ECMAScript standard
ECMAScript is a scripting programming language, standardized by Ecma International in the ECMA-262 specification.
Versions
{| class="wikitable" |- style="background: #ccccff;" !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. |
| - |
| 5.1 |
| June 2011 |
| Corrected errors in the specification. |
| } |