W3School TIY Editor
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<html> <head> <script type="text/javascript"> function rowRules() { document.getElementById('myTable').rules="rows" } function colRules() { document.getElementById('myTable').rules="cols" } </script> </head> <body> <table id="myTable" border="1"> <tr> <td>Row1 cell1</td> <td>Row1 cell2</td> </tr> <tr> <td>Row2 cell1</td> <td>Row2 cell2</td> </tr> <tr> <td>Row3 cell1</td> <td>Row3 cell2</td> </tr> </table> <br /> <input type="button" onclick="rowRules()" value="仅显示行边框"> <input type="button" onclick="colRules()" value="仅显示列边框"> </body> </html>