Professional Ajax 2nd Edition provides a developer-level tutorial Ajax techniques, patterns, and the case is used. The book begins by exploring the roots of Ajax, covering how the evolution of web and new technologies directly led to the development of Ajax techniques. After a basic understanding of the various types of requests that are discussed, this book moves to provide in-depth examples of how and when to use Ajax in a web site or web application. Also included is a discussion about web services and how they can be used to perform Ajax techniques. The last part of this book goes through the creation of two full Ajax web applications. Professional Ajax 2nd edition is written for Web application developers who want to improve the usability of their web sites and web applications and intermediate JavaScript developers looking to further understand the language. Those readers without such knowledge should instead refer to books such as Beginning JavaScript, Second Edition (Wrox, 2004, ISBN: 978-0-7645-5587-9) and Professional JavaScript for Web Developers (Wrox, 2005, ISBN: 978 - 0 -7645-7908-0). Professional Ajax 2nd edition adds almost 200 new pages and expanded coverage compared to the first edition. Maps API Ajax Debugging with Firebug and Microsoft Fiddler ASP.NET AJAX Extensions (formerly code-named "Atlas") And of course the Second Edition maintains and updates the core first edition content including: the range of request brokers (including the hidden frame technique, iframes, and XMLHTTP) and explains when one should be used over another different Ajax techniques and patterns for executing client-server communication Ajax patterns including predictive fetch preloading, pages, submission throttling, incremental field and form validation, periodic refresh, multi-stage download and more Syndication with RSS, Atom, and JSON and create a textbox XParser autosuggest example web site widgets for news ticker, weather information, Web search and site search Ajax Frameworks JSpan, DWR, and Ajax.NET Professional A Web-based RSS / Atom aggregator case study A case study AjaxMail The book is also available as part of a 4-book JavaScript and Ajax Wrox Box (ISBN: 0470227818). This 4-book set includes: Professional JavaScript for Web Developers (ISBN: 0764579088) Professional Ajax 2nd edition (ISBN: 0470109491) Professional Web 2.0 Programming (ISBN: 0470087889) Professional Rich Internet Applications: Ajax and Beyond (ISBN: 0470082801)