History and Development
LiveScript and Mosaic Communications CorporationThe company Netscape, at the origin known under the name of Mosaic Communications Corporation, developed a language of script side waiter, called LiveScript, to reinforce the commercial offer of its Web server. The exit of LiveScript intervened at the time where NCSA force Mosaic Communications Corporation to change name to become Netscape.
ECMA-262There exist to date 3 versions of standard ECMA-262.
ECMAScript Edition 4Fourth under development, and is often named ECMAScript Edition 4 .
E4XECMAScript for XML (E4X) is an extension XML to the ECMAScript language. It is indeed a different standard: ECMA-357 (in).
Note (2): Microsoft indicates that JScript 8.0 supports “almost all the characteristics of ECMAScript Edition 3" but does not give list of the not supported characteristics.
Note (3): In addition to the support of ECMA-262 edition 3, ActionScript 2 also included a support of the properties, functions and mechanism which had been proposes in a preliminary version of ECMA-262 edition 3. It is not known if ActionScript will remain synchronized with future modifications of the specifications of ECMAScript.
Note (4): Adobe indicates to support a preliminary version of edition 4 of ECMA-262
Note (5): OpenLaszlo supports ECMA-262 edition 3 partially
ECMAScript Edition 4 (ES4)The first work was criticized because they modified the nature of the language, which passed from a model of programming with the prototype towards a traditional model based on the classes like Java or C#.
This model directed prototype is for much the most powerful model under development directed object.
A first version of the reference frame of implementation of ECMAScript 4 is available since June 2007.
Notes & references
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