Ajax Tutorials

 

Each of these describes an element of the Ajax jigsaw. Read them alongside the scripts section, and you'll soon see how it all fits together.

 

The XMLHTTPRequest object
Introducing the object that makes it all happen - the XMLHTTPRequest object. Learn how to instantiate the object irrespective of what browser you're using.

 

The Callback function
Dealing with the data returned by an Ajax call using the callback function.

 

Asking the User to Wait
For long server operations, it is sometimes worthwhile reminding the user that something is happening by displaying a graphic or message.

 

Beating the cache
Some browsers (IE in particular) have a nasty habit of dragging pages from their own cache rather than going back to the server for a fresh version - even when you've told them not to. Here's a way around the problem.