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I noticed that v8 is rather mute on the issue of ECMAScript 5th edition. V8 implements ECMAScript as specified in ECMA-262, 3rd edition, and runs on Windows XP and Vista, Mac OS X 10.5 (Leopard), and Linux systems that use IA-32 or ARM processors. Even the bug tracker seems quiet... ECMA 5 Javascript 1.8 On one bug you can find a commiter writing this: V8 is an implementation of ECMAScript, not JavaScript. The latter is a non-standardized extension of ECMAScript made by Mozilla. V8 is intended to be plug-in compatible with JSC, the ECMAScript implementation in WebKit/Safari. As such it implements a number of non-standard extensions of ECMAScript that are also in JSC, and most of these are also in Mozilla's JavaScript languages. There is no plan to add non-standard features that are not in JSC to V8. Interestingly enough he wrote that on Oct 8, 2010, when ECMAScript 5 was published on December 2009, and two months earlier Javascript 1.8.5 -- a superset of ECMAScript 5 -- was released. So the question remains when will Google update v8 to run on ECMAScript 5th edition? Is there even a plan to upgrade to the latest standardization of ECMAScript?

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