Is it possible to modify the CSS of a single class when hovering over a child class of a different and unrelated class?

I am struggling with CSS combinators, especially when dealing with nested div, ul, and li elements.

My issue involves changing the CSS of a div with the class "H" when hovering over li elements with the class "G". Since all of this is contained within a single div with the class "A", I assume this can be accomplished using only CSS. However, I cannot seem to figure out the syntax. I am also open to exploring any JavaScript solutions.

The HTML code snippet is as follows:

<div class="A">
    <div class="B otherClasses">
        <div class="C otherClasses">
            <div class="D otherClasses">
                ...SOMECODE...
            </div>
            <div class="E otherClasses">
                <ul class="F otherClasses">
                    <li>...SOMECODE...</li>
                    <li>...SOMECODE...</li>
                    <li class="G">...SOMECODE...</li>
                    <li class="G">...SOMECODE...</li>
                    <li class="G">...SOMECODE...</li>
                    <li>...SOMECODE...</li>
                    <li class="G">...SOMECODE...</li>
                </ul>
            </div>
        </div>
    </div>
    <div class="H"></div>
</div>
javascriptjqueryhtmlcss

Answer №1

Here is a vanilla JavaScript solution for the task, eliminating the need to load large JavaScript libraries for something relatively simple.

var g = document.querySelectorAll('.G');
var h = document.querySelector('.H');

for (var i = 0; i < g.length; i++) {
  g[i].addEventListener('mouseover', function() {
    h.textContent = 'hello!';
  });

  g[i].addEventListener('mouseout', function() {
    h.textContent = 'goodbye!';
  });
}
<div class="A">
  <div class="B otherClasses">
    <div class="C otherClasses">
      <div class="D otherClasses">
        ...SOMECODE...
      </div>
      <div class="E otherClasses">
        <ul class="F otherClasses">
          <li>...SOMECODE...</li>
          <li>...SOMECODE...</li>
          <li class="G">...SOMECODE...</li>
          <li class="G">...SOMECODE...</li>
          <li class="G">...SOMECODE...</li>
          <li>...SOMECODE...</li>
          <li class="G">...SOMECODE...</li>
        </ul>
      </div>
    </div>
  </div>
  <div class="H">TEST</div>
</div>

Answer №2

When it comes to this particular situation, CSS selectors may not be very helpful. However, if you are able to utilize jQuery, one possible solution is:

$('.G').on('mouseenter', function() {
    $(this).closest('.B').next('.H').addClass('...');
});

The ... in the code above serves as a placeholder for a CSS class name that will adjust the styles of the element.

If your intention is to eliminate the class upon triggering the mouseleave event:

$('.G').on('mouseenter mouseleave', function(e) {
    $(this).closest('.B').next('.H').toggleClass('...', e.type === 'mouseenter');
});

In case each .A element only has one .H descendant, you can also employ the .find method to target the specific element:

$(this).closest('.A').find('.H');

Answer №3

Using CSS alone won't cut it, but JQuery can come to the rescue. Check out these two functions: one for changing color on hover and another for reverting back to the original color when no longer hovering.

$('li.G').mouseover(function() {
  $('.H').css('color', 'red');
});

$('li.G').mouseout(function() {
  $('.H').css('color', 'black');
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="A">
    <div class="B otherClasses">
        <div class="C otherClasses">
            <div class="D otherClasses">
                ...SOMECODE...
            </div>
            <div class="E otherClasses">
                <ul class="F otherClasses">
                    <li>...SOMECODE...</li>
                    <li>...SOMECODE...</li>
                    <li class="G">...SOMECODE...</li>
                    <li class="G">...SOMECODE...</li>
                    <li class="G">...SOMECODE...</li>
                    <li>...SOMECODE...</li>
                    <li class="G">...SOMECODE...</li>
                </ul>
            </div>
        </div>
    </div>
    <div class="H">TEST</div>
</div>

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