Ajax Technology
Ajax technology introduction:
Ajax (asynchronous JavaScript and XML) technology is being increasingly popular in website design. Using ajax technology you can submit form data to the server without refreshing the document. Suppose you are filling an online registration form. You write your user name, email address, address etc. and submit that form. At the server end server detects that the user name has already been taken by another user. So it will generate an error message and request
