This book sucks ass through screen doors. The style is oversimplified and condescending, it doesn't cover anything in depth, and half the shit it says is wrong, dammit!
For example, I wanted to know how to find something in a string, and preferably replace it. Does the book cover any string operations at all? No! It blithers on about different kinds of quotation marks for awhile, then shows how to use the + sign as a concatenation operator. Hint: when I remember more javascript from 1998 than this fucking book spells out, that's a really bad sign! Argh!