ECMAScript is the scripting language that forms the basis of JavaScript. ECMAScript is standardized by the Ecma International standards organization in the ECMA-262 and ECMA-402 specifications. The following ECMAScript standards have been approved:
Name | Links | Date | Description |
---|---|---|---|
ECMA-262 Edition 5.1 | PDF, HTML | June 2011 | ECMAScript 5.1, the latest published revision of the Language Specification. This version is fully aligned with 3rd edition of the international standard ISO/IEC 16262:2011. It includes ES5 errata fixes, no new features. |
ECMA-402 | PDF, HTML | December 2012 | ECMAScript Internationalization API. |
ECMA-357 Edition 2 | December 2005 | ECMAScript for XML (E4X). | |
Obsolete Editions | |||
ECMA-262 | June 1997 | the original ECMAScript standard. | |
ECMA-262 Edition 2 | August 1998 | the second revision of the ECMAScript standard; also ISO standard 16262. | |
ECMA-262 Edition 3 | December 1999 | the third revision of the ECMAScript standard; corresponds to JavaScript 1.5. See also the errata |
|
ECMA-262 Edition 5 | December 2009 | ECMAScript 5 See also the ES5 errata and ECMAScript 5 support in Mozilla |
|
ECMA-357 | June 2004 | ECMAScript for XML (E4X). See also the E4X errata. |
See wikipedia ECMAScript entry for more information on ECMAScript history.
You can participate in or just track the work on the next revisions of the ECMAScript Language Specification, code-named "Harmony", and the ECMAScript Internationalization API Specification via public wiki and the es-discuss mailing list linked from ecmascript.org.
Implementations
- SpiderMonkey - the JavaScript engine used in Firefox;
- Rhino - the JavaScript engine written in Java;
- Tamarin - the ActionScript virtual machine (used in the Adobe® Flash® Player);
- Other implementations (wikipedia).
See also
- Brendan Eich's blog. Brendan is the creator of JavaScript and the SpiderMonkey JS engine. He still works with the ECMA working group to evolve the language.
- Dmitry Soshnikov's analysis of ECMA-262 Edition 3 and 5