try_dom_tablecell_colspan 在线代码实例

 <table id="myTable" border="1">
<tbody><tr>
<td colspan="4">cell 1</td>
<td colspan="4">cell 2</td>
</tr>
<tr>
<td>cell 3</td>
<td>cell 4</td>
<td>cell 5</td>
<td>cell 6</td>
<td>cell 7</td>
<td>cell 8</td>
<td>cell 9</td>
<td>cell 10</td>
</tr>
</tbody></table>
<form>
<input type="button" onclick="setColSpan()" value="Change colspan">
</form>