Изменить значок в Bootstrap Collapse с помощью Jquery

Question

У меня есть этот аккордеон, который я сделал:

<div id="accordion">
 <div class="card">
   <h5 class="mb-0">
    <i class="fas fa-chevron-down"></i> <button class="btn btn-link" data-toggle="collapse" data-target="#collapseOne" aria-expanded="false" aria-controls="collapseOne" style="color: black;">Here's the question </button></h5>
 <div id="collapseOne" class="collapse" aria-labelledby="headingOne" data-parent="#accordion">
  <div class="card-body">
    Here's the collapse answer!
 </div>
   </div>
    </div>
</div>

Я новичок в Jquery, так как мой код jquery будет выглядеть так: когда он свернут, я хочу изменить fas fa-чеврон-вниз с фас фа-шеврон-вверх.

Спасибо!

Answer 1

Для этого вы можете позаботиться о своей работе с CSS.

Используя панель начальной загрузки, вы можете выполнять потрясающие шрифты определения при включении или выключении аккордеона, как в следующем примере:

.panel-title>a {


display: block;
    position: relative;
}

.panel-title>a:after {
    content: "\f078";
    /* fa-chevron-down */
    font-family: 'FontAwesome';
    position: absolute;
    right: 0;
}

.panel-title>a[aria-expanded="true"]:after {
    content: "\f077";
    /* fa-chevron-up */
}

@import url('https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css');
@import url('https://maxcdn.bootstrapcdn.com/font-awesome/4.6.1/css/font-awesome.min.css');
.panel-title>a {
  display: block;
  position: relative;
}

.panel-title>a:after {
  content: "\f078";
  /* fa-chevron-down */
  font-family: 'FontAwesome';
  position: absolute;
  right: 0;
}

.panel-title>a[aria-expanded="true"]:after {
  content: "\f077";
  /* fa-chevron-up */
}

<div class="panel-group" id="accordion" role="tablist" aria-multiselectable="true">
  <div class="panel panel-default">
    <div class="panel-heading" role="tab" id="heading-1">
      <h4 class="panel-title">
        <a role="button" data-toggle="collapse" data-parent="#accordion" href="#collapse-1" aria-expanded="false" aria-controls="collapse-1">
          Item 1
        </a>
      </h4>
    </div>
    <div id="collapse-1" class="panel-collapse collapse" role="tabpanel" aria-labelledby="heading-1">
      <div class="panel-body">

        <div class="panel-group" id="accordion-1" role="tablist" aria-multiselectable="true">
          <div class="panel panel-default">
            <div class="panel-heading" role="tab" id="heading-1-1">
              <h4 class="panel-title">
                <a role="button" data-toggle="collapse" data-parent="#accordion-1" href="#collapse-1-1" aria-expanded="false" aria-controls="collapse-1-1">
                  Item 1 > 1
                </a>
              </h4>
            </div>
            <div id="collapse-1-1" class="panel-collapse collapse" role="tabpanel" aria-labelledby="heading-1-1">
              <div class="panel-body">

                <div class="panel-group" id="accordion-1-1" role="tablist" aria-multiselectable="true">
                  <div class="panel panel-default">
                    <div class="panel-heading" role="tab" id="heading-1-1-1">
                      <h4 class="panel-title">
                        <a role="button" data-toggle="collapse" data-parent="#accordion-1-1" href="#collapse-1-1-1" aria-expanded="false" aria-controls="collapse-1-1-1">
                            Item 1 > 1 > 1
                          </a>
                      </h4>
                    </div>
                    <div id="collapse-1-1-1" class="panel-collapse collapse" role="tabpanel" aria-labelledby="heading-1-1-1">
                      <div class="panel-body">
                        Text 1 > 1 > 1
                      </div>
                    </div>
                  </div>
                  <div class="panel panel-default">
                    <div class="panel-heading" role="tab" id="heading-1-1-2">
                      <h4 class="panel-title">
                        <a class="collapsed" role="button" data-toggle="collapse" data-parent="#accordion-1-1" href="#collapse-1-1-2" aria-expanded="false" aria-controls="collapse-1-1-2">
                            Item 1 > 1 > 2
                          </a>
                      </h4>
                    </div>
                    <div id="collapse-1-1-2" class="panel-collapse collapse" role="tabpanel" aria-labelledby="heading-1-1-2">
                      <div class="panel-body">
                        Text 1 > 1 > 2
                      </div>
                    </div>
                  </div>
                  <div class="panel panel-default">
                    <div class="panel-heading" role="tab" id="heading-1-1-3">
                      <h4 class="panel-title">
                        <a class="collapsed" role="button" data-toggle="collapse" data-parent="#accordion-1-1" href="#collapse-1-1-3" aria-expanded="false" aria-controls="collapse-1-1-3">
                            Item 1 > 1 > 3
                          </a>
                      </h4>
                    </div>
                    <div id="collapse-1-1-3" class="panel-collapse collapse" role="tabpanel" aria-labelledby="heading-1-1-3">
                      <div class="panel-body">
                        Text 1 > 1 > 3
                      </div>
                    </div>
                  </div>
                </div>

              </div>
            </div>
          </div>
          <div class="panel panel-default">
            <div class="panel-heading" role="tab" id="heading-1-2">
              <h4 class="panel-title">
                <a class="collapsed" role="button" data-toggle="collapse" data-parent="#accordion-1" href="#collapse-1-2" aria-expanded="false" aria-controls="collapse-1-2">
                  Item 1 > 2
                </a>
              </h4>
            </div>
            <div id="collapse-1-2" class="panel-collapse collapse" role="tabpanel" aria-labelledby="heading-1-2">
              <div class="panel-body">
                Text 1 > 2
              </div>
            </div>
          </div>
        </div>

      </div>
    </div>
  </div>
  <div class="panel panel-default">
    <div class="panel-heading" role="tab" id="heading-2">
      <h4 class="panel-title">
        <a class="collapsed" role="button" data-toggle="collapse" data-parent="#accordion" href="#collapse-2" aria-expanded="false" aria-controls="collapse-2">
          Item 2
        </a>
      </h4>
    </div>
    <div id="collapse-2" class="panel-collapse collapse" role="tabpanel" aria-labelledby="heading-2">
      <div class="panel-body">
        Text 2
      </div>
    </div>
  </div>
  <div class="panel panel-default">
    <div class="panel-heading" role="tab" id="heading-3">
      <h4 class="panel-title">
        <a class="collapsed" role="button" data-toggle="collapse" data-parent="#accordion" href="#collapse-3" aria-expanded="false" aria-controls="collapse-3">
          Item 3
        </a>
      </h4>
    </div>
    <div id="collapse-3" class="panel-collapse collapse" role="tabpanel" aria-labelledby="heading-3">
      <div class="panel-body">
        Text 3
      </div>
    </div>
  </div>
</div>

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>

Answer 2

JS

let wrapper = $('#accordion');
$('.btn-link').on('click', function () {
let status = $(this).attr('aria-expanded'); // code is useless here. Just to check if collapse open or close
  wrapper.find('.fa-chevron-down').removeClass('fa-chevron-down').addClass('fa-chevron-up');
});

HTML

<div id="accordion">
 <div class="card">
   <h5 class="mb-0">
    <i class="fas fa-chevron-down"></i> <button class="btn btn-link" data-toggle="collapse" data-target="#collapseOne" aria-expanded="false" aria-controls="collapseOne" style="color: black;">Here's the question </button></h5>
 <div id="collapseOne" class="collapse" aria-labelledby="headingOne" data-parent="#accordion">
  <div class="card-body">
    Here's the collapse answer!
 </div>
   </div>
    </div>
</div>

Answer 3

Я думаю, что вы ищете подобное решение.

 $('.panel-collapse').on('show.bs.collapse', function () {
    $(this).siblings('.panel-       heading').addClass('active');
  });

  $('.panel-collapse').on('hide.bs.collapse', function () {
    $(this).siblings('.panel-heading').removeClass('active');
  });

body{
  padding:50px;
  background:#fff;
}
.wrapper{
  width:70%;
}
@media(max-width:992px){
 .wrapper{
  width:100%;
} 
}
.panel-heading {
  padding: 0;
	border:0;
}
.panel-title>a, .panel-title>a:active{
	display:block;
	padding:15px;
  color:#555;
  font-size:16px;
  font-weight:bold;
	text-transform:uppercase;
	letter-spacing:1px;
  word-spacing:3px;
	text-decoration:none;
}
.panel-heading  a:before {
   font-family: 'Glyphicons Halflings';
   content: "\e114";
   float: right;
   transition: all 0.5s;
}
.panel-heading.active a:before {
	-webkit-transform: rotate(180deg);
	-moz-transform: rotate(180deg);
	transform: rotate(180deg);
} 

<!-- Latest compiled and minified Bootstrap CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.min.css">

<div class = "container">

  
  <div class="panel-group" id="accordion">
  <div class="panel panel-default">
    <div class="panel-heading">
      <h4 class="panel-title">
        <a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion" href="#collapseOne">
          Collapsible Group Item #1
        </a>
      </h4>
    </div>
    <div id="collapseOne" class="panel-collapse collapse in">
      <div class="panel-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="panel panel-default">
    <div class="panel-heading">
      <h4 class="panel-title">
        <a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion" href="#collapseTwo">
          Collapsible Group Item #2
        </a>
      </h4>
    </div>
    <div id="collapseTwo" class="panel-collapse collapse">
      <div class="panel-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="panel panel-default">
    <div class="panel-heading">
      <h4 class="panel-title">
        <a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion" href="#collapseThree">
          Collapsible Group Item #3
        </a>
      </h4>
    </div>
    <div id="collapseThree" class="panel-collapse collapse">
      <div class="panel-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> <!-- end container -->

<!-- Latest compiled and minified JavaScript -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/js/bootstrap.min.js"></script>