What is ajax?

1, AJAX is "Asynchronous Javascript And XML" (asynchronous JavaScript and XML).

2, is a synthesis of seven languages, it contains seven languages. (javascript xml xstl shtml dom xmlhtprwquest css) so ajax is an adhesive

3, is a service-side language-independent technology that can be used on any dynamic website

4, the main use is: no refresh data interaction is to use Javascript to request to the server and process the response without blocking the user! C ore object XMLHTTPRequest. With this object, your JavaScript can exchange data with the Web server without overloading the page, i.e. it can produce a partial refresh without having to refresh the page.

Also: flash java applet iframe ajax

illustrate

Normal data interaction

Use with ajax interaction

The advantage is that when you use it, you can

No refreshed data interaction means using Javascript to make a request to the server and process the response without blocking the user! C ore object XMLHTTPRequest. With this object, your JavaScript can exchange data with the Web server without overloading the page, i.e. it can produce a partial refresh without having to refresh the page.