Bootstrap 4 change caret on clicking dropdown

html css angular bootstrap-4

32,275

Solution 1

In Bootstrap V4 they have dropped the Glyphicons. Below code will work well as per your need. For drop-down icon style, you can use font awesome.

[data-toggle="collapse"]:after {
    display: inline-block;
    font: normal normal normal 14px/1 FontAwesome;
    font-size: inherit;
    text-rendering: auto;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
  content: "\f054";
  transform: rotate(90deg) ;
  transition: all linear 0.25s;
  }   
[data-toggle="collapse"].collapsed:after {
  transform: rotate(0deg) ;
}

<link href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet"/>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.0.0-beta/js/bootstrap.min.js"></script>
<link href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.0.0-beta/css/bootstrap.min.css" rel="stylesheet"/>

<div id="accordion" role="tablist">
  <div class="card">
    <div class="card-header" role="tab" id="headingOne">
      <h5 class="mb-0">
        <a data-toggle="collapse" href="#collapseOne" aria-expanded="true" aria-controls="collapseOne">
          Collapsible Group Item #1
        </a>
      </h5>
    </div>

    <div id="collapseOne" class="collapse show" role="tabpanel" aria-labelledby="headingOne" data-parent="#accordion">
      <div class="card-body">
        Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch. Food truck quinoa nesciunt laborum eiusmod. Brunch 3 wolf moon tempor, sunt aliqua put a bird on it squid single-origin coffee nulla assumenda shoreditch et. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo. Leggings occaecat craft beer farm-to-table, raw denim aesthetic synth nesciunt you probably haven't heard of them accusamus labore sustainable VHS.
      </div>
    </div>
  </div>
  <div class="card">
    <div class="card-header" role="tab" id="headingTwo">
      <h5 class="mb-0">
        <a class="collapsed" data-toggle="collapse" href="#collapseTwo" aria-expanded="false" aria-controls="collapseTwo">
          Collapsible Group Item #2
        </a>
      </h5>
    </div>
    <div id="collapseTwo" class="collapse" role="tabpanel" aria-labelledby="headingTwo" data-parent="#accordion">
      <div class="card-body">
        Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch. Food truck quinoa nesciunt laborum eiusmod. Brunch 3 wolf moon tempor, sunt aliqua put a bird on it squid single-origin coffee nulla assumenda shoreditch et. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo. Leggings occaecat craft beer farm-to-table, raw denim aesthetic synth nesciunt you probably haven't heard of them accusamus labore sustainable VHS.
      </div>
    </div>
  </div>
  <div class="card">
    <div class="card-header" role="tab" id="headingThree">
      <h5 class="mb-0">
        <a class="collapsed" data-toggle="collapse" href="#collapseThree" aria-expanded="false" aria-controls="collapseThree">
          Collapsible Group Item #3
        </a>
      </h5>
    </div>
    <div id="collapseThree" class="collapse" role="tabpanel" aria-labelledby="headingThree" data-parent="#accordion">
      <div class="card-body">
        Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch. Food truck quinoa nesciunt laborum eiusmod. Brunch 3 wolf moon tempor, sunt aliqua put a bird on it squid single-origin coffee nulla assumenda shoreditch et. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo. Leggings occaecat craft beer farm-to-table, raw denim aesthetic synth nesciunt you probably haven't heard of them accusamus labore sustainable VHS.
      </div>
    </div>
  </div>
</div>

Here is the codepen demo link

Note: In your demo link they have used Bootstrap V3.

Solution 2

Here is how I got this working with Bootstrap4-CSS-fontAwesome & No JS/JQuery.

<a class="accordion-toggle collapsed" data-toggle="collapse" href="#anyId">
  click
</a>

<div id="anyId" class="collapse">
    Hi
</div>

<!-- CDNs for font-awesome, bootstrap, JQuery -->
<link href="//netdna.bootstrapcdn.com/font-awesome/3.2.1/css/font-awesome.css" rel="stylesheet">

<link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta/css/bootstrap.min.css" rel="stylesheet">

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>

<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta/js/bootstrap.min.js"></script>

.css

.accordion-toggle:after {
  font-family: 'FontAwesome';/* essential to enable caret symbol*/
  content: "\f0d7";/* adjust as needed, taken from font-awesome.css */
  color: grey;
}
.accordion-toggle.collapsed:after {
  /* symbol for "collapsed" panels */
  content: "\f0da";  /* adjust as needed, taken from font-awesome.css */
}

Thank you @Satheesh Kumar

Solution 3

If you're using SCSS, there are built-in mixins especially for this, located at ~bootstrap/scss/mixins/_caret.scss.

caret-down, caret-up, caret-right, caret-left and caret($direction).

So, this can become as easy as:

.panel-heading .accordion-toggle {
    @include caret(right);

    &.collapsed {
        @include caret(left);
    }
}

or, if your HTML contains aria-expanded attribute (which is highly advised)

.panel-heading .accordion-toggle {
    &[aria-expanded="false"] {
        @include caret(left);
    }

    &[aria-expanded="true"] {
        @include caret(right);
    }
}

Solution 4

Here's how I got mine working using only CSS for bootstrap 4.2 and fontawesome. I've used the aria label and added transitions for the icon, using a span class for the icon

CSS:

#accordionExample .btn[aria-expanded=false] span:before {
  font-family: "Font Awesome 5 Free";
  font-weight: 900;
  content: "\f107";
  float: right;
 transition: all .5s;
}

#accordionExample .btn[aria-expanded=true] span:before {
  font-family: "Font Awesome 5 Free";
  font-weight: 900;
  content: "\f107";
  float: right;
  transition: all .5s;
  -webkit-transform: rotate(180deg);
    -moz-transform: rotate(180deg);
    transform: rotate(180deg);
}

HTML:

<div class="container my-5 mw-600">
  <div class="accordion" id="accordionExample">
  <div class="card">
    <div class="card-header" id="headingOne">

        <a class="btn btn-link d-flex" data-toggle="collapse" data-target="#collapseOne" aria-expanded="false">
          Collapsible Group Item #1
          <span class="ml-auto"></span></a>

    </div>

    <div id="collapseOne" class="collapse" aria-labelledby="headingOne" data-parent="#accordionExample">
      <div class="card-body">
        Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch. Food truck quinoa nesciunt laborum eiusmod. Brunch 3 wolf moon tempor, sunt aliqua put a bird on it squid single-origin coffee nulla assumenda shoreditch et. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo. Leggings occaecat craft beer farm-to-table, raw denim aesthetic synth nesciunt you probably haven't heard of them accusamus labore sustainable VHS.
      </div>
    </div>
  </div>
  <div class="card">
    <div class="card-header" id="headingTwo">

        <a class=" btn btn-link collapsed d-flex align-items-center" data-toggle="collapse" data-target="#collapseTwo" aria-expanded="false">
          Collapsible Group Item #2
          <span class="ml-auto"></span>
        </a>

    </div>
    <div id="collapseTwo" class="collapse" aria-labelledby="headingTwo" data-parent="#accordionExample">
      <div class="card-body">
        Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch. Food truck quinoa nesciunt laborum eiusmod. Brunch 3 wolf moon tempor, sunt aliqua put a bird on it squid single-origin coffee nulla assumenda shoreditch et. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo. Leggings occaecat craft beer farm-to-table, raw denim aesthetic synth nesciunt you probably haven't heard of them accusamus labore sustainable VHS.
      </div>
    </div>
  </div>
  <div class="card">
    <div class="card-header" id="headingThree">

        <a class="btn btn-link collapsed d-flex" data-toggle="collapse" data-target="#collapseThree" aria-expanded="false">
          Collapsible Group Item #3<span class="ml-auto"></span>
        </a>

    </div>
    <div id="collapseThree" class="collapse" aria-labelledby="headingThree" data-parent="#accordionExample">
      <div class="card-body">
        Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch. Food truck quinoa nesciunt laborum eiusmod. Brunch 3 wolf moon tempor, sunt aliqua put a bird on it squid single-origin coffee nulla assumenda shoreditch et. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea proident. Ad vegan excepteur butcher vice lomo. Leggings occaecat craft beer farm-to-table, raw denim aesthetic synth nesciunt you probably haven't heard of them accusamus labore sustainable VHS.
      </div>
    </div>
  </div>
</div>
</div>

Demo: https://codepen.io/anon/pen/XoLgbY

View more solutions

32,275

Author by

Vinni

Updated on August 01, 2022

Comments

Vinni almost 2 years

Using Bootstrap 4, I am trying to create a dropdown with caret (Ex: pointing right). On clicking dropdown the caret pointing direction should be changed (Ex: down).

I have got a way to do that

/*Please refer the above link for full code details*/

<a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion" href="#collapseOne">
          Collapsible Group Item #1
</a>

<div id="collapseOne" class="panel-collapse collapse in">
      <div class="panel-body">
        This content is hidden
      </div>
</div>

.css

.panel-heading .accordion-toggle:after {
    font-family: 'Glyphicons Halflings';
    content: "\e114";
    float: right;
    color: grey;
}
.panel-heading .accordion-toggle.collapsed:after {
    content: "\e080";
}

But the catch is, initially all the carets pointing down which should be right

There are other approaches. But I don't want to use JQuery, as my application is angular 4. Would like to avoid JQuery/JS as much as possible.

This is not a duplicate question.

Many thanks in advance...

Vinni over 6 years

it worked for me. Thank you. You are true, its an example for Bootstrap3. In your example, caret is constructed. As you mentioned, it would be great to see an example with font awesome icons
Satheesh Kumar over 6 years

Did you need an example with font awesome icon included?
Vinni over 6 years

Yes..bootstrap 4 with font awesome example. Just a button with toggle right.on clicking, caret pointing down and display some text.would be very helpful..Thank you
Satheesh Kumar over 6 years

Hi, I have updated the code as per your need, and also here I have attached the Codepen link. ( codepen.io/satheesh_design/pen/rGxRBy ) this will be useful for you thanks :)
Vinni over 6 years

Worked. Thank you. :)
Vinni over 6 years

Let us continue this discussion in chat.
Andrew Schultz almost 6 years

Remove the float:right and it will align vertical centre.
GoodJeans over 5 years

do you have a working example with bootstrap 4.1.0 and fontawesome 5.0.0?
Satheesh Kumar over 5 years

@GoodJeans, you use the same structure for font awesome 5.0.0
Zin Min almost 5 years

Can you explain more for non-css developer for aria-expanded code?
lambidu almost 5 years

@ZinMin I've used [aria-expanded] attribute here just as a selector, because it's under Bootstrap's examples and it handles triggering that for you ([aria-expanded]="true|false"). There's no magic under it, it's just an attribute on HTML element. Check this w3schools.com/cssref/css_selectors.asp if you're unfamiliar with CSS selectors. It always helps me :)