IE only!

</p> <p><script></p> <p>edStatus=0;</p> <p></script></p> <div id="oContent"> <table width="200" border="1"> <tr> <td>11</td> <td>22</td> </tr> <tr> <td>33</td> <td>44</td> </tr> </table> <table width="200" border="1"> <tr> <td contenteditable="true"><span contenteditable="true">11</span></td> <td contenteditable="true">22</td> </tr> <tr> <td>33</td> <td>44</td> </tr> </table> </div> <p><button onclick="if(edStatus==0){document.all.oContent.contentEditable=true;this.innerText='退出可编辑状态';edStatus=1;}else{document.all.oContent.contentEditable=false;this.innerText='进入可编辑状态';edStatus=0;}">进入可编辑状态</button></p> <p> [Ctrl+A 全部选择 提示：你可先修改部分代码，再按运行]