Shorthand for asynchronous JavaScript and XML there is nothing new here JavaScript and xml are indene ant of each other but put the two language together and you have a new age use of software, you might say what is the point of having xml with JavaScript they are both will suited for the world wide web. The idea behind this different way of programming is that to enhance user experience but there are some drawbacks to AJAX
1.Ajax interfaces are substantially harder to develop properly than static pages.
2.Pages dynamically created using successive Ajax requests do not automatically register themselves with the browser's history engine more example can be found @
"Why use Ajax?". InterAKT. 2005-11-10. http://www.interaktonline.com