Question

I have this and I want to check the first <li> who contains <a> with the class .selected.

I have tried this : $( "li a" ).first().hasClass('selected') but my <li> isn't detected.

Here is my HTML code.

<ul>
  <li>
    <a class="thumbnail selected">
     <img src="thumb1.jpg">
    </a>
  </li>
  <li>
    <a class="thumbnail unselect">
     <img src="thumb2.jpg">
    </a>
  </li>
  <li>
    <a class="thumbnail unselect">
     <img src="thumb3.jpg">
    </a>
  </li>
  <li>
    <a class="thumbnail unselect">
     <img src="thumb4.jpg">
    </a>
  </li>
  <li>
    <a class="thumbnail unselect">
     <img src="thumb5.jpg">
    </a>
  </li>
</ul>

Could you help me ?

Answer 1

您可以使用.has（）之类的

＆＃13;

$('li:has(a.selected)').first().addClass('found')

＆＃13;

.found {
  border: 1px solid red;
}

＆＃13;

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<ul>
  <li>
    <a class="thumbnail selected">
      <img src="thumb1.jpg">
    </a>
  </li>
  <li>
    <a class="thumbnail unselect">
      <img src="thumb2.jpg">
    </a>
  </li>
  <li>
    <a class="thumbnail unselect">
      <img src="thumb3.jpg">
    </a>
  </li>
  <li>
    <a class="thumbnail unselect">
      <img src="thumb4.jpg">
    </a>
  </li>
  <li>
    <a class="thumbnail unselect">
      <img src="thumb5.jpg">
    </a>
  </li>
</ul>

＆＃13;

Answer 2

对于第一个选定的锚标记，只需尝试此

$('li a.selected:first')

检查<li>是否包含<a> with a certain class

2 个答案: