bootstrap下拉框动态赋值方法

 <script type="text/javascript"> /**   */   window.onload = function () {   showsmsselect();   }  function showsmsselect() {    $.ajax({     url : "${pageContext.request.contextPath}/user/finduserRealName.do", //所需要的列表接口地址     type : "get",     dataType : "json",     success : function(result) {       var h = "";       $.each(result, function(key, value) {       h += "<option value='" + value.id + "'>" + value.realname //下拉框序言的循环数据       + "</option>";       });       $("#addrole").append(h);//append 添加进去并展示       $("#addrole").on(         "change",         function(a, b, c) {          $("#contentID").val(            $("#addrole option:selected").val());         $("#contentName").val(            $("#addrole option:selected").text());        })     }    });   }  </script>