>-----Original Message----- >From: Brendan Eich [mailto:[email protected]] >> >> IE8 does have a form of global object versioning. In IE8 the JSON >> object and associated toJSON methods, the methods >> Object.defineProperty and Object.getOwnPropertyDescriptor(they only >> supports DOM objects in IE8), and a few other minor standards/interp >> conformance fixes are only provided for pages/iframes operating in >> "IE8 standards mode" (the default mode). This was a very late >> change in the IE development cycle a was primarily made in response >> to user feedback concerning the IE8 release candidate >(http://blogs.msdn.com/ie/archive/2009/03/20/rtm-platform-changes.aspx >> ). We'll see how it works out... > >Sorry, I think you mentioned this and I forgot. But this is an all-or- >nothing mode, I take it -- not a subjective-programming (ES4 >namespaces) facility where one script might run in IE7 mode and see no >JSON property on the very same global object on which another script >in IE8 mode sees the ES5 JSON object. Or so I hope! > That's right, it's an all-or-nothing configuration of the global object and the other built-in objects accessed via it. I would think that a similar interpretation might reasonably be applied to a version specified in the "Content-Script-Type" meta tag.
Allen _______________________________________________ es-discuss mailing list [email protected] https://mail.mozilla.org/listinfo/es-discuss
