html – 如何仅在嵌套的ul中悬停当前的li？

li:hover {
  BACkground-color: lightgray;
}
ul li ul li:hover {
  font-weight: bold;
}

<ul>
  <li>fnord
    <ul>
      <li>baz</li>
      <li>foo
        <ul>
          <li>baz</li>
          <li>foo</li>
        </ul>
      </li>
    </ul>
  </li>
  <li>gnarf
    <ul>
      <li>baz</li>
      <li>foo
        <ul>
          <li>baz</li>
          <li>yolo</li>
        </ul>
      </li>
    </ul>
  </li>
</ul>

我相信只有CSS才能获得最接近的是从悬停元素的子项中删除悬停样式……这对父母没有帮助.

li:hover {
    BACkground-color: lightgray;
}
li:hover {
    font-weight: bold;    
}
li:hover ul {
    BACkground-color: white;
    font-weight: normal;
}

<ul>
    <li>fnord
        <ul>
            <li>baz</li>
            <li>foo
                <ul>
                    <li>baz</li>
                    <li>foo</li>
                </ul>
            </li>
        </ul>
    </li>
    <li>gnarf
        <ul>
            <li>baz</li>
            <li>foo
                <ul>
                    <li>baz</li>
                    <li>foo</li>
                </ul>
            </li>
        </ul>
    </li>
</ul>

JSFiddle

您找到的副本上接受的答案是我使用e.stopPropagation：Cascading <li>-hover effect using CSS看到用JavaScript执行此操作的最佳方式.您希望在该选择器中比’all lis’更具体：

$('li').mouseover(function(E)
{
    e.stopPropagation();
    $(this).addClass('currentHover');
});

$('li').mouseout(function()
{
    $(this).removeClass('currentHover');
});

.currentHover {
    BACkground-color: red;
}
li.currentHover ul {
    BACkground-color: white;
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<ul class="container">
    <li>fnord
        <ul>
            <li>baz</li>
            <li>foo
                <ul>
                    <li>baz</li>
                    <li>foo</li>
                </ul>
            </li>
        </ul>
    </li>
    <li>gnarf
        <ul>
            <li>baz</li>
            <li>foo
                <ul>
                    <li>baz</li>
                    <li>foo</li>
                </ul>
            </li>
        </ul>
    </li>
</ul>

从那里回答JSFiddle.