What properties does ajax have?

The attributes of ajax include readyState, response, responseText, responseXML, status, statusText, timeout, onreadystatechange, onerror, onabort, onprogress, ontimeout, withCredentials, upload and onuploadprogress, etc.

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

AJAX is a web development technology that uses multiple technologies, including HTML or XHTML, CSS, JavaScript, DOM, XML, XSLT, and most importantly, the XMLHttpRequest object. In AJAX, the XMLHttpRequest object is the core part. It has the following attributes:

1. readyState: This is a read-only attribute that represents the status of the request. It has five possible values: 0 means the request is not initialized, 1 means the request has a connection established, 2 means the request has been sent, 3 means the response is being received, and 4 means the request is complete and the response is ready.

2. response: This is a read-only attribute that contains the response data returned by the server. When the request is completed, the response data can be obtained by accessing this property.

3. responseText: This is a read-only property used to obtain the response text data returned by the server.

4. responseXML: This is a read-only attribute used to obtain the response XML data returned by the server.

5. status: This is a read-only attribute used to obtain the HTTP status code returned by the server. For example, 200 means success and 404 means resource not found.

6. statusText: This is a read-only property used to obtain the HTTP status text returned by the server.

7. timeout: This is a readable/writable attribute used to set the request timeout (in milliseconds). By default, the timeout is 0, which means there is no timeout limit.

8. onreadystatechange: This is an event handler that will be triggered when the state of the AJAX request changes. When the request completes, the status of the request can be determined by checking the readyState property, and the response data can be accessed.

9. onerror: This is an event handler that will be triggered when an error occurs in the AJAX request.

10. onabort: This is an event handler that will be triggered when the AJAX request is aborted.

11. onprogress: This is an event handler that will be triggered when the AJAX request is transmitting data.

12. ontimeout: This is an event handler that will be triggered when the AJAX request times out.

13. timeout: This is a readable/writable attribute used to set the request timeout (in milliseconds). By default, the timeout is 0, which means there is no timeout limit.

14. withCredentials: This is a readable/writable attribute used to set whether to send credential information (such as cookies, HTTP authentication, etc.) for cross-site access control (CORS) requests. By default, this property is false.

15. upload: This is a read-only attribute that represents an XMLHttpRequestUpload object, used to monitor the upload progress of HTTP requests. Upload progress information can be obtained by accessing this property.

16. onuploadprogress: This is an event handler that will be triggered when the upload progress of the AJAX request changes. Upload progress events can be monitored by accessing the upload attribute.

In addition to the above properties, there are some other commonly used AJAX-related properties and technologies, such as using JavaScript Promise and async/await. These properties and techniques can be used to simplify AJAX development, improve performance, and reduce code size.

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