ECMAScript for XML - Revision history

imported>Jerryobject: MOS:FIRSTABBReviations define-clarify before parenthetic WP:ABBRs. WP:LINKs: needless-WP:PIPEs > WP:NOPIPEs, update-standardizes. Template:Clarification needed update > Template:Clarify. Adds: MOS:COMMENT, WP:CATEGORY.

2025-06-21T19:09:24Z

MOS:FIRSTABBReviations define-clarify before parenthetic WP:ABBRs. WP:LINKs: needless-WP:PIPEs > WP:NOPIPEs, update-standardizes. Template:Clarification needed update > Template:Clarify. Adds: MOS:COMMENT, WP:CATEGORY.

← Previous revision		Revision as of 19:09, 21 June 2025
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	'''ECMAScript for XML''' ('''E4X''') was an extension to [[ECMAScript]] (which includes [[ActionScript]], [[JavaScript]], and [[JScript]]) to add native support for [[XML]].<ref name="ISO 22537:2006">{{Cite web \|title=ISO/IEC 22537:2006 Information technology – ECMAscript for XML: E4X specification \|url=https://www.iso.org/standard/41002.html \|access-date=2024-08-17 \|website=International Organization for Standardization \|language=en}}</ref> The goal was to provide a simpler alternative to the [[Document Object Model~~\|DOM~~]] interface for accessing XML documents. E4X added XML as a [[primitive (computer science)\|primitive]] data structure to allow ~~for~~ faster access{{~~Clarification needed~~\|date=August 2024}} and better support within the language.		'''ECMAScript for XML''' ('''E4X''') was an extension to [[ECMAScript]] (which includes [[ActionScript]], [[JavaScript]], and [[JScript]]) to add native support for Extensible Markup Language ([[XML]]).<ref name="ISO 22537:2006">{{Cite web \|title=ISO/IEC 22537:2006 Information technology – ECMAscript for XML: E4X specification \|url=https://www.iso.org/standard/41002.html \|access-date=2024-08-17 \|website=International Organization for Standardization \|language=en}}</ref> The goal was to provide a simpler alternative to the [[Document Object Model]] (DOM) interface for accessing XML documents. E4X added XML as a [[primitive (computer science)\|primitive]] data structure to allow faster access{{Clarify\|date=August 2024\|reason="access" to what?}} and better support within the language.

	E4X was standardized by [[Ecma International]] in the [https://web.archive.org/web/20131104082608/http://www.ecma-international.org/publications/standards/Ecma-357.htm ECMA-357 standard]. The first edition was published in June 2004 and the second edition in December 2005. However, the E4X standard was deprecated by the Mozilla Foundation in 2014,<ref>{{cite web\|title=E4X – Archive of obsolete content – MDN\|url=https://developer.mozilla.org/en-US/docs/Archive/Web/E4X\|publisher=Mozilla\|access-date=10 September 2014\|archive-date=24 July 2014\|archive-url=https://web.archive.org/web/20140724100129/https://developer.mozilla.org/en-US/docs/Archive/Web/E4X\|url-status=dead}}</ref> and it was withdrawn by ISO/IEC in 2021.<ref name="ISO 22537:2006" />		E4X was standardized by [[Ecma International]] in the [https://web.archive.org/web/20131104082608/http://www.ecma-international.org/publications/standards/Ecma-357.htm ECMA-357 standard]. The first edition was published in June 2004 and the second edition in December 2005. However, the E4X standard was deprecated by the Mozilla Foundation in 2014,<ref>{{cite web\|title=E4X – Archive of obsolete content – MDN\|url=https://developer.mozilla.org/en-US/docs/Archive/Web/E4X\|publisher=Mozilla\|access-date=10 September 2014\|archive-date=24 July 2014\|archive-url=https://web.archive.org/web/20140724100129/https://developer.mozilla.org/en-US/docs/Archive/Web/E4X\|url-status=dead}}</ref> and it was withdrawn by ISO/IEC in 2021.<ref name="ISO 22537:2006" />
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	==Browser support==		==Browser support==
	E4X is supported by Mozilla's [[Rhino (JavaScript engine)\|Rhino]], as well as by [[Tamarin (~~JavaScript engine~~)\|Tamarin]], the JavaScript engine used in the [[Adobe Flash\|Flash]] virtual machine.{{Citation needed\|date=August 2024}} However, it is ~~not supported~~ by other common engines like [[~~SquirrelFish~~\|Nitro]] ([[Safari (web browser)\|Safari]]), [[V8 (JavaScript engine)\|V8]] ([[Google Chrome]]), [[~~Carakan~~ (~~script~~ engine)\|Carakan]] ([[Opera (web browser)\|Opera]]), and [[Chakra (JScript engine)\|Chakra]] ([[Internet Explorer]]).<ref>{{cite web\|title=Issue 30975: Implement E4X Support for scripts and extensions\|url=http://code.google.com/p/chromium/issues/detail?id=30975\|access-date=21 May 2012}}</ref>		E4X is supported by Mozilla's [[Rhino (JavaScript engine)\|Rhino]], as well as by [[Tamarin (software)\|Tamarin]], the JavaScript engine used in the [[Adobe Flash\|Flash]] virtual machine.{{Citation needed\|date=August 2024}} However, it is unsupported by other common engines like [[WebKit#JavaScriptCore\|Nitro]] ([[Safari (web browser)\|Safari]]), [[V8 (JavaScript engine)\|V8]] ([[Google Chrome]]), [[Presto (browser engine)#ECMAScript engines\|Carakan]] ([[Opera (web browser)\|Opera]]), and [[Chakra (JScript engine)\|Chakra]] ([[Internet Explorer]]).<ref>{{cite web\|title=Issue 30975: Implement E4X Support for scripts and extensions\|url=http://code.google.com/p/chromium/issues/detail?id=30975\|access-date=21 May 2012}}</ref>

	E4X was supported by [[~~SpiderMonkey (JavaScript engine)\|~~SpiderMonkey]] (used in [[Firefox]] and [[Mozilla Thunderbird\|Thunderbird]]). However, E4X was deprecated in Firefox 10<ref>{{cite web \|title=Firefox 10 for developers \|url=https://developer.mozilla.org/en/Firefox_10_for_developers#JavaScript \|archive-url=https://web.archive.org/web/20120505042844/https://developer.mozilla.org/en/Firefox_10_for_developers#JavaScript \|archive-date=5 May 2012 \|access-date=21 May 2012 \|publisher=Mozilla}}</ref> and eventually removed in Firefox 21.<ref>{{cite web \|title=E4X \|url=https://developer.mozilla.org/en-US/docs/E4X \|archive-url=https://web.archive.org/web/20130930214422/https://developer.mozilla.org/en-US/docs/E4X \|archive-date=30 September 2013 \|access-date=12 February 2013 \|publisher=Mozilla}}</ref>{{Clarification needed\|reason=Was it removed from SpiderMonkey at the same time?\|date=August 2024}}		E4X was supported by [[SpiderMonkey]] (used in [[Firefox]] and [[Mozilla Thunderbird\|Thunderbird]]). However, E4X was deprecated in Firefox 10<ref>{{cite web \|title=Firefox 10 for developers \|url=https://developer.mozilla.org/en/Firefox_10_for_developers#JavaScript \|archive-url=https://web.archive.org/web/20120505042844/https://developer.mozilla.org/en/Firefox_10_for_developers#JavaScript \|archive-date=5 May 2012 \|access-date=21 May 2012 \|publisher=Mozilla}}</ref> and eventually removed in Firefox 21.<ref>{{cite web \|title=E4X \|url=https://developer.mozilla.org/en-US/docs/E4X \|archive-url=https://web.archive.org/web/20130930214422/https://developer.mozilla.org/en-US/docs/E4X \|archive-date=30 September 2013 \|access-date=12 February 2013 \|publisher=Mozilla}}</ref>{{Clarification needed\|reason=Was it removed from SpiderMonkey at the same time?\|date=August 2024}}

	E4X was supported by the [[OpenOffice.org]] software suite.{{Citation needed\|date=August 2024}}		E4X was supported by the [[OpenOffice.org]] software suite.{{Citation needed\|date=August 2024}}
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	==See also==		==See also==
	* [[JSX (JavaScript)~~\|JSX~~]] – an XML based markup specifically for DOM manipulation		* [[JSX (JavaScript)]] – an XML based markup specifically for DOM manipulation

	==References==		==References==
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	* [https://web.archive.org/web/20080704203050/http://developer.yahoo.com/flash/articles/e4x-beginner-to-advanced.html E4X: Beginner to Advanced] at Yahoo Developer Network		* [https://web.archive.org/web/20080704203050/http://developer.yahoo.com/flash/articles/e4x-beginner-to-advanced.html E4X: Beginner to Advanced] at Yahoo Developer Network

	~~{{-}}~~
	{{Ecma International Standards}}		{{Ecma International Standards}}
	{{ISO standards}}		{{ISO standards}}
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	[[Category:XML]]		[[Category:XML]]
	[[Category:Ecma standards]]		[[Category:Ecma standards]]
			<!-- Hidden categories below -->
			[[Category:Articles with example JavaScript code]]

imported>Winderz IoT: /* Browser support */ This only links to the Internet Explorer version

2025-01-21T11:47:10Z

Browser support: This only links to the Internet Explorer version

New page

'''ECMAScript for XML''' ('''E4X''') was an extension to [[ECMAScript]] (which includes [[ActionScript]], [[JavaScript]], and [[JScript]]) to add native support for [[XML]].<ref name="ISO 22537:2006">{{Cite web |title=ISO/IEC 22537:2006 Information technology – ECMAscript for XML: E4X specification |url=https://www.iso.org/standard/41002.html |access-date=2024-08-17 |website=International Organization for Standardization |language=en}}</ref> The goal was to provide a simpler alternative to the [[Document Object Model|DOM]] interface for accessing XML documents. E4X added XML as a [[primitive (computer science)|primitive]] data structure to allow for faster access{{Clarification needed|date=August 2024}} and better support within the language.

E4X was standardized by [[Ecma International]] in the [https://web.archive.org/web/20131104082608/http://www.ecma-international.org/publications/standards/Ecma-357.htm ECMA-357 standard]. The first edition was published in June 2004 and the second edition in December 2005. However, the E4X standard was deprecated by the Mozilla Foundation in 2014,<ref>{{cite web|title=E4X – Archive of obsolete content – MDN|url=https://developer.mozilla.org/en-US/docs/Archive/Web/E4X|publisher=Mozilla|access-date=10 September 2014|archive-date=24 July 2014|archive-url=https://web.archive.org/web/20140724100129/https://developer.mozilla.org/en-US/docs/Archive/Web/E4X|url-status=dead}}</ref> and it was withdrawn by ISO/IEC in 2021.<ref name="ISO 22537:2006" />

The first implementation of E4X was designed by Terry Lucas and John Schneider and appeared in [[BEA Systems|BEA]]'s Weblogic Workshop 7.0, released in February 2002.{{Citation needed|date=August 2024}} BEA's implementation was based on [[Rhino (JavaScript engine)|Rhino]] and released before the ECMAScript E4X spec was completed in June 2004.{{Citation needed|date=August 2024}}

==Browser support==
E4X is supported by Mozilla's [[Rhino (JavaScript engine)|Rhino]], as well as by [[Tamarin (JavaScript engine)|Tamarin]], the JavaScript engine used in the [[Adobe Flash|Flash]] virtual machine.{{Citation needed|date=August 2024}} However, it is not supported by other common engines like [[SquirrelFish|Nitro]] ([[Safari (web browser)|Safari]]), [[V8 (JavaScript engine)|V8]] ([[Google Chrome]]), [[Carakan (script engine)|Carakan]] ([[Opera (web browser)|Opera]]), and [[Chakra (JScript engine)|Chakra]] ([[Internet Explorer]]).<ref>{{cite web|title=Issue 30975: Implement E4X Support for scripts and extensions|url=http://code.google.com/p/chromium/issues/detail?id=30975|access-date=21 May 2012}}</ref>

E4X was supported by [[SpiderMonkey (JavaScript engine)|SpiderMonkey]] (used in [[Firefox]] and [[Mozilla Thunderbird|Thunderbird]]). However, E4X was deprecated in Firefox 10<ref>{{cite web |title=Firefox 10 for developers |url=https://developer.mozilla.org/en/Firefox_10_for_developers#JavaScript |archive-url=https://web.archive.org/web/20120505042844/https://developer.mozilla.org/en/Firefox_10_for_developers#JavaScript |archive-date=5 May 2012 |access-date=21 May 2012 |publisher=Mozilla}}</ref> and eventually removed in Firefox 21.<ref>{{cite web |title=E4X |url=https://developer.mozilla.org/en-US/docs/E4X |archive-url=https://web.archive.org/web/20130930214422/https://developer.mozilla.org/en-US/docs/E4X |archive-date=30 September 2013 |access-date=12 February 2013 |publisher=Mozilla}}</ref>{{Clarification needed|reason=Was it removed from SpiderMonkey at the same time?|date=August 2024}}

E4X was supported by the [[OpenOffice.org]] software suite.{{Citation needed|date=August 2024}}

==Example==
<syntaxhighlight lang="jsx">
var sales = <sales vendor="John">
<item type="peas" price="4" quantity="6"/>
<item type="carrot" price="3" quantity="10"/>
<item type="chips" price="5" quantity="3"/>
</sales>;

alert( sales.item.(@type == "carrot").@quantity );
alert( sales.@vendor );
for each( var price in sales..@price ) {
alert( price );
}
delete sales.item[0];
sales.item += <item type="oranges" price="4"/>;
sales.item.(@type == "oranges").@quantity = 4;
</syntaxhighlight>

==See also==
* [[JSX (JavaScript)|JSX]] – an XML based markup specifically for DOM manipulation

==References==
{{Reflist}}

==External links==
* ECMA-357 (withdrawn [http://www.ecma-international.org/publications/files/ECMA-ST-WITHDRAWN/ECMA-357,%201st%20edition,%20June%202004.pdf first edition], [http://www.ecma-international.org/publications/files/ECMA-ST-WITHDRAWN/Ecma-357.pdf second edition])
* [http://www.faqts.com/knowledge_base/index.phtml/fid/1762 E4X at faqts.com] (or via [https://web.archive.org/web/20090129224344/http://faqts.com/knowledge_base/index.phtml/fid/1762 WayBack Machine])
* [https://web.archive.org/web/20081005063311/http://developer.mozilla.org/presentations/xtech2005/e4x/ Slides from 2005 E4X Presentation by Brendan Eich, Mozilla Chief Architect]
* [https://developer.mozilla.org/en/docs/E4X E4X at Mozilla Developer Center] {{Webarchive|url=https://web.archive.org/web/20080419080706/https://developer.mozilla.org/en/docs/E4X |date=2008-04-19 }}
* [http://www.xml.com/pub/a/2007/11/28/introducing-e4x.html Introducing E4X at xml.com]: compares E4X and json
* [https://web.archive.org/web/20081006212236/http://developer.mozilla.org/index.php?title=En%2FCore_JavaScript_1.5_Guide%2FProcessing_XML_with_E4X Processing XML with E4X] at Mozilla Developer Center
* [https://web.archive.org/web/20080704203050/http://developer.yahoo.com/flash/articles/e4x-beginner-to-advanced.html E4X: Beginner to Advanced] at Yahoo Developer Network

{{-}}
{{Ecma International Standards}}
{{ISO standards}}
{{List of IEC standards}}

{{DEFAULTSORT:Ecmascript For Xml}}
[[Category:XML]]
[[Category:Ecma standards]]