<table id="mytable" border=1 style='width:100%;text-align:center'>
  <thead>
  	<tr>
      <th>名称</th>
      <th>数量</th>
    </tr>
  </thead>
  <tbody>
    <tr><td>鱼</td><td><input type='text'></td></tr>
    <tr><td>肉</td><td><input type='text'></td></tr>
    <tr><td>酒</td><td><input type='text'></td></tr>
    <tr><td>菜</td><td><input type='text'></td></tr>
  </tbody>
</table> 
<br />
<button>show result</button>
<br />
<span id="result"></span>