Bootstrap4 dropdown only works in the second click - drop-down-menu

Question

I am working on a django project, that is using bootstrap4 and I'm with a little problem with dropdown toggler.
The toggler only toggles the dropdown-menu after the second link!
What I've done wrong?
This is my dropdown HTML code:
<li class="nav-item dropdown show">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Dropdown Toggler
</a>
<div class="dropdown-menu" role="menu" aria-labelledby="navbarDropdown">
<a class="dropdown-item">Link 1</a>
<a class="dropdown-item">Link 2</a>
</div>
</li>

Answer 1

I had the same problem then resolved. Often I due to a double import of bootstrap js libraries.
Hope will help you.

Answer 2

you need to use the toggle like that and assign the data-target to the drop down menu with it's id
using
data-target="#navbarDropdown"
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarDropdown" aria-controls="navbarDropdown" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
and then assign that id to the menu
<li class="nav-item dropdown show">
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarDropdown" aria-controls="navbarDropdown" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div id="navbarDropdown" class="dropdown-menu" role="menu" aria-labelledby="navbarDropdown">
<a class="dropdown-item">Link 1</a>
<a class="dropdown-item">Link 2</a>
</div>
</li>

Answer 3

I came across the same issue recently, i solved this issue by adding $('.dropdown-toggle').dropdown() after loading the drop-down. Hope this may help without changing from the data-toggle="dropdown" to data-toggle="collapse".

Answer 4

Try to put bootstrap js file before bootstrap css
Ex:
Link Bootstrap.min.js file first.
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js"></script>
Then link css file
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css">
I got the same issue and after changing the positions of the js and css, dropdown works well. Hope it helped you.

Answer 5

I came across the same issue recently, i solved it by writing custom script:
<div class="filter-dropdown text-right">
<button type="button" class="btn btn-secondary dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Edit</button>
<div class="dropdown-menu">
<a class="dropdown-item" href="#">Link 1</a>
<a class="dropdown-item" href="#">Link 2</a>
<a class="dropdown-item" href="#">Link 3</a>
</div>
</div>
$(".filter-dropdown").on("click", ".dropdown-toggle", function(e) {
e.preventDefault();
$(this).parent().addClass("show");
$(this).attr("aria-expanded", "true");
$(this).next().addClass("show");
});

Answer 6

I had the same issue, it occurred because i imported bootstrap library twice. After removing one of them it worked well.
Hope it help you.

Answer 7

Agree with Iwan B. In Rails in javascripts I left only bootstrap.bundle.js. In Gemfile add gem 'popper_js', '~> 1.14.5', respectively in application.js we should add
//= require popper