Ajax请求

   //产生随机数
        function GetRandomNum(Min, Max) {
            var Range = Max - Min;
            var Rand = Math.random();
            return (Min + Math.round(Rand * Range));
        } 
  //获取文件列表  显示
        $(function () {
            var tempValue = GetRandomNum(1, 1000);
            var Id = $("#txtId").val();
            if (Id != "") {
                var queryString = "FlowFlag=3&Id=" + Id
                $.ajax({
                    type: "get",
                    async: false,
                    url: "../Handler/getFileName.ashx?" + tempValue,
                    data: queryString,
                    dataType: "html",
                    timeout: 30000,
                    success: function (json) {
                        $("#FileList").html(json);
                    },
                    error: function () {
                    }
                });
            }
            var tempValue2 = GetRandomNum(2, 2000);
            var FId = $("#txtFId").val();
            if (FId != "") {
                var query = "FlowFlag=3&Id=" + FId
                $.ajax({
                    type: "get",
                    async: false,
                    url: "../Handler/getFileName.ashx?" + tempValue2,
                    data: query,
                    dataType: "html",
                    timeout: 30000,
                    success: function (json) {
                        $("#FileList").html(json);
                    },
                    error: function () {
                    }
                });
            }
        })