菜鸟求助responsetext取值问题
<tr>
<td nowrap style="font-weight: bold;">Rd(%)</td>
<td colspan="2">平均值</td>
<td>——</td>
<td style="font-weight: bold;">+b</td>
<td colspan="2">平均值</td>
<td>——</td>
</tr>
</tbody>
</table>
<table class="tb1 table-striped table-hover">
<tbody>
<tr>
<td></td>
<td>条码</td>
<td>颜色级</td>
<td width="50">轧工<br>质量</td>
<td width="50">马克隆值</td>
<td width="60">马克隆<br>档次</td>
<td>平均回潮</td>
<td>平均含杂</td>
<td>长 度<br>(mm)</td>
<td width="70">长度整齐度代号</td>
<td width="60">断裂比强度代号</td>
</tr>
<tr>
<td>1</td>
<td>00660361310031222857000121105234</td>
<td>淡黄染棉1级</td>
<td>P2</td>
<td>4.5</td>
<td>B2</td>
<td>7.4</td>
<td>1.3</td>
<td>29.7</td>
<td>U2</td>
<td>S3</td>
</tr>
<tr>
<td>2</td>
<td>00660361310031225656000121105224</td>
<td>淡点污棉1级</td>
<td>P2</td>
<td>4.9</td>
<td>B2</td>
<td>7.4</td>
<td>1.3</td>
<td>27.33</td>
<td>U2</td>
<td>S3</td>
</tr>
取出下面<td>1</td>开始<td></td>间的值该怎么写