<html> <head> <script type="text/javascript"> function setColSpan() { var x=document.getElementById('myTable').rows[0].cells x[0].colSpan="2" x[1].colSpan="6" } </script> </head> <body> <table id="myTable" border="1"> <tr> <td colspan="4">单元格1</td> <td colspan="4">单元格2</td> </tr> <tr> <td>单元格3</td> <td>单元格4</td> <td>单元格5</td> <td>单元格6</td> <td>单元格7</td> <td>单元格8</td> <td>单元格9</td> <td>单元格10</td> </tr> </table> <form> <input type="button" onclick="setColSpan()" value="改变colspan值"> </form> </body> </html>
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