Issue with Bootstrap v3.3.6 Dropdown Functionality

previewCan someone help me figure out why my Bootstrap dropdown menu is not working correctly? I recently downloaded Bootstrap to create a custom design, and while the carousel is functioning properly, when I click on the dropdown button, the dropdown-menu jumps to the left. If you have access to the files on your computer, could you take a look at them for me? It's too much code for me to paste here, but I've included a snippet of the HTML and part of the bootstrap.min.css file. Any advice would be greatly appreciated.

.dropdown-menu {
position: absolute;
top: 100%;
left: 0;
z-index: 1000;

Dropdown CSS Code...

}
.dropdown-menu.pull-right {
right: 0;
left: auto;
}

Additional Dropdown CSS Code...

javascriptjqueryhtmlcsstwitter-bootstrap

Answer №1

Utilizing Content Delivery Networks (CDNs) is highly advisable:

As stated on w3schools:

The benefits of using a Bootstrap CDN include: Many users may have already cached Bootstrap from MaxCDN while browsing other websites. Consequently, it will load faster when they access your site. Additionally, most CDNs are designed to serve files from servers closest to the user upon request, further improving loading times.

You can easily substitute your local bootstrap file links with these efficient CDNs:

<link rel="stylesheet" href="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.2/jquery.min.js"></script>
<script src="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>

I tested your code using these CDNs and it performed flawlessly.

Answer №2

It appears that there may be an issue with the script tags in your code. Consider utilizing the CDN for jQuery and Bootstrap instead. Here is an example that functions correctly...

Edit: If you wish to customize CSS, ensure that you use the same class name and define the styles AFTER the Bootstrap styles. For instance:

Bootstrap style

.dropdown-menu.pull-right {
    right: 0;
    left: auto;
}

Custom style

.dropdown-menu.pull-right {
    right: 20px;
}

If you need to prioritize the custom styling, utilize !important

.dropdown-menu.pull-right {
    right: 20px !important;
}

I recommend avoiding direct modifications to the Bootstrap files.

<html>
<body>

  <!-- Bootstrap Core CSS -->
  <link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css" rel="stylesheet">

 <div class="dropdown">
  <button class="btn btn-primary dropdown-toggle" type="button" data-toggle="dropdown">Dropdown Example
  <span class="caret"></span></button>
  <ul class="dropdown-menu">
    <li><a href="#">HTML</a></li>
    <li><a href="#">CSS</a></li>
    <li><a href="#">JavaScript</a></li>
  </ul>
</div>

<!-- jQuery --> 
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.2.3/jquery.min.js"></script>

<!-- Bootstrap Core JavaScript --> 
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script> 

</body>
</html>

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