"JavaScript" Ajax Tutorials

AJAX = Asynchronous JavaScript and XML (asynchronous JavaScript and XML).

Ajax is the technique of exchanging data with a server and updating parts of a Web page without reloading the entire page.

Ajax enables Web pages to be updated asynchronously by exchanging small amounts of data in the background with the server. This means that you can update a part of a webpage without reloading the entire page.

How Ajax Works

XMLHttpRequest is the basis of Ajax.

XMLHttpRequest Object

IE5/IE6--->activexobject

XMLHttpRequest is used to exchange data with the server in the background. This means that you can update a part of a webpage without reloading the entire page.

Create a XMLHttpRequest Object

var xmlhttp = new XMLHttpRequest ();

var xmlhttp = new Activitexobject ("Microsoft.XMLHTTP");

The XMLHttpRequest object is used to exchange data with the server.