Affecting E4X has been disabled

Published: | Categories: JavaScript


ECMAScript for XML (E4X) has been deprecated and disabled in Firefox 17. Though the feature can be enabled by changing the value of a hidden preference javascript.options.xml.content to true, the implementation will be completely removed from Firefox 18 a near-future version of Firefox (the original plan was Firefox 18 but currently TBD).

Update: The E4X support has been removed with Firefox 21.