The Done method in Ajax in jquery

1 The Done method in Ajax can be used after version 1.5 of jquery. This method has a similar effect as success in Ajax. It must first be after the 1.5 version in jquery.
such as: <link rel= "stylesheet" type= "Text/css" href= "./common/easyui/themes/icon.css" >
<link rel= "stylesheet" type= "Text/css" href= "./common/easyui/themes/default/easyui.css" >

<script type= "Text/javascript" src= "./js/jquery-1.7.min.js" ></script><!--version 1.5--
<script type= "Text/javascript" src= "./common/easyui/jquery.easyui.min.js" ></script>


2 Ajax's done. Parameters can be written as a method. is a parameter that takes the function itself as done
such as: function Submitajax (url,func) {

Alert ("URL:" +url);
Jquery.ajax ({
Url:url,
Type: "Post",
DataType: "JSON",
Success:function (msg) {

}
}). Done (function (msg) {
Alert ("done by the Doing method");
Eval (func+ "(" +msg+ ")");//execute callback function. MSG is a parameter passed back in the background
});
}


3 then call it in JS. The URL is a path. Func is a callback function.
such as: Submitajax (Urlhelper ("Demoservice", "Getdemosbyquery", obj), "showmessage");


function ShowMessage (msg) {
Alert ("Here is the callback function:" +msg);
}
Here the MSG is passed back in the background parameters. by Resp.getwriter (). Print (flag), the value of the flag passed back. is a string.