Use Jquery to implement a multi-level drop-down box Interaction

At first, we prepared to use. NET only for AJAX implementation and found that the desired effect could not be achieved. Later, AJAX in JQuery was implemented by asynchronously calling the web Service written in C.

The load () method is the simplest AJAX method in JQuery. It is used to obtain the response from the target server and display the result to the page. The load method is Jquery's AJAX packaging. You can also use $. post () and $. get () to call AJAX in post or get mode. You can also use the AJAX () method in complex cases.