Tuesday, October 26, 2010

Introduction to AJAX

·         Hmm... very interesting topic now i.e. AJAX.

·         First of all, what is AJAX????

·         AJAX = Asynchronous JavaScript and XML.

·         AJAX is a technique for creating fast and dynamic web pages.

·         It is a group of interrelated web development techniques used on the client-side to create interactive web applications.

·         With Ajax, web applications can retrieve data from the server asynchronously in the background without interfering with the display and behavior of the existing pageAJAX allows web pages to be updated asynchronously by exchanging small amounts of data with the server behind the scenes. This means that it is possible to update parts of a web page, without reloading the whole page.

·         Data is usually retrieved using the XMLHttpRequest object.

·         Like DHTML and LAMP, Ajax is not a technology in itself, but a group of technologies.

·         Classic web pages, (which do not use AJAX) must reload the entire page if the content should change.

·         Examples of applications using AJAX: Google Maps, Gmail, Youtube, and Facebook tabs.