How does Ajax work?
The full name of AJAX is Asynchronous JavaScript and XML, which refers to asynchronous JavaScript and XML. It is a technology used to achieve asynchronous data interaction on webpages.
The working principle of AJAX is as follows:
- The browser sends asynchronous requests to the server using JavaScript, rather than traditional synchronous requests.
- After receiving the request, the server processes it and returns data. Typically, the server returns data in the form of XML, JSON, or plain text, instead of a complete web page.
- After receiving data from the server, the browser parses and handles it using JavaScript.
- Based on the processing results, the browser can update the partial content of the page without needing to refresh the entire page.
The key to AJAX is using asynchronous requests, which allows the browser to continue with other operations after sending a request without waiting for the server to return data. This can enhance user experience and make web pages more dynamic and responsive.
Please note that despite the presence of “XML” in AJAX’s name, it is not necessary to use XML. Nowadays, JSON has become a more commonly used data format because it is more concise and easier to handle.
