Activate Bootstrap 5 dropdown exclusively when positioned above its parent element

I am facing an issue with a Bootstrap 5 dropdown menu placed within a div. When I click the icon, the dropdown appears but only those options that overlap the parent div can be hovered/clicked.

In the provided screenshot, the 'Action' option functions correctly as it overlaps the blue parent div. However, hovering over 'Another action' or 'Something else here' does not trigger any response, and clicking them simply closes the menu.

https://i.sstatic.net/lmZQw.png

It seems like the problem might be related to the boundary option mentioned here. While I don't fully comprehend the Bootstrap or Popper documentation on this, my assumption is that I should set the value to a container div (or possibly even body).

The Bootstrap documentation mentions that this can only be achieved through JavaScript (not via data attributes), so I have included the following code:

var dropdownElementList = [].slice.call(document.querySelectorAll('.dropdown-toggle'))
    var dropdownList = dropdownElementList.map(function (dropdownToggleEl) {
      return new bootstrap.Dropdown(dropdownToggleEl, {
        boundary: document.querySelector('#planContainer')
      })
    })

However, this code doesn't seem to make any difference. I have also experimented with setting

boundary: document.getElementsByTagName("BODY")[0]
, but still no luck.

If anyone has suggestions on what could be going wrong, I would greatly appreciate the help.

Answer №1

This is the HTML code snippet that I put together from a fiddle, and it's doing the job for me right now. Have you tried anything different?

<!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8">
    <link href="https://cdn.jsdelivr.net/npm/<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="7e5c41414151414251524065a23d3376f3b752f52f">[email protected]</a>/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous"gt;
    <script src="https://cdn.jsdelivr.net/npm/@popperjs/<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="24650918025903242a2e280509181fe41869030055">[email protected]</a>/dist/umd/popper.min.js" integrity="sha384-IQsoLXl5PILFhosVNubq5LC7Qb9DXgDA9i+tQ8Zj3iwWAwPtgFTxbJ8NT4GN1R8p" crossorigin="anonymous"></script>
    <script src="https://cdn.jsdelivr.net/npm/<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="afcec2dfcaefe9fccddcc4cbcfc8e9cbcfd8cdac91cdf0ded2cde69eead49dee98dcdaeff0faf3fff6abbdeff1ebe3faeeeaaacef2cbbefa2c8cacddc896cceeaabdbc99489919cd389aba896cceeaab909f989695848ebdbe296bccbee40c4">[email protected]</a>/dist/js/bootstrap.min.js" integrity="sha384-cVKIPhGWiC2Al4u+LWgxfKTRIcfu0JTxR+EQDz/bgldoEyl4H0zUF0QKbrJ0EcQF" crossorigin="anonymous"></script>
    <style>
      .formatToolbar {
        margin: 20px auto;
        width: 900px;
        opacity: 0.8;
        left: 0px;
        z-index: 99;
        color: white;
        background-color: #42469D;
        border-radius: 40px;
        display: flex;
        flex-direction: row;
        justify-content: space-around;
        padding-left: 15px;
        padding-right: 15px;
      }
      
      .formatToolbarIconOuter {
        margin: 12px ;
        color: white ;
        cursor:pointer;
        text-align: center;
        flex: 0 1 auto;
      }
    </style>
    </head>
    <body>
      <div class="row">
        <div class="formatToolbar">
          <div class="formatToolbarIconOuter">
            <span class="dropdown-toggle" type="button" data-bs-toggle="dropdown" id="fullColourCodeDropdown">
              <i class="fas fa-palette"></i>
              <div class="formatToolbarIconLabel">
                Full seat <br />colour coding
              </div>
            </span>
            <ul class="dropdown-menu" aria-labelledby="fullColourCodeDropdown">
              <li><a class="dropdown-item" href="#">Action</a></li>
              <li><a class="dropdown-item" href="#">Another action</a></li>
              <li><a class="dropdown-item" href="#">Something else here</a></li>
            </ul>
        </div>
      </div>
    </div>
    <div class="row h-25">
      Another div
      <hr>
    </div>
  </body>
</html>

Answer №2

In the event that you are still encountering the issue, it is possible that the parent element may have been assigned an absolute position. By removing this assignment from the element, the problem should be resolved.

Answer №3

Your code should have functioned as expected. The issue you are encountering may be due to the z-index values of the items below having a higher z-index than the Bootstrap default (which is typically set at 1000).

To resolve this, either lower the z-index of the items beneath, or increase the z-index of the .dropdown-toggle using a CSS override, for example;

.dropdown-toggle {
  z-index: 90000;
}

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