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AJAX stands for Asynchronous JavaScript And XML.
AJAX ÊÇ “Òì²½Javascript ºÍ XML” ¡£


What You Should Already Know
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Before you continue you should have a basic understanding of the following:
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  • HTML / XHTML
  • JavaScript

If you want to study these subjects first, find the tutorials on our Home page.
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AJAX = Asynchronous JavaScript and XML
AJAX = Òì²½JavaScript ºÍ XML

AJAX is not a new programming language, but a technique for creating better, faster, and more interactive web applications.
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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.
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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.
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The AJAX technique makes Internet applications smaller, faster and more user-friendly.
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lamp.gif AJAX is a browser technology independent of web server software.
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AJAX is Based on Web Standards
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AJAX is based on the following web standards:
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  • JavaScript
  • XML
  • HTML
  • CSS

The web standards used in AJAX are well defined, and supported by all major browsers. AJAX applications are browser and platform independent.
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AJAX is About Better Internet Applications
AJAX ÊÇ¿ÉÒԷḻ»¥ÁªÍøÓ¦ÓóÌÐòµÄ¹¦ÄÜ

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.
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However, Internet applications are not always as "rich" and user-friendly as traditional desktop applications.
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With AJAX, Internet applications can be made richer and more user-friendly.
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You Can Start Using AJAX Today
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There is nothing new to learn.
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AJAX is based on existing standards. These standards have been used by most developers for several years.
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