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