jquery ashx交互 返回list 循环json输入信息

html代码：触发按钮

<input type="button" id="search" value="查询" />

 ashx代码：获取全部信息

 List<bll> list = new List<bll>();
                    DataSet ds = bll.getSearchAll();
                    if (ds.Tables[0].Rows.Count > 0)
                    {
                        foreach (DataRow dr in ds.Tables[0].Rows)
                        {
                            bl = new bll();
                            bl.id= int.Parse(dr["id"].ToString());
                            bl.name= dr["name"].ToString();
                            bl.sex= dr["sex"].ToString();
                            bl.deviceName = dr["deviceName"].ToString();
                            bl.age= int.Parse(dr["deviceName"].ToString());
                            bl.notes= dr["notes"].ToString();
                            list.Add(bl);
                        }
                        JavaScriptSerializer jss = new JavaScriptSerializer();
                        string jsonArr = jss.Serialize(list);
                        context.Response.Write(jsonArr);
                    }
                    else
                    {
                        HttpContext.Current.Response.Write("noresult");
                    }

 js代码：按钮click事件去后台获取返回的json，并显示在页面

 $("#search").click(function () {
        window.location.href = "#searchall";
        $.ajax({
            type: "post",
            url: "Handler1.ashx",
            data: "type=search",
            dataType: "JSON",
            success: function (data) {
                var m = "";
                for (var i = 0; i < data.length; i++) {
          m += data[i].id + "<br/>";
                    m += data[i].name + "<br/>";
                    m += data[i].sex + "<br/>";
                    m += data[i].age + "<br/>";
                    m += data[i].notes + "<br/>";
                }
                alert(m);
              },
            error: function (data) {
                if (data.toString() == "noresult") {
                    alert("无结果");
                }
            }
        });
    });