Use of Ajax

Function: Local Refresh!

Asynchronous:

An asynchronous request can be initiated using the Http_request object provided by the client browser!

When the submission is generated, the background takes the Http_request object and initiates a request for a new thread. Does not lock the window,

After the server responds, give the corresponding result to the Http_request Object!

Ajax runs in the client's browser! The language used is javascript!.

Browser-provided Http_request Object! Each browser provides http_request objects are different!

Synchronous:

The previous request mode is synchronous, after the submission is generated, the browser will lock the current window, waiting for the server to respond,

Return the corresponding results to the page! All pages refreshed!

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Use of Ajax