"You can use it to create an <iframe> of sorts that simply loads pre-built HTML files into a div, but that's not all that exciting. If you use something like PH

"You can use it to create an <iframe> of sorts that simply loads pre-built HTML files into a div, but that's not all that exciting. If you use something like PHP to process and load data, you can start to make some very cool applications." The prototypical example for use of AJAX is to submit a HTML form without ever leaving the page (or at least, do something equivalent), for example the vote buttons on forums like, well, this one here.