Ajax and Usage of Ajax

* AJAX stands for Asynchronous JavaScript and XML. AJAX is a new technique for creating better, faster, and more interactive web applications with the help of XML, HTML, CSS and Java Script.

*Ajax uses XHTML for content and CSS for presentation, as well as the Document Object Model and JavaScript for dynamic content display.

*Conventional web application trasmit information to and from the sever using synchronous requests. This means you fill out a form, hit submit, and get directed to a new page with new information from the server.

* With AJAX when submit is pressed, JavaScript will make a request to the server, interpret the results and update the current screen. In the purest sense, the user would never know that anything was even transmitted to the server.

*XML is commonly used as the format for receiving server data, although any format, including plain text, can be used.

* AJAX is a web browser technology independent of web server software.

* A user can continue to use the application while the client program requests information from the server in the background
* Intuitive and natural user interaction. No clicking required only Mouse movement is a sufficient event trigger.
*Data-driven as opposed to page-driven