Friday, July 18, 2008

Ajax : Some Facts

Ajax (asynchronous JavaScript and XML), or AJAX, is a group of interrelated web development techniques used for creating interactive web applications or rich Internet 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 page. Data is retrieved using the XMLHttpRequest object or through the use of Remote Scripting in browsers that do not support it. Despite the name, the use of JavaScript, XML, and asynchrony is not required.

AJAX is a type of programming made popular in 2005 by Google (with Google Suggest). With Google Suggest As you type, Google will offer suggestions with the Help of Ajax Technology.

Main role for JavaScript XMLHttpRequest object. By using the XMLHttpRequest object, a web developer can update a page with data from the server after the page has loaded

Google Suggest is using the XMLHttpRequest object to create a very dynamic web interface: When you start typing in Google's search box, a JavaScript sends the letters off to a server and the server returns a list of suggestions.


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