<p><b>注意：</b>目前IE不支持 dialog 标签。</p> <table border="1"> <tr> <th>January <dialog open>This is an open dialog window</dialog></th> <th>February</th> <th>March</th> </tr> <tr> <td>31</td> <td>28</td> <td>31</td> </tr> </table>

?????提示：可以修改代码后运行