Introduction

Back in 1999, I wrote a book on JavaScript. At the beginning, it sold really great, and then sales started to decrease a little bit. It still sold well enough to reach seven editions by this fall, but there was a subtle decline in copies nevertheless.

However, all of this changed drastically at the end of last year—sales went up considerably, as did sales of other titles in the same segment. But how come? One of the reasons is AJAX. The technology itself is not new, but the term is. In February 2005, Jesse James Garrett coined the acronym, and since then, the whole web world seems to have gone crazy. And although AJAX can be explained in a couple of minutes actually, it requires a good knowledge of various aspects of JavaScript. ...

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