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Native JS sends Ajax requests

Source: Internet
Author: User
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Attention, the focus of the problem, the test is not to calculate I lose!

First, JS native Ajax

ajax= asynchronous Javascript+xml;

Ajax is a way of requesting data without having to refresh the entire page. This means that you can update a part of a webpage without reloading the entire page.

The core technology of Ajax is of course XMLHttpRequest object;

Ajax Request Process: Create a XMLHttpRequest object, connect to the server, send a request, accept the data.

Talk less about the code!

Native JS sends Ajax requests

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