While you are learning javascript, learn functional programming. You don't need to learn a new language, but you have access to most of the functional goodies,

While you are learning javascript, learn functional programming. You don't need to learn a new language, but you have access to most of the functional goodies, like higher order functions, closures, and from that interesting patterns like Functional-Reactive-Programming, that is all in rage now ... and maybe even replacing the popular Model-View-Control pattern. I have to admit, I like to experiment with weirder stuff. Haskell is awesome. Incomprehensible sometimes, but it is the only language I know of, that implements interfaces for you :D