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Introducing Microsoft® ASP.NET AJAX by Dino Esposito

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Chapter 2. The Microsoft Client Library for AJAX

Most of the power of AJAX resides on the client and is strictly related to the browser’s and platform’s client-side functionality. Even though a large share of AJAX pages are built using a slightly different set of server controls, they couldn’t work without a powerful environment available on the client and written in JavaScript. Such a script code governs the execution of out-of-band calls and often kicks in and replaces regular postbacks with AJAX postbacks. No AJAX functionality would ever be possible without JavaScript and a standard (and rich) Document Object Model (DOM). The DOM, though, is not enough.

The DOM represents ...

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