Best approach to avoid javascript's "this" mistakes

Question

In some cases, the this keyword may not refer to the object I expect it to. (recent example: in an key event, in my XBL)

What's the best approach to avoid this kind of mistake?

For now, I'm using always the $.fn from jQuery to store my variables, but I'm not sure if it's the best approach.

Answer 1

Learn how and why this behaves the way it does, then read the code you're working on.

Don't trust some magic functionality, you might always end up with unexpected results if you don't know/read the code.

There's simply no single awesome solution for this "problem".