想象一下你是一个网络开发者（如果你是一个很有可能不是一个伸展的网站开发者…

代码说明：

Imagine that you are a web developer (which is probably not a stretch if you are reading this book) and you are being encouraged to add some Ajax features to a site you’re working on. Maybe the originator of this request is your boss or your boss’s boss, who is not even sure what Ajax is, let alone what kinds of features might be useful.And maybe you’re not sure yourself. Imagine that your prior experience has mostly been on the server-side, developing in Java or some other server-side technology, and your experience with HTML and JavaScript has been fairly limited.This is the scenario we will explore over the next several chapters as you are introduced to the Dojo Toolkit.