I’ve seen several JavaScript libraries starting to use Docco to generate documentation from JavaScript files. If you are on Mac or Linux then that is the way to go, if you happen to be like me on Windows, then you are likely to spend some hours like I did trying to get it running unsuccessfully.
After some further reading and, since at the background Docco uses a Python module, I decided to install Pycco, a Python port of Docco. To my surprise in less than 10 mins I was already creating docs from my JavaScript sources.