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<p>From <b>http://www.w3schools.com</b> (Copyright Refsnes Data)</p>
<h1>AJAX Introduction</h1>
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<p class="intro">AJAX stands for Asynchronous JavaScript And XML.</p>
<hr />
<h2>What You Should Already Know</h2>
<p>Before you continue you should have a basic understanding of the following:</p>
<ul>
<li>HTML / XHTML</li>
<li>JavaScript</li>
</ul>
<p>If you want to study these subjects first, find the tutorials on our
<a href="../default.asp">Home page</a>.</p>
<hr />
<h2>AJAX = Asynchronous JavaScript and XML</h2>
<p>AJAX is not a new programming language, but
a technique for creating better, faster, and more interactive web
applications.</p>
<p>With AJAX, your JavaScript can communicate directly with the server, using the
JavaScript <b>XMLHttpRequest</b> object. With this object, your JavaScript can
trade data with a web server, without reloading the page.</p>
<p>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.</p>
<p>The AJAX technique makes Internet applications smaller, faster and more user-friendly.</p>
<p><img border="0" src="../images/lamp.gif" width="15" height="15" alt="lamp" /> AJAX
is a browser technology independent of web server software. </p>
<hr />
<h2>AJAX is Based on Web Standards</h2>
<p>AJAX is based on the following web standards:</p>
<ul>
<li><b>JavaScript</b></li>
<li><b>XML</b></li>
<li><b>HTML</b></li>
<li><b>CSS</b></li>
</ul>
<p>The web standards used in AJAX are well defined, and supported by all major
browsers. AJAX applications are browser and platform independent.</p>
<hr />
<h2>AJAX is About Better Internet Applications</h2>
<p>Web applications have many benefits over desktop applications; they can reach
a larger audience, they are easier to install and support, and easier to
develop.</p>
<p>However, Internet applications are not always as "rich" and user-friendly as
traditional desktop applications. </p>
<p>With AJAX, Internet applications can be made richer and more user-friendly.</p>
<hr />
<h2>You Can Start Using AJAX Today</h2>
<p>There is nothing new to learn.</p>
<p>AJAX is based on existing standards. These standards have been used by most
developers for several years.</p>
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<p>From <b>http://www.w3schools.com</b> (Copyright Refsnes Data)</p>
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