Hovering over the Bootstrap dropdown menu to reveal its contents

I am currently working on an Angular project and facing an issue with the Bootstrap 5 dropdown feature. I want the dropdown menu to appear in the center of the navbar when hovered over, but the problem is that the .show class only activates when the dropdown is clicked. If I hover without clicking, the dropdown menu appears at the bottom of the li. Here are some images illustrating what I am trying to achieve.

This is how it looks when hovering: https://i.sstatic.net/m6C44.png

And this is how it looks when clicked with the show class appearing: https://i.sstatic.net/tcE2C.png

What I need is for the dropdown to function on hover like it does on click, as the show class positions the dropdown menu in the center. Here is the link to the code on StackBlitz, and below is my implementation:

HTML:

<li class="nav-item dropdown position-static me-lg-3">
        <a class="nav-link dropdown-toggle" id="drop" role="button" data-bs-toggle="dropdown" aria-expanded="false">Themes</a>
        <div class="dropdown-menu" aria-labelledby="drop">
          <a class="dropdown-item" href="../default/">Default</a>
          <a class="dropdown-item" href="../united/">United</a>
          ...
        </div>
      </li>

CSS:

.dropdown:hover .dropdown-menu {
  display: flex;
  flex-wrap: wrap;
}

.dropdown-menu.show {
  width: 40%;
  margin-left: 29vw;
}

.dropdown-item {
  width: 25% !important;
}

Answer №1

After extensively studying Bootstrap documentation, analyzing the code changes upon dropdown click, and delving into jQuery coding, I successfully managed to make it work by implementing the following steps:

Upon clicking the dropdown, I observed the following HTML changes:

  1. The a element within the li with class dropdown adopts the class show, and the attribute aria-expanded is set to true.
  2. The div with class dropdown-menu, also within the same li with class dropdown, obtains the class shown, and the attribute data-bs-popper = none is appended.

To address this, I created two functions to target the class dropdown and monitor mouse hover events over this element. Upon mouse enter, the classes and attributes are added, while they are removed when the mouse exits. Here is the code snippet:

$('.dropdown').on("mouseenter", () => {
    $(".dropdown > a").addClass('show')
    $(".dropdown > a").attr("aria-expanded","true");
    $(".dropdown > div").attr("data-bs-popper","none");
    $(".dropdown > div").addClass('show')
  })

$('.dropdown').on("mouseleave", () => {
    $(".dropdown > a").removeClass('show')
    $(".dropdown > a").attr("aria-expanded","false");
    $(".dropdown > div").removeAttr("data-bs-popper","none");
    $(".dropdown > div").removeClass('show')
  })

This implementation targets the elements inside the li with the class dropdown, adding or removing classes and attributes accordingly.

<li class="nav-item dropdown">
     <a class="nav-link dropdown-toggle" id="drop" role="button" data-bs-toggle="dropdown" aria-expanded="false">Themes</a>
     <div class="dropdown-menu" aria-labelledby="drop">
           <a class="dropdown-item" href="../default/">Default</a>
           <a class="dropdown-item" href="../united/">United</a>
           <a class="dropdown-item" href="../yeti/">Yeti</a>
     </div>
</li>

Additionally, in the CSS styling, I included margin-top: -1vh to ensure the dropdown menu opens smoothly as the mouse hovers over the element. The final CSS code appears as follows:

.dropdown:hover .dropdown-menu {
  display: flex;
  flex-wrap: wrap;
}

.dropdown-menu.show {
  margin-top: -1vh;
  width: 40%;
  margin-left: 38vw;
}

.dropdown-item {
  width: 25% !important;
}

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