Rhino and Javascript 1.8?

Is it possible to have Rhino use a newer implementation of JS than 1.7?

Do we have to wait for mozilla to do this, or is there a co开发者_如何学运维mmunity project that has taken the lead?

Thanks.

I don't know about JavaScript 1.8, but I know they are actively working on ECMAScript 5 support. The RingoJS project (formerly Helma NG) has a customized branch that implements some of the new features from 1.8 and ECMAScript 5. For example, it supports function expressions (f = function(x) 2 * x; instead of f = function(x) { return 2 * x; }), JSON.stringify/parse, and Object.create/seal/freeze.

I'm sure Mozilla would welcome any help moving to 1.8, but I'm not aware of any projects right now that are working on that.

Umm ... Rhino doesn't use an implementation of Javascript, it is an implementation of Javascript.

SpiderMonkey runs JS 1.8, but is implemented in C instead of Java, not sure if it makes a difference for you.