js字符串转换

Question

有没大神帮忙看下   。
字符串：<tr>
<td>
    <select>
        <option>1</option>
        <option>2</option>
        <option>3</option>
    </select>
</td>
</tr>
<tr>
<td>
    <select>
        <option>11</option>
        <option>22</option>
        <option>33</option>
    </select>
</td>
</tr>
<tr>
<td>
    <select>
        <option>111</option>
        <option>222</option>
        <option>333</option>
    </select>
</td>
</tr>要怎么转换成<tr>
<td>
1
</td>
</tr>
<tr>
<td>
   2
</td>
</tr>
<tr>
<td>
   3
</td>
</tr>

Answer 1

用Javescript  JQ都行

Answer 2

`<tr>
<td>
    <select>
        <option>1</option>
        <option>2</option>
        <option>3</option>
    </select>
</td>
</tr>
<tr>
<td>
    <select>
        <option>11</option>
        <option>22</option>
        <option>33</option>
    </select>
</td>
</tr>
<tr>
<td>
    <select>
        <option>111</option>
        <option>222</option>
        <option>333</option>
    </select>
</td>
</tr>`.replace(/<select>(\D+?(\d+)\D+?){3}<\/select>/gm,function(a,b,c){
 return c.length;
})