expect poor cross-browser support.deprecated.
... not for use in new websites.deprecated.

<acronym> - HTML: Hypertext Markup Language
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetacronym deprecatednon-standardchrome full support yesedge full support 12firefox full support yesie full support yesopera full support yessafari full support ...
...expect poor cross-browser support.deprecated.
... not for use in new websites.deprecated.

<applet>: The Embed Java Applet element - HTML: Hypertext Markup Language
the obsolete html applet element (<applet>) embeds a java applet into the document; this element has been deprecated in favor of <object>.
... use of java applets on the web is deprecated; most browsers no longer support use of plug-ins, including the java plug-in.
... recommendation deprecated in favor of <object> ...

<content>: The Shadow DOM Content Placeholder element (obsolete) - HTML: Hypertext Markup Language
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetcontent deprecatednon-standardchrome full support 35edge full support 79firefox no support 33 — 59disabled no support 33 — 59disabled disabled from version 33 until version 59 (exclusive): this feature is behind the dom.webcomponents.enabled preference (needs to be set t...
...expect poor cross-browser support.deprecated.
... not for use in new websites.deprecated.

<element>: The Custom Element element (Obsolete) - HTML: Hypertext Markup Language
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetelement deprecatednon-standardchrome ?
...expect poor cross-browser support.deprecated.
... not for use in new websites.deprecated.

<li> - HTML: Hypertext Markup Language
note: this attribute was deprecated in html4, but reintroduced in html5.
... note: this attribute has been deprecated; use the css list-style-type property instead.
... recommendation the type attribute has been deprecated.

<textarea> - HTML: Hypertext Markup Language
the non-deprecated values are available in ios 5 and later.
... on: deprecated since ios 5.
... off: deprecated since ios 5.

<th> - HTML: Hypertext Markup Language
deprecated attributes align obsolete since html5 this enumerated attribute specifies how the cell content's horizontal alignment will be handled.
... height deprecated since html4, obsolete since html5 this attribute is used to define a recommended cell height.
... width deprecated since html4, obsolete since html5 this attribute is used to define a recommended cell width.

Functions - JavaScript
escape() the deprecated escape() method computes a new string in which certain characters have been replaced by a hexadecimal escape sequence.
... unescape() the deprecated unescape() method computes a new string in which hexadecimal escape sequences are replaced with the character that it represents.
...because unescape() is deprecated, use decodeuri() or decodeuricomponent instead.

MathML attribute reference - MathML
the attributes background, color, fontfamily, fontsize, fontstyle, fontweight and xlink:href are deprecated.
... the xlink attributes on mathml elements: xlink:actuate, xlink:href, xlink:show and xlink:type are deprecated as well.
...deprecated.

color-profile - SVG: Scalable Vector Graphics
desktopmobilechromeedgefirefoxinternet exploreroperasafariandroid webviewchrome for androidfirefox for androidopera for androidsafari on iossamsung internetcolor-profile deprecatedchrome ?
... legend compatibility unknown compatibility unknowndeprecated.
... not for use in new websites.deprecated.

dx - SVG: Scalable Vector Graphics
<line x1="10%" x2="10%" y1="0" y2="100%" /> <line x1="60%" x2="60%" y1="0" y2="100%" /> <!-- some reference text --> <text x="10%" y="50%" fill="grey">svg</text> <!-- the same text with a shift along the x-axis --> <text dx="50%" x="10%" y="50%">svg</text> </svg> line { stroke: red; stroke-width: .5px; stroke-dasharray: 3px; } altglyph warning: as of svg2 <altglyph> is deprecated and shouldn't be used.
... value <number> default value 0 animatable yes glyphref warning: as of svg2 <glyphref> is deprecated and shouldn't be used.
... <line x1="60%" x2="60%" y1="0" y2="100%" /> <!-- behaviors change based on the number of values in the attributes --> <text dx="20%" x="10%" y="25%">svg</text> <text dx="0 10%" x="10%" y="50%">svg</text> <text dx="0 10% 20%" x="10%" y="75%">svg</text> </svg> line { stroke: red; stroke-width: .5px; stroke-dasharray: 3px; } tref warning: as of svg2 <tref> is deprecated and shouldn't be used.

dy - SVG: Scalable Vector Graphics
ine x1="0" x2="100%" y1="30%" y2="30%" /> <line x1="0" x2="100%" y1="80%" y2="80%" /> <!-- some reference text --> <text x="10%" y="30%" fill="grey">svg</text> <!-- the same text with a shift along the y-axis --> <text dy="50%" x="10%" y="30%">svg</text> </svg> line { stroke: red; stroke-width: .5px; stroke-dasharray: 3px; } altglyph warning: as of svg2 <altglyph> is deprecated and shouldn't be used.
... value <number> default value 0 animatable yes glyphref warning: as of svg2 <glyphref> is deprecated and shouldn't be used.
...0" y1="0" y2="100%" /> <line x1="90" x2="90" y1="0" y2="100%" /> <!-- behaviors change based on the number of values in the attributes --> <text dy="20" x="10" y="30">svg</text> <text dy="0 10" x="50" y="30">svg</text> <text dy="0 10 20" x="90" y="30">svg</text> </svg> line { stroke: red; stroke-width: .5px; stroke-dasharray: 3px; } tref warning: as of svg2 <tref> is deprecated and shouldn't be used.

fill - SVG: Scalable Vector Graphics
--> <circle cx="250" cy="50" r="20"> <animate attributetype="xml" attributename="r" from="0" to="40" dur="5s" fill="freeze" /> </circle> </svg> altglyph warning: as of svg2 <altglyph> is deprecated and shouldn't be used.
... value freeze (keep the state of the last animation frame) | remove (keep the state of the first animation frame) default value remove animatable no animatecolor warning: as of svg animation 2 <animatecolor> is deprecated and shouldn't be used.
... tref warning: as of svg2 <tref> is deprecated and shouldn't be used.

kernelUnitLength - SVG: Scalable Vector Graphics
working draft marked the attribute as deprecated.
... working draft marked the attribute as deprecated.
... working draft marked the attribute as deprecated.

x - SVG: Scalable Vector Graphics
nobject>, <glyphref>, <image>, <mask>, <pattern>, <rect>, <svg>, <text>, <tref>, <tspan>, and <use> html,body,svg { height:100% } <svg viewbox="0 0 300 100" xmlns="http://www.w3.org/2000/svg"> <rect x="20" y="20" width="60" height="60" /> <rect x="120" y="20" width="60" height="60" /> <rect x="220" y="20" width="60" height="60" /> </svg> altglyph warning: as of svg2 <altglyph> is deprecated and shouldn't be used.
... glyphref warning: as of svg2 <glyphref> is deprecated and shouldn't be used.
...x1="50%" y1="0" x2="50%" y2="100%" /> <line x1="75%" y1="0" x2="75%" y2="100%" /> <!-- x with a single value --> <text y="40%" x="50%">svg</text> <!-- x with multiple values --> <text y="90%" x="25%, 50%, 75%">svg</text> </svg> text { font: 40px sans-serif; } line { fill: none; stroke: red; stroke-width: .5px; stroke-dasharray: 2px; } tref warning: as of svg2 <tref> is deprecated and shouldn't be used.

y - SVG: Scalable Vector Graphics
nobject>, <glyphref>, <image>, <mask>, <pattern>, <rect>, <svg>, <text>, <tref>, <tspan>, and <use> html,body,svg { height:100% } <svg viewbox="0 0 100 300" xmlns="http://www.w3.org/2000/svg"> <rect y="20" x="20" width="60" height="60" /> <rect y="120" x="20" width="60" height="60" /> <rect y="220" x="20" width="60" height="60" /> </svg> altglyph warning: as of svg2 <altglyph> is deprecated and shouldn't be used.
... glyphref warning: as of svg2 <glyphref> is deprecated and shouldn't be used.
...ne x1="5%" y1="0" x2="5%" y2="100%" /> <line x1="55%" y1="0" x2="55%" y2="100%" /> <!-- y with a single value --> <text y="40%" x="5%">svg</text> <!-- y with multiple values --> <text y="40%,60%,80%" x="55%">svg</text> </svg> text { font: 40px sans-serif; } line { fill: none; stroke: red; stroke-width: .5px; stroke-dasharray: 2px; } tref warning: as of svg2 <tref> is deprecated and shouldn't be used.

widget - Archive of obsolete content
deprecated in firefox 29 and removed in firefox 38.
... the widget api is deprecated from firefox 29 onwards.

Creating annotations - Archive of obsolete content
deprecated in firefox 29 and removed in firefox 38.
... the widget api is deprecated from firefox 29 onwards.

Displaying annotations - Archive of obsolete content
deprecated in firefox 29 and removed in firefox 38.
... the widget api is deprecated from firefox 29 onwards.

Implementing the widget - Archive of obsolete content
deprecated in firefox 29 and removed in firefox 38.
... the widget api is deprecated from firefox 29 onwards.

Overview - Archive of obsolete content
deprecated in firefox 29 and removed in firefox 38.
... the widget api is deprecated from firefox 29 onwards.

Storing annotations - Archive of obsolete content
deprecated in firefox 29 and removed in firefox 38.
... the widget api is deprecated from firefox 29 onwards.

Annotator - Archive of obsolete content
deprecated in firefox 29 and removed in firefox 38.
... the widget api is deprecated from firefox 29 onwards.

Introducing the Audio API extension - Archive of obsolete content
deprecated since gecko 22 (firefox 22 / thunderbird 22 / seamonkey 2.19)this feature has been removed from the web standards.
...this api has been deprecated since gecko 22, disabled since gecko 28, and removed from gecko 31.

Learn XPI Installer Scripting by Example - Archive of obsolete content
the majority of this api is now deprecated and as of gecko 1.9 no longer available.
...in this most common form of the registerchrome function (it can also be used to support the now-deprecatedmanifest.rdf style of installation archive), the three parameters represent, in order, the chrome switch used to indicate what kind of software is being registered, the target destination of the software (e.g., the "chrome" folder in the example above), and the path within the xpi (or jar theme archive) where the contents.rdf file is located.

for each...in - Archive of obsolete content
the for each...in statement is deprecated as the part of ecma-357 (e4x) standard.
... please see warning: javascript 1.6's for-each-in loops are deprecated for migration help.

JSException - Archive of obsolete content
constructor summary the netscape.javascript.jsexception class has the following constructors: jsexception deprecated constructors optionally let you specify a detail message and other information.
... jsexception constructors, deprecated in javascript 1.4, constructs a jsexception object with an optional detail message.

Using the Right Markup to Invoke Plugins - Archive of obsolete content
here is a sample: <applet code="nervoustext.class" width="534" height="50"> <param name="text" value="java(tm) 2 sdk, standard edition v1.4" /> </applet> the applet element has been deprecated in the html 4.01 specification, but an advantage to using it is that in mozilla-based browsers such as netscape 7, if you are missing java, an automatic obtainment mechanism is in place.
... link: http://devedge-temp.mozilla.org/view.../index_en.html references general -- specifications html 4.01 specification xhtml 1.0 specification object element html 4.01 specification on object element embed element plugin api reference on embed element on devedge-temp java html 4.01 applet definition (deprecated) java plugin homepage sun documentation on object, embed, and applet and different plugin versions sun demonstration of web pages using applet element sun demonstration of web pages using object/embed elements bugs and future directions in netscape and mozilla windows media in netscape netscape 7.1 and the windows media activex control bug 180378 bug 167601 bug 180411 ...

Simple Thunderbird build
to also build lightning when building thunderbird (deprecated) note: the lightning calendar add-on was integrated into thunderbird starting with version 74.
... the `--enable-calendar` option is now deprecated and no longer has any effect.

OS.File.Info
creationdate deprecated in bugzilla :: bug 807875.
...on unix systems it was returning the last modified date and thus it was deprecated.

source-editor.jsm
this is deprecated starting in firefox 13; use initialtext instead.
... deprecated since gecko 13.0 readonly boolean a boolean value indicating whether or not the source editor should be read only.

Index
8 deprecated ssl functions nss the following ssl functions have been replaced with newer versions.
... the deprecated functions are not supported by the new ssl shared libraries.

NSS 3.12.5 release_notes
deprecated headers the header file key.h is deprecated.
...w tls 1.2 cipher suites implemented in windows 7 to ssltap bug 516101: if pk11_importcert fails, it leaves the certificate undiscoverable by cert_pkixverifycert bug 518443: pk11_importandreturnprivatekey leaks an arena bug 518446: pk11_derencodepublickey leaks a certsubjectpublickeyinfo bug 518457: seckey_encodedersubjectpublickeyinfo and pk11_derencodepublickey are duplicate bug 522510: add deprecated comments to key.h and pk11func.h bug 522580: nss uses port_memcmp for comparing secret data.

NSS environment variables
3.12.6 nss_disable_ecc (deprecated) boolean (1 to disable) disable elliptic curve cryptography features.
... 3.16 nss_enable_ecc (deprecated) boolean (1 to enable) enable building of code that uses elliptic curve cryptography.

Rhino overview
deprecated language features several language features introduced in javascript 1.2 are now deprecated.
...the deprecated features are the __proto__ and __parent__ properties, and the constructors with, closure, and call.

SpiderMonkey 1.8
js_newdouble is now deprecated.
... the security apis js_setcheckobjectaccesscallback, js_setprincipalstranscoder, and js_setobjectprincipalsfinder are still present but are deprecated in this release.

Shell global objects
enableforeach() enables the deprecated, non-standard for-each.
... disableforeach() disables the deprecated, non-standard for-each.

Using the Places history service
the redirect flag is deprecated.
...0 is returned when there is no history, 1 is returned when there are one or more pages in history.deprecated, use hashistoryentries instead.

XPCOM array guide
nsistringenumerator / nsiutf8stringenumerator - enumerators for strings obsolete arrays / enumerators there are some deprecated classes which should not be used by new code.
... do not use nsisupportsarray; it is deprecated.

Index
60 using components deprecated, guide, needscontent, xpcom, xpcom:language bindings, xpconnect xpconnect works transparently in mozilla and xpcshell to give you access to xpcom components.
... 100 creating xpcom components deprecated, guide, needsmarkupwork, xpcom this guide is about gecko, and about creating xpcom components for gecko-based applications.

NS_ConvertASCIItoUTF16
4 ainteger print32 aradix appendfloat void appendfloat(float) - source append the given float to this string parameters float afloat void appendfloat(double) - source parameters double afloat beginreading prunichar* beginreading() const - source reading iterators nsreadingiterator<short unsigned int>& beginreading(nsreadingiterator<short unsigned int>&) const - source deprecated reading iterators parameters nsreadingiterator<short unsigned int>& iter prunichar*& beginreading(const prunichar*&) const - source parameters prunichar*& iter endreading prunichar* endreading() const - source nsreadingiterator<short unsigned int>& endreading(nsreadingiterator<short unsigned int>&) const - source parameters nsreadingiterator<short unsigned int>& iter prunic...
...har*& endreading(const prunichar*&) const - source parameters prunichar*& iter beginwriting prunichar* beginwriting() - source writing iterators nswritingiterator<short unsigned int>& beginwriting(nswritingiterator<short unsigned int>&) - source deprecated writing iterators parameters nswritingiterator<short unsigned int>& iter prunichar*& beginwriting(prunichar*&) - source parameters prunichar*& iter endwriting prunichar* endwriting() - source nswritingiterator<short unsigned int>& endwriting(nswritingiterator<short unsigned int>&) - source parameters nswritingiterator<short unsigned int>& iter prunichar*& endwriting(prunichar*&) - source parameters prunichar*& iter data prunichar* data() const - source accessors length pruint32 length() cons...

NS_ConvertUTF16toUTF8
32) - source parameters print64 ainteger print32 aradix appendfloat void appendfloat(float) - source append the given float to this string parameters float afloat void appendfloat(double) - source parameters double afloat beginreading char* beginreading() const - source reading iterators nsreadingiterator<char>& beginreading(nsreadingiterator<char>&) const - source deprecated reading iterators parameters nsreadingiterator<char>& iter char*& beginreading(const char*&) const - source parameters char*& iter endreading char* endreading() const - source nsreadingiterator<char>& endreading(nsreadingiterator<char>&) const - source parameters nsreadingiterator<char>& iter char*& endreading(const char*&) const - source parameters char*& iter begi...
...nwriting char* beginwriting() - source writing iterators nswritingiterator<char>& beginwriting(nswritingiterator<char>&) - source deprecated writing iterators parameters nswritingiterator<char>& iter char*& beginwriting(char*&) - source parameters char*& iter endwriting char* endwriting() - source nswritingiterator<char>& endwriting(nswritingiterator<char>&) - source parameters nswritingiterator<char>& iter char*& endwriting(char*&) - source parameters char*& iter data char* data() const - source accessors length pruint32 length() const - source isempty prbool isempty() const - source isvoid prbool isvoid() const - source isterminated prbool isterminated() const - source charat char charat(pruint32) const - source paramet...

NS_ConvertUTF8toUTF16
4 ainteger print32 aradix appendfloat void appendfloat(float) - source append the given float to this string parameters float afloat void appendfloat(double) - source parameters double afloat beginreading prunichar* beginreading() const - source reading iterators nsreadingiterator<short unsigned int>& beginreading(nsreadingiterator<short unsigned int>&) const - source deprecated reading iterators parameters nsreadingiterator<short unsigned int>& iter prunichar*& beginreading(const prunichar*&) const - source parameters prunichar*& iter endreading prunichar* endreading() const - source nsreadingiterator<short unsigned int>& endreading(nsreadingiterator<short unsigned int>&) const - source parameters nsreadingiterator<short unsigned int>& iter prunic...
...har*& endreading(const prunichar*&) const - source parameters prunichar*& iter beginwriting prunichar* beginwriting() - source writing iterators nswritingiterator<short unsigned int>& beginwriting(nswritingiterator<short unsigned int>&) - source deprecated writing iterators parameters nswritingiterator<short unsigned int>& iter prunichar*& beginwriting(prunichar*&) - source parameters prunichar*& iter endwriting prunichar* endwriting() - source nswritingiterator<short unsigned int>& endwriting(nswritingiterator<short unsigned int>&) - source parameters nswritingiterator<short unsigned int>& iter prunichar*& endwriting(prunichar*&) - source parameters prunichar*& iter data prunichar* data() const - source accessors length pruint32 length() cons...

NS_LossyConvertUTF16toASCII
32) - source parameters print64 ainteger print32 aradix appendfloat void appendfloat(float) - source append the given float to this string parameters float afloat void appendfloat(double) - source parameters double afloat beginreading char* beginreading() const - source reading iterators nsreadingiterator<char>& beginreading(nsreadingiterator<char>&) const - source deprecated reading iterators parameters nsreadingiterator<char>& iter char*& beginreading(const char*&) const - source parameters char*& iter endreading char* endreading() const - source nsreadingiterator<char>& endreading(nsreadingiterator<char>&) const - source parameters nsreadingiterator<char>& iter char*& endreading(const char*&) const - source parameters char*& iter begi...
...nwriting char* beginwriting() - source writing iterators nswritingiterator<char>& beginwriting(nswritingiterator<char>&) - source deprecated writing iterators parameters nswritingiterator<char>& iter char*& beginwriting(char*&) - source parameters char*& iter endwriting char* endwriting() - source nswritingiterator<char>& endwriting(nswritingiterator<char>&) - source parameters nswritingiterator<char>& iter char*& endwriting(char*&) - source parameters char*& iter data char* data() const - source accessors length pruint32 length() const - source isempty prbool isempty() const - source isvoid prbool isvoid() const - source isterminated prbool isterminated() const - source charat char charat(pruint32) const - source paramet...

nsACString_internal
parameters nscsubstringtuple& tuple void nsacstring_internal(char*, pruint32, pruint32) - source parameters char* data pruint32 length pruint32 flags beginreading char* beginreading() const - source reading iterators nsreadingiterator<char>& beginreading(nsreadingiterator<char>&) const - source deprecated reading iterators parameters nsreadingiterator<char>& iter char*& beginreading(const char*&) const - source parameters char*& iter endreading char* endreading() const - source nsreadingiterator<char>& endreading(nsreadingiterator<char>&) const - source parameters nsreadingiterator<char>& iter char*& endreading(const char*&) const - source parameters char*& iter begi...
...nwriting char* beginwriting() - source writing iterators nswritingiterator<char>& beginwriting(nswritingiterator<char>&) - source deprecated writing iterators parameters nswritingiterator<char>& iter char*& beginwriting(char*&) - source parameters char*& iter endwriting char* endwriting() - source nswritingiterator<char>& endwriting(nswritingiterator<char>&) - source parameters nswritingiterator<char>& iter char*& endwriting(char*&) - source parameters char*& iter data char* data() const - source accessors length pruint32 length() const - source isempty prbool isempty() const - source isvoid prbool isvoid() const - source isterminated prbool isterminated() const - source charat char charat(pruint32) const - source paramet...

nsAString_internal
parameters nssubstringtuple& tuple void nsastring_internal(prunichar*, pruint32, pruint32) - source parameters prunichar* data pruint32 length pruint32 flags beginreading prunichar* beginreading() const - source reading iterators nsreadingiterator<short unsigned int>& beginreading(nsreadingiterator<short unsigned int>&) const - source deprecated reading iterators parameters nsreadingiterator<short unsigned int>& iter prunichar*& beginreading(const prunichar*&) const - source parameters prunichar*& iter endreading prunichar* endreading() const - source nsreadingiterator<short unsigned int>& endreading(nsreadingiterator<short unsigned int>&) const - source parameters nsreadingiterator<short unsigned int>& iter prunic...
...har*& endreading(const prunichar*&) const - source parameters prunichar*& iter beginwriting prunichar* beginwriting() - source writing iterators nswritingiterator<short unsigned int>& beginwriting(nswritingiterator<short unsigned int>&) - source deprecated writing iterators parameters nswritingiterator<short unsigned int>& iter prunichar*& beginwriting(prunichar*&) - source parameters prunichar*& iter endwriting prunichar* endwriting() - source nswritingiterator<short unsigned int>& endwriting(nswritingiterator<short unsigned int>&) - source parameters nswritingiterator<short unsigned int>& iter prunichar*& endwriting(prunichar*&) - source parameters prunichar*& iter data prunichar* data() const - source accessors length pruint32 length() cons...

nsAdoptingCString
32) - source parameters print64 ainteger print32 aradix appendfloat void appendfloat(float) - source append the given float to this string parameters float afloat void appendfloat(double) - source parameters double afloat beginreading char* beginreading() const - source reading iterators nsreadingiterator<char>& beginreading(nsreadingiterator<char>&) const - source deprecated reading iterators parameters nsreadingiterator<char>& iter char*& beginreading(const char*&) const - source parameters char*& iter endreading char* endreading() const - source nsreadingiterator<char>& endreading(nsreadingiterator<char>&) const - source parameters nsreadingiterator<char>& iter char*& endreading(const char*&) const - source parameters char*& iter begi...
...nwriting char* beginwriting() - source writing iterators nswritingiterator<char>& beginwriting(nswritingiterator<char>&) - source deprecated writing iterators parameters nswritingiterator<char>& iter char*& beginwriting(char*&) - source parameters char*& iter endwriting char* endwriting() - source nswritingiterator<char>& endwriting(nswritingiterator<char>&) - source parameters nswritingiterator<char>& iter char*& endwriting(char*&) - source parameters char*& iter data char* data() const - source accessors length pruint32 length() const - source isempty prbool isempty() const - source isvoid prbool isvoid() const - source isterminated prbool isterminated() const - source charat char charat(pruint32) const - source paramet...

nsAdoptingString
4 ainteger print32 aradix appendfloat void appendfloat(float) - source append the given float to this string parameters float afloat void appendfloat(double) - source parameters double afloat beginreading prunichar* beginreading() const - source reading iterators nsreadingiterator<short unsigned int>& beginreading(nsreadingiterator<short unsigned int>&) const - source deprecated reading iterators parameters nsreadingiterator<short unsigned int>& iter prunichar*& beginreading(const prunichar*&) const - source parameters prunichar*& iter endreading prunichar* endreading() const - source nsreadingiterator<short unsigned int>& endreading(nsreadingiterator<short unsigned int>&) const - source parameters nsreadingiterator<short unsigned int>& iter prunic...
...har*& endreading(const prunichar*&) const - source parameters prunichar*& iter beginwriting prunichar* beginwriting() - source writing iterators nswritingiterator<short unsigned int>& beginwriting(nswritingiterator<short unsigned int>&) - source deprecated writing iterators parameters nswritingiterator<short unsigned int>& iter prunichar*& beginwriting(prunichar*&) - source parameters prunichar*& iter endwriting prunichar* endwriting() - source nswritingiterator<short unsigned int>& endwriting(nswritingiterator<short unsigned int>&) - source parameters nswritingiterator<short unsigned int>& iter prunichar*& endwriting(prunichar*&) - source parameters prunichar*& iter data prunichar* data() const - source accessors length pruint32 length() cons...

nsAutoString
4 ainteger print32 aradix appendfloat void appendfloat(float) - source append the given float to this string parameters float afloat void appendfloat(double) - source parameters double afloat beginreading prunichar* beginreading() const - source reading iterators nsreadingiterator<short unsigned int>& beginreading(nsreadingiterator<short unsigned int>&) const - source deprecated reading iterators parameters nsreadingiterator<short unsigned int>& iter prunichar*& beginreading(const prunichar*&) const - source parameters prunichar*& iter endreading prunichar* endreading() const - source nsreadingiterator<short unsigned int>& endreading(nsreadingiterator<short unsigned int>&) const - source parameters nsreadingiterator<short unsigned int>& iter prunic...
...har*& endreading(const prunichar*&) const - source parameters prunichar*& iter beginwriting prunichar* beginwriting() - source writing iterators nswritingiterator<short unsigned int>& beginwriting(nswritingiterator<short unsigned int>&) - source deprecated writing iterators parameters nswritingiterator<short unsigned int>& iter prunichar*& beginwriting(prunichar*&) - source parameters prunichar*& iter endwriting prunichar* endwriting() - source nswritingiterator<short unsigned int>& endwriting(nswritingiterator<short unsigned int>&) - source parameters nswritingiterator<short unsigned int>& iter prunichar*& endwriting(prunichar*&) - source parameters prunichar*& iter data prunichar* data() const - source accessors length pruint32 length() cons...

nsCAutoString
print64 ainteger print32 aradix appendfloat void appendfloat(float) - source append the given float to this string parameters float afloat void appendfloat(double) - source parameters double afloat beginreading char* beginreading() const - source reading iterators nsreadingiterator<char>& beginreading(nsreadingiterator<char>&) const - source deprecated reading iterators parameters nsreadingiterator<char>& iter char*& beginreading(const char*&) const - source parameters char*& iter endreading char* endreading() const - source nsreadingiterator<char>& endreading(nsreadingiterator<char>&) const - source parameters nsreadingiterator<char>& iter char*& endreading(const char*&) const - source paramet...
...ers char*& iter beginwriting char* beginwriting() - source writing iterators nswritingiterator<char>& beginwriting(nswritingiterator<char>&) - source deprecated writing iterators parameters nswritingiterator<char>& iter char*& beginwriting(char*&) - source parameters char*& iter endwriting char* endwriting() - source nswritingiterator<char>& endwriting(nswritingiterator<char>&) - source parameters nswritingiterator<char>& iter char*& endwriting(char*&) - source parameters char*& iter data char* data() const - source accessors length pruint32 length() const - source isempty prbool isempty() const - source isvoid prbool isvoid() const - source isterminated prbool isterm...

nsCString
32) - source parameters print64 ainteger print32 aradix appendfloat void appendfloat(float) - source append the given float to this string parameters float afloat void appendfloat(double) - source parameters double afloat beginreading char* beginreading() const - source reading iterators nsreadingiterator<char>& beginreading(nsreadingiterator<char>&) const - source deprecated reading iterators parameters nsreadingiterator<char>& iter char*& beginreading(const char*&) const - source parameters char*& iter endreading char* endreading() const - source nsreadingiterator<char>& endreading(nsreadingiterator<char>&) const - source parameters nsreadingiterator<char>& iter char*& endreading(const char*&) const - source parameters char*& iter begi...
...nwriting char* beginwriting() - source writing iterators nswritingiterator<char>& beginwriting(nswritingiterator<char>&) - source deprecated writing iterators parameters nswritingiterator<char>& iter char*& beginwriting(char*&) - source parameters char*& iter endwriting char* endwriting() - source nswritingiterator<char>& endwriting(nswritingiterator<char>&) - source parameters nswritingiterator<char>& iter char*& endwriting(char*&) - source parameters char*& iter data char* data() const - source accessors length pruint32 length() const - source isempty prbool isempty() const - source isvoid prbool isvoid() const - source isterminated prbool isterminated() const - source charat char charat(pruint32) const - source paramet...

nsDependentCString
32) - source parameters print64 ainteger print32 aradix appendfloat void appendfloat(float) - source append the given float to this string parameters float afloat void appendfloat(double) - source parameters double afloat beginreading char* beginreading() const - source reading iterators nsreadingiterator<char>& beginreading(nsreadingiterator<char>&) const - source deprecated reading iterators parameters nsreadingiterator<char>& iter char*& beginreading(const char*&) const - source parameters char*& iter endreading char* endreading() const - source nsreadingiterator<char>& endreading(nsreadingiterator<char>&) const - source parameters nsreadingiterator<char>& iter char*& endreading(const char*&) const - source parameters char*& iter begi...
...nwriting char* beginwriting() - source writing iterators nswritingiterator<char>& beginwriting(nswritingiterator<char>&) - source deprecated writing iterators parameters nswritingiterator<char>& iter char*& beginwriting(char*&) - source parameters char*& iter endwriting char* endwriting() - source nswritingiterator<char>& endwriting(nswritingiterator<char>&) - source parameters nswritingiterator<char>& iter char*& endwriting(char*&) - source parameters char*& iter data char* data() const - source accessors length pruint32 length() const - source isempty prbool isempty() const - source isvoid prbool isvoid() const - source isterminated prbool isterminated() const - source charat char charat(pruint32) const - source paramet...

nsDependentCSubstring
nd void rebind(const nsacstring_internal&, pruint32, pruint32) - source parameters nsacstring_internal& <anonymous> pruint32 startpos pruint32 length void rebind(const char*, const char*) - source parameters char* start char* end beginreading char* beginreading() const - source reading iterators nsreadingiterator<char>& beginreading(nsreadingiterator<char>&) const - source deprecated reading iterators parameters nsreadingiterator<char>& iter char*& beginreading(const char*&) const - source parameters char*& iter endreading char* endreading() const - source nsreadingiterator<char>& endreading(nsreadingiterator<char>&) const - source parameters nsreadingiterator<char>& iter char*& endreading(const char*&) const - source parameters char*& iter begi...
...nwriting char* beginwriting() - source writing iterators nswritingiterator<char>& beginwriting(nswritingiterator<char>&) - source deprecated writing iterators parameters nswritingiterator<char>& iter char*& beginwriting(char*&) - source parameters char*& iter endwriting char* endwriting() - source nswritingiterator<char>& endwriting(nswritingiterator<char>&) - source parameters nswritingiterator<char>& iter char*& endwriting(char*&) - source parameters char*& iter data char* data() const - source accessors length pruint32 length() const - source isempty prbool isempty() const - source isvoid prbool isvoid() const - source isterminated prbool isterminated() const - source charat char charat(pruint32) const - source paramet...

nsDependentString
4 ainteger print32 aradix appendfloat void appendfloat(float) - source append the given float to this string parameters float afloat void appendfloat(double) - source parameters double afloat beginreading prunichar* beginreading() const - source reading iterators nsreadingiterator<short unsigned int>& beginreading(nsreadingiterator<short unsigned int>&) const - source deprecated reading iterators parameters nsreadingiterator<short unsigned int>& iter prunichar*& beginreading(const prunichar*&) const - source parameters prunichar*& iter endreading prunichar* endreading() const - source nsreadingiterator<short unsigned int>& endreading(nsreadingiterator<short unsigned int>&) const - source parameters nsreadingiterator<short unsigned int>& iter prunic...
...har*& endreading(const prunichar*&) const - source parameters prunichar*& iter beginwriting prunichar* beginwriting() - source writing iterators nswritingiterator<short unsigned int>& beginwriting(nswritingiterator<short unsigned int>&) - source deprecated writing iterators parameters nswritingiterator<short unsigned int>& iter prunichar*& beginwriting(prunichar*&) - source parameters prunichar*& iter endwriting prunichar* endwriting() - source nswritingiterator<short unsigned int>& endwriting(nswritingiterator<short unsigned int>&) - source parameters nswritingiterator<short unsigned int>& iter prunichar*& endwriting(prunichar*&) - source parameters prunichar*& iter data prunichar* data() const - source accessors length pruint32 length() cons...

nsDependentSubstring
2, pruint32) - source parameters nsastring_internal& <anonymous> pruint32 startpos pruint32 length void rebind(const prunichar*, const prunichar*) - source parameters prunichar* start prunichar* end beginreading prunichar* beginreading() const - source reading iterators nsreadingiterator<short unsigned int>& beginreading(nsreadingiterator<short unsigned int>&) const - source deprecated reading iterators parameters nsreadingiterator<short unsigned int>& iter prunichar*& beginreading(const prunichar*&) const - source parameters prunichar*& iter endreading prunichar* endreading() const - source nsreadingiterator<short unsigned int>& endreading(nsreadingiterator<short unsigned int>&) const - source parameters nsreadingiterator<short unsigned int>& iter prunic...
...har*& endreading(const prunichar*&) const - source parameters prunichar*& iter beginwriting prunichar* beginwriting() - source writing iterators nswritingiterator<short unsigned int>& beginwriting(nswritingiterator<short unsigned int>&) - source deprecated writing iterators parameters nswritingiterator<short unsigned int>& iter prunichar*& beginwriting(prunichar*&) - source parameters prunichar*& iter endwriting prunichar* endwriting() - source nswritingiterator<short unsigned int>& endwriting(nswritingiterator<short unsigned int>&) - source parameters nswritingiterator<short unsigned int>& iter prunichar*& endwriting(prunichar*&) - source parameters prunichar*& iter data prunichar* data() const - source accessors length pruint32 length() cons...

nsFixedCString
32) - source parameters print64 ainteger print32 aradix appendfloat void appendfloat(float) - source append the given float to this string parameters float afloat void appendfloat(double) - source parameters double afloat beginreading char* beginreading() const - source reading iterators nsreadingiterator<char>& beginreading(nsreadingiterator<char>&) const - source deprecated reading iterators parameters nsreadingiterator<char>& iter char*& beginreading(const char*&) const - source parameters char*& iter endreading char* endreading() const - source nsreadingiterator<char>& endreading(nsreadingiterator<char>&) const - source parameters nsreadingiterator<char>& iter char*& endreading(const char*&) const - source parameters char*& iter begi...
...nwriting char* beginwriting() - source writing iterators nswritingiterator<char>& beginwriting(nswritingiterator<char>&) - source deprecated writing iterators parameters nswritingiterator<char>& iter char*& beginwriting(char*&) - source parameters char*& iter endwriting char* endwriting() - source nswritingiterator<char>& endwriting(nswritingiterator<char>&) - source parameters nswritingiterator<char>& iter char*& endwriting(char*&) - source parameters char*& iter data char* data() const - source accessors length pruint32 length() const - source isempty prbool isempty() const - source isvoid prbool isvoid() const - source isterminated prbool isterminated() const - source charat char charat(pruint32) const - source paramet...

nsFixedString
4 ainteger print32 aradix appendfloat void appendfloat(float) - source append the given float to this string parameters float afloat void appendfloat(double) - source parameters double afloat beginreading prunichar* beginreading() const - source reading iterators nsreadingiterator<short unsigned int>& beginreading(nsreadingiterator<short unsigned int>&) const - source deprecated reading iterators parameters nsreadingiterator<short unsigned int>& iter prunichar*& beginreading(const prunichar*&) const - source parameters prunichar*& iter endreading prunichar* endreading() const - source nsreadingiterator<short unsigned int>& endreading(nsreadingiterator<short unsigned int>&) const - source parameters nsreadingiterator<short unsigned int>& iter prunic...
...har*& endreading(const prunichar*&) const - source parameters prunichar*& iter beginwriting prunichar* beginwriting() - source writing iterators nswritingiterator<short unsigned int>& beginwriting(nswritingiterator<short unsigned int>&) - source deprecated writing iterators parameters nswritingiterator<short unsigned int>& iter prunichar*& beginwriting(prunichar*&) - source parameters prunichar*& iter endwriting prunichar* endwriting() - source nswritingiterator<short unsigned int>& endwriting(nswritingiterator<short unsigned int>&) - source parameters nswritingiterator<short unsigned int>& iter prunichar*& endwriting(prunichar*&) - source parameters prunichar*& iter data prunichar* data() const - source accessors length pruint32 length() cons...

nsPromiseFlatCString
32) - source parameters print64 ainteger print32 aradix appendfloat void appendfloat(float) - source append the given float to this string parameters float afloat void appendfloat(double) - source parameters double afloat beginreading char* beginreading() const - source reading iterators nsreadingiterator<char>& beginreading(nsreadingiterator<char>&) const - source deprecated reading iterators parameters nsreadingiterator<char>& iter char*& beginreading(const char*&) const - source parameters char*& iter endreading char* endreading() const - source nsreadingiterator<char>& endreading(nsreadingiterator<char>&) const - source parameters nsreadingiterator<char>& iter char*& endreading(const char*&) const - source parameters char*& iter begi...
...nwriting char* beginwriting() - source writing iterators nswritingiterator<char>& beginwriting(nswritingiterator<char>&) - source deprecated writing iterators parameters nswritingiterator<char>& iter char*& beginwriting(char*&) - source parameters char*& iter endwriting char* endwriting() - source nswritingiterator<char>& endwriting(nswritingiterator<char>&) - source parameters nswritingiterator<char>& iter char*& endwriting(char*&) - source parameters char*& iter data char* data() const - source accessors length pruint32 length() const - source isempty prbool isempty() const - source isvoid prbool isvoid() const - source isterminated prbool isterminated() const - source charat char charat(pruint32) const - source paramet...

nsPromiseFlatString
4 ainteger print32 aradix appendfloat void appendfloat(float) - source append the given float to this string parameters float afloat void appendfloat(double) - source parameters double afloat beginreading prunichar* beginreading() const - source reading iterators nsreadingiterator<short unsigned int>& beginreading(nsreadingiterator<short unsigned int>&) const - source deprecated reading iterators parameters nsreadingiterator<short unsigned int>& iter prunichar*& beginreading(const prunichar*&) const - source parameters prunichar*& iter endreading prunichar* endreading() const - source nsreadingiterator<short unsigned int>& endreading(nsreadingiterator<short unsigned int>&) const - source parameters nsreadingiterator<short unsigned int>& iter prunic...
...har*& endreading(const prunichar*&) const - source parameters prunichar*& iter beginwriting prunichar* beginwriting() - source writing iterators nswritingiterator<short unsigned int>& beginwriting(nswritingiterator<short unsigned int>&) - source deprecated writing iterators parameters nswritingiterator<short unsigned int>& iter prunichar*& beginwriting(prunichar*&) - source parameters prunichar*& iter endwriting prunichar* endwriting() - source nswritingiterator<short unsigned int>& endwriting(nswritingiterator<short unsigned int>&) - source parameters nswritingiterator<short unsigned int>& iter prunichar*& endwriting(prunichar*&) - source parameters prunichar*& iter data prunichar* data() const - source accessors length pruint32 length() cons...

nsString
4 ainteger print32 aradix appendfloat void appendfloat(float) - source append the given float to this string parameters float afloat void appendfloat(double) - source parameters double afloat beginreading prunichar* beginreading() const - source reading iterators nsreadingiterator<short unsigned int>& beginreading(nsreadingiterator<short unsigned int>&) const - source deprecated reading iterators parameters nsreadingiterator<short unsigned int>& iter prunichar*& beginreading(const prunichar*&) const - source parameters prunichar*& iter endreading prunichar* endreading() const - source nsreadingiterator<short unsigned int>& endreading(nsreadingiterator<short unsigned int>&) const - source parameters nsreadingiterator<short unsigned int>& iter prunic...
...har*& endreading(const prunichar*&) const - source parameters prunichar*& iter beginwriting prunichar* beginwriting() - source writing iterators nswritingiterator<short unsigned int>& beginwriting(nswritingiterator<short unsigned int>&) - source deprecated writing iterators parameters nswritingiterator<short unsigned int>& iter prunichar*& beginwriting(prunichar*&) - source parameters prunichar*& iter endwriting prunichar* endwriting() - source nswritingiterator<short unsigned int>& endwriting(nswritingiterator<short unsigned int>&) - source parameters nswritingiterator<short unsigned int>& iter prunichar*& endwriting(prunichar*&) - source parameters prunichar*& iter data prunichar* data() const - source accessors length pruint32 length() cons...

nsXPIDLCString
32) - source parameters print64 ainteger print32 aradix appendfloat void appendfloat(float) - source append the given float to this string parameters float afloat void appendfloat(double) - source parameters double afloat beginreading char* beginreading() const - source reading iterators nsreadingiterator<char>& beginreading(nsreadingiterator<char>&) const - source deprecated reading iterators parameters nsreadingiterator<char>& iter char*& beginreading(const char*&) const - source parameters char*& iter endreading char* endreading() const - source nsreadingiterator<char>& endreading(nsreadingiterator<char>&) const - source parameters nsreadingiterator<char>& iter char*& endreading(const char*&) const - source parameters char*& iter begi...
...nwriting char* beginwriting() - source writing iterators nswritingiterator<char>& beginwriting(nswritingiterator<char>&) - source deprecated writing iterators parameters nswritingiterator<char>& iter char*& beginwriting(char*&) - source parameters char*& iter endwriting char* endwriting() - source nswritingiterator<char>& endwriting(nswritingiterator<char>&) - source parameters nswritingiterator<char>& iter char*& endwriting(char*&) - source parameters char*& iter data char* data() const - source accessors length pruint32 length() const - source isempty prbool isempty() const - source isvoid prbool isvoid() const - source isterminated prbool isterminated() const - source charat char charat(pruint32) const - source paramet...

nsXPIDLString
4 ainteger print32 aradix appendfloat void appendfloat(float) - source append the given float to this string parameters float afloat void appendfloat(double) - source parameters double afloat beginreading prunichar* beginreading() const - source reading iterators nsreadingiterator<short unsigned int>& beginreading(nsreadingiterator<short unsigned int>&) const - source deprecated reading iterators parameters nsreadingiterator<short unsigned int>& iter prunichar*& beginreading(const prunichar*&) const - source parameters prunichar*& iter endreading prunichar* endreading() const - source nsreadingiterator<short unsigned int>& endreading(nsreadingiterator<short unsigned int>&) const - source parameters nsreadingiterator<short unsigned int>& iter prunic...
...har*& endreading(const prunichar*&) const - source parameters prunichar*& iter beginwriting prunichar* beginwriting() - source writing iterators nswritingiterator<short unsigned int>& beginwriting(nswritingiterator<short unsigned int>&) - source deprecated writing iterators parameters nswritingiterator<short unsigned int>& iter prunichar*& beginwriting(prunichar*&) - source parameters prunichar*& iter endwriting prunichar* endwriting() - source nswritingiterator<short unsigned int>& endwriting(nswritingiterator<short unsigned int>&) - source parameters nswritingiterator<short unsigned int>& iter prunichar*& endwriting(prunichar*&) - source parameters prunichar*& iter data prunichar* data() const - source accessors length pruint32 length() cons...

amIInstallTrigger
1.0 66 introduced gecko 2.0 inherits from: nsisupports last changed in gecko 2.0 (firefox 4 / thunderbird 3.3 / seamonkey 2.1) method overview boolean enabled(); boolean install(in nsivariant aargs, [optional] in amiinstallcallback acallback); boolean installchrome(in pruint32 atype, in astring aurl, in astring askin); deprecated since gecko 2.0 boolean startsoftwareupdate(in astring aurl, [optional] in print32 aflags); deprecated since gecko 2.0 boolean updateenabled(); deprecated since gecko 2.0 constants retained for backwards compatibility.
...this method is deprecated, please use install() in the future.

nsIDOMOfflineResourceList
note: this method has been deprecated.
... note: this method is deprecated in firefox 3.5; you should instead access the list directly using the items attribute.

nsIDownload
this interface is deprecated as of firefox 26.
... deprecated since gecko 19.0 guid astring the guid of the download that is stored in the database.

nsIMemory
method overview voidptr alloc(in size_t size); violates the xpcom interface guidelines void free(in voidptr ptr); violates the xpcom interface guidelines void heapminimize(in boolean immediate); boolean islowmemory(); deprecated since gecko 2.0 voidptr realloc(in voidptr ptr, in size_t newsize); violates the xpcom interface guidelines methods alloc allocates a block of memory of a particular size.
... note: this method was deprecated in gecko 2.0.

nsIMemoryReporter
constant value description kind_mapped 0 this is deprecated synonym for kind_nonheap.
... deprecated since gecko 8.0 kind_nonheap 0 allocated directly by os calls e.g.

Component; nsIPrefBranch
interfaces currently supported are: nsilocalfile nsisupportsstring (unichar) (removed as of gecko 58 in favor of getstringpref) nsipreflocalizedstring (localized unichar) nsifilespec (deprecated - to be removed eventually) avalue the xpcom object into which to the complex preference value should be retrieved.
...interfaces currently supported are: nsilocalfile nsisupportsstring (unichar) (removed as of gecko 58 in favor of setstringpref) nsipreflocalizedstring (localized unichar) nsifilespec (deprecated - to be removed eventually) avalue the xpcom object from which to set the complex preference value.

nsIProtocolProxyService
to access the service use: var pps = components.classes["@mozilla.org/network/protocol-proxy-service;1"] .getservice(components.interfaces.nsiprotocolproxyservice); method overview deprecated since gecko 18 nsiproxyinfo resolve(in nsiuri auri, in unsigned long aflags); nsicancelable asyncresolve(in nsiuri auri, in unsigned long aflags,in nsiprotocolproxycallback acallback); nsiproxyinfo newproxyinfo(in acstring atype, in autf8string ahost,in long aport, in unsigned long aflags, in unsigned long afailovertimeout, in nsiproxyinfo afailoverproxy); nsiproxyinfo ...
... methods resolve() deprecated since gecko 18 this method has been removed in firefox 18.

nsIXPConnect
note: this method is deprecated.
...hrown missing exception missing description setsecuritymanagerforjscontext() void setsecuritymanagerforjscontext( in jscontextptr ajscontext, in nsixpcsecuritymanager amanager, in pruint16 flags ); parameters ajscontext missing description amanager missing description flags missing description exceptions thrown missing exception missing description syncjscontexts() deprecated do-nothing function.

XPCOM Thread Synchronization
quick reference: difference between nsautolock api and new api old construction note: this is deprecated code that is shown only to compare with approved code.
... } old usage note: this is deprecated code that is shown only to compare with approved code.

WebIDL bindings
for example, given this idl: interface interfacewithrenamedthings { [binaryname="renamedmethod"] void somemethod(); [binaryname="renamedattribute"] attribute long someattribute; }; the corresponding c++ would be: class interfacewithrenamedthings { public: void renamedmethod(); int32_t renamedattribute(); void setrenamedattribute(int32_t); }; [deprecated="tag"] when deprecating an interface or method, the [deprecated] annotation causes the webidl compiler to insert code that generates deprecation warnings.
... the complete list of valid deprecation tags is maintained in nsdeprecatedoperationlist.h.

Working with windows in chrome code
the former has been deprecated for a while, and you should use content in the new code.
... using fuel application object the fuel library has been deprecated as of firefox 41 the fuel javascript library has a simple method for sharing data between windows.

Shader Editor - Firefox Developer Tools
note: this tool has been deprecated and will soon be removed from firefox.
... for details, see deprecated tools.

Web Audio Editor - Firefox Developer Tools
notice: this tool has been deprecated and will soon be removed from firefox.
... for details, see deprecated tools.

AnimationEvent.initAnimationEvent() - Web APIs
summary the animationevent.initanimationevent() method initializes an animation event created using the deprecated document.createevent("animationevent") method.
...it has been deprecated and is in the progress of being removed from most implementations.

AudioListener - Web APIs
note: although these methods are deprecated they are currently the only way to set the orientation and position in firefox, internet explorer and safari.
... deprecated features audiolistener.dopplerfactor a double value representing the amount of pitch shift to use when rendering a doppler effect.

CanvasRenderingContext2D - Web APIs
non-standard apis blink and webkit most of these apis are deprecated and were removed shortly after chrome 36.
... canvasrenderingcontext2d.moztextstyle introduced in in gecko 1.9, deprecated in favor of the canvasrenderingcontext2d.font property.

CustomEvent.initCustomEvent() - Web APIs
do not use this method anymore, as it is deprecated.
... living standard initial definition, but already deprecated in favor of the use of a constructor, customevent() ...

DataTransfer - Web APIs
deprecated properties datatransfer.mozitemcount read only gives the number of items in the drag operation.
... deprecated methods datatransfer.mozcleardataat() removes the data associated with the given format for an item at the specified index.

Document.alinkColor - Web APIs
document.alinkcolor is deprecated in dom level 2 html.
... another alternative is document.body.alink, although this is deprecated in html 4.01 in favor of the css alternative.

Document.fgColor - Web APIs
document.fgcolor is deprecated in dom level 2 html.
... another alternative is document.body.text, although this is deprecated in html 4.01 in favor of the css alternative above.

Document.rootElement - Web APIs
it is deprecated in favor of document.documentelement, which returns the root element for all documents.
... candidate recommendation deprecated scalable vector graphics (svg) 1.1 (second edition)the definition of 'svgdocument.rootelement' in that specification.

Document.vlinkColor - Web APIs
document.vlinkcolor is deprecated in dom level 2 html.
... another alternative is document.body.vlink, although this is deprecated in html 4.01 in favor of the css alternative.

Document - Web APIs
deprecated.
... deprecated properties document.alinkcolor returns or sets the color of active links in the document body.

Event - Web APIs
deprecated properties event.scoped read only a boolean indicating whether the given event will bubble across through the shadow root into the standard dom.
... deprecated methods event.createevent() creates a new event, which must then be initialized by calling its initevent() method.

HTMLImageElement.name - Web APIs
the htmlimageelement interface's deprecated name property specifies a name for the element.
... important: this property is deprecated and is only in the specification still for backward compatibility purposes.

The HTML DOM API - Web APIs
ment htmlscriptelement htmlselectelement htmlslotelement htmlsourceelement htmlspanelement htmlstyleelement htmltablecaptionelement htmltablecellelement htmltablecolelement htmltableelement htmltablerowelement htmltablesectionelement htmltemplateelement htmltextareaelement htmltimeelement htmltitleelement htmltrackelement htmlulistelement htmlunknownelement htmlvideoelement deprecated html element interfaces htmlmarqueeelement obsolete html element interfaces htmlbasefontelement htmlfontelement htmlframeelement htmlframesetelement htmlisindexelement htmlmenuitemelement web app and browser integration interfaces these interfaces offer access to the browser window and document that contain the html, as well as to the browser's state, available p...
... barprop navigator window deprecated web app and browser integration interfaces external obsolete web app and browser integration interfaces applicationcache plugin pluginarray form support interfaces these interfaces provide structure and functionality required by the elements used to create and manage forms, including the <form> and <input> elements.

Basic concepts - Web APIs
indexeddb used to have a competing spec, websql database, but the w3c deprecated it on november 18, 2010.
...old browsers implemented the now deprecated and removed idbdatabase.setversion() method.

KeyboardEvent.charCode - Web APIs
do not use this property, as it is deprecated.
... obsolete initial definition; specified as deprecated ...

KeyboardEvent.getModifierState() - Web APIs
"accel" virtual modifier note: the "accel" virtual modifier has been effectively deprecated in current drafts of the dom3 events specification.
... getmodifierstate() also accepts a deprecated virtual modifier named "accel".

KeyboardEvent.keyIdentifier - Web APIs
the deprecated keyboardevent.keyidentifier read-only property returns a "key identifier" string that can be used to determine what key was pressed.
... its non-deprecated replacement is keyboardevent.key.

MouseEvent.initMouseEvent() - Web APIs
do not use this method anymore as it is deprecated.
... obsolete from document object model (dom) level 2 events specification, deprecated.

MutationEvent - Web APIs
note: mutation events (w3c dom level 3 events) have been deprecated in favor of mutation observers (w3c dom4).
... preface the mutation events have been marked as deprecated in the dom events specification, as the api's design is flawed (see details in the "dom mutation events replacement: the story so far / existing points of consensus" post to public-webapps).

Navigator - Web APIs
navigator.moznotification deprecated since gecko 22 ...
... navigatorid.taintenabled() deprecated since gecko 1.7.8 obsolete since gecko 9.0 returns false.

Node.nodeType - Web APIs
deprecated node type constants the following constants have been deprecated and should not be used anymore.
... living standard deprecated attribute_node, entity_reference_node and notation_node types.

Notification.requestPermission() - Web APIs
}); previously, the syntax was based on a simple callback; this version is now deprecated: notification.requestpermission(callback); parameters callback optional deprecated since gecko 46 an optional callback function that is called with the permission value.
... deprecated in favor of the promise return value.

ProgressEvent.initProgressEvent() - Web APIs
the progressevent.initprogressevent() method initializes an animation event created using the deprecated document.createevent("progressevent") method.
...it has been deprecated and removed from most implementation.

RTCPeerConnection.addIceCandidate() - Web APIs
if no candidate object is specified, or its value is null, an end-of-candidates signal is sent to the remote peer using the end-of-candidates a-line, formatted simply like this: a=end-of-candidates deprecated parameters in older code and documentation, you may see a callback-based version of this function.
... this has been deprecated and its use is strongly discouraged.

RTCPeerConnection.createAnswer() - Web APIs
deprecated parameters in older code and documentation, you may see a callback-based version of this function.
... this has been deprecated and its use is strongly discouraged.

RTCPeerConnection.createOffer() - Web APIs
deprecated parameters in older code and documentation, you may see a callback-based version of this function.
... this has been deprecated and its use is strongly discouraged.

TransitionEvent.initTransitionEvent() - Web APIs
the transitionevent.inittransitionevent() method initializes a transition event created using the deprecated document.createevent("transitionevent") method.
...it has been deprecated and is in the progress of been removed from most implementation.

Using XMLHttpRequest - Web APIs
note: starting with gecko 30.0 (firefox 30.0 / thunderbird 30.0 / seamonkey 2.27), synchronous requests on the main thread have been deprecated due to the negative effects to the user experience.
... note: the non-standard sendasbinary method is considered deprecated as of gecko 31 (firefox 31 / thunderbird 31 / seamonkey 2.28) and will be removed soon.

color - CSS: Cascading Style Sheets
the transparent keyword maps to rgba(0,0,0,0).animation typea color formal syntax <color>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?
...allows alpha values in rgb() and hsl(), turning rgba() and hsla() into (deprecated) aliases for them.

<color> - CSS: Cascading Style Sheets
canvastext text in application content or documents field background of input fields fieldtext text in input fields graytext text that is disabled highlight background of items that are selected in a control highlighttext text of items that are selected in a control linktext text of non-active, non-visited links visitedtext text of visited links deprecated system color keywords the following keywords were defined in earlier versions of the css color module.
... they are now deprecated.

Event developer guide - Developer guides
the different types of user interaction-driven events include: the original 'click' event, mouse events, mouse gesture events, and both touch events and the earlier mozilla experimental touch events, now deprecated.
... the modification of the web page in structure or content might trigger some events, as explained in the mutation events page, but the use of these events has been deprecated in favour of the lighter mutation observer approach.

<body>: The Document Body element - HTML: Hypertext Markup Language
recommendation obsoleted the formerly deprecated attributes.
... recommendation deprecated the alink, background, bgcolor, link, text and vlink attributes.

<caption>: The Table Caption element - HTML: Hypertext Markup Language
deprecated attributes the following attributes are deprecated and should not be used.
... usage note: do not use this attribute, as it has been deprecated.

<dir>: The Directory element (obsolete) - HTML: Hypertext Markup Language
though present in early html specifications, it has been deprecated in html 4, and has since been removed entirely.
... usage note: do not use this attribute, as it has been deprecated: the <dir> element should be styled using css.

manifest - HTML: Hypertext Markup Language
note: manifest-based caching mechanism has been deprecated.
... recommendation added support for the manifest attribute and deprecated it later ...

<html>: The HTML Document / Root element - HTML: Hypertext Markup Language
recommendation added support for the manifest attribute (deprecated later).
... recommendation deprecated the version attribute ...

<isindex> - HTML: Hypertext Markup Language
it was deprecated in html 4.01.
... isindex element deprecated in html 4.01 isindex in html 3.2 isindex in html 2.0 as well the description of the behavior in queries and indexes (html 2.0) isindex in html+ ...

<ol>: The Ordered List element - HTML: Hypertext Markup Language
recommendation added reversed and start attributed; un-deprecated type html 4.01 specificationthe definition of '<ol>' in that specification.
... recommendation deprecated compact and type.

<strike> - HTML: Hypertext Markup Language
usage note: this element is deprecated in html 4 and xhtml 1, and obsoleted in html5.
... recommendation make deprecated in favor of <del> and <s>.

<tr>: The Table Row element - HTML: Hypertext Markup Language
there are also several deprecated attributes, which you should avoid but may need to know when reading older code.
... deprecated attributes the following attributes may still be implemented in browsers but are no longer part of the html specification and may be missing or may not work as expected.

<ul>: The Unordered List element - HTML: Hypertext Markup Language
warning: do not use this attribute, as it has been deprecated: use css instead.
... warning: do not use this attribute, as it has been deprecated; use the css list-style-type property instead.

HTML elements reference - HTML: Hypertext Markup Language
obsolete and deprecated elements warning: these are old html elements which are deprecated and should not be used.
... <applet> the obsolete html applet element (<applet>) embeds a java applet into the document; this element has been deprecated in favor of <object>.

CSP: report-uri - HTTP
the deprecated http content-security-policy (csp) report-uri directive instructs the user agent to report attempts to violate the content security policy.
... though the report-to directive is intended to replace the deprecated report-uri directive, report-to isn’t supported in most browsers yet.

HTTP headers - HTTP
custom proprietary headers have historically been used with an x- prefix, but this convention was deprecated in june 2012 because of the inconveniences it caused when nonstandard fields became standard in rfc 6648; others are listed in an iana registry, whose original content was defined in rfc 4229.
... http public key pinning (hpkp) http public key pinning has been deprecated and removed in favor of certificate transparency and expect-ct.

Inheritance and the prototype chain - JavaScript
should-be-deprecated and ill-performant.
... grossly deprecated and non-performant.

Warning: 08/09 is not a legal ECMA-262 octal constant - JavaScript
note that octal literals and octal escape sequences are deprecated and will present an additional deprecation warning.
... examples invalid octal numbers 08; 09; // syntaxerror: 08 is not a legal ecma-262 octal constant // syntaxerror: "0"-prefixed octal literals and octal escape sequences // are deprecated valid octal numbers use a leading zero followed by the letter "o"; 0o755; 0o644; ...

Date.prototype.toGMTString() - JavaScript
note: togmtstring() is deprecated and should no longer be used.
... var today = new date(); var str = today.togmtstring(); // deprecated!

Function.arguments - JavaScript
description the syntax function.arguments is deprecated.
...deprecated in favor of arguments in ecmascript 3.

Function - JavaScript
this is deprecated as a property of function.
... this property is deprecated, and is only functional for some non-strict functions.

Object.prototype.__defineGetter__() - JavaScript
this feature is deprecated in favor of defining getters using the object initializer syntax or the object.defineproperty() api.
... examples non-standard and deprecated way var o = {}; o.__definegetter__('gimmefive', function() { return 5; }); console.log(o.gimmefive); // 5 standard-compliant ways // using the get operator var o = { get gimmefive() { return 5; } }; console.log(o.gimmefive); // 5 // using object.defineproperty var o = {}; object.defineproperty(o, 'gimmefive', { get: function() { return 5; } }); console.log(o.gimmefive); // 5 specif...

Object.prototype.__defineSetter__() - JavaScript
this feature is deprecated in favor of defining setters using the object initializer syntax or the object.defineproperty() api.
... examples non-standard and deprecated way var o = {}; o.__definesetter__('value', function(val) { this.anothervalue = val; }); o.value = 5; console.log(o.value); // undefined console.log(o.anothervalue); // 5 standard-compliant ways // using the set operator var o = { set value(val) { this.anothervalue = val; } }; o.value = 5; console.log(o.value); // undefined console.log(o.anothervalue); // 5 // using object.defineproperty var...

Object.prototype.__proto__ - JavaScript
it is deprecated in favor of object.getprototypeof/reflect.getprototypeof and object.setprototypeof/reflect.setprototypeof (though still, setting the [[prototype]] of an object is a slow operation that should be avoided if performance is a concern).
...// deprecated.

RegExp.prototype.compile() - JavaScript
the deprecated compile() method is used to (re-)compile a regular expression during execution of a script.
... description the compile method is deprecated.

Values - MathML
constants a replacement for the deprecated constants below is: veryverythinmathspace => 0.05555555555555555em verythinmathspace => 0.1111111111111111em thinmathspace => 0.16666666666666666em mediummathspace => 0.2222222222222222em thickmathspace => 0.2777777777777778em verythickmathspace => 0.3333333333333333em veryverythickmathspace => 0.3888888888888889em constant value veryve...
...ird 7.0 / seamonkey 2.4) (bug 650530) negativeveryverythinmathspace -1/18em negativeverythinmathspace -2/18em negativethinmathspace -3/18em negativemediummathspace -4/18em negativethickmathspace -5/18em negativeverythickmathspace -6/18em negativeveryverythickmathspace -7/18em note: namedspace binding is deprecated in mathml3 and has been removed in gecko 15.0 (firefox 15.0 / thunderbird 15.0 / seamonkey 2.12) (bug 673759).

<mmultiscripts> - MathML
this property is deprecated and will be removed in the future.
... this property is deprecated and will be removed in the future.

<msubsup> - MathML
this attribute is deprecated and will be removed in the future.
... this attribute is deprecated and will be removed in the future.

Web video codec guide - Web media technologies
however, few web browsers support mpeg-1 video without the support of a plugin, and with plugin use deprecated in web browsers, these are generally no longer available.
... however, few web browsers support mpeg-2 without the support of a plugin, and with plugin use deprecated in web browsers, these are generally no longer available.

SVG Conditional Processing Attributes - SVG: Scalable Vector Graphics
externalresourcesrequired requiredextensions requiredfeatures systemlanguage attributes externalresourcesrequired deprecated since svg 2 if set to true, it indicates that the browser must wait for all the external resources necessary to render that element to be loaded before processing the associated element.
... value: a list of space-separated uri; animatable: no requiredfeatures deprecated since svg 2 list all the features, as defined is the svg 1.1 specification, that must be supported by the borwser to be allowed to render the associated element..

d - SVG: Scalable Vector Graphics
value <string> default value none animatable yes glyph warning: as of svg2 <glyph> is deprecated and shouldn't be used.
... missing-glyph warning: as of svg2 <missing-glyph> is deprecated and shouldn't be used.

href - SVG: Scalable Vector Graphics
if the href attribute or the deprecated xlink:href attribute is not provided, then the target element will be the immediate parent element of the current animation element.
... note: unlike other animation elements, the <discard> element does not support the deprecated xlink:href attribute.

requiredFeatures - SVG: Scalable Vector Graphics
to detect availability of an svg feature from script, there is the (also deprecated) domimplementation.hasfeature() method.
...however, the svg 1.0 feature strings are considered deprecated.

self - Archive of obsolete content
self provides: access to the options object access to the port object access to a mostly deprecated messaging api for an overview of content scripts, see the main article.

Testing the Add-on SDK - Archive of obsolete content
with cfx cfx tests use the deprecated sdk/loader/cuddlefish, which is being replaced by toolkit/loader.

tabs - Archive of obsolete content
this property is deprecated.

content/content - Archive of obsolete content
deprecated in firefox 32.

loader/cuddlefish - Archive of obsolete content
deprecated in firefox 38.

Release notes - Archive of obsolete content
deprecated widget in favor of the new ui modules.

console - Archive of obsolete content
console.debug(...) deprecated, you should use console.log() instead.

Getting started (cfx) - Archive of obsolete content
cfx has been deprecated and you should use jpm instead.

File I/O - Archive of obsolete content
here are some of the special locations the directory service supports: (scope: d = product-wide, f = profile wide) string scope meaning achrom d %curprocd%/chrome aplugns d %curprocd%/plugins (deprecated - use aplugnsdl) aplugnsdl d comsd n/a %curprocd%/components curprocd n/a current working directory (usually the application's installation directory).

Preferences - Archive of obsolete content
note: during gecko 13 development, nsiprefbranch2 was deprecated, and its methods moved to nsiprefbranch.

View Source for XUL Applications - Archive of obsolete content
deprecated api this api is likely to go away in the future, and should no longer be used.

Windows - Archive of obsolete content
in particular the components.classes is undefined and the components object is deprecated.

Custom about: URLs - Archive of obsolete content
services.io.newchannel was deprecated, and the signature of the newchannel method changed.

How to convert an overlay extension to restartless - Archive of obsolete content
(note that the usage of an octal integer literal, while standard for handling permissions, is dangerous and deprecated; usage of use es5 strict mode to disable this and other foot-guns is recommended) if you need to read/manipulate binary data, a nsibinaryinputstream instance is what you'll use on that stream (e.g.

Migrating from Internal Linkage to Frozen Linkage - Archive of obsolete content
the following functions, however, are implemented in the glue library and can be used from frozen-linkage code: ns_newarrayenumerator (excluding deprecated nsisupportsarray version) ns_newemptyenumerator ns_newunionenumerator nscrt functions in nscrt.h are not available to frozen-linkage code.

Appendix E: DOM Building and Insertion (HTML & XUL) - Archive of obsolete content
generating scripts in this matter is deprecated and should be avoided wherever possible, but is relatively safe and sometimes acceptable.

Performance best practices in extensions - Archive of obsolete content
as mutation events are officially deprecated, and there are many alternatives, they should be avoided at all costs.

Setting up an extension development environment - Archive of obsolete content
detect deprecated code use.

Promises - Archive of obsolete content
promise apis for common asynchronous operations due to the performance and stability costs of synchronous io, many apis which rely on it have been deprecated.

Using Dependent Libraries In Extension Components - Archive of obsolete content
// deprecated api calls have been removed.

Search Extension Tutorial (Draft) - Archive of obsolete content
while it is possible to achieve similar effects by changing the keyword.url preference, this method is deprecated and should not be used.

DOMSubtreeModified - Archive of obsolete content
this event has been deprecated in favor of the mutation observer api this event can cause infinite loops if you decide to change the dom inside the event handler, hence it has been disabled in a number of browsers (see domattrmodified and domsubtreemodified events are no longer fired when style attribute is changed via cssom for example).

Index of archived content - Archive of obsolete content
lendarview calicalendarviewcontroller califiletype mozilla.dev.platform faq reftest opportunities files symsrv_convert xbdesignmode.js archived open web documentation browser detection and cross browser support browser feature detection displaying notifications (deprecated) e4x e4x for templating processing xml with e4x e4x tutorial accessing xml children descendants and filters introduction namespaces the global xml object iterator liveco...

Install.js - Archive of obsolete content
the majority of this api is now deprecated and as of gecko 1.9 no longer available.

Bypassing Security Restrictions and Signing Code - Archive of obsolete content
the privilege manager has been deprecated in firefox 12 and disabled in firefox 17.

Drag and Drop - Archive of obsolete content
next » as of gecko 1.9.1 (firefox 3.5), these apis are officially deprecated the newer, simpler, portable api should be used in their place.

Error Console - Archive of obsolete content
the error console is deprecated in firefox, and is now only made available if you set the devtools.errorconsole.enabled preference to true.

CRMF Request object - Archive of obsolete content
deprecatedthis feature has been removed from the web standards.

generateCRMFRequest() - Archive of obsolete content
deprecatedthis feature has been removed from the web standards.

importUserCertificates - Archive of obsolete content
deprecatedthis feature has been removed from the web standards.

popChallengeResponse - Archive of obsolete content
deprecatedthis feature has been removed from the web standards.

JavaScript crypto - Archive of obsolete content
deprecatedthis feature has been removed from the web standards.

Java in Firefox Extensions - Archive of obsolete content
liveconnect gives your extension's javascript code (linked from or contained in xul code) access to 2 objects: java and packages (note that per this thread, although the new documentation for the liveconnect reimplementation states that these globals will be deprecated (in the context of applets), "firefox and the java plug-in will continue to support the global java/packages keywords, in particular in the context of firefox extensions.").

Migrate apps from Internet Explorer to Mozilla - Archive of obsolete content
getyear was deprecated in ecmascript version 3 and replaced with getfullyear().

Monitoring downloads - Archive of obsolete content
try to avoid using it.this interface is deprecated as of firefox 26.

Supporting private browsing mode - Archive of obsolete content
this interface is deprecated since firefox 20, and will probably be completely removed in firefox 21.see supporting per-window private browsing for details.

Running Tamarin performance tests - Archive of obsolete content
performance test options there are a variety of options available with runtests.py - here is the help text followed by explanations for some options: $ ./runtests.py -h usage: runtests.py [options] [tests] -v --verbose enable additional output -e --avm avmplus command to use -a --asc compiler to use -g --globalabc deprecated but still works - use builtin.abc (used to be location of global.abc) -b --builtinabc location of builtin.abc -s --shellabc location of shell_toplevel.abc -x --exclude comma separated list of directories to skip -h --help display help and exit -t --notime do not generate timestamps (cleaner diffs) -f --forcerebuild force rebuild all test files -c --config set...

URIs and URLs - Archive of obsolete content
noteable differences necko does not support certain deprecated forms of relative urls, based on the following part of rfc 2396: if the scheme component is defined, indicating that the reference starts with a scheme name, then the reference is interpreted as an absolute uri and we are done.

Using XPInstall to Install Plugins - Archive of obsolete content
the majority of this api is now deprecated and as of gecko 1.9 no longer available.

Methods - Archive of obsolete content
the majority of this api is now deprecated and as of gecko 1.9 no longer available.

File Object - Archive of obsolete content
the majority of this api is now deprecated and as of gecko 1.9 no longer available.

InstallVersion Object - Archive of obsolete content
the majority of this api is now deprecated and as of gecko 1.9 no longer available.

registerChrome - Archive of obsolete content
description when the third parameter is omitted (pointing to a specific location within the xpi file), this function is being used in a somewhat deprecated way.

Methods - Archive of obsolete content
the majority of this api is now deprecated and as of gecko 1.9 no longer available.

Properties - Archive of obsolete content
the majority of this api is now deprecated and as of gecko 1.9 no longer available.

Install Object - Archive of obsolete content
the majority of this api is now deprecated and as of gecko 1.9 no longer available.

Methods - Archive of obsolete content
the majority of this api is now deprecated and as of gecko 1.9 no longer available.

WinProfile Object - Archive of obsolete content
the majority of this api is now deprecated and as of gecko 1.9 no longer available.

Methods - Archive of obsolete content
the majority of this api is now deprecated and as of gecko 1.9 no longer available.

WinReg Object - Archive of obsolete content
the majority of this api is now deprecated and as of gecko 1.9 no longer available.

XPInstall API reference - Archive of obsolete content
the majority of this api is now deprecated and as of gecko 1.9 no longer available.

XPInstall - Archive of obsolete content
the majority of this api is now deprecated and as of gecko 1.9 no longer available.

emptytext - Archive of obsolete content
« xul reference home emptytext deprecated since gecko 2 type: string a string that appears in the textbox when it has no value.

textbox.type - Archive of obsolete content
the timed type is deprecated in gecko 1.9.1 and the search textbox may be used instead.

Attribute (XUL) - Archive of obsolete content
tcontextmenu contenttooltip context contextmenu control crop curpos current currentset customindex customizable cycler datasources decimalplaces default defaultbutton defaultset description dir disableautocomplete disableautoselect disableclose disabled disablehistory disablekeynavigation disablesecurity dlgtype dragging editable editortype element empty emptytext deprecated since gecko 2 enablecolumndrag enablehistory equalsize eventnode events expr firstdayofweek firstpage first-tab fixed flags flex focused forcecomplete grippyhidden grippytooltiptext group handlectrltab height helpuri hidden hidechrome hidecolumnpicker hideheader hideseconds hidespinbuttons highlightnonmatches homepage href icon id ignoreblurwhilesearching ignorec...

showPopup - Archive of obsolete content
« xul reference home showpopup( element, x, y, popuptype, anchor, align ) deprecated since gecko 1.9 return type: no return value deprecated in favor of openpopup and openpopupatscreen opens a popup element.

ContextMenus - Archive of obsolete content
in firefox 3.6 and earlier, the document's popupnode property was used; this is now deprecated.

Menus - Archive of obsolete content
the popup tag is deprecated but is equivalent to the menupopup tag.

emptyText - Archive of obsolete content
« xul reference emptytext deprecated since gecko 2 type: string gets and sets a string that appears in the textbox when it has no value.

Property - Archive of obsolete content
customtoolbarcount database datasources date dateleadingzero datevalue decimalplaces decimalsymbol defaultbutton defaultvalue description dir disableautocomplete disableautocomplete disableautoselect disabled disablekeynavigation dlgtype docshell documentcharsetinfo editable editingcolumn editingrow editingsession editor editortype emptytext deprecated since gecko 2 enablecolumndrag eventnode firstordinalcolumn firstpermanentchild flex focused focuseditem forcecomplete group handlectrlpageupdown handlectrltab hasuservalue height hidden hideseconds highlightnonmatches homepage hour hourleadingzero id ignoreblurwhilesearching image increment inputfield inverted is24hourclock ispm issearchin...

textbox (Toolkit autocomplete) - Archive of obsolete content
the timed type is deprecated in gecko 1.9.1 and the search textbox may be used instead.

Textbox (XPFE autocomplete) - Archive of obsolete content
the timed type is deprecated in gecko 1.9.1 and the search textbox may be used instead.

Creating an Installer - Archive of obsolete content
the majority of this api is now deprecated and as of gecko 1.9 no longer available.

XUL Reference - Archive of obsolete content
s conditions content member param query queryset rule template textnode triple where script commandset command broadcaster broadcasterset observes key keyset stringbundle stringbundleset arrowscrollbox dropmarker grippy scrollbar scrollcorner spinbuttons all attributes all properties all methods attributes defined for all xul elements style classes event handlers deprecated/defunct markup ...

XUL controls - Archive of obsolete content
<textbox type="search"/> textbox reference <textbox type="timed"> deprecated in gecko 1.9.1 a textbox for responding to user input.

menupopup - Archive of obsolete content
showpopup( element, x, y, popuptype, anchor, align ) deprecated since gecko 1.9 return type: no return value deprecated in favor of openpopup and openpopupatscreen opens a popup element.

tooltip - Archive of obsolete content
showpopup( element, x, y, popuptype, anchor, align ) deprecated since gecko 1.9 return type: no return value deprecated in favor of openpopup and openpopupatscreen opens a popup element.

Archived Mozilla and build documentation - Archive of obsolete content
liveconnect gives your extension's javascript code (linked from or contained in xul code) access to 2 objects: java and packages (note that per this thread, although the new documentation for the liveconnect reimplementation states that these globals will be deprecated (in the context of applets), "firefox and the java plug-in will continue to support the global java/packages keywords, in particular in the context of firefox extensions.").

Adobe Flash - Archive of obsolete content
the former is part of the w3c html 4 standard, whereas the latter is a deprecated element, as discussed in using the right markup to invoke plugins.

Theme changes in Firefox 3 - Archive of obsolete content
changes in browser --- changes in global all platforms the yellow background for the location bar has been deprecated; instead, themes should style the new #identity-box element depending on its verifieddomain/verifiedidentity class.

Scratchpad - Archive of obsolete content
scratchpad is deprecated as of firefox 70 (bug 1565380), and will be removed as of firefox 72 (bug 1519103).

Using the W3C DOM - Archive of obsolete content
deprecated coding practices appropriate dom 2 replacements ie5+: elemref.style.pixelleft dom level 2: parseint(elemref.style.left, 10) ie5+: elemref.style.pixeltop dom level 2: parseint(elemref.style.top, 10) ie5+: elemref.style.pixelleft = x; elemref.style.pixeltop = y; dom level 2: elemref.style.left = x + "px"; elemref.style.top = y + "px"; w3c do...

Using Web Standards in your Web Pages - Archive of obsolete content
the first 2 sections address exclusively validation issues, benefits of validation, deprecated elements, deprecated attributes.

-moz-border-bottom-colors - Archive of obsolete content
formal syntax <color>+ | nonewhere <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?

-moz-border-left-colors - Archive of obsolete content
formal syntax <color>+ | nonewhere <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?

-moz-border-right-colors - Archive of obsolete content
formal syntax <color>+ | nonewhere <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?

-moz-border-top-colors - Archive of obsolete content
formal syntax <color>+ | nonewhere <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?

-ms-filter - Archive of obsolete content
important: as of windows internet explorer 9 this feature was deprecated.

-ms-scrollbar-3dlight-color - Archive of obsolete content
formal syntax <color>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?

-ms-scrollbar-arrow-color - Archive of obsolete content
formal syntax <color>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?

-ms-scrollbar-base-color - Archive of obsolete content
formal syntax <color>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?

-ms-scrollbar-darkshadow-color - Archive of obsolete content
formal syntax <color>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?

-ms-scrollbar-face-color - Archive of obsolete content
formal syntax <color>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?

-ms-scrollbar-highlight-color - Archive of obsolete content
formal syntax <color>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?

-ms-scrollbar-shadow-color - Archive of obsolete content
formal syntax <color>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?

-ms-scrollbar-track-color - Archive of obsolete content
formal syntax <color>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?

E4X for templating - Archive of obsolete content
warning: e4x is deprecated.

Accessing XML children - Archive of obsolete content
« previousnext » accessing xml children warning: e4x is deprecated.

E4X Tutorial - Archive of obsolete content
next » warning: e4x is deprecated.

Array.observe() - Archive of obsolete content
however, this api has been deprecated and removed from browsers.

Array.unobserve() - Archive of obsolete content
the array.unobserve() method was used to remove observers set by array.observe(), but has been deprecated and removed from browsers.

Date.prototype.toLocaleFormat() - Archive of obsolete content
see warning: date.prototype.tolocaleformat is deprecated for more information and migration help.

Expression closures - Archive of obsolete content
the expression closure syntax is a deprecated firefox-specific feature and has been removed starting with firefox 60.

New in JavaScript 1.4 - Archive of obsolete content
new features in javascript 1.4 exception handling (throw and try...catch) in operator instanceof operator changed functionality in javascript 1.4 eval() changes (cannot be called indirectly and no longer a method of object) arguments not a property of functions deprecated function.arity in favor of function.length changes to liveconnect ...

New in JavaScript 1.8 - Archive of obsolete content
</script> another way (not recommended) to do this is to use the deprecated <script> language attribute and define it as "javascript1.8".

New in JavaScript - Archive of obsolete content
javascript versions deprecated ( ).

Object.getNotifier() - Archive of obsolete content
the object.getnotifer() method was used to create an object that allows to synthetically trigger a change, but has been deprecated and removed in browsers.

Object.observe() - Archive of obsolete content
however, this api has been deprecated and removed from browsers.

Object.unobserve() - Archive of obsolete content
the object.unobserve() method was used to remove observers set by object.observe(), but has been deprecated and removed from browsers.

Object.prototype.unwatch() - Archive of obsolete content
these two methods were implemented only in firefox prior to version 58, they're deprecated and removed in firefox 58+.

Object.prototype.watch() - Archive of obsolete content
these two methods were implemented only in firefox prior to version 58, they're deprecated and removed in firefox 58+.

Reflect.enumerate() - Archive of obsolete content
the static reflect.enumerate() method used to return an iterator with the enumerable own and inherited properties of the target object, but has been removed in ecmascript 2016 and is deprecated in browsers.

handler.enumerate() - Archive of obsolete content
the handler.enumerate() method used to be a trap for for...in statements, but has been removed from the ecmascript standard in es2016 and is deprecated in browsers.

Writing JavaScript for XHTML - Archive of obsolete content
solution: avoid html-specific dom the html dom , even though it is compatible with xhtml 1.0, is not guaranteed to work with future versions of xhtml (perhaps especially the formatting properties which have been deprecated as element attributes).

Archived open Web documentation - Archive of obsolete content
browser feature detection an experimental approach to discovering degree of support for standards css obsolete css features displaying notifications (deprecated) firefox offers support for "desktop notifications"; these are notifications that are displayed to the user outside the context of the web content, using the standard notification system provided by the operating system.

Index - Game development
40 asm.js deprecated, javascript, asm.js asm.js is a specification defining a subset of javascript that is highly optimizable.

Bounding volume collision detection with THREE.js - Game development
box and sphere using boxhelper as an alternative to using raw box3 and sphere objects, three.js has a useful object to make handling bounding boxes easier: boxhelper (previously boundingboxhelper, which has been deprecated).

Plug-in Development Overview - Gecko Plugin API Reference
note: the resource method described below is deprecated.

Beginner's guide to media queries - Learn web development
note: there were a number of other media types defined in the level 3 media queries specification; these have been deprecated and should be avoided.

HTML table advanced features and accessibility - Learn web development
we'd recommend using the <caption> element instead, however, as summary is deprecated by the html5 spec, and can't be read by sighted users (it doesn't appear on the page.) active learning: adding a caption let's try this out, revisiting an example we first met in the previous article.

Index - Learn web development
assets, beginner, composing, content, deprecated, design, fonts, learn, simple, l10n:priority, step by step before doing anything, you need some ideas.

Object prototypes - Learn web development
note: it's important to understand that there is a distinction between an object's prototype (available via object.getprototypeof(obj), or via the deprecated __proto__ property) and the prototype property on constructor functions.

Handling common JavaScript problems - Learn web development
in the background, it uses the best api the browser has available for storing the data, whether that is indexeddb, web storage, or even websql (which is now deprecated, but is still supported in some older versions of safari/ie).

Accessibility API cross-reference
can select more than one of the children multiselectable multiselectable multi_selectable aria-multiselectable=true currently off-screen offscreengrouping n/a n/a n/a indicates that every pixel is painted within the object's rectangular region n/a opaque opaque n/a bgcolor (deprecated in favor of css background-color) object is currently pressed down.

Theme concepts
if you have a lightweight theme it will be converted to this new theme format automatically before lightweight themes are deprecated.

Themes
browser themes browser theme concepts get an introduction to creating themes for the latest versions of firefox using the amo theme generator use the theme generator to create and submit a new theme to amo lightweight themes lightweight themes have been deprecated and are no longer accepted by amo.

Adding a new CSS property
while we implement the string api in terms of the value api, we generally don't care much about the deprecated primitive value api, so in cases where there's some new structure, you should generally create the simplest structure of primitive values that will produce the right string.

Testopia
api users take note: positional parameters are now deprecated.

Chrome registration
this format is deprecated; however, seamonkey versions before version 2 do not support the plaintext manifest format yet, so contents.rdf manifests are required for extensions that wish to maintain backwards compatibility with firefox 1.0 or the suite.

Creating a Firefox sidebar
as of firefox 23, the addpanel and addpersistentpanel functions have been removed from the deprecated, netscape-derived window.sidebar object.

Makefile - variables
deprecated?

Simple Firefox for Android build
deprecated: this documentation has moved, please visit geckoview-quick-start for up-to-date documentation on building geckoview for android.

SVG Guidelines
here's an example taking into account the list below: version x="0" and y="0" enable-background (unsupported by gecko and now deprecated by the filter effects specification) id (id on root element has no effect) xmlns:xlink attribute when there are no xlink:href attributes used throughout the file other unused xml namespace definitions xml:space when there is no text used in the file other empty tags, this may be obvious, but those are sometimes found in svgs unreferenced ids (usually on gradient stops, but also on shape...

Message manager overview
this usage is deprecated because the add-on sdk uses "content script" to refer to a similar but different kind of script.

Message manager overview
ode that needs direct access to content into separate scripts, which are called "frame scripts" use a frame message manager to load these frame scripts into the content process use the frame message manager api to communicate with the frame script some older articles on multiprocess firefox and the message manager might refer to "content scripts" instead of "frame scripts", but this usage is deprecated because the add-on sdk uses "content script" to refer to a similar but different kind of script.

Performance best practices for Firefox front-end engineers
use the compositor for animations performing animations on the main thread should be treated as deprecated.

mozbrowserselectionstatechanged
note that this is deprecated, and current implementations should use mozbrowsercaretstatechanged instead.

CustomizableUI.jsm
area_addonbar deprecated string "addon-bar", a constant reference to the id of the add-on toolbar shim.

DownloadLastDir.jsm
to set the path, use setfile: // file is an nsifile downloadlastdir.setfile(uri, file); to retrieve the path in firefox 26 or later, use getfileasync: downloadlastdir.getfileasync(uri, function (file) { // file is an nsifile console.log(file); }); deprecated since gecko 26.0 to retrieve the path in firefox 25 or earlier, use getfile: // file is an nsifile var file = gdownloadlastdir.getfile(uri); console.log(file); private browsing mode when browsing normally, the browser uses the browser.download.lastdir preference to store the last download directory path.

Log.jsm
warn use of deprecated apis, poor use of api, 'almost' errors, other runtime situations that are undesirable or unexpected, but not necessarily "wrong".

PromiseWorker.jsm
supported built-in javascript error are following: evalerror internalerror rangeerror referenceerror syntaxerror typeerror urierror in addition to them, stopiteration is also supported (note that stopiteration is deprecated).

Fonts for Mozilla's MathML engine
note: a deprecated version of stix is preinstalled starting with os x lion and should ensure relatively good mathml rendering.

Mozilla MathML Status
an overview of the mathml 3 elements/attributes - excluding deprecated ones - and the current status of the native support.

Nonblocking IO In NSPR
<tt>pr_select()</tt> is deprecated, now declared in <tt>private/pprio.h</tt>.

PR_NewTCPSocket
see also pr_newtcpsocket is deprecated because it is hardcoded to create an ipv4 tcp socket.

PR_NewUDPSocket
see also pr_newudpsocket is deprecated because it is hardcoded to create an ipv4 udp socket.

PR_Seek
deprecated in favor of pr_seek64.

NSS_3.12.2_release_notes.html
bug 455424: nssilckt.h defines the enumeration constant 'lock' bug 456036: stubs for deprecated functions in lib/certdb/stanpcertdb.c should set the pr_not_implemented_error error.

NSS 3.14 release notes
these functions are intended to replace the now-deprecated use of the ssl_enable_ssl3 and ssl_enable_tls socket options.

NSS 3.15 release notes
new macros in ssl.h ssl_enable_ocsp_stapling - used with ssl_optionset to configure tls client sockets to request the certificate_status extension (eg: ocsp stapling) when set to pr_true notable changes in nss 3.15 secitem_reallocitem is now deprecated.

NSS 3.28.3 release notes
with this nss release seckeyecpublickey.encoding is deprecated.

NSS 3.28 release notes
the old ssl_signatureprefset and ssl_signatureprefset functions are now deprecated.

NSS 3.29.1 release notes
with this nss release seckeyecpublickey.encoding is deprecated.

NSS 3.35 release notes
for the sslsignaturescheme enum, the enumerated values ssl_sig_rsa_pss_sha* are deprecated in response to a change in tls 1.3.

NSS 3.55 release notes
bug 1653202 - fix initialization bug in blapitest when compiled with nss_disable_deprecated_seed.

NSS 3.56 release notes
bug 1652729 - add build flag to disable rc2 and relocate to lib/freebl/deprecated.

NSS API Guidelines
those files have a trailing "f," and their use should be deprecated.

NSS reference
secmod_loadusermodule secmod_unloadusermodule secmod_closeuserdb secmod_openuserdb pk11_findcertfromnickname pk11_findkeybyanycert pk11_getslotname pk11_gettokenname pk11_ishw pk11_ispresent pk11_isreadonly pk11_setpasswordfunc ssl functions based on "ssl functions" in the ssl reference and "ssl functions" and "deprecated ssl functions" in nss public functions.

OLD SSL Reference
ssl_peercertificate ssl_revealurl ssl_revealpinarg ssl handshake functions ssl_forcehandshake ssl_rehandshake ssl_resethandshake nss shutdown function nss_shutdown deprecated functions ssl_enabledefault ssl_enable ssl_enablecipher ssl_setpolicy ssl_redohandshake chapter 5 certificate functions this chapter describes the functions and related types used to work with a certificate database such as the cert7.db database provided with communicator.

Small Footprint
smalljs.jar ant build script in rhino supports smalljar target that will generate smalljs.jar that does not include tools, optimizer, javaadapter and class generation library, regular expressions, e4x implementataion and deprecated files.

Creating JavaScript jstest reftests
earlier we discussed the deprecated approach of using the -n naming scheme to identify tests whose passed, failed status is flipped by the post test processing code in jsdriver.pl and post-process-logs.pl.

Tracing JIT
this document is talking about deprecated feature.

JSAPI User Guide
the jsapi provides a data type, js::value (also with a deprecated jsval typedef), which can contain javascript values of any type.

JSConvertOp
other types may be passed as hints, but such behavior is deprecated.

JSFUN_BOUND_METHOD
its use is deprecated.

JSMarkOp
in spidermonkey 1.8, jsmarkop will be deprecated.

JSNative
the preferred way to implement a function is to use the js::callargs structure defined there; the macros providing equivalent functionality are deprecated.

JSVAL_LOCK
syntax jsval_lock(cx,v) description jsval_lock is a deprecated feature that is supported only for backward compatibility with existing applications.

JSVAL_UNLOCK
syntax jsval_unlock(cx,v) description jsval_unlock is a deprecated feature that is supported only for backward compatibility with existing applications.

JS_AliasElement
this feature is deprecated, meaning that it is currently supported only for backward compatibility with existing applications.

JS_CompileUTF8File
js_compileutf8file is deprecated, use file, use js::compile instead.

JS_CompileUTF8FileHandle
js_compileutf8filehandle and js_compileutf8filehandleforprincipals are deprecated, use file, use js::compile instead.

JS_DefineProperty
these functions can currently replace jsprop_permanent properties, but such usage is deprecated.

JS_Lock
description js_lock is a deprecated api; don't use it.

JS_LockGCThing
description js_lockgcthing is a deprecated function that protects a specified item, thing, associated with an executable script context, cx, from garbage collection.

JS_NewRuntime
syntax jsruntime * js_newruntime(uint32_t maxbytes, uint32_t maxnurserybytes = js::defaultnurserybytes, jsruntime *parentruntime = nullptr); jsruntime * js_newruntime(uint32_t maxbytes, jsusehelperthreads usehelperthreads, jsruntime *parentruntime = nullptr); // deprecated since jsapi 32 name type description maxbytes uint32 maximum number of allocated bytes after which garbage collection is run.

JS_SetCheckObjectAccessCallback
this function is deprecated.

JS_SetObjectPrincipalsFinder
this function is deprecated.

JS_SetPrincipalsTranscoder
this function is deprecated.

JS_SetThreadStackLimit
this is deprecated, use js_setnativestackquota instead.

JS_Unlock
description js_unlock is a deprecated api; don't use it.

JSAPI reference
8 js::falsehandlevalue added in spidermonkey 38 jsval constants: jsval_null obsolete since jsapi 42 jsval_void obsolete since jsapi 42 jsval_true obsolete since jsapi 42 jsval_false obsolete since jsapi 42 jsval_zero obsolete since jsapi 42 jsval_one obsolete since jsapi 42 function and macros for checking the type of a jsval: enum jstype js_typeofvalue all of the following are deprecated.

A Web PKI x509 certificate primer
se are the recomendations of bit sizes (from http://www.keylength.com/): asymmetric ecc(key) hash linestra(2004) 1902 172 172 ecrypt 2012 2432 224 224 nist 2012 2048 224 224 anssi 2010 4096 200 256 rfc 3766 2358 200 --- bsi 1976 256 256 in other words, sha1 is now deprecated for new uses.

Gecko object attributes
applied to: any object that supports the hypertext interface note: deprecated, use display attribute instead line-number the current line number of the caret, whether simply because the "browse with caret" option is on, or the caret used for editing text.

FUEL
fuel is deprecated as of firefox 40 and removed as of firefox 47.

STEEL
steel is deprecated and will be removed as of thunderbird 52.

Preface
it is badly out of date, and much of what it says is either no longer remotely accurate, or is severely deprecated.

Components.utils.exportFunction
allowcallbacks: deprecated/redundant from firefox 34.

XPConnect wrappers
this is now deprecated and we are in the process of removing support for it.

mozIStorageStatementWrapper
firefox 3.5 note firefox 3.5 adds support for these features directly into the mozistoragestatement interface, so this interface is essentially deprecated.

nsIAutoCompleteListener
xpfe/components/autocomplete/public/nsiautocompletelistener.idlscriptable this interface is deprecated.

nsICacheService
exceptions thrown ns_error_not_implemented this method is deprecated.

nsICompositionStringSynthesizer
esizer.appendclause("bar".length, compositionstringsynthesizer.attr_selectedconvertedtext); compositionstringsynthesizer.appendclause("-buzz".length, compositionstringsynthesizer.attr_convertedtext); compositionstringsynthesizer.setcaret("foo-bar".length, 0); compositionstringsynthesizer.dispatchevent(); finally, when you commits composition with the last composition string "foo-bar-buzz": // deprecated in 36, first, dispatch commit string without clause information compositionstringsynthesizer.setstring("foo-bar-buzz"); compositionstringsynthesizer.dispatchevent(); // then, dispatch compositionend with the commit string domwindowutils.sendcompositionevent("compositionend", "foo-bar-buzz", ""); starting gecko 36, you can do it simpler: domwindowutils.sendcompositionevent("compositioncommitas...

nsIConsoleService
see also error console (deprecated) web console browser console nsiconsolemessage ...

nsIDOMEvent
nseventptr getinternalnsevent(); violates the xpcom interface guidelines boolean getpreventdefault(); deprecated since gecko 16.0 void initevent(in domstring eventtypearg, in boolean canbubblearg, in boolean cancelablearg); boolean isdispatchstopped(); violates the xpcom interface guidelines void preventbubble(); obsolete since gecko 24 void preventcapture(); obsolete since gecko 24 void preventdefault(); void serialize(in ipcmessageptr amsg, in boolean...

nsIDOMNSHTMLDocument
void captureevents( in long eventflags ); parameters eventflags clear() used to reset a document to blank, but deprecated since gecko 1.0 and provided for compatibility with netscape 4.x; use open() and close() instead.

nsIDOMWindow
66 introduced gecko 1.0 deprecated gecko 44 inherits from: nsisupports last changed in gecko 7.0 (firefox 7.0 / thunderbird 7.0 / seamonkey 2.4) starting with firefox 44, this file is empty as its features were either no longer used or are only available from c++ code; see dom/base/nspidomwindow.h for those.

nsIDOMWindowInternal
66 introduced gecko 1.0 deprecated gecko 8.0 inherits from: nsidomwindow last changed in gecko 7.0 (firefox 7.0 / thunderbird 7.0 / seamonkey 2.4) in gecko 8.0 this interface was merged into the nsidomwindow interface.

getFile
deprecated these locations have been deprecated and should no longer be used.

nsIDownloadManager
this interface is deprecated as of firefox 26.

nsIDragService
inherits from: nsisupports last changed in gecko 43 (firefox 43 / thunderbird 43 / seamonkey 2.40) note: using this interface directly from add-on code is deprecated.

nsIGlobalHistory
66 introduced gecko 1.0 deprecated gecko 2.0 obsolete gecko 15.0 inherits from: nsisupports last changed in gecko 1.7 method overview void addpage(in string aurl); boolean isvisited(in string aurl); methods addpage() add a page to the history.

nsIInputStream
method overview unsigned long available();deprecated since gecko 17.0 unsigned long long available(); void close(); boolean isnonblocking(); unsigned long read(in charptr abuf, in unsigned long acount); native code only!

nsILocalFile
66 introduced gecko 1.0 deprecated gecko 14 inherits from: nsifile last changed in gecko 1.0 implemented by: @mozilla.org/file/local;1.

nsIMessageListener
deprecated.

nsIPasswordManager
netwerk/base/public/nsipasswordmanager.idlscriptable used to interface with the built-in password manager 66 introduced gecko 1.0 deprecated gecko 1.9 inherits from: nsisupports last changed in gecko 1.0 see using nsipasswordmanager for examples.

nsIPrivateBrowsingService
1.0 66 introduced gecko 1.9.1 inherits from: nsisupports last changed in gecko 2.0 (firefox 4 / thunderbird 3.3 / seamonkey 2.1) this interface is deprecated since firefox 20, and will probably be completely removed in firefox 21.

nsIProfile
66 introduced gecko 0.9 deprecated gecko 1.8.1 obsolete gecko 20.0 inherits from: nsisupports last changed in gecko 1.6 implemented by: @mozilla.org/profile/manager;1.

XPIDL
in the future, [array] may be deprecated and removed.

Autoconfiguration in Thunderbird
http is deprecated now, but will need to be supported until at least end of 2023 for both of these reasons.

Plug-in Development Overview - Plugins
note: the resource method described below is deprecated.

Index - Firefox Developer Tools
28 deprecated tools deprecated, tools over the course of devtools development, we have added several experimental panels to try out new ideas.

UI Tour - Firefox Developer Tools
it shows icons for the browsers that do support the properties, and notes properties that are experimental or deprecated.

Console messages - Firefox Developer Tools
the x-content-security-policy and x-content-security-report-only headers will be deprecated in the future.

Web Console Helpers - Firefox Developer Tools
help()deprecated since gecko 62 :help displays help text.

The JavaScript input interpreter - Firefox Developer Tools
help()deprecated since gecko 62 :help displays help text.

AnimationEvent - Web APIs
animationevent.initanimationevent() initializes a animationevent created using the deprecated document.createevent("animationevent") method.

AudioBuffer() - Web APIs
deprecated parameters context a reference to an audiocontext.

AudioListener.dopplerFactor - Web APIs
the deprecated dopplerfactor property of the audiolistener interface is a double value representing the amount of pitch shift to use when rendering a doppler effect.

AudioNode - Web APIs
factory methods continue to be included in the spec and are not deprecated.

AudioProcessingEvent - Web APIs
note: as of the august 29 2014 web audio api spec publication, this feature has been marked as deprecated, and is soon to be replaced by audioworklet.

BaseAudioContext.createScriptProcessor() - Web APIs
note: as of the august 29 2014 web audio api spec publication, this feature has been marked as deprecated, and was replaced by audioworklet (see audioworkletnode).

BlobBuilder - Web APIs
note: the blobbuilder interface has been deprecated in favor of the newly introduced blob constructor.

CSSStyleSheet.rules - Web APIs
rules is a deprecated legacy property of the cssstylesheet interface.

CanvasRenderingContext2D.drawWindow() - Web APIs
the deprecated, non-standard and internal only canvasrenderingcontext2d.drawwindow() method of the canvas 2d api renders a region of a window into the canvas.

Drawing text - Web APIs
these are now deprecated and removed, and are no longer guaranteed to work.

CloseEvent.initCloseEvent() - Web APIs
do not use this method anymore as it is deprecated.

DOMException - Web APIs
(legacy code value: 17 and legacy constant name: type_mismatch_err) this value is deprecated; the javascript typeerror exception is now raised instead of a domexception with this value.

DOMImplementation.hasFeature() - Web APIs
it is deprecated and modern browsers return true in all cases.

Document.createEvent() - Web APIs
many methods used with createevent, such as initcustomevent, are deprecated.

Document.createTouch() - Web APIs
consequently, these parameters should be considered deprecated and not used.

Document.execCommand() - Web APIs
this has been deprecated in favor of stylewithcss.

Document.fullscreen - Web APIs
note: since this property is deprecated, you can determine if full-screen mode is active on the document by checking to see if document.fullscreenelement is not null.

Document: keypress event - Web APIs
since this event has been deprecated, you should look to use beforeinput or keydown instead.

Document.registerElement() - Web APIs
warning: document.registerelement() is deprecated in favor of customelements.define().

Document: wheel event - Web APIs
bubbles yes cancelable yes interface wheelevent event handler property globaleventhandlers.onwheel this event replaces the non-standard deprecated mousewheel event.

Element.createShadowRoot() - Web APIs
this method has been deprecated in favor of attachshadow().

Element: keypress event - Web APIs
since this event has been deprecated, you should look to use beforeinput or keydown instead.

Element: wheel event - Web APIs
this event replaces the non-standard deprecated mousewheel event.

Event.defaultPrevented - Web APIs
note: you should use this instead of the non-standard, deprecated getpreventdefault() method (see bug 691151).

FetchEvent.client - Web APIs
note: this feature has been deprecated, with its functionality replaced by fetchevent.clientid and clients.get().

File.fileName - Web APIs
this property is deprecated.

File.fileSize - Web APIs
this property is deprecated.

FileReaderSync.readAsBinaryString() - Web APIs
note: this method is deprecated in favor of readasarraybuffer().

Introduction to the File and Directory Entries API - Web APIs
the file and directory entries api and other storage apis the file and directory entries api is an alternative to other storage apis like indexeddb, websql (which has been deprecated since november18, 2010), and appcache.

GlobalEventHandlers.onkeypress - Web APIs
the onkeypress event handler has been deprecated.

GlobalEventHandlers.onmousewheel - Web APIs
this interface is non-standard and deprecated.

GlobalEventHandlers - Web APIs
deprecated.

HTMLBaseFontElement - Web APIs
the <basefont> element has been deprecated in html4 and removed in html5.

HTMLFormElement - Web APIs
deprecated methods htmlformelement.requestautocomplete() triggers a native browser interface to assist the user in completing the fields which have an autofill field name value that is not off or on.

HTMLHtmlElement.version - Web APIs
this property has been declared as deprecated by the w3c technical recommendation for html 4.01 in favor of use of the dtd for obtaining version information for a document.

HTMLHtmlElement - Web APIs
obsolete reflecting the element change in html 4.01 specification, the version property is now deprecated.

HTMLImageElement.longDesc - Web APIs
recommendation provides an actual description of this property; the html5 spec only says it's deprecated.

HTMLImageElement - Web APIs
this is deprecated; use the css border property instead.

HTMLIsIndexElement - Web APIs
the <isindex> element has been deprecated in html4 and removed in html5.

HTMLTableCellElement - Web APIs
deprecated properties warning: these properties have been deprecated and should no longer be used.

HTMLTableElement.bgColor - Web APIs
the bgcolor attribute is deprecated in html 4.01.

HTMLTableElement.border - Web APIs
this attribute is deprecated in html 4.0.

IDBFactory.open() - Web APIs
warning: the storage attribute is deprecated and will soon be removed from gecko.

IDBTransaction - Web APIs
transactions in this mode are known as "upgrade transactions." even if these constants are now deprecated, you can still use them to provide backward compatibility if required (in chrome the change was made in version 21).

IDBVersionChangeEvent - Web APIs
deprecated properties idbversionchangeevent.version read only the new version of the database in a versionchange transaction.

Checking when a deadline is due - Web APIs
here we fetch the current minutes (gives an easy numerical value), hours (gives an easy numerical value), day of the month (getdate() is needed for this, as getday() returns the day of the week, 1-7), month (returns a number from 0-11, see below), and year (getfullyear() is needed; getyear() is deprecated, and returns a weird value that is not much use to anyone!) var objectstore = db.transaction(['todolist'], "readwrite").objectstore('todolist'); objectstore.opencursor().onsuccess = function(event) { var cursor = event.target.result; if(cursor) { next we create another indexeddb objectstore, and use the opencursor() method to open a cursor, which is basically a way in indexeddb t...

Using IndexedDB - Web APIs
here's what that looks like: var transaction = db.transaction(["customers"], "readwrite"); // note: older experimental implementations use the deprecated constant idbtransaction.read_write instead of "readwrite".

compareVersion - Web APIs
the majority of this api is now deprecated and as of gecko 1.9 no longer available.

getVersion - Web APIs
the majority of this api is now deprecated and as of gecko 1.9 no longer available.

InterventionReportBody - Web APIs
this can be used to group reports by deprecated feature.

KeyboardEvent.initKeyEvent() - Web APIs
the initkeyevent is the current gecko equivalent of the dom level 3 events (initially drafted and also deprecated in favor of keyboardevent() keyboard.initkeyboardevent() method with the following arguments : typearg of type domstring canbubblearg of type boolean cancelablearg of type boolean viewarg of type views::abstractview keyidentifierarg of type domstring keylocationarg of type unsigned long modifierslist of type domstring); ...

KeyboardEvent.initKeyboardEvent() - Web APIs
this method was introduced in draft of dom level 3 events, but deprecated in newer draft.

KeyboardEvent.which - Web APIs
obsolete initial definition; specified as deprecated ...

MSGestureEvent - Web APIs
this method is deprecated as of microsoft edge.

MSManipulationEvent.initMSManipulationEvent() - Web APIs
beginning with the microsoft edge browser, the initevent() constructor pattern for synthetic events is deprecated.

MSSiteModeEvent - Web APIs
*note that as of microsoft edge, the createevent()/initevent() constructor pattern for synthetic events is deprecated.

Microdata DOM API - Web APIs
nowadays, they have been abandoned and removed from all browsers and are therefore deprecated.

MimeTypeArray - Web APIs
} else { // notify the user that flash is being deprecated and they // should upgrade their browser.

MouseEvent - Web APIs
instead of using this deprecated (and non-standard) property, you should instead use pointerevent and look at its pressure property.

MouseScrollEvent - Web APIs
like mousewheelevent, this interface is non-standard and deprecated.

MouseWheelEvent - Web APIs
like mousescrollevent, this interface is non-standard and deprecated.

OfflineAudioCompletionEvent - Web APIs
note: this interface is marked as deprecated; it is still supported for legacy reasons, but it will soon be superseded when the promise version of offlineaudiocontext.startrendering is supported in browsers, which will no longer need it.

OfflineAudioContext - Web APIs
deprecated methods offlineaudiocontext.resume() resumes the progression of time in an audio context that has previously been suspended.

Performance.navigation - Web APIs
this property is deprecated in the navigation timing level 2 specification.

Performance.timing - Web APIs
this property is deprecated in the navigation timing level 2 specification.

PerformanceNavigation.redirectCount - Web APIs
this interface of this property is deprecated in the navigation timing level 2 specification.

PerformanceNavigation.type - Web APIs
this interface of this property is deprecated in the navigation timing level 2 specification.

PerformanceNavigation - Web APIs
this interface is deprecated in the navigation timing level 2 specification.

PerformanceTiming.connectEnd - Web APIs
this interface of this property is deprecated in the navigation timing level 2 specification.

PerformanceTiming.connectStart - Web APIs
this interface of this property is deprecated in the navigation timing level 2 specification.

PerformanceTiming.domComplete - Web APIs
this interface of this property is deprecated in the navigation timing level 2 specification.

PerformanceTiming.domContentLoadedEventEnd - Web APIs
this interface of this property is deprecated in the navigation timing level 2 specification.

PerformanceTiming.domContentLoadedEventStart - Web APIs
this interface of this property is deprecated in the navigation timing level 2 specification.

PerformanceTiming.domInteractive - Web APIs
this interface of this property is deprecated in the navigation timing level 2 specification.

PerformanceTiming.domLoading - Web APIs
this interface of this property is deprecated in the navigation timing level 2 specification.

PerformanceTiming.domainLookupEnd - Web APIs
this interface of this property is deprecated in the navigation timing level 2 specification.

PerformanceTiming.domainLookupStart - Web APIs
this interface of this property is deprecated in the navigation timing level 2 specification.

PerformanceTiming.fetchStart - Web APIs
this interface of this property is deprecated in the navigation timing level 2 specification.

PerformanceTiming.loadEventEnd - Web APIs
this interface of this property is deprecated in the navigation timing level 2 specification.

PerformanceTiming.loadEventStart - Web APIs
this interface of this property is deprecated in the navigation timing level 2 specification.

PerformanceTiming.navigationStart - Web APIs
this interface of this property is deprecated in the navigation timing level 2 specification.

PerformanceTiming.redirectEnd - Web APIs
this interface of this property is deprecated in the navigation timing level 2 specification.

PerformanceTiming.redirectStart - Web APIs
this interface of this property is deprecated in the navigation timing level 2 specification.

PerformanceTiming.requestStart - Web APIs
this interface of this property is deprecated in the navigation timing level 2 specification.

PerformanceTiming.responseEnd - Web APIs
this interface of this property is deprecated in the navigation timing level 2 specification.

PerformanceTiming.responseStart - Web APIs
this interface of this property is deprecated in the navigation timing level 2 specification.

PerformanceTiming.secureConnectionStart - Web APIs
this interface of this property is deprecated in the navigation timing level 2 specification.

PerformanceTiming.unloadEventEnd - Web APIs
this interface of this property is deprecated in the navigation timing level 2 specification.

PerformanceTiming.unloadEventStart - Web APIs
this interface of this property is deprecated in the navigation timing level 2 specification.

PerformanceTiming - Web APIs
this interface is deprecated in the navigation timing level 2 specification.

ProgressEvent - Web APIs
progressevent.initprogressevent() initializes a progressevent created using the deprecated document.createevent("progressevent") method.

PushManager - Web APIs
deprecated methods pushmanager.haspermission() returns a promise that resolves to the pushpermissionstatus of the requesting webapp, which will be one of granted, denied, or default.

RTCDataChannel.stream - Web APIs
the deprecated (and never part of the official specification) read-only rtcdatachannel property stream returns an id number (between 0 and 65,535) which uniquely identifies the rtcdatachannel.

RTCDataChannel - Web APIs
reated, then this property's value is "" (the empty string).readystate read only the read-only rtcdatachannel property readystate returns an enum of type rtcdatachannelstate which indicates the state of the data channel's underlying data connection.reliable read only the read-only rtcdatachannel property reliable indicates whether or not the data channel is reliable.stream read only the deprecated (and never part of the official specification) read-only rtcdatachannel property stream returns an id number (between 0 and 65,535) which uniquely identifies the rtcdatachannel.event handlersalso inherits event handlers from: eventtargetonbufferedamountlow the rtcdatachannel.onbufferedamountlow property is an eventhandler which specifies a function the browser calls when the bufferedamountlow ev...

RTCPeerConnection: identityresult event - Web APIs
note: while older versions of the webrtc specification used events to report assertions, this has been deprecated and removed from the specification.

RTCPeerConnection.onidpassertionerror - Web APIs
this event handler is deprecated.

RTCPeerConnection.removeStream() - Web APIs
because this method has been deprecated, you should instead use removetrack() if your target browser versions have implemented it.

RTCPeerConnection - Web APIs
because this method has been deprecated, you should instead use removetrack() if your target browser versions have implemented it.removetrack()the rtcpeerconnection.removetrack() method tells the local end of the connection to stop sending media from the specified track, without actually removing the corresponding rtcrtpsender from the list of senders as reported by rtcpeerconnection.getsenders().restartice()the webrtc api's rtcpeercon...

RTCRtpTransceiver.stop() - Web APIs
that property has been deprecated and will be removed at some point.

RTCRtpTransceiver.stopped - Web APIs
usage notes this property is deprecated and will be removed in the future.

RTCSessionDescription() - Web APIs
this constructor has been deprecated because rtcpeerconnection.setlocaldescription() and other methods which take sdp as input now directly accept an object conforming to the rtcsessiondescriptioninit dictionary, so you don't have to instantiate an rtcsessiondescription yourself.

RTCSessionDescriptionCallback - Web APIs
the rtcsessiondescriptioncallback type is used to represent the callback function passed into the deprecated callback-based version of createoffer() or createanswer() when using them to create offers or answers.

Report - Web APIs
examples in our deprecation_report.html example, we create a simple reporting observer to observe usage of deprecated features on our web page: let options = { types: ['deprecation'], buffered: true } let observer = new reportingobserver(function(reports, observer) { reportbtn.onclick = () => displayreports(reports); }, options); we then tell it to start observing reports using reportingobserver.observe(); this tells the observer to start collecting reports in its report queue, and runs the callback fun...

Request.context - Web APIs
the deprecated context read-only property of the request interface contains the context of the request (e.g., audio, image, iframe).

ResizeObserverEntry.contentRect - Web APIs
note that this is better supported than resizeobserverentry.borderboxsize or resizeobserverentry.contentboxsize, but it is left over from an earlier implementation of the resize observer api, is still included in the spec for web compat reasons, and may be deprecated in future versions.

ResizeObserverEntry - Web APIs
note that this is better supported than the above two properties, but it is left over from an earlier implementation of the resize observer api, is still included in the spec for web compat reasons, and may be deprecated in future versions.

SVGElement - Web APIs
this attribute is deprecated and may be removed in a future version of this specification.

Screen.onorientationchange - Web APIs
warning: this is a non-standard deprecated feature which was implemented only in firefox under a different name.

ScriptProcessorNode.bufferSize - Web APIs
note: as of the august 29 2014 web audio api spec publication, this feature has been marked as deprecated, and is soon to be replaced by audio workers.

ScriptProcessorNode.onaudioprocess - Web APIs
note: as of the august 29 2014 web audio api spec publication, this feature has been marked as deprecated, and is soon to be replaced by audio workers.

ScriptProcessorNode - Web APIs
note: as of the august 29 2014 web audio api spec publication, this feature has been marked as deprecated, and was replaced by audioworklet (see audioworkletnode).

ServiceWorkerContainer.onmessage - Web APIs
(they used to be represented by serviceworkermessageevent objects, which have now been deprecated.) syntax serviceworkercontainer.onmessage = function(messageevent) { ...

ServiceWorkerGlobalScope.onmessage - Web APIs
(they used to be represented by serviceworkermessageevent objects, which have now been deprecated.) syntax serviceworkerglobalscope.onmessage = function(extendablemessageevent) { ...

ServiceWorkerMessageEvent.ServiceWorkerMessageEvent() - Web APIs
important: in modern browsers, this property has been deprecated.

ServiceWorkerMessageEvent.data - Web APIs
important: in modern browsers, this property has been deprecated.

ServiceWorkerMessageEvent.lastEventId - Web APIs
important: in modern browsers, this property has been deprecated.

ServiceWorkerMessageEvent.origin - Web APIs
important: in modern browsers, this property has been deprecated.

ServiceWorkerMessageEvent.ports - Web APIs
important: in modern browsers, this property has been deprecated.

ServiceWorkerMessageEvent.source - Web APIs
important: in modern browsers, this property has been deprecated.

ServiceWorkerMessageEvent - Web APIs
important: in modern browsers, this interface has been deprecated.

Service Worker API - Web APIs
note that this interface is deprecated in modern browsers.

SharedWorkerGlobalScope.applicationCache - Web APIs
important: application cache is deprecated as of firefox 44, and is no longer available in insecure contexts from firefox 60 onwards (bug 1354175, currently nightly/beta only).

TransformStream - Web APIs
cannot send undefined as a chunk part") default: controller.enqueue(this.textencoder.encode(string(chunk))) break }, flush() { /* do any destructor work here */ } } class anytou8stream extends transformstream { constructor() { super({...transformcontent, textencoder: new textencoder()}) } } polyfilling textencoderstream and textdecoderstream note that this is deprecated by the native constructors.

TransitionEvent - Web APIs
transitionevent.inittransitionevent() initializes a transitionevent created using the deprecated document.createevent("transitionevent") method.

UIEvent - Web APIs
obsolete added the uievent() constructor, deprecated the inituievent() method and changed the type of view from abstractview to windowproxy.

Signaling and video calling - Web APIs
function handlesignalingstatechangeevent(event) { switch(mypeerconnection.signalingstate) { case "closed": closevideocall(); break; } }; note: the closed signaling state has been deprecated in favor of the closed iceconnectionstate.

Using DTMF with WebRTC - Web APIs
falling " + "back to the <strong>deprecated</strong> addstream() method..."); callerpc.addstream(stream); } if (callerpc.getsenders) { dtmfsender = callerpc.getsenders()[0].dtmf; } else { log("your browser doesn't support rtcpeerconnection.getsenders(), so " + "falling back to use <strong>deprecated</strong> createdtmfsender() " + "instead."); dtmfsender = callerpc.createdtmfsender(audiotracks[0]); ...

Using WebRTC data channels - Web APIs
when two users running firefox are communicating on a data channel, the message size limit is much larger than when firefox and chrome are communicating because firefox implements a now deprecated technique for sending large messages in multiple sctp messages, which chrome does not.

Web Audio API - Web APIs
the scriptprocessornode is kept for historic reasons but is marked as deprecated and will be removed in a future version of the specification.

Window.applicationCache - Web APIs
important: application cache is deprecated as of firefox 44, and is no longer available in insecure contexts from firefox 60 onwards (bug 1354175, currently nightly/beta only).

Window: beforeunload event - Web APIs
however, this is deprecated and no longer supported in most browsers.

Window.content - Web APIs
the former has been deprecated for a long time, and you should use content in any new code.

Window.external - Web APIs
however, this is now deprecated, and the contained methods are now dummy functions that do nothing as per spec.

WorkerGlobalScope - Web APIs
deprecated methods workerglobalscope.close() discards any tasks queued in the workerglobalscope's event loop, effectively closing this particular scope.

Sending and Receiving Binary Data - Web APIs
note: this non-standard sendasbinary method is considered deprecated as of gecko 31 (firefox 31 / thunderbird 31 / seamonkey 2.28) and will be removed soon.

Synchronous and asynchronous requests - Web APIs
synchronous request note: starting with gecko 30.0 (firefox 30.0 / thunderbird 30.0 / seamonkey 2.27), blink 39.0, and edge 13, synchronous requests on the main thread have been deprecated due to their negative impact on the user experience.

XMLHttpRequest.open() - Web APIs
note: synchronous requests on the main thread can be easily disruptive to the user experience and should be avoided; in fact, many browsers have deprecated synchronous xhr support on the main thread entirely.

XMLHttpRequest.sendAsBinary() - Web APIs
however, on google chrome, when you try to send an arraybuffer, the following warning message will appear: arraybuffer is deprecated in xmlhttprequest.send().

XMLHttpRequestResponseType - Web APIs
deprecated values moz-chunked-arraybuffer a firefox-only value which instructs xmlhttprequest to deliver arraybuffer objects containing chunks of the incoming data.

XSL Transformations in Mozilla FAQ - Web APIs
ie up to version 6 required a deprecated namespace of a xslt working draft, please update to mozilla ;-), ie6+ or msxml3+, as it is fixed there.

ARIA: button role - Accessibility
(note not the deprecated onkeypress) changing attribute values aria-pressed the value of aria-pressed defines the state of a toggle button.

-webkit-border-before - CSS: Cascading Style Sheets
the transparent keyword maps to rgba(0,0,0,0).animation typediscrete formal syntax <'border-width'> | <'border-style'> | <'color'>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?

-webkit-box-reflect - CSS: Cascading Style Sheets
)<gradient> = <linear-gradient()> | <repeating-linear-gradient()> | <radial-gradient()> | <repeating-radial-gradient()> | <conic-gradient()>where <image-tags> = ltr | rtl<image-src> = <url> | <string><color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color><image-set-option> = [ <image> | <string> ] <resolution><id-selector> = <hash-token><cf-mixing-image> = <percentage>?

-webkit-tap-highlight-color - CSS: Cascading Style Sheets
formal definition initial valueblackapplies toall elementsinheritednocomputed valueas specifiedanimation typediscrete formal syntax <color>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?

-webkit-text-fill-color - CSS: Cascading Style Sheets
formal definition initial valuecurrentcolorapplies toall elementsinheritedyescomputed valuecomputed coloranimation typea color formal syntax <color>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?

-webkit-text-stroke-color - CSS: Cascading Style Sheets
formal definition initial valuecurrentcolorapplies toall elementsinheritedyescomputed valuecomputed coloranimation typea color formal syntax <color>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?

-webkit-text-stroke - CSS: Cascading Style Sheets
d valueas each of the properties of the shorthand:-webkit-text-stroke-width: absolute <length>-webkit-text-stroke-color: computed coloranimation typeas each of the properties of the shorthand:-webkit-text-stroke-width: discrete-webkit-text-stroke-color: a color formal syntax <length> | <color>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?

additive-symbols - CSS: Cascading Style Sheets
)<gradient> = <linear-gradient()> | <repeating-linear-gradient()> | <radial-gradient()> | <repeating-radial-gradient()> | <conic-gradient()>where <image-tags> = ltr | rtl<image-src> = <url> | <string><color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color><image-set-option> = [ <image> | <string> ] <resolution><id-selector> = <hash-token><cf-mixing-image> = <percentage>?

negative - CSS: Cascading Style Sheets
)<gradient> = <linear-gradient()> | <repeating-linear-gradient()> | <radial-gradient()> | <repeating-radial-gradient()> | <conic-gradient()>where <image-tags> = ltr | rtl<image-src> = <url> | <string><color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color><image-set-option> = [ <image> | <string> ] <resolution><id-selector> = <hash-token><cf-mixing-image> = <percentage>?

pad - CSS: Cascading Style Sheets
)<gradient> = <linear-gradient()> | <repeating-linear-gradient()> | <radial-gradient()> | <repeating-radial-gradient()> | <conic-gradient()>where <image-tags> = ltr | rtl<image-src> = <url> | <string><color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color><image-set-option> = [ <image> | <string> ] <resolution><id-selector> = <hash-token><cf-mixing-image> = <percentage>?

prefix - CSS: Cascading Style Sheets
)<gradient> = <linear-gradient()> | <repeating-linear-gradient()> | <radial-gradient()> | <repeating-radial-gradient()> | <conic-gradient()>where <image-tags> = ltr | rtl<image-src> = <url> | <string><color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color><image-set-option> = [ <image> | <string> ] <resolution><id-selector> = <hash-token><cf-mixing-image> = <percentage>?

suffix - CSS: Cascading Style Sheets
)<gradient> = <linear-gradient()> | <repeating-linear-gradient()> | <radial-gradient()> | <repeating-radial-gradient()> | <conic-gradient()>where <image-tags> = ltr | rtl<image-src> = <url> | <string><color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color><image-set-option> = [ <image> | <string> ] <resolution><id-selector> = <hash-token><cf-mixing-image> = <percentage>?

symbols - CSS: Cascading Style Sheets
)<gradient> = <linear-gradient()> | <repeating-linear-gradient()> | <radial-gradient()> | <repeating-radial-gradient()> | <conic-gradient()>where <image-tags> = ltr | rtl<image-src> = <url> | <string><color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color><image-set-option> = [ <image> | <string> ] <resolution><id-selector> = <hash-token><cf-mixing-image> = <percentage>?

-ms-high-contrast - CSS: Cascading Style Sheets
edia screen and (-ms-high-contrast: active) { /* all high contrast styling rules */ } @media screen and (-ms-high-contrast: black-on-white) { div { background-image: url('image-bw.png'); } } @media screen and (-ms-high-contrast: white-on-black) { div { background-image: url('image-wb.png'); } } accessibility concerns theming high contrast mode's theme colors come from a limited subset of deprecated css2 system colors.

device-aspect-ratio - CSS: Cascading Style Sheets
candidate recommendation deprecated in media queries level 4.

device-height - CSS: Cascading Style Sheets
candidate recommendation deprecated in media queries level 4.

device-width - CSS: Cascading Style Sheets
candidate recommendation deprecated in media queries level 4.

CSS Logical Properties and Values - CSS: Cascading Style Sheets
ords) float (inline-end and inline-start keywords) inset inset-block inset-block-end inset-block-start inset-inline inset-inline-end inset-inline-start other properties caption-side (inline-end and inline-start keywords) overflow-block overflow-inline overscroll-behavior-block overscroll-behavior-inline resize (block and inline keywords) text-align (end and start keywords) deprecated properties offset-block-end (now inset-block-end ) offset-block-start (now inset-block-start ) offset-inline-end (now inset-inline-end ) offset-inline-start (now inset-inline-start ) guides basic concepts of logical properties and values logical properties for sizing logical properties for margins, borders and padding logical properties for floating and positio...

Browser compatibility and Scroll Snap - CSS: Cascading Style Sheets
the example adds the scroll-snap-points-y and scroll-snap-destination properties, which are deprecated, to make scroll snapping work in firefox.

CSS Scroll Snap - CSS: Cascading Style Sheets
note: the previous version of this module was called scroll snap points and has been deprecated.

CSS values and units - CSS: Cascading Style Sheets
allows alpha values in rgb() and hsl(), turning rgba() and hsla() into (deprecated) aliases for them.

Mozilla CSS extensions - CSS: Cascading Style Sheets
oz-inline-table l :-moz-last-node :-moz-list-bullet :-moz-list-number :-moz-loading :-moz-locale-dir(ltr) :-moz-locale-dir(rtl) :-moz-lwtheme :-moz-lwtheme-brighttext :-moz-lwtheme-darktext n – r :-moz-native-anonymous :-moz-only-whitespace ::-moz-page ::-moz-page-sequence ::-moz-pagebreak ::-moz-pagecontent :-moz-placeholderobsolete since gecko 51 ::-moz-placeholderdeprecated since gecko 51 ::-moz-progress-bar ::-moz-range-progress ::-moz-range-thumb ::-moz-range-track :-moz-read-only :-moz-read-write s ::-moz-scrolled-canvas ::-moz-scrolled-content ::-moz-scrolled-page-sequence ::-moz-selectiondeprecated since gecko 62 :-moz-submit-invalid :-moz-suppressed ::-moz-svg-foreign-content t ::-moz-table ::-moz-table-cell ::-moz-table-column ::-...

WebKit CSS extensions - CSS: Cascading Style Sheets
deprecated -webkit- properties the following properties were once supported with the -webkit- prefix but are no longer supported in evergreen browsers, with or without the -webkit- prefix.

backdrop-filter - CSS: Cascading Style Sheets
)> = grayscale( <number-percentage> )<hue-rotate()> = hue-rotate( <angle> )<invert()> = invert( <number-percentage> )<opacity()> = opacity( [ <number-percentage> ] )<saturate()> = saturate( <number-percentage> )<sepia()> = sepia( <number-percentage> )where <number-percentage> = <number> | <percentage><color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?

background-color - CSS: Cascading Style Sheets
it also applies to ::first-letter and ::first-line.inheritednocomputed valuecomputed coloranimation typea color formal syntax <color>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?

background-image - CSS: Cascading Style Sheets
)<gradient> = <linear-gradient()> | <repeating-linear-gradient()> | <radial-gradient()> | <repeating-radial-gradient()> | <conic-gradient()>where <image-tags> = ltr | rtl<image-src> = <url> | <string><color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color><image-set-option> = [ <image> | <string> ] <resolution><id-selector> = <hash-token><cf-mixing-image> = <percentage>?

background - CSS: Cascading Style Sheets
)<gradient> = <linear-gradient()> | <repeating-linear-gradient()> | <radial-gradient()> | <repeating-radial-gradient()> | <conic-gradient()>where <image-tags> = ltr | rtl<image-src> = <url> | <string><color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color><image-set-option> = [ <image> | <string> ] <resolution><id-selector> = <hash-token><cf-mixing-image> = <percentage>?

border-block-end - CSS: Cascading Style Sheets
or hiddenborder-top-style: as specifiedborder-top-color: computed coloranimation typeas each of the properties of the shorthand:border-block-end-color: a colorborder-block-end-style: discreteborder-block-end-width: a length formal syntax <'border-top-width'> | <'border-top-style'> | <'color'>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?

border-block-start - CSS: Cascading Style Sheets
er-top-style: as specifiedborder-block-start-color: computed coloranimation typeas each of the properties of the shorthand:border-block-start-color: a colorborder-block-start-style: discreteborder-block-start-width: a length formal syntax <'border-top-width'> | <'border-top-style'> | <'color'>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?

border-block - CSS: Cascading Style Sheets
dnocomputed valueas each of the properties of the shorthand:border-top-width: the absolute length or 0 if border-top-style is none or hiddenborder-top-style: as specifiedborder-top-color: computed coloranimation typediscrete formal syntax <'border-top-width'> | <'border-top-style'> | <'color'>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?

border-bottom - CSS: Cascading Style Sheets
e shorthand:border-bottom-color: a colorborder-bottom-style: discreteborder-bottom-width: a length formal syntax <line-width> | <line-style> | <color>where <line-width> = <length> | thin | medium | thick<line-style> = none | hidden | dotted | dashed | solid | double | groove | ridge | inset | outset<color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?

border-color - CSS: Cascading Style Sheets
colorborder-left-color: computed colorborder-right-color: computed colorborder-top-color: computed coloranimation typeas each of the properties of the shorthand:border-bottom-color: a colorborder-left-color: a colorborder-right-color: a colorborder-top-color: a color formal syntax <color>{1,4}where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?

border-image-source - CSS: Cascading Style Sheets
)<gradient> = <linear-gradient()> | <repeating-linear-gradient()> | <radial-gradient()> | <repeating-radial-gradient()> | <conic-gradient()>where <image-tags> = ltr | rtl<image-src> = <url> | <string><color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color><image-set-option> = [ <image> | <string> ] <resolution><id-selector> = <hash-token><cf-mixing-image> = <percentage>?

border-inline-end - CSS: Cascading Style Sheets
border-top-style: as specifiedborder-inline-end-color: computed coloranimation typeas each of the properties of the shorthand:border-inline-end-color: a colorborder-inline-end-style: discreteborder-inline-end-width: a length formal syntax <'border-top-width'> | <'border-top-style'> | <'color'>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?

border-inline-start - CSS: Cascading Style Sheets
op-style: as specifiedborder-inline-start-color: computed coloranimation typeas each of the properties of the shorthand:border-inline-start-color: a colorborder-inline-start-style: discreteborder-inline-start-width: a length formal syntax <'border-top-width'> | <'border-top-style'> | <'color'>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?

border-inline - CSS: Cascading Style Sheets
dnocomputed valueas each of the properties of the shorthand:border-top-width: the absolute length or 0 if border-top-style is none or hiddenborder-top-style: as specifiedborder-top-color: computed coloranimation typediscrete formal syntax <'border-top-width'> | <'border-top-style'> | <'color'>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?

border-left-color - CSS: Cascading Style Sheets
it also applies to ::first-letter.inheritednocomputed valuecomputed coloranimation typea color formal syntax <color>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?

border-left - CSS: Cascading Style Sheets
of the shorthand:border-left-color: a colorborder-left-style: discreteborder-left-width: a length formal syntax <line-width> | <line-style> | <color>where <line-width> = <length> | thin | medium | thick<line-style> = none | hidden | dotted | dashed | solid | double | groove | ridge | inset | outset<color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?

border-right-color - CSS: Cascading Style Sheets
it also applies to ::first-letter.inheritednocomputed valuecomputed coloranimation typea color formal syntax <color>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?

border-right - CSS: Cascading Style Sheets
the shorthand:border-right-color: a colorborder-right-style: discreteborder-right-width: a length formal syntax <line-width> | <line-style> | <color>where <line-width> = <length> | thin | medium | thick<line-style> = none | hidden | dotted | dashed | solid | double | groove | ridge | inset | outset<color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?

border-spacing - CSS: Cascading Style Sheets
note: the border-spacing property is equivalent to the deprecated cellspacing <table> attribute, except that it has an optional second value that can be used to set different horizontal and vertical spacing.

border-top-color - CSS: Cascading Style Sheets
it also applies to ::first-letter.inheritednocomputed valuecomputed coloranimation typea color formal syntax <color>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?

border-top - CSS: Cascading Style Sheets
ies of the shorthand:border-top-color: a colorborder-top-style: discreteborder-top-width: a length formal syntax <line-width> | <line-style> | <color>where <line-width> = <length> | thin | medium | thick<line-style> = none | hidden | dotted | dashed | solid | double | groove | ridge | inset | outset<color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?

border - CSS: Cascading Style Sheets
m-width: a lengthborder-left-width: a lengthborder-right-width: a lengthborder-top-width: a length formal syntax <line-width> | <line-style> | <color>where <line-width> = <length> | thin | medium | thick<line-style> = none | hidden | dotted | dashed | solid | double | groove | ridge | inset | outset<color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?

box-shadow - CSS: Cascading Style Sheets
&& <length>{2,4} && <color>?where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?

caret-color - CSS: Cascading Style Sheets
formal definition initial valueautoapplies toall elementsinheritedyescomputed valueauto is computed as specified and <color> values are computed as defined for the color property.animation typea color formal syntax auto | <color>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?

clip-path - CSS: Cascading Style Sheets
the clip-path property replaces the deprecated clip property.

column-rule-color - CSS: Cascading Style Sheets
formal definition initial valuecurrentcolorapplies tomulticol elementsinheritednocomputed valuecomputed coloranimation typea color formal syntax <color>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?

content - CSS: Cascading Style Sheets
)<leader-type> = dotted | solid | space | <string>where <image-tags> = ltr | rtl<image-src> = <url> | <string><color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color><image-set-option> = [ <image> | <string> ] <resolution><id-selector> = <hash-token><cf-mixing-image> = <percentage>?

cross-fade() - CSS: Cascading Style Sheets
&& <image><cf-final-image> = <image> | <color>where <image> = <url> | <image()> | <image-set()> | <element()> | <paint()> | <cross-fade()> | <gradient><color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <image()> = image( <image-tags>?

filter - CSS: Cascading Style Sheets
)> = grayscale( <number-percentage> )<hue-rotate()> = hue-rotate( <angle> )<invert()> = invert( <number-percentage> )<opacity()> = opacity( [ <number-percentage> ] )<saturate()> = saturate( <number-percentage> )<sepia()> = sepia( <number-percentage> )where <number-percentage> = <number> | <percentage><color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?

image-orientation - CSS: Cascading Style Sheets
warning: this property is deprecated in the specification.

image() - CSS: Cascading Style Sheets
)where <image-tags> = ltr | rtl<image-src> = <url> | <string><color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?

mask-border-source - CSS: Cascading Style Sheets
)<gradient> = <linear-gradient()> | <repeating-linear-gradient()> | <radial-gradient()> | <repeating-radial-gradient()> | <conic-gradient()>where <image-tags> = ltr | rtl<image-src> = <url> | <string><color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color><image-set-option> = [ <image> | <string> ] <resolution><id-selector> = <hash-token><cf-mixing-image> = <percentage>?

mask-image - CSS: Cascading Style Sheets
)<gradient> = <linear-gradient()> | <repeating-linear-gradient()> | <radial-gradient()> | <repeating-radial-gradient()> | <conic-gradient()>where <image-tags> = ltr | rtl<image-src> = <url> | <string><color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color><image-set-option> = [ <image> | <string> ] <resolution><id-selector> = <hash-token><cf-mixing-image> = <percentage>?

mask - CSS: Cascading Style Sheets
)<gradient> = <linear-gradient()> | <repeating-linear-gradient()> | <radial-gradient()> | <repeating-radial-gradient()> | <conic-gradient()><box> = border-box | padding-box | content-boxwhere <image-tags> = ltr | rtl<image-src> = <url> | <string><color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color><image-set-option> = [ <image> | <string> ] <resolution><id-selector> = <hash-token><cf-mixing-image> = <percentage>?

outline-color - CSS: Cascading Style Sheets
the transparent keyword maps to rgba(0,0,0,0).animation typea color formal syntax <color> | invertwhere <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?

scrollbar-color - CSS: Cascading Style Sheets
formal definition initial valueautoapplies toscrolling boxesinheritedyescomputed valueas specifiedanimation typea color formal syntax auto | dark | light | <color>{2}where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?

shape-outside - CSS: Cascading Style Sheets
| [ [ left | right ] <length-percentage> ] && [ [ top | bottom ] <length-percentage> ] ]<fill-rule> = nonzero | evenodd<image-tags> = ltr | rtl<image-src> = <url> | <string><color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color><image-set-option> = [ <image> | <string> ] <resolution><id-selector> = <hash-token><cf-mixing-image> = <percentage>?

text-decoration-color - CSS: Cascading Style Sheets
it also applies to ::first-letter and ::first-line.inheritednocomputed valuecomputed coloranimation typea color formal syntax <color>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?

text-decoration-line - CSS: Cascading Style Sheets
this value is deprecated in favor of css animations.

text-emphasis-color - CSS: Cascading Style Sheets
formal definition initial valuecurrentcolorapplies toall elementsinheritednocomputed valuecomputed coloranimation typea color formal syntax <color>where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?

text-justify - CSS: Cascading Style Sheets
text-justify: none; text-justify: auto; text-justify: inter-word; text-justify: inter-character; text-justify: distribute; /* deprecated value */ syntax the text-justify property is specified as a single keyword chosen from the list of values below.

text-orientation - CSS: Cascading Style Sheets
use-glyph-orientation on svg elements, this keyword leads to use the value of the deprecated svg properties glyph-orientation-vertical and glyph-orientation-horizontal.

text-shadow - CSS: Cascading Style Sheets
]where <color> = <rgb()> | <rgba()> | <hsl()> | <hsla()> | <hex-color> | <named-color> | currentcolor | <deprecated-system-color>where <rgb()> = rgb( <percentage>{3} [ / <alpha-value> ]?

user-select - CSS: Cascading Style Sheets
also defines -webkit-user-select as a deprecated alias of user-select.

word-break - CSS: Cascading Style Sheets
syntax /* keyword values */ word-break: normal; word-break: break-all; word-break: keep-all; word-break: break-word; /* deprecated */ /* global values */ word-break: inherit; word-break: initial; word-break: unset; the word-break property is specified as a single keyword chosen from the list of values below.

Event reference
note that this is deprecated, and newer implementations use mozbrowsercaretstatechanged instead.

Cross-browser audio basics - Developer guides
these are also deprecated, and soon won't work in any modern browsers.

Writing Web Audio API code that works in every browser - Developer guides
furthermore, as a result of the spec being still in flux, some browsers use deprecated properties and method names that are not present in standards-compliant browsers: safari uses the old method names, firefox uses the new ones, and chrome and opera use both.

Mutation events - Developer guides
preface the mutation events have been marked as deprecated in the dom events specification, as the api's design is flawed (see details in the "dom mutation events replacement: the story so far / existing points of consensus" post to public-webapps).

Making content editable - Developer guides
see bug 1449564 and firefox-specific html editing ui has been deprecated for additional details.

<h1>–<h6>: The HTML Section Heading elements - HTML: Hypertext Markup Language
permitted parents any element that accepts flow content; don't use a heading element as a child of the <hgroup> element — it is now deprecated.

<a>: The Anchor element - HTML: Hypertext Markup Language
deprecated for being very confusing.

<area> - HTML: Hypertext Markup Language
deprecated attributes name define a names for the clickable area so that it can be scripted by older browsers.

<b>: The Bring Attention To element - HTML: Hypertext Markup Language
styling information has been deprecated since html4, so the meaning of the <b> element has been changed.

<basefont> - HTML: Hypertext Markup Language
the <basefont> element was deprecated in the standard at the same time as all elements related to styling only.

<br>: The Line Break element - HTML: Hypertext Markup Language
deprecated attributes clear indicates where to begin the next line after the break.

<center>: The Centered Text element (obsolete) - HTML: Hypertext Markup Language
this tag has been deprecated in html 4 (and xhtml 1) in favor of the css text-align property, which can be applied to the <div> element or to an individual <p>.

<col> - HTML: Hypertext Markup Language
deprecated attributes the following attributes are deprecated and should not be used.

<colgroup> - HTML: Hypertext Markup Language
deprecated attributes the following attributes are deprecated and should not be used.

<embed>: The Embed External Content element - HTML: Hypertext Markup Language
keep in mind that most modern browsers have deprecated and removed support for browser plug-ins, so relying upon <embed> is generally not wise if you want your site to be operable on the average user's browser.

<font> - HTML: Hypertext Markup Language
though once normalized in html 3.2, it was deprecated in html 4.01, at the same time as all elements related to styling only, then made obsolete in html5.

<form> - HTML: Hypertext Markup Language
deprecated as of html 4 (use id instead).

<hr>: The Thematic Break (Horizontal Rule) element - HTML: Hypertext Markup Language
recommendation the align, noshade, size, and width attributes are deprecated ...

<iframe>: The Inline Frame element - HTML: Hypertext Markup Language
deprecated attributes these attributes are deprecated and may no longer be supported by all user agents.

<img>: The Image Embed element - HTML: Hypertext Markup Language
deprecated attributes align aligns the image with its surrounding context.

<input type="file"> - HTML: Hypertext Markup Language
this is deprecated and should not be used.

<input type="image"> - HTML: Hypertext Markup Language
obsolete attributes the following attribute was defined by html 4 for image inputs, but was not implemented by all browsers and has since been deprecated: attribute description usemap the name of an image map (<map>) element to use with the image; this is obsolete.

<menu> - HTML: Hypertext Markup Language
this element was deprecated in html4, but reintroduced in html5.1 and the html living standard.

<noembed>: The Embed Fallback element (Obsolete) - HTML: Hypertext Markup Language
this element was deprecated in html 4.01 and above in favor of placing fallback content between the opening and closing tags of an <object> element.

<object> - HTML: Hypertext Markup Language
borderdeprecated since html4.01obsolete since html5 the width of a border around the control, in pixels.

<param>: The Object Parameter element - HTML: Hypertext Markup Language
deprecated attributes type only used if the valuetype is set to ref.

<pre>: The Preformatted Text element - HTML: Hypertext Markup Language
recommendation deprecated the cols attribute ...

<script>: The Script element - HTML: Hypertext Markup Language
deprecated attributes charset if present, its value must be an ascii case-insensitive match for "utf-8".

<style>: The Style Information element - HTML: Hypertext Markup Language
deprecated attributes scoped this attribute specifies that the styles only apply to the elements of its parent(s) and children.

<table>: The Table element - HTML: Hypertext Markup Language
deprecated attributes align this enumerated attribute indicates how the table must be aligned inside the containing document.

<td>: The Table Data Cell element - HTML: Hypertext Markup Language
deprecated attributes abbr this attribute contains a short abbreviated description of the cell's content.

<thead>: The Table Head element - HTML: Hypertext Markup Language
deprecated attributes align in html 4, in html5 this enumerated attribute specifies how horizontal alignment of each cell content will be handled.

<tt>: The Teletype Text element (obsolete) - HTML: Hypertext Markup Language
although this element wasn't officially deprecated in html 4.01, its use was discouraged in favor of the semantic elements and/or css.

<u>: The Unarticulated Annotation (Underline) element - HTML: Hypertext Markup Language
usage notes along with other pure styling elements, the original html underline (<u>) element was deprecated in html 4; however, <u> was restored in html 5 with a new, semantic, meaning: to mark text as having some form of non-textual annotation applied.

<xmp> - HTML: Hypertext Markup Language
it has been deprecated since html3.2 and was not implemented in a consistent way.

Global attributes - HTML: Hypertext Markup Language
in addition to the basic html global attributes, the following global attributes also exist: xml:lang and xml:base — these are inherited from the xhtml specifications and deprecated, but kept for compatibility purposes.

HTTP authentication - HTTP
location /status { auth_basic "access to the staging site"; auth_basic_user_file /etc/apache2/.htpasswd; } access using credentials in the url many clients also let you avoid the login prompt by using an encoded url containing the username and the password like this: https://username:password@www.example.com/ the use of these urls is deprecated.

Browser detection using the user agent - HTTP
vigator) { hastouchscreen = navigator.maxtouchpoints > 0; } else if ("msmaxtouchpoints" in navigator) { hastouchscreen = navigator.msmaxtouchpoints > 0; } else { var mq = window.matchmedia && matchmedia("(pointer:coarse)"); if (mq && mq.media === "(pointer:coarse)") { hastouchscreen = !!mq.matches; } else if ('orientation' in window) { hastouchscreen = true; // deprecated, but good fallback } else { // only as a last resort, fall back to user agent sniffing var ua = navigator.useragent; hastouchscreen = ( /\b(blackberry|webos|iphone|iemobile)\b/i.test(ua) || /\b(android|windows phone|ipad|ipod)\b/i.test(ua) ); } } if (hastouchscreen) document.getelementbyid("examplebutton").style.padding="1em"; ...

Connection management in HTTP/1.x - HTTP
domain sharding unless you have a very specific immediate need, don't use this deprecated technique; switch to http/2 instead.

CSP: referrer - HTTP
this api is deprecated and removed from browsers.

Content-Security-Policy - HTTP
though the report-to directive is intended to replace the deprecated report-uri directive, report-to is not supported in most browsers yet.

Public-Key-Pins-Report-Only - HTTP
note: public key pinning mechanism was deprecated in favor of certificate transparency and expect-ct header.

Public-Key-Pins - HTTP
note: public key pinning mechanism was deprecated in favor of certificate transparency and expect-ct header.

Set-Cookie2 - HTTP
the obsolete set-cookie2 http response header used to send cookies from the server to the user agent, but has been deprecated by the specification.

SourceMap - HTTP
header type response header forbidden header name no syntax sourcemap: <url> x-sourcemap: <url> (deprecated) directives <url> a relative (to the request url) or absolute url pointing to a source map file.