jquery异步加载数据，jquery对table的简单操作

<table id="datas" border="1" cellspacing="0" style="border-collapse: collapse">
                <tr>
                    <th>
                        订单ID</th>
                    <th>
                        客户ID</th>
                    <th>
                        雇员ID</th>
                    <th>
                        订购日期</th>
                    <th>
                        发货日期</th>
                    <th>
                        货主名称</th>
                    <th>
                        货主地址</th>
                    <th>
                        货主城市</th>
                    <th>
                        更多信息</th>
                </tr>
                <tr id="template">
                    <td id="OrderID">
                    </td>
                    <td id="CustomerID">
                    </td>
                    <td id="EmployeeID">
                    </td>
                    <td id="OrderDate">
                    </td>
                    <td id="ShippedDate">
                    </td>
                    <td id="ShippedName">
                    </td>
                    <td id="ShippedAddress">
                    </td>
                    <td id="ShippedCity">
                    </td>
                    <td id="more">
                    </td>

                </tr>

 </table>

  $.ajax({
            type: "get",//使用get方法访问后台
            dataType: "json",//返回json格式的数据
            url: "BackHandler.ashx",//要访问的后台地址
           data: "pageIndex=" + pageIndex,//要发送的数据
            complete :function(){$("#load").hide();},//AJAX请求完成时隐藏loading提示
            success: function(msg){//msg为返回的数据，在这里做数据绑定
                var data = msg.table;
                $.each(data, function(i, n){
                    var row = $("#template").clone();
                    row.find("#OrderID").text(n.订单ID);
                    row.find("#CustomerID").text(n.客户ID);
                    row.find("#EmployeeID").text(n.雇员ID);
                    row.find("#OrderDate").text(ChangeDate(n.订购日期));
                    if(n.发货日期!== undefined) row.find("#ShippedDate").text(ChangeDate(n.发货日期));
                    row.find("#ShippedName").text(n.货主名称);
                    row.find("#ShippedAddress").text(n.货主地址);
                    row.find("#ShippedCity").text(n.货主城市);
                    row.find("#more").html("<a href=OrderInfo.aspx?id=" + n.订单ID + "&pageindex="+pageIndex+">&nbsp;More</a>");                    
                    row.attr("id","ready");//改变绑定好数据的行的id
                    row.appendTo("#datas");//添加到模板的容器中
                });