ECMA script had a few additional but we care about is additional three. Who supported all browsers.
· ECMA Script 3.
· ECMA version5 was published at the end of 2009 and was added new few functions.
· ECMAScript 5 Published.
One of the benefits of the having standardize languages like this, it does not matter. If you have Mac or PC, Linux versions. It does not matter if your server is on Windows or Apache or back end PHP, or Ruby on Rails. ASP.net or ColdFusion or none of the above. There is no special tools are required and no license is needed.
But make sure that you have a text editor. Any text editors you can use whom you are familiar.