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The magical Ajax of Java_Web, java_webajax

Source: Internet
Author: User
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The magical Ajax of Java_Web, java_webajax

Why Ajax?

Refreshing: the benefits of refreshing the entire page without refreshing the entire page are similar to those of C/S. In addition, the operation only updates some pages. What Is Ajax when bandwidth is used effectively? How does XMLHttpRequest work? The JavaScript Object XMLHttpRequest is the core of Ajax technology. It provides the ability to send requests asynchronously. What are the common attributes of XMLHttpRequest? Onreadystatechange: Specifies the status information of the callback function readystate: XMLHttpRequest.

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