3.5. Ajax Patterns Demos
The Ajax Patterns Demos appear in many patterns as Refactoring Illustrations and also in the Solution section. They're all online at http://ajaxify.com/run/, and it would be worth trying them out. In addition, the full code base can be downloaded from that location; its installation is explained in the Appendix B. It includes the demos as well as completed code for Chapter 2. Note the demos have been tested on Firefox 1.5 and IE6, though most of them work on comparable browsers as well.
The server-side code is all PHP, but most of it is fairly trivial, so it should be fairly easy for all programmers to comprehend. PHP was chosen as it's quite easy for anyone to set up, on any platform. Also, the language itself is fairly "generic" in that anyone with web development experience should have no difficulty following the code.
The demos are organized around a refactoring theme. For most of the examples, there is an initial, "embryonic," Ajaxian application. Then, several parallel refactorings are applied to the same demo, each in a separate subdirectory. And each of these refactorings may have a further refactoring applied, contained in a deeper subdirectory. A tree structure emerges on the site, with each application having evolved in different ways.
For example, look at the evolution of Finite Cache Sum Demo (http://www.ajaxify.com/run/sum/xml/cached/expiry/), which has the path /sum/xml/cached/expiry/.