ECMAScript standard: Difference between revisions
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==Versions== |
==Versions== |
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There are three editions of ECMA-262 published, and the work on the fourth edition is in progress. |
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|4 |
|4 |
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|Abandoned |
|Abandoned |
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|[http://stackoverflow.com/questions/2329602/why-was-ecmascript-4th-edition-completely-scrapped |
|[http://stackoverflow.com/questions/2329602/why-was-ecmascript-4th-edition-completely-scrapped Rejected] for proposing too much new syntax and too many extra features. |
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|5 |
|5 |
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|December 2009 |
|December 2009 |
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|Added [[JSON]] library, <code>use strict</code> mode, |
|Added [[JSON]] library, <code>use strict</code> mode, property accessors, immutable objects, additional reflection facilities, and more. |
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|5.1 |
|5.1 |
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Latest revision as of 20:23, 9 October 2011
ECMAScript is a scripting programming language, standardized by Ecma International in the ECMA-262 specification.
Versions
| Edition | Date published | Differences to the previous edition |
|---|---|---|
| 1 | June 1997 | First edition, editor Guy L. Steele, Jr. |
| 2 | June 1998 | Editorial changes to keep the specification fully aligned with ISO/IEC 16262 international standard; editor Mike Cowlishaw. |
| 3 | December 1999 | Added regular expressions, better string handling, new control statements, try/catch exception handling, tighter definition of errors, formatting for numeric output and other enhancements; editor Mike Cowlishaw. |
| 4 | Abandoned | Rejected for proposing too much new syntax and too many extra features. |
| 5 | December 2009 | Added JSON library, use strict mode, property accessors, immutable objects, additional reflection facilities, and more.
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| 5.1 | June 2011 | Corrected errors in the specification. |