How does in-browser chat work?

Question

Just curious. How exactly does chatting in a browser work? Usually if a user goes to a web page, his/her webbrowser requests the page content. A server produces output and s

Answer 1

I've develop a browser chat similar to facebook chat technology ( http://chatsign.com ). It is not a push technology but something better than polling, its call ajax long polling.

For more information about ajax long polling you can do some research or visit : http://techoctave.com/c7/posts/60-simple-long-polling-example-with-javascript-and-jquery