Bootstrap4 dropdown only works in the second click

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>

score 41 · Answer 1 · answered Aug 04 '18 at 14:52

41

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

answered Aug 04 '18 at 14:52

Iwan B.

3,982
2
27
18

Yeah, this was also my issue. I used Mix extract vendor and I added the whole boostrap.js there while only cherry picking some js components in my entry point and laravel mix was getting confused. – Stem Florin Apr 23 '19 at 08:05
proceeding with this answer by, I am using a Template which loads its own JS It also loaded bootstrap.js file, so had to remove previously added – Jitendra Sawant Apr 13 '20 at 08:37
This was my problem. I use Laravel, and the bootstrap js file is already exists in app.js. – Rouhollah Mazarei Feb 26 '21 at 07:10

score 15 · Accepted Answer · answered May 23 '18 at 23:55

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>

Arjun · Answer 3 · 2018-10-25T18:09:56.377

4

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".

edited Oct 25 '18 at 18:09

answered Oct 25 '18 at 06:37

Arjun

113
2
7

score 3 · Answer 4 · answered Oct 04 '18 at 14:39

3

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.

answered Oct 04 '18 at 14:39

Nimezzz

1,814
14
15

normally you shouldn't load your scripts in ``, but I would refer you to [this comprehensive answer](https://stackoverflow.com/a/24070373/4770813) for a modern approach – Scaramouche Nov 05 '18 at 04:22

score 2 · Answer 5 · answered Sep 23 '19 at 18:09

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"); 
  });

score 2 · Answer 6 · answered Jul 03 '20 at 23:50

2

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.

answered Jul 03 '20 at 23:50

kumar shubham

21
1

score 0 · Answer 7 · answered Aug 04 '19 at 15:47

0

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

answered Aug 04 '19 at 15:47

Alexander Shahbazov

41
1
4

Bootstrap4 dropdown only works in the second click

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