你现在应该对于Ajax的基本原则有了一个良好的了解，另外，你应该理解一些更高级的随Ajax方法而来的设计问题。创建一个成功的Ajax应用需要一系列的方法—从JavaScript UI设计到服务器端架构—但是你现在应该已经具备了需要使用到的Ajax核心知识。
There's good news if you're feeling daunted by the complexity of writing a large Ajax application using the techniques demonstrated here. Just as frameworks like Struts, Spring, and Hibernate have evolved to abstract Web application development away from the low-level details of the Servlet API and JDBC, so toolkits are appearing to ease Ajax development. Some of these focus solely on the client side, providing easy ways to add visual effects to your pages or streamlining the use of XMLHttpRequest. Others go further, providing means to automatically generate Ajax interfaces from server-side code. These frameworks do the heavy lifting for you, so that you can take a more high-level approach to Ajax development. I'll be looking at some of them in this series.
The Ajax community is fast moving, and there's a great deal of valuable information out there. Before reading the next installment in this series, I recommend that you consult the articles listed in the Resources section, especially if you're new to Ajax or client-side development. You should also take some time to study the example source code and think about ways to improve it.
In the next article in this series, I'll discuss the XMLHttpRequest API in more detail and suggest ways to create XML easily from your JavaBeans. I'll also show you alternatives to XML for Ajax data transfer, such as the JSON (JavaScript Object Notation) lightweight data-interchange format.
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