Firefox fails ecmascript test

ECMAScript, the self proclaimed "language of the web" has become the cornerstone of contemporarty web front end engineering.

There is an official test suite maintained by ECMAScript, which will allow anyone to test his/her browser against the specs. This would run a test suite of more than 1000 tests and give a report.

I evaluated FireFox4, Safari on my Mac OSX 10.6.7

Firefox 4 results of ECMAScript at test262.com

Turned to Safari5