通过内部跨度的内部文本查找li元素

Question

我有下面的HTML

<ul id="tabStripSecondaryElements" class="k-tabstrip-items k-reset" data-role="tabstrip" style="margin-left: 37px; margin-right: 40px;" role="tablist" aria-activedescendant="tab_0">
   <li class="k-item tabClick k-state-default k-first" id="tab_1" value="1" role="tab" aria-controls="tabStripSecondaryElements-1"><span class="k-loading k-complete"></span><span unselectable="on" class="k-link"> Automobile&nbsp;&nbsp;&nbsp;<span class="fa fa-ellipsis-v"></span></span></li>
   <li class="k-item tabClick k-state-default" id="tab_3" value="3" role="tab" aria-controls="tabStripSecondaryElements-2"><span class="k-loading k-complete"></span><span unselectable="on" class="k-link"> Router&nbsp;&nbsp;&nbsp;<span class="fa fa-ellipsis-v"></span></span></li>
   <li class="k-item tabClick k-state-default" id="tab_4" value="4" role="tab" aria-controls="tabStripSecondaryElements-3"><span class="k-loading k-complete"></span><span unselectable="on" class="k-link"> Smart City Sensor&nbsp;&nbsp;&nbsp;<span class="fa fa-ellipsis-v"></span></span></li>
   <li class="k-item tabClick k-state-default" id="tab_5" value="5" role="tab" aria-controls="tabStripSecondaryElements-4"><span class="k-loading k-complete"></span><span unselectable="on" class="k-link"> ZigBee Power Cable&nbsp;&nbsp;&nbsp;<span class="fa fa-ellipsis-v"></span></span></li>
   <li class="k-item tabClick k-state-default" id="tab_6" value="6" role="tab" aria-controls="tabStripSecondaryElements-5"><span class="k-loading k-complete"></span><span unselectable="on" class="k-link"> Tracker&nbsp;&nbsp;&nbsp;<span class="fa fa-ellipsis-v"></span></span></li>
   <li class="k-item tabClick k-state-default" id="tab_7" value="7" role="tab" aria-controls="tabStripSecondaryElements-6"><span class="k-loading k-complete"></span><span unselectable="on" class="k-link"> Fleet Intelligence&nbsp;&nbsp;&nbsp;<span class="fa fa-ellipsis-v"></span></span></li>
   <li class="k-item tabClick k-state-default" id="tab_8" value="8" role="tab" aria-controls="tabStripSecondaryElements-7"><span class="k-loading k-complete"></span><span unselectable="on" class="k-link"> Mobile&nbsp;&nbsp;&nbsp;<span class="fa fa-ellipsis-v"></span></span></li>
   <li class="k-item tabClick k-state-default" id="tab_9" value="9" role="tab" aria-controls="tabStripSecondaryElements-8"><span class="k-loading k-complete"></span><span unselectable="on" class="k-link"> Double Door&nbsp;&nbsp;&nbsp;<span class="fa fa-ellipsis-v"></span></span></li>
   <li class="k-item tabClick k-state-default" id="tab_87" value="87" role="tab" aria-controls="tabStripSecondaryElements-10"><span class="k-loading k-complete"></span><span unselectable="on" class="k-link"> Test&nbsp;&nbsp;&nbsp;<span class="fa fa-ellipsis-v"></span></span></li>

</ul>

我试图通过内部span元素的内部文本找到li元素.

例如:路由器具有li元素id - tab_1

我尝试使用以下jquery代码,但它不工作并返回空

$('li.k-item tabClick k-state-default span.k-link:contains("Router")');

有没有其他方法可以得到这个？

Answer 1

问题出在您的选择器上.k-item tabClick k-state-default类之间有空格,它们应该与class选择器前缀的句点分隔符连接在一起.然后这将选择span.要从中获得,li您可以使用closest():

var $span = $('li.k-item.tabClick.k-state-default span.k-link:contains("Router")');

var $li = $span.closest('li');
$li.css('color', '#C00');

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<ul id="tabStripSecondaryElements" class="k-tabstrip-items k-reset" data-role="tabstrip" style="margin-left: 37px; margin-right: 40px;" role="tablist" aria-activedescendant="tab_0">
  <li class="k-item tabClick k-state-default k-first" id="tab_1" value="1" role="tab" aria-controls="tabStripSecondaryElements-1">
    <span class="k-loading k-complete"></span>
    <span unselectable="on" class="k-link"> 
      Automobile&nbsp;&nbsp;&nbsp;
      <span class="fa fa-ellipsis-v"></span>
    </span>
  </li>
  <li class="k-item tabClick k-state-default" id="tab_3" value="3" role="tab" aria-controls="tabStripSecondaryElements-2">
    <span class="k-loading k-complete"></span>
    <span unselectable="on" class="k-link"> 
      Router&nbsp;&nbsp;&nbsp;
      <span class="fa fa-ellipsis-v"></span>
    </span>
  </li>
  <li class="k-item tabClick k-state-default" id="tab_4" value="4" role="tab" aria-controls="tabStripSecondaryElements-3">
    <span class="k-loading k-complete"></span>
    <span unselectable="on" class="k-link"> 
      Smart City Sensor&nbsp;&nbsp;&nbsp;
      <span class="fa fa-ellipsis-v"></span>
    </span>
  </li>
  <li class="k-item tabClick k-state-default" id="tab_5" value="5" role="tab" aria-controls="tabStripSecondaryElements-4">
    <span class="k-loading k-complete"></span>
    <span unselectable="on" class="k-link"> 
      ZigBee Power Cable&nbsp;&nbsp;&nbsp;
      <span class="fa fa-ellipsis-v"></span>
    </span>
  </li>
  <li class="k-item tabClick k-state-default" id="tab_6" value="6" role="tab" aria-controls="tabStripSecondaryElements-5">
    <span class="k-loading k-complete"></span>
    <span unselectable="on" class="k-link"> 
      Tracker&nbsp;&nbsp;&nbsp;
      <span class="fa fa-ellipsis-v"></span>
    </span>
  </li>
  <li class="k-item tabClick k-state-default" id="tab_7" value="7" role="tab" aria-controls="tabStripSecondaryElements-6">
    <span class="k-loading k-complete"></span>
    <span unselectable="on" class="k-link"> 
      Fleet Intelligence&nbsp;&nbsp;&nbsp;
      <span class="fa fa-ellipsis-v"></span>
    </span>
  </li>
  <li class="k-item tabClick k-state-default" id="tab_8" value="8" role="tab" aria-controls="tabStripSecondaryElements-7">
    <span class="k-loading k-complete"></span>
    <span unselectable="on" class="k-link"> 
      Mobile&nbsp;&nbsp;&nbsp;
      <span class="fa fa-ellipsis-v"></span>
    </span>
  </li>
  <li class="k-item tabClick k-state-default" id="tab_9" value="9" role="tab" aria-controls="tabStripSecondaryElements-8">
    <span class="k-loading k-complete"></span>
    <span unselectable="on" class="k-link"> 
      Double Door&nbsp;&nbsp;&nbsp;
      <span class="fa fa-ellipsis-v"></span>
    </span>
  </li>
  <li class="k-item tabClick k-state-default" id="tab_87" value="87" role="tab" aria-controls="tabStripSecondaryElements-10">
    <span class="k-loading k-complete"></span>
    <span unselectable="on" class="k-link"> 
      Test&nbsp;&nbsp;&nbsp;
      <span class="fa fa-ellipsis-v"></span>
    </span>
  </li>

</ul>

作为避免的替代方法,closest()您可以使用:has直接选择li:

var $li = $('li.k-item.tabClick.k-state-default:has(span.k-link:contains("Router"))');
$li.css('color', '#C00');

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<ul id="tabStripSecondaryElements" class="k-tabstrip-items k-reset" data-role="tabstrip" style="margin-left: 37px; margin-right: 40px;" role="tablist" aria-activedescendant="tab_0">
  <li class="k-item tabClick k-state-default k-first" id="tab_1" value="1" role="tab" aria-controls="tabStripSecondaryElements-1">
    <span class="k-loading k-complete"></span>
    <span unselectable="on" class="k-link"> 
      Automobile&nbsp;&nbsp;&nbsp;
      <span class="fa fa-ellipsis-v"></span>
    </span>
  </li>
  <li class="k-item tabClick k-state-default" id="tab_3" value="3" role="tab" aria-controls="tabStripSecondaryElements-2">
    <span class="k-loading k-complete"></span>
    <span unselectable="on" class="k-link"> 
      Router&nbsp;&nbsp;&nbsp;
      <span class="fa fa-ellipsis-v"></span>
    </span>
  </li>
  <li class="k-item tabClick k-state-default" id="tab_4" value="4" role="tab" aria-controls="tabStripSecondaryElements-3">
    <span class="k-loading k-complete"></span>
    <span unselectable="on" class="k-link"> 
      Smart City Sensor&nbsp;&nbsp;&nbsp;
      <span class="fa fa-ellipsis-v"></span>
    </span>
  </li>
  <li class="k-item tabClick k-state-default" id="tab_5" value="5" role="tab" aria-controls="tabStripSecondaryElements-4">
    <span class="k-loading k-complete"></span>
    <span unselectable="on" class="k-link"> 
      ZigBee Power Cable&nbsp;&nbsp;&nbsp;
      <span class="fa fa-ellipsis-v"></span>
    </span>
  </li>
  <li class="k-item tabClick k-state-default" id="tab_6" value="6" role="tab" aria-controls="tabStripSecondaryElements-5">
    <span class="k-loading k-complete"></span>
    <span unselectable="on" class="k-link"> 
      Tracker&nbsp;&nbsp;&nbsp;
      <span class="fa fa-ellipsis-v"></span>
    </span>
  </li>
  <li class="k-item tabClick k-state-default" id="tab_7" value="7" role="tab" aria-controls="tabStripSecondaryElements-6">
    <span class="k-loading k-complete"></span>
    <span unselectable="on" class="k-link"> 
      Fleet Intelligence&nbsp;&nbsp;&nbsp;
      <span class="fa fa-ellipsis-v"></span>
    </span>
  </li>
  <li class="k-item tabClick k-state-default" id="tab_8" value="8" role="tab" aria-controls="tabStripSecondaryElements-7">
    <span class="k-loading k-complete"></span>
    <span unselectable="on" class="k-link"> 
      Mobile&nbsp;&nbsp;&nbsp;
      <span class="fa fa-ellipsis-v"></span>
    </span>
  </li>
  <li class="k-item tabClick k-state-default" id="tab_9" value="9" role="tab" aria-controls="tabStripSecondaryElements-8">
    <span class="k-loading k-complete"></span>
    <span unselectable="on" class="k-link"> 
      Double Door&nbsp;&nbsp;&nbsp;
      <span class="fa fa-ellipsis-v"></span>
    </span>
  </li>
  <li class="k-item tabClick k-state-default" id="tab_87" value="87" role="tab" aria-controls="tabStripSecondaryElements-10">
    <span class="k-loading k-complete"></span>
    <span unselectable="on" class="k-link"> 
      Test&nbsp;&nbsp;&nbsp;
      <span class="fa fa-ellipsis-v"></span>
    </span>
  </li>

</ul>