Ajax First Contact

AJAX: Asynchronous JavaScript and XML, asynchronous JavaScript and XML.

　　Advantage 1. Ajax uses the JS language to interact with the server asynchronously . That is, when JS sends a request to the server, it does not have to wait for the server to respond and can continue to send the request more than once, while synchronous interaction requires waiting until the server responds to the end to send a second request.

　　Advantage 2. The most important feature of Ajax is the local refresh of the browser page. Before, whenever a user sends a request to the server, even if only a simple update is needed, the server refreshes the page as a whole and regenerates the code, which aggravates the server-side stress and program performance. Ajax technology can be refreshed locally without having to refresh the entire browser page.

Ajax First Contact