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AJAX Introduction
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What You Should Already Know
Before you continue you should have a basic understanding of the following:
• HTML / XHTML
• JavaScript
AJAX = Asynchronous JavaScript and XML
AJAX is not a new programming language, but a technique for creating better, faster, and more interactive web applications.
With AJAX, your JavaScript can communicate directly with the server, using the JavaScript XMLHttpRequest object. With this object, your JavaScript can trade data with a web server, without reloading the page.
AJAX uses asynchronous data transfer (HTTP requests) between the browser and the web server, allowing web pages to request small bits of information from the server instead of whole pages.
The AJAX technique makes Internet applications smaller, faster and more user-friendly.
AJAX is a browser technology independent of web server software.

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