Real time web update client to client

Question

I'm so curious real time web application like Facebook uses (eg. Friends Notifications) My question is what particular javascript code or existing framework I can use if theres any existing out there. Regards

Answer 1

Also have a look at websockets.

A description: http://www.html5rocks.com/en/tutorials/websockets/basics/

And a framework to use: http://socket.io/