AJAX只是JavaScript.因此，您必须执行以下两项操作之一:

1-学习足够的JavaScript以学习如何使用AJAX
2-下载ASP.NET AJAX库并使用Microsoft提供的控件

大多数人都很懒惰，使用#2.很少有人如此懒惰，以至于他们不必理会网站，阅读文档等.它们非常易于使用.

AJAX is just javascript. So, you have to do one of two things:

1 - learn enough javascript to learn how to use AJAX
2 - download the ASP.NET AJAX library and use the controls that Microsoft provides

Most people are lazy and use #2. Few are so lazy that they don''t bother to look at the site, read the documentation, etc. They are very easy to use.