JavaScript resources

I thought that I should do a post about the JavaScript resources I've found most useful. There are an endless amount of JavaScript resources out there and and there is only so much time you can spend going through them to find what you need. This is my attempt at gathering some of the best I know. So here goes.

JavaScript basics

This list became long enough so I will do another post on Ajax resources later on.

What have I missed?

Disclaimer: The opinions expressed herein are my own personal opinions and do not represent my employer's view in any way.