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19 December 2009
This is the first book that I tried on the subject.
I found that the book started quite well, but then went into large chunks of code which were not very well explained or commented. The initial connection was commented within the code and that comment was then included in every example, but in other places the comments were badly missed.
The examples are not explained very well and I found it difficult to follow the book. There are some useful examples in this book, but due to the difficulty following them I'd suggest a different book instead.
Bulletproof Ajax is a much better book. It seams particularly thin at only 216 pages but the content is well explained and easy to follow.
There is very little discussion about the PHP used to provide the data at the back end which I don't think is necessarily a bad thing. Where PHP is used in Ajax it is just standard programming and does not require PHP to do anything different between Ajax and standard PHP web sites (except perhaps ignore a few headers or output as XML depending upon your preferred implementation), as such PHP is adequately covered in any book on the subject.
Bulletproof Ajax provides an excellent introduction to Ajax and has enough to get you started in programming Ajax. Highly recommended.
The section on Ajax provides an explanation of the technology and examples of how to apply it but it's not as readable as the other books mentioned.