怎么在表格中写入变量的值

如何在表格中写入变量的值啊
<table border="0" cellpadding="0" cellspacing="0" height="69" width="100%">
                                                                                                <tbody><tr>
                                                                                                        <td class="Hfont"><em><span class="green2" >8.70</span></em></td>
                                                                                                </tr>
                                                                                                <tr>
                                                                                                        <td class="f14 Hsma"><span class="green2" >-0.03&nbsp;&nbsp;&nbsp;-0.34%</span></td>
                                                                                                </tr>
                                                                                        </tbody></table>