Prototype and Scriptaculous in Action [Ajax]
A good solid intro. ... There is fantastically useful stuff about  JavaScript itself as well as Prototype; for example the section of function  contexts and closures is one of the best I have read on the subject. --N. J. Ferrier at Amazon UKPretty darned definitive Plenty of useful examples, including counter-examples Shows how to migrate existing code, not just start from scratch Scriptaculous labs are excellent, and are available for download Okay, all the labs are excellent JavaScript haters beware! Prototype, Scriptaculous, and yes, this excellent  book about these two JavaScript libraries, could change your mind. After  reading Prototype and Scriptaculous In Action, you are in danger of saying  to yourself, "Hey, I'd like to try some of this stuff out," and, before you  even realize it, you're writing JavaScript, getting stuff done, and maybe  even enjoying it.This book should rightly be considered the bible of Prototype and  Scriptaculous. Just download and run the source code for the book  (available online for free), for a real taste of what this book offers. --John Guthrie at JavaLobbyThis book should be in your library if you are planning to use one  of these powerful and useful libraries as well as if you want to learn more  advanced topics in JavaScript too! Worth every penny. --Frank Stepanski at Barnes and Noble and bookpool.com