源代码 ：
点击运行
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>开源教程(ossoft.cn)</title> <script> function aboveFrames(){ document.getElementById('myTable').frame="above"; } function belowFrames(){ document.getElementById('myTable').frame="below"; } </script> </head> <body> <table id="myTable"> <tr> <td>100</td> <td>200</td> </tr> <tr> <td>300</td> <td>400</td> </tr> </table> <br> <input type="button" onclick="aboveFrames()" value="显示上frames"> <input type="button" onclick="belowFrames()" value="显示下frames"> </body> </html>
运行结果