请问一个js有关问题，求详解。多谢了！

<table id="tb_gvshow">
        <asp:Repeater ID="gvshow" runat="server">
            <HeaderTemplate>
                <tr>
                    <td>
                        编号
                    </td>
                    <td>
                        航空公司
                    </td>
                    <td>
                        出发城市
                    </td>
                    <td>
                        到达城市
                    </td>
                    <td>
                        起飞日期
                    </td>
                    <td>
                        航班号
                    </td>
                    <td>
                        舱位
                    </td>
                    <td>
                        价格
                    </td>
                    <td>
                        信天游价格