Should I split my javascript into multiple files?

Question

I\'m used to working with Java in which (as we know) each object is defined in its own file (generally speaking). I like this. I think it makes code easier to work with and

Answer 1

There are two concerns here: a) ease of development b) client-side performance while downloading JS assets

As far as development is concerned, modularity is never a bad thing; there are also Javascript autoloading frameworks (like requireJS and AMD) you can use to help you manage your modules and their dependencies.

However, to address the second point, it is better to combine all your Javascript into a single file and minify it so that the client doesn't spend too much time downloading all your resources. There are tools (requireJS) that let you do this as well (i.e., combine all your dependencies into a single file).