Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Use O'Reilly instead!

I bought this book after reading all the great reviews and was sadly disappointed. Granted, this is an exhaustive reference covering objects, properties, event handlers, methods and functions. However, the examples have absolutely no context to them at all. Further, I found inaccuracies about which objects are supported in which browsers (e.g. indicates that navigator.plugins is supported in IE and this is false). This means that this boos is useful purely as a reference, where you know EXACTLY what it is that you want to do, EXACTLY what method you are looking for to do something, that you need no illustrative application examples, and also that you are very experienced in browser compatibility issues. Personally, I feel the O'Reilly definitive guide is far better, both as a reference and as guide.