html - CSS 选择器只选择第一行

Question

我正在解析一个 html 页面并且有一个很长的 CSS 选择器(我想不出一个更短的选择器，因为这个页面很愚蠢)。它应该选择表中的所有 tr，但只选择第二行......我错过了什么？

选择器:

body > table:nth-child(1) > tbody:nth-child(1) > tr:nth-child(2) > td:nth-child(1) > table:nth-child(1) > tbody:nth-child(1) > tr:nth-child(3) > td:nth-child(1) > table:nth-child(1) > tbody:nth-child(1) > tr:nth-child(8) > td:nth-child(1) > table:nth-child(4) > tbody:nth-child(1) > tr:nth-child(2) > td:nth-child(1) > table:nth-child(1) > tbody:nth-child(1) tr:not(:first-child)

该页面有多个表格，但前 90% 甚至无关紧要，在选择我要使用的表格后，我跟进一个“[space]tr:not(.. .)"，所以它应该选择所有降行，不是吗？

示例 html 页面(无法链接，您需要登录才能访问):http://pastebin.com/gprXTvzz

选择器成功选择我想要的表后(在选择器...> tbody:nth-child(1) tr:not(:first-child) )，年龄看起来像这个:

<tbody>
   <tr valign="bottom">
      <td class="blackmedium" width="80"><b>Part Number</b></td>
      <td class="blackmedium" width="100"><b>Manufacturer</b></td>
      <td class="blackmedium" width="40"><b>Abbr.</b></td>
      <td class="blackmedium" width="50"><b>WIX Part Number</b></td>
      <td class="blackmedium" width="50"><b>Lead Time</b></td>
   </tr>
   <tr>
      <td class="blackmedium" width="80">A0002701098</td>
      <td class="blackmedium" width="100">MERCEDES-BENZ</td>
      <td class="blackmedium" width="40">MBZ</td>
      <td class="blackmedium" width="50"> <a href="http://www.wixindustrialfilters.com/cross.aspx?Part=W03AT780" target="_blank">W03AT780</a>
      </td>
      <td class="blackmedium" width="50">
         STOCK
      </td>
   </tr>
   <tr bgcolor="#e0e0e0">
      <td class="blackmedium" width="80">A0002701598 Discontinued</td>
      <td class="blackmedium" width="100">MERCEDES-BENZ</td>
      <td class="blackmedium" width="40">MBZ</td>
      <td class="blackmedium" width="50"> <a href="javascript:var w=window.open('PartDetail.asp?Part=58892','PartDetail','left=200,top=200,width=530,height=500,toolbar=no,location=no,directories=no,status=no,menubar=no,resizable=yes,scrollbars=yes');w.focus();">58892</a>
      </td>
      <td class="blackmedium" width="50">
      </td>
   </tr>
   <tr>
      <td class="blackmedium" width="80">A0002772395</td>
      <td class="blackmedium" width="100">MERCEDES-BENZ</td>
      <td class="blackmedium" width="40">MBZ</td>
      <td class="blackmedium" width="50"> <a href="javascript:var w=window.open('PartDetail.asp?Part=51249','PartDetail','left=200,top=200,width=530,height=500,toolbar=no,location=no,directories=no,status=no,menubar=no,resizable=yes,scrollbars=yes');w.focus();">51249</a>
      </td>
      <td class="blackmedium" width="50">
      </td>
   </tr>
   <tr bgcolor="#e0e0e0">
      <td class="blackmedium" width="80">A0002772895</td>
      <td class="blackmedium" width="100">MERCEDES-BENZ</td>
      <td class="blackmedium" width="40">MBZ</td>
      <td class="blackmedium" width="50"> <a href="javascript:var w=window.open('PartDetail.asp?Part=57701','PartDetail','left=200,top=200,width=530,height=500,toolbar=no,location=no,directories=no,status=no,menubar=no,resizable=yes,scrollbars=yes');w.focus();">57701</a>
      </td>
      <td class="blackmedium" width="50">
      </td>
   </tr>
</tbody>

Answer 1

body > table:nth-child(1) > tbody:nth-child(1) > tr:nth-child(2) > td:nth-child(1) > table:nth-child(1) > tbody:nth-child(1) > tr:nth-child(3) > td:nth-child(1) > table:nth-child(1) > tbody:nth-child(1) > tr:nth-child(8) > td:nth-child(1) > table:nth-child(4) > tbody:nth-child(1) > tr:nth-child(2) > td:nth-child(1) > table:nth-child(1) > tbody:nth-child(1) tr:not(:first-child)

没有完全回答你的问题，但如果标记不是解析友好的，我需要找到一个深深嵌套在可怕的标记 table 元素中，我更喜欢通过 其中存在特定 header 。在这种情况下，您可以找到具有 Part Number 标题的表格。示例 XPath:

//table[tr[1]/td/b = "Part Number"]

然后，您可以在此表上使用 "not first child" CSS 选择器:

tr:not(:first-child)

或者，您也可以使用 adjacent selector (在 tr 元素之后查找 tr 元素，这在逻辑上会排除第一行):

tr + tr

希望这会简化事情。