What are the parameters of ajax

The parameters of ajax include url, type, async, timeout, cache, username, password, responseType, headers, data, success, error, beforeSend and complete, etc. Detailed introduction: 1. url, this is the target URL of the AJAX request, which is a string indicating the target address of the request; 2. type, this parameter specifies the type of AJAX request, etc.

The operating system for this tutorial: Windows 10 system, DELL G3 computer.

Ajax is a web development technology that uses several technologies, including HTML or XHTML, CSS, JavaScript, DOM, XML, XSLT, and most importantly, the XMLHttpRequest object. AJAX is not a single technology, but a combination of multiple technologies.

When using AJAX to make an asynchronous HTTP request, you can set some parameters to control the behavior of the request. These parameters may vary depending on the specific technology used and needs, but here are some common AJAX request parameters:

1. url: This is the target URL of the AJAX request. This is a string representing the target address of the request.

2. type: This parameter specifies the type of AJAX request. Common ones include GET, POST, etc. GET requests are suitable for getting data from the server, while POST requests are suitable for sending data to the server.

3. async: This parameter is a Boolean value used to specify whether the AJAX request should be processed asynchronously. If set to true, the request will be handled asynchronously, meaning it will not block the user interface and the user can continue to interact with the application in the meantime.

4. timeout: This parameter specifies the timeout of the AJAX request (in milliseconds). If set to a smaller value, the error callback function will be triggered if the request does not receive a response within the specified time.

5. cache: This parameter is a Boolean value used to specify whether the browser is allowed to cache AJAX responses. If set to false, each request will return the latest data instead of reading from cache.

6, username and password: These parameters are used to provide authentication information, such as username and password. This information will be used to send requests on servers that require authentication.

7. responseType: This parameter specifies the type of response data returned by the server. Common response types include json, xml, html, etc.

8. Headers: This parameter is an object used to set custom values ​​for HTTP request headers. For example, you can set header information such as Content-Type and Authorization.

9. data: This parameter contains the data to be sent to the server. This can be a JSON object, a form data object, or other data format.

10, success and error: These two parameters are callback functions, which are called when the request succeeds and fails respectively. You can use them to handle response data or error messages returned by the server.

11. beforeSend: This parameter is a function that is called before the request is sent. You can use it to perform some preprocessing operations before sending the request, such as setting request headers, canceling the request, etc.

12. Complete: This parameter is a function that is called when the request is completed, whether the request succeeds or fails. You can use it to do some cleanup or perform other actions, such as turning off the loading indicator, etc.

The above are some common AJAX request parameters, but the specific parameters depend on the specific technology and needs you use. When using AJAX, you need to choose the appropriate parameters and configuration based on the needs of your application.

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