I must echo this sentiment and also mention a few non-books that were instrumental for me.
For my new job (first out of college) I have read ~5 javascript books cover to cover and flipped through a few more.
Crockford's book was by far the most enlightening and made the most immediate impact on my understanding and methods of coding.
Second, for me, was John Resig's blog (http://ejohn.org/blog)
And third I suppose might be looking through the way people have written things on github:
https://github.com/nzakas
https://github.com/jquery/jquery