Strictly speaking JavaScript 1.7 is Mozilla's own programming language. V8 does not implement it, instead it implements ECMAScript as described in the ECMA-262 standard. Latest edition of ECMA-262 is 5th and it is fully supported by V8.
Now some features from the 6th edition (that is currently being worked on) are somewhat supported by V8 but they are all hidden behind the --harmony flag.
Generators are actually also in ES6 (though they are a bit different from JavaScript 1.7) so sooner or later they will make their way into V8.
You can star the issue[1] to be notified when the progress is made.
Now some features from the 6th edition (that is currently being worked on) are somewhat supported by V8 but they are all hidden behind the --harmony flag.
Generators are actually also in ES6 (though they are a bit different from JavaScript 1.7) so sooner or later they will make their way into V8.
You can star the issue[1] to be notified when the progress is made.
[1] https://code.google.com/p/v8/issues/detail?id=2355