HTML表格跨行跨列操作(rowspan、colspan)

<table border="1">
  <tr>
    <th>星期一</th>
    <th>星期二</th>
  </tr>
  <tr>
    <td colspan="2">星期天</td>
  </tr>
</table>

<table border="1">
  <tr>
    <td rowspan="2">星期一</td>
    <td>星期二</td>
  </tr>
  <tr>
    <td>星期三</td>
  </tr>
</table>

<table border="1">
  <tr>
    <th colspan="3">物资详情说明</th>
  </tr>
  <tr>
    <td colspan="2" align="center">数量(支)</td>
    <td rowspan="2">重量(吨)</td>
  </tr>
  <tr>
    <td>实发数</td>    
    <td>实收数</td>
  </tr>
  <tr>
    <td>12</td>    
    <td>10</td>
    <td>100.00</td>
  </tr>
</table>