How to use AJAX to add quick reply in WEBCHAT discussion

I'm developing a webchat using PHP and i want to use AJAX to post discu开发者_JS百科ssion replys.

How can i do that...?

If you want realtime chat with support to browsers that don't support Web-Sockets then try Comet-Programming with Ajax Long-Pulling. I am a PHP-Guy so can recommend you a PHP-Comet-Server link http://sourceforge.net/projects/comet/

Hope this helps.

First get it working without ajax / the normal way and as soon as all functionalities are there, you can add ajax where it streamlines the visitor's process.