Jquery ajax 绑定multiselect多选下拉选项,同时异步执行返回值

 1         function load(mslt_employees,belongto,mark) {//传入$(#ID)
 2             var jsondata = JSON.stringify({ belongto: 1, username: username });
 3             var emp = null;
 4             jQuery.ajax({
 5                 type: ‘POST‘,
 6                 url: "../tools/employees_ajax.ashx?action=" + action + "",
 7                 dataType: "json",//返回JSON对象
 8                 data:jsondata,//上传JSON格式的参数
 9                 cache: false,
10                 async:false,//异步执行
11                 success: function (message) {
12                     mslt_employees.empty();//清空下拉标签
13                     if (message != "0" && message != "none") {
14                         var list = message;
15                         for (var i = 0; i < list.length; i++) {
16                             if (mark == 1) {
17                                 if (belongto != 1) {//设置默认选项
18                                     mslt_employees.append($("<option value=‘" + list[i].USERNAME + "‘ disabled = ‘disabled‘>" + list[i].USERNAME + "</option>"));
19                                 } else {
20                                     mslt_employees.append($("<option value=‘" + list[i].USERNAME + "‘>" + list[i].USERNAME + "</option>"));
21                                 }
22                             } else {
23                                 mslt_employees.append($("<option value=‘" + list[i].USERNAME + "‘>" + list[i].USERNAME + "</option>"));
24                             }
25                             if (i == 0) { emp = list[i].USERNAME; } else {
26                                 emp = emp + "," + list[i].USERNAME;
27                             }
28                         }
29                     }
30                     mslt_employees.multiselect(‘refresh‘);//刷新多选下拉标签
31                 }, error: function () { return null; }
32             });
33             return emp;//返回值
34         }

原文出处：http://www.cnblogs.com/OnlyDreams/p/4143515.html
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