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HomeWeb Front-endCSS TutorialIf the parent has a child with CSS and HTML, apply styles to the parent

如果父级有一个具有 CSS 和 HTML 的子级,则将样式应用于父级

Parent selector does not exist in CSS3. For this, it is recommended to use the CSS4 selector $, which might look like this (selecting the li element) -

ul $li ul.sub { ... }

As an alternative, using jQuery, you can achieve this functionality with a single line of code. The :has() selector selects all elements that contain one or more elements that match the specified selector.

  • The tag defines the list item.
      Tags define an unordered (bulleted) list.
      $('ul li:has(ul.sub)').addClass('has_sub');

      You can add styles to li.has_sub in CSS.

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