I picked this book up in 2005, when I started to have a more significant need for JavaScript. Although there was a great deal of information available on the internet, I was looking for a more centralized repository of knowledge.
This book proved to be just what I was looking for, and just what it's title promised. There has not been to many problems that this book has not been able to help me solve. And, for those rare occasions where I could not solve the problem, it was more often than not due to the simple fact JavaScript simply could not be made to perform a particular task.
To this day, I still refer to this book on a regular basis.
This was a very comprehensive book on JavaScript (as its name implies). Though the book is quite old, it still includes a lot of useful information. Anyone who wants to get a more overall picture of JavaScript could get a lot out of this book.