js实现的网页版的计算器（简单、方便）(2)

    <td><input type="button" value="  8   " onclick="getNum(8)"></td>
    <td><input type="button" value="  9   " onclick="getNum(9)"></td>
    <td><input type="button" value="  *   " onclick="getNum('*')"></td>
  </tr>
  <tr>
    <td><input type="button" value="  0   " onclick="getNum(0)"></td>
    <td><input type="button" value="  .   " onclick="getNum('.')"></td>
    <td><input type="button" value="  =   " onclick="getResult()"></td>
    <td><input type="button" value="  /   " onclick="getNum('/')"></td>
  </tr>
</table>
</body>
</html>

摘自 youngerhao的专栏