Unfortunately, this book is not 'JavaScript Pocket Reference, 3rd edition' but really 'JavaScript Pocket *Guide*, 1st edition'. Gone is the last part of the book with the description of the language's classes with their members and methods and occasional details about various browser differences.
I really like the 2nd edition and use it a lot, and was hoping to get the *same* book, just updated to the latest version of the language.
As a pocket guide, by quickly browsing the book, it looks like it deserves at least 4 stars, but this review is for the pocket reference.