Javascript按大小排序?
以下代码,怎么按大小排序?点击按钮,大小从小到大,在点击按钮,从大到小
<table>
<thead>
<tr>
<td>ID</td>
<td>大小</td>
</tr>
</thead>
<tbody>
<tr>
<td>1</td>
<td>100kb</td>
</tr>
<tr>
<td>2</td>
<td>5.2mb</td>
</tr>
<tr>
<td>3</td>
<td>700kb</td>
</tr>
</tbody>
</table>