Web2.0 is a wide term and usually referred to web applications that run without any visible page refreshes. A normal website generally functions via delivering several pages of information and links to facilitate users to move from one page to the other.

A Web2.0 application is also known as an AJAX application. It runs on a single web page and utilizes clientside JavaScript to start off and process additional requests sent to the server to complete.

Ajax is an acronym for Asynchronous JavaScript and XML. The most interesting thing about AJAX is that XML is optional. The key to use AJAX Web2.0 application is in XMLHTTP object. The XMLHTTP exists in several forms both clientside and serverside.

When creating Web2.0 applications, AJAX can be considered as the best implementation. Here is an ideal cross browser JavaScript code for starting the XMLHTTP object.

Whenever you create a Web2.0 application, the basic idea is to use the XMLHTTP object to send the request in the background. This type of web application was not possible in the past. This was because the concept of XMLHTTP object was not available.

Using XMLHTTP and AJAX can help creating the best of Web2.0 application.

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