This a significant update of the ECMAScript 5 Conformance Test Suite adding about 400 new tests. In addition, tests have been removed or modified to better match the final verions of the ES5 specifications.

This version contains 1236 tests that primarily focus on testing features that are new in ES5. However, some tests that also test features that exist in ES3 have also been added.

To run the tests on your favorate browser simply download the zip file, unpack, and ofen the file runtests.html using your browsers.