I think that by now, there are probably very few people who have never heard of AJAX. Even people who have not paid attention to web development can feel the potential of the new technology. You must have been tired of reading those introductory articles about AJAX, introducing how amazing AJAX is, and taking GOOGLE SUGGEST, GMAIL, etc. Waiting for technology to illustrate the future of AJAX, so I will not repeat the development history of AJAX, etc., but directly talk about how to apply it in the real world.

So what is the difference between the article I am talking about here and others? Whether it is or not, what I am talking about here is not to use AJAX to create some fancy small programs, but to talk about how to use AJAX to design and develop a complete website. In order to increase the readability of the article and avoid using some low-level code with poor readability, I decided to use the development tool toolkit of dojo. I also planned to use prototype's js library, because it is well written and easy to use, but dojo provides us with more encapsulated functions. No matter which framework, there is a common flaw: the lack of detailed documentation, we need to spend a lot of time debugging or reading some articles that interpret its code to help understand.

For debugging, I recommend using the firefox browser's built-in debugging tool. It is really a good debugging tool. It can make AJAX easier to understand, especially it The debug log records each AJAX request information.

In this article, we will use AJAX to design some components as the entrance to our communication. Of course, we must also design a set of basic development tools to help us develop more complex programs.