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<html>3
<head>4
<meta charset="utf-8">5
<title>蜜蜂教程(mifengjc.com)</title>6
<script>7
function setColSpan() {8
var x = document.getElementById('myTable').rows[0].cells;9
x[0].colSpan = "2";10
x[1].colSpan = "6";11
}12
</script>13
</head>14
<body>15
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<table id="myTable" border="1">17
<tr>18
<td colspan="4">单元格 1</td>19
<td colspan="4">单元格 2</td>20
</tr>21
<tr>22
<td>单元格 3</td>23
<td>单元格 4</td>24
<td>单元格 5</td>25
<td>单元格 6</td>26
<td>单元格 7</td>27
<td>单元格 8</td>28
<td>单元格 9</td>29
<td>单元格 10</td>30
</tr>31
</table>32
<form>33
<input type="button" onclick="setColSpan()" value="修改合并列">34
</form>35
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</body>37
</html>