Nodejs: Where or How to write complicated business logic?

Question

Recently I got introduced to node.js and cool packages like express and jade. I have few questions consistently knocking my door:

If I pick node.js to build my next webs

Answer 1

There are some things that JavaScript just can't do. If you come up against those Node might not be the best choice for your app. However you can probably accomplish most of what you need.

As far as the API being limited, I suggest you take a look at npm and all the libraries in its repository. Specifically ones like underscore.js. Many aim to fill in the gaps of what native JavaScript lacks compared to other languages.