A great introductory JavaScript book. Much better than the previous one I read, JavaScript and jQuery by Jon Duckett. A kind of coffee table one full of pictures aimed more at a general reader wanting to understand, rather than a coder. Enough of that book though.
If you enjoyed the style of Python Crash Course, this is very similar. Good breakdown of key syntax to get you started with plenty of simple code examples. Approaches some of the depth of prototype inheritance, method overloading, but without dwelling on theory and implementation details. Practical, fun and varied projects / exercises at the end (including making a small game).
All in all, this is a great JavaScript book for someone who is either new to / getting into web development or anyone who has coded in other languages and wanting to add JS to their repertoire.