(This book is the most comprehensive and in-depth work in the Ajax field. It is not only about the introduction of basic knowledge, but also about the in-depth discussion of serious system architecture problems in Ajax development. It summarizes many design patterns in Ajax development, and comments on the framework, security and functions. The book provides several typical examples, such as coordinating various development platforms. The code of these examples can be directly used for project development with minor modifications. The code source file can be downloaded from Turing website. This book is extensive and in-depth. It is applicable to all levels of Web use. Developers can't solve the problem. Come to our Open Source to have a look. There will be materials or software you need, tutorials, patches, source code, etc)