Rating: 

The book is really 3 references bound together. The first part is about JavaScript, its background, how it is used (with examples), and its relationship to the web page, DOM, CSS, and HTML. This part focuses on using JS to make web pages dynamic on the client side.

Part 2 is a guide to the object, methods, and properties that are built into JS. This section is an excellent reference to programmers since it is difficult to remember the hundreds of built in methods and properties for each object. JS does not have an extremely large number of objects but does have a large number of properties and methods.

The last part provides a reference about the client side environment. For example the "document" object is detailed.

When I need a JS reference, it is generally to look up an example, to get a listing of the offerings for a particular object, or to see the names and/or spellings of various methods and properties. This is the most complete manual I have seen and one of the easiest to use to locate the information, which is good since the book is long.

The book is organized like a reference as well; especially in parts 2 and 3. The material is generally in alphabetic order with methods and properties also listed alphabetically under each object.

For web programmers, this is a must-have.