Dave Fugate of Microsoft announced an update to test262.ecmascript.org, the test suite for ECMAScript 5. I thought I would check it out. Internet Explorer 9 was tested on 32bit Windows Vista, while the others were all tested on Mac OS X 10.5.
| Browser | Tests To Run | Total Tests Ran | Pass | Fail | Failed To Load |
| Internet Explorer 9 | 10456 | 10456 | 10439 | 17 | 0 |
| Firefox 4.0 | 10456 | 10456 | 10155 | 301 | 0 |
| Chrome 10 | 10456 | 10456 | 9959 | 497 | 0 |
| Safari 5.0.4 | 10456 | 10456 | 9156 | 1300 | 72 |
| Opera 11 | 10456 | 10456 | 6905 | 3551 | 66 |
The test suite looks very cool. Kudos to everyone involved in creating test262!