免费AJAX指南
AJAX Tutorial
AJAX is a web development technique for creating interactive web applications. If you know JavaScript, HTML, CSS, and XML, then you need to spend just one hour to start with AJAX.
This tutorial will be useful for web developers who want to learn how to create interactive webpages as well as improve their speed and usability using AJAX.
It is highly recommended that you are familiar with HTML and JavaScript before attempting this tutorial.