I would recommend learning a language and becoming an expert at it. Right now JS is positioned to be a great language for the web - for two reasons. It's the on

I would recommend learning a language and becoming an expert at it. Right now JS is positioned to be a great language for the web - for two reasons. It's the only, defacto language that can be used in the browser (dart is on it's way but right now it's not here.) Also with Node.js gaining popularity, you can use JS to build server side applications. It's a win-win situation if you know Javascript.