Ajax writing User Registration examples and technical summary (3)

Ajax| User Registration

Ajax Technology Summary

1. ajax (asynchronous javascript and xml) is a combination of Java technology, XML, and JavaScript programming techniques that allow you to build Web applications based on Java technology and break the practice of using page overloading. &NBSP

2. ajax, asynchronous JavaScript and XML, is a Web application development method that uses client script to exchange data with a Web server. This way, Web pages can be updated dynamically without interrupting the interactive process. With Ajax, you can create a direct, highly available, richer, more dynamic Web user interface that is close to local desktop applications.

3.  for browsers such as Mozilla﹑netscape﹑safari, Firefox, and so on, the xmlhttprequest  method is created as follows:

xmlhttp_request  = new xmlhttprequest (); The xmlhttprequest  methods such as

4. ie are created as follows:

Xmlhttp = new activexobject (" Msxml2.xmlhttp ") or Xmlhttp = new activexobject (" Microsoft.XMLHTTP ");

5. xmlhttp_request.open (' Get ',  url, true);  xmlhttp_request.send (null);
The first parameter of the
6. open () is the method of HTTP request-get,post or the way that any server supports that you want to invoke.   In accordance with the HTTP specification, this argument is capitalized; otherwise, some browsers, such as Firefox, may not be able to process the request. The second parameter is the URL of the request page. The third parameter sets whether the request is asynchronous mode. If the True,javascript function continues to execute without waiting for the server to respond. This is "A" in "AJAX".

The good use of Ajax technology adds a lot of friendly effects to our web pages, giving users a better feeling. Ajax is a good thing.

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