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What does Ajax refer to? in view of this question, this article introduces the corresponding analysis and answer in detail, hoping to help more partners who want to solve this problem to find a more simple and feasible way.

AJAX, or "AsynchronousJavascriptAndXML": is a technique that does not cause page jumps, asynchronously requests to load content and rewrites partial page content.

It can also be simply understood as sending a request to the server through JS.

Synchronous processing:

That is, when we send a request to the server through a page, our entire page is inoperable until the end of the server response, and we have to refresh the entire page even if only a small part of the content of the entire page changes.

Asynchronous processing:

Send a request to the server through AJAX. When the server responds to the request normally, the response information will be sent directly to AJAX, and AJAX can do some operations according to the content of the server response. And the page can be partially modified without the need for a full page refresh.

Request object: XMLHttpRequest

The XMLHttpRequest object is used to encapsulate the request message, and all the request information we send to the server needs to be encapsulated in this object.

Get XMLHttpRequest object. There are differences between different browsers.

Methods of XMLHttpRequest object

Open (method,url,async): used to set the basic information of the request and receive three parameters.

Parameter 1: method

Receives a string indicating the method of the request: get or post

Parameter 2: url

The requested address, which receives a string

Parameter 3: Assync

Whether the request sent is asynchronous, receiving a Boolean value. ① true is an asynchronous request ② false is not an asynchronous request (synchronous request)

Send (string): used to send a request to the server and can receive a parameter

String parameter

This parameter is only needed when sending a post request. Used to set the request body

SetRequestHeader (header,value): used to set the request header

Parameter 1: header parameter

String type, the name of the request header to be set

Parameter 2: value parameter

String type, the value of the request header to set

The answer to the question about what Ajax specifically refers to is shared here. I hope the above content can be of some help to you. If you still have a lot of doubts to be solved, you can follow the industry information channel to learn more about it.

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