What's a good javascript guide?

[Dave]

I'm having trouble with my javascript code and was wondering if ya'll knew of any good places that explain it. I would just use the official one, but neither Safari or FF seem to implement that version. For instance, I can declare one variable, and it works. But if I copy/paste, change the name and the value, I get an undefined object error when I run the code.

[Brad]

I found this page a while back and thought it looked like a good beginners guide:

Essential Javascript -- A Javascript Tutorial (http://www.hunlock.com/blogs/Essential_Javascript_--_A_Javascript_Tutorial)

[Dave]

Cool, thanks :)

[Partial]

just as an added tip, Firebug is by far the greatest plugin in the world.

[Gargoyle]

Once you have got a grasp of the basics, checkout http://developer.yahoo.com/yui/theater/. Especially the Douglas Crockford ones for a bit more advanced javascript and a good background about the language.