E4X
ECMAScript for XML （E4X）是一扩展了ECMAScript（JavaScript）的程式語言，它增加本地XML支持，為ECMAScript程序員提供了一種感覺直觀的方式來訪問XML文檔。它的目標是提供一種使用簡潔語法的DOM接口用於訪問XML文檔。
一些非中文的文字因为尚未翻譯而被隐藏，歡迎參與翻譯。
is a programming language extension that adds native XML support to ECMAScript (JavaScript). It does this by providing access to the XML document in a form that feels natural for ECMAScript programmers. The goal is to provide an alternative to DOM interfaces that uses a simpler syntax for accessing XML documents. It also offers a new way of making XML visible. Before the release of E4X XML was always accessed at an object level. E4X changed that. It treats XML as a primitive (equivalent to a character, integer, or boolean). This implies faster access, better support, and acceptance as a building block (data structure) of a program.
E4X is standardized by Ecma International in ECMA-357 standard. The first edition was published in June 2004, the second edition in December 2005.
[编辑] 實現
E4X在(至少部分地)SpiderMonkey(Gecko的JavaScript引擎)和Rhino中實現。
Mozilla Firefox是基於Gecko引擎的，所以它可以用E4X運行腳本。該規範相當新，只有1.5版本及以上支持。
Macromedia的ActionScript3腳本語言完整地支持E4X，ActionScript3在2005年末已可用。
注意：為了正確地在Firefox 1.5中運行E4X，你必須在腳本的HTML標籤中將類型（type）值後面加入“; e4x=1”字串（例：<script type="text/javascript; e4x=1">）。
[编辑] 外部链接
- Tutorial from W3 Schools
- ECMA-357 standard
- E4X at faqts.com
- Slides from E4X Presentation by Brendan Eich, Mozilla Chief Architect
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| 文档呈现语言 | HTML* - XHTML* - XML* - XForms* - DHTML* |
| 样式格式描述语言 | CSS* - XSL* |
| 动态网页技术 | CGI - ASP - ASP.NET - ColdFusion - JSP - PHP |
| 客户端交互技术 | ActiveX - Java Applet - Flash - AJAX - XMLHTTP* - Silverlight |
| 客户端脚本语言 | JavaScript - JScript - VBScript - ECMAScript |
| 标识定位语言 | URL - URI - XPath |
| 文档纲要语言 | DTD* - XML Schema* |
| *由W3C制定和维护的标准与规范 | |
