Ajax - asynchronous JavaScript and XML

Or, what it should be called:

Usjatogsapiotpawirtwhop - Using Javascript to Get Stuff and Put it on the Page Without Reloading the Whole Page!

Which is basically what it does.... (you don't acutally need to use any XML at all!)

Tutorials

javascript confirm dialogueIntroductionThe simplest example of AJAX
javascript confirm dialogueChecking a form fieldChecking what a use enters in a form input box, and gives them feedback as they type.

Code Samples

Sample 1 - Load info using dropdown and PHP

Sample 2 - Load different HTML pages in

Sample 3 - Simple AJAX Shopping Cart