js怎么样在点击ShowElement后获取input 123的值?
<tr >
<td>
<span>
<span ondblclick="ShowElement(this)"></span><br/>
</span>
</td>
<td ></td>
<td>
<span >
<span ></span><br/>
</span>
</td>
<td ></td>
<td ></td>
<td>
<span >
<span ></span><br/>
<input value="123" type="hidden"/>
</span>
</td>
<td>
<span >
<span ></span><br/>
<input value="526" type="hidden"/>
</span>
</td>
</tr>