アコーディオンのトグルが意図

Question

HTMLとして働いていない

<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"> 
        Accordion 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> 

CSS

.panel-heading .accordion-toggle:after{ 
font-family:$font-awesome; content:'\f107'; 9 
} 

.panel-heading .accordion-toggle.collapsed:after{ 
font-family:$font-awesome; content:'\f106'; 
} 

.accordion-トグルを崩壊しました。クリックしてアコーディオンを折りたたむと、アイコンが上向きのアイコンに変わります。私はそれが上記のコードが行うことだと確信していますが、逆になっているようです。内容を入れ替えると、アコーディオンがまだ折りたたまれていないときに上のアイコンが表示されるだけなので、うまくいきません。

Answer 1

あなたのCSSに問題があります。

.panel-heading .accordion-toggle:after { 
 
    font-family: FontAwesome; 
 
    content: '\f107'; 
 
} 
 

 
.panel-heading .accordion-toggle.collapsed:after { 
 
    font-family: FontAwesome; 
 
    content: '\f106'; 
 
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> 
 
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous"> 
 
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script> 
 
<link href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css" rel="stylesheet" integrity="sha384-wvfXpqpZZVQGK6TAh5PVlGOfQNHSoD2xbE+QkPxCAFlNEevoEH3Sl0sibVcOQVnN" crossorigin="anonymous"> 
 
<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"> 
 
        Accordion 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>

： font-family:FontAwesome;

チェックするために、以下のスニペットをfont-family:$font-awesomeを交換してください