ECMAScript For XML - Implementations

Implementations

The first implementation of E4X was designed by Terry Lucas and John Schneider and appeared in BEA's Weblogic Workshop 7.0 released in February 2002. BEA's implementation was based on Rhino and released before the ECMAScript E4X spec was completed in June 2004. John Schneider wrote an article on the XML extensions in BEA's Workshop at the time.

• E4X is implemented in SpiderMonkey (Gecko's JavaScript engine) since version 1.6.0 and in Rhino (Mozilla's other JavaScript engine written in Java instead of C) since version 1.6R1.
• As Mozilla Firefox is based on Gecko, it can be used to run scripts using E4X. But this feature is deprecated since release 16 and removed in release 18.
• Adobe's ActionScript 3 scripting language fully supports E4X. Early previews of ActionScript 3 were first made available in late 2005. Adobe officially released the language with Flash Player 9 on June 28, 2006.
• E4X is available in Flash CS3, Adobe AIR and Adobe Flex as they use ActionScript 3 as a scripting language.
• E4X is also available in Adobe Acrobat and Adobe Reader versions 8.0 or higher.
• E4X is also available in Aptana's Jaxer Ajax application server which uses the Mozilla engine server-side.
• Since the release of Alfresco Community Edition 2.9B, E4X is also available in this enterprise document management system.