如何用javascript取表格中第几行第几列的值？

Question

为td标签设置id，比如<td id="abc">abc</td>
alert(document.all.abc.innerText);

Answer 1

<table width="100%" border="0" cellspacing="0" cellpadding="0" id="oTb">
  <tr>
    <td height="114">1</td>
    <td>2</td>
    <td>3</td>
    <td>4</td>
  </tr>
  <tr>
    <td height="92">5</td>
    <td>6</td>
    <td>7</td>
    <td>8</td>
  </tr>
  <tr>
    <td height="108">9</td>
    <td>10</td>
    <td>11</td>
    <td>12</td>
  </tr>
  <tr>
    <td height="179">13</td>
    <td>14</td>
    <td>15</td>
    <td>16</td>
  </tr>
</table>
<script language="JavaScript">
alert(document.all.oTb.rows(1).cells(2).innerText)
</script>