ECMAScript Version Support
| Trident | Gecko | WebKit | Presto | Chrome Webkit | |
|---|---|---|---|---|---|
| Name of ECMAScript Engine | JScript/Chakra | Spidermonkey/TraceMonkey | JavaScriptCore/SquirrelFish Extreme | Linear B/Futhark/Carakan | V8 |
| ECMAScript Edition 3 | Yes | 0.6 | Yes | 1.0 | Yes |
| ECMAScript Edition 5 | 5.0 | 2.0 | Partial | Yes | Yes |
| JavaScript 1.5 extensions | No | 0.6 | Yes | 1.0 | Yes |
| JavaScript 1.6 extensions (excluding E4X) |
No | 1.8 | Partial | Partial | Partial |
| JavaScript 1.7 extensions | No | 1.8.1 | No | Partial | No |
| JavaScript 1.8 extensions | No | 1.9 | Partial | No | Partial |
| JavaScript 1.8.1 extensions | No | 1.9.1 | No | No | No |
| JScript .NET extensions | No | No | No | No | No |
| ActionScript extensions | No | No | No | No | No |
| E4X | No | Dropped | No | No | No |
Read more about this topic: Comparison Of Layout Engines (ECMAScript)
Famous quotes containing the words version and/or support:
“I should think that an ordinary copy of the King James version would have been good enough for those Congressmen.”
—Calvin Coolidge (1872–1933)
“Criticism is a study by which men grow important and formidable at very small expense. The power of invention has been conferred by nature upon few, and the labour of learning those sciences which may, by mere labour, be obtained, is too great to be willingly endured; but every man can exert some judgment as he has upon the works of others; and he whom nature has made weak, and idleness keeps ignorant, may yet support his vanity by the name of critic.”
—Samuel Johnson (1709–1784)