xxxxxxxxxx<html><head> <meta charset="utf-8"> <title>W3Cschool教程(w3cschool.cn)</title> </head><body><p><b>注意:</b> HTML5 不支持 rules 属性。可以使用 CSS 代替。</p><p>位于行之间的线条:</p><table rules="rows"> <tr> <th>Month</th> <th>Savings</th> </tr> <tr> <td>January</td> <td>$100</td> </tr></table><p>位于列之间的线条:</p><table rules="cols"> <tr> <th>Month</th> <th>Savings</th> </tr> <tr> <td>January</td> <td>$100</td> </tr></table><p>位于行和列之间的线条:</p><table rules="all"> <tr> <th>Month</th> <th>Savings</th> </tr> <tr> <td>January</td> <td>$100</td> </tr></table></body></html>