如何向嵌套的引导手风琴添加加减号

Question

这个问题是有问题的 cmets 的连续性 How to add plus minus symbol to a bootstrap accordion

如何为嵌套的引导手风琴添加加号和减号并使其正常工作？目前，它们没有按预期切换。

这是我尝试过的：http://jsfiddle.net/4t1qs0uv/2/

HTML：

<div class="panel-group" id="accordion1">
    <div class="panel panel-default">
        <div class="panel-heading">
            <h4 class="panel-title"> 
                <a data-toggle="collapse" data-parent="#accordion" href="#livingroom-10" class="collapsed">Living Room</a>
            </h4>
        </div>
        <div id="livingroom-10" class="panel-collapse collapse" style="height: 0px;">
            <div class="panel-body">
                <div class="panel-group" id="accordion2">
                    <div class="panel panel-default">
                        <div class="panel-heading">
                            <h4 class="panel-title">
                                <a data-toggle="collapse" data-parent="#accordion" href="#add101">
                                    Air Condition
                                </a>
                            </h4>
                        </div>
                        <div id="add101" class="panel-collapse collapse">
                            <div class="panel-body">
                                <form class="form-inline" role="form">
                                    <div class="form-group">
                                        <label for="usageperday">Usage Per Day</label><br>
                                        <input type="text" class="form-control" name="usageperday-1.0.1" placeholder="Usage Per Day" value="8">
                                    </div>
                                    <div class="form-group">
                                        <label for="numbermonth">Number of days used per month</label><br>
                                        <input type="text" class="form-control" name="numbermonth-1.0.1" placeholder="Number of days used per month" value="30">
                                    </div>
                                    <div class="form-group">
                                        <label for="watts">Watts</label><br>
                                        <input type="text" class="form-control" name="watts-1.0.1" placeholder="Watts" value="1500">
                                    </div>
                                </form>
                            </div>
                        </div>
                    </div>
                </div>
                <div class="panel-group" id="accordion2">
                    <div class="panel panel-default">
                        <div class="panel-heading">
                            <h4 class="panel-title">
                                <a data-toggle="collapse" data-parent="#accordion" href="#add102">
                                    Fan
                                </a>
                            </h4>
                        </div>
                        <div id="add102" class="panel-collapse collapse in">
                            <div class="panel-body">
                                <form class="form-inline" role="form">
                                    <div class="form-group">
                                        <label for="usageperday">Usage Per Day</label><br>
                                        <input type="text" class="form-control" name="usageperday-1.0.2" placeholder="Usage Per Day" value="8">
                                    </div>
                                    <div class="form-group">
                                        <label for="numbermonth">Number of days used per month</label><br>
                                        <input type="text" class="form-control" name="numbermonth-1.0.2" placeholder="Number of days used per month" value="30">
                                    </div>
                                    <div class="form-group">
                                        <label for="watts">Watts</label><br>
                                        <input type="text" class="form-control" name="watts-1.0.2" placeholder="Watts" value="90">
                                    </div>
                                </form>
                            </div>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
    <div class="panel panel-default">
        <div class="panel-heading">
            <h4 class="panel-title">
                <a data-toggle="collapse" data-parent="#accordion" href="#bathroom-20" class="collapsed">
                    Bathroom
                </a>
            </h4>
        </div>
        <div id="bathroom-20" class="panel-collapse collapse" style="height: 0px;">
            <div class="panel-body">
                <div class="panel-group" id="accordion2">
                    <div class="panel panel-default">
                        <div class="panel-heading">
                            <h4 class="panel-title">
                                <a data-toggle="collapse" data-parent="#accordion" href="#add2029">
                                    Router
                                </a>
                            </h4>
                        </div>
                        <div id="add2029" class="panel-collapse collapse">
                            <div class="panel-body">
                                <form class="form-inline" role="form">
                                    <div class="form-group">
                                        <label for="usageperday">Usage Per Day</label><br>
                                        <input type="text" class="form-control" name="usageperday-2.0.29" placeholder="Usage Per Day" value="24">
                                    </div>
                                    <div class="form-group">
                                        <label for="numbermonth">Number of days used per month</label><br>
                                        <input type="text" class="form-control" name="numbermonth-2.0.29" placeholder="Number of days used per month" value="30">
                                    </div>
                                    <div class="form-group">
                                        <label for="watts">Watts</label><br>
                                        <input type="text" class="form-control" name="watts-2.0.29" placeholder="Watts" value="10">
                                    </div>
                                </form>
                            </div>
                        </div>
                    </div>
                </div>
                <div class="panel-group" id="accordion2">
                    <div class="panel panel-default">
                        <div class="panel-heading">
                            <h4 class="panel-title">
                                <a data-toggle="collapse" data-parent="#accordion" href="#add2030">
                                    Scanner
                                </a>
                            </h4>
                        </div>
                        <div id="add2030" class="panel-collapse collapse">
                            <div class="panel-body">
                                <form class="form-inline" role="form">
                                    <div class="form-group">
                                        <label for="usageperday">Usage Per Day</label><br>
                                        <input type="text" class="form-control" name="usageperday-2.0.30" placeholder="Usage Per Day" value="0.1">
                                    </div>
                                    <div class="form-group">
                                        <label for="numbermonth">Number of days used per month</label><br>
                                        <input type="text" class="form-control" name="numbermonth-2.0.30" placeholder="Number of days used per month" value="2">
                                    </div>
                                    <div class="form-group">
                                        <label for="watts">Watts</label><br>
                                        <input type="text" class="form-control" name="watts-2.0.30" placeholder="Watts" value="20">
                                    </div>
                                </form>
                            </div>
                        </div>
                    </div>
                </div>
            </div>
        </div>
    </div>
</div>

JavaScript：

jQuery(function ($) {
    var $active = $('#accordion1 .panel-collapse.in').prev().addClass('active');
    $active.find('a').append('<span class="glyphicon glyphicon-minus pull-right"></span>');
    $('#accordion1 .panel-heading').not($active).find('a').prepend('<span class="glyphicon glyphicon-plus pull-right"></span>');
    $('#accordion1').on('show.bs.collapse', function (e) {
        $('#accordion1 .panel-heading.active').removeClass('active').find('.glyphicon').toggleClass('glyphicon-plus glyphicon-minus');
        $(e.target).prev().addClass('active').find('.glyphicon').toggleClass('glyphicon-plus glyphicon-minus');
    });
    $('#accordion1').on('hide.bs.collapse', function (e) {
        $(e.target).prev().removeClass('active').find('.glyphicon').removeClass('glyphicon-minus').addClass('glyphicon-plus');
    });

    var $active2 = $('#accordion2 .panel-collapse.in').prev().addClass('active');
    $active2.find('a').append('<span class="glyphicon glyphicon-minus pull-right"></span>');
    $('#accordion2 .panel-heading').not($active2).find('a').prepend('<span class="glyphicon glyphicon-plus pull-right"></span>');
    $('#accordion2').on('show.bs.collapse', function (e) {
        $('#accordion2 .panel-heading.active').removeClass('active').find('.glyphicon').toggleClass('glyphicon-plus glyphicon-minus');
        $(e.target).prev().addClass('active').find('.glyphicon').toggleClass('glyphicon-plus glyphicon-minus');
    });
    $('#accordion2').on('hide.bs.collapse', function (e) {
        $(e.target).prev().removeClass('active').find('.glyphicon').removeClass('glyphicon-minus').addClass('glyphicon-plus');
    });

});

Answer 1

如果您使用正确的样式和唯一 ID 实现面板组，您也可以使用 CSS 在嵌套的切换按钮上添加指示器。不需要新的 JQuery：

演示：http://jsbin.com/zixeza/1/

CSS：

.panel-group .panel-heading a:after {
  content: '-';
  position: absolute;
  right: 20px;
  top:5px;
}
.panel-group .panel-heading a.collapsed:after {
  content: '+';
}

HTML：

<div class="container">

         <div class="panel-group" id="accordion">
         
            <div class="panel panel-default">
               <div class="panel-heading">
                  <h4 class="panel-title">
                     <a data-toggle="collapse" data-parent="#accordion" href="#collapseOne">
                     Collapsible Group Item #1
                     </a>
                  </h4>
               </div><!--/.panel-heading -->
               <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><!--/.panel-body -->
               </div><!--/.panel-collapse -->
            </div><!-- /.panel -->
            
            <div class="panel panel-default">
               <div class="panel-heading">
                  <h4 class="panel-title">
                     <a class="collapsed" data-toggle="collapse" data-parent="#accordion" href="#collapseTwo">
                     Collapsible Group Item #2
                     </a>
                  </h4>
               </div><!--/.panel-heading -->
               <div id="collapseTwo" class="panel-collapse collapse">
                  <div class="panel-body">

                    <!-- nested -->


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


<!-- nested -->
                    
                     
                  </div><!--/.panel-body -->
               </div><!--/.panel-collapse -->
            </div><!-- /.panel -->
            
            <div class="panel panel-default">
               <div class="panel-heading">
                  <h4 class="panel-title">
                     <a class="collapsed" data-toggle="collapse" data-parent="#accordion" href="#collapseThree">
                     Collapsible Group Item #3
                     </a>
                  </h4>
               </div><!--/.panel-heading -->
               <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><!--/.panel-body -->
               </div><!--/.panel-collapse -->
            </div><!-- /.panel -->
         </div><!-- /.panel-group -->

</div><!-- /.container -->  

Answer 2

与我对 Font Awesome Icon（fa-plus 和 fa-minus）所做的相同解决方案，您也可以使用 fa-chevron-down 和 fa-chevron-up。

CSS

.panel-group .panel-heading a:before {
    font-family: fontAwesome;
    position: absolute;
    color: #fff;
    font-size: 20px;
    top: 8px;
    right: 10px;
}
.panel-group .panel-heading a:before {
    content: "\f068";
}
.panel-group .panel-heading a.collapsed:before {
    content: "\f067";
}

unicode inside content: "\unicode" 可以在 fontAwesome 中的每个图标下找到，或者转到项目中的 font-awesome.css。 http://fortawesome.github.io/Font-Awesome/icon/chevron-down/

HTML

<div class="panel-group" id="accordion">

    <div class="panel panel-default">
       <div class="panel-heading">
          <h4 class="panel-title">
             <a data-toggle="collapse" data-parent="#accordion" href="#collapseOne">
             Collapsible Group Item #1
             </a>
          </h4>
       </div><!--/.panel-heading -->
       <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><!--/.panel-body -->
       </div><!--/.panel-collapse -->
    </div><!-- /.panel -->

    <div class="panel panel-default">
       <div class="panel-heading">
          <h4 class="panel-title">
             <a class="collapsed" data-toggle="collapse" data-parent="#accordion" href="#collapseTwo">
             Collapsible Group Item #2
             </a>
          </h4>
       </div><!--/.panel-heading -->
       <div id="collapseTwo" class="panel-collapse collapse">
          <div class="panel-body">

            <!-- nested -->

         <div class="panel-group" id="nested">
            <div class="panel panel-default">
               <div class="panel-heading">
                  <h4 class="panel-title">
                     <a data-toggle="collapse" data-parent="#nested" href="#nested-collapseOne">
                     Collapsible Group Item #1
                     </a>
                  </h4>
               </div><!--/.panel-heading -->
               <div id="nested-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><!--/.panel-body -->
               </div><!--/.panel-collapse --> 
            </div><!-- /.panel --> 

            <div class="panel panel-default">
               <div class="panel-heading">
                  <h4 class="panel-title">
                     <a class="collapsed" data-toggle="collapse" data-parent="#nested" href="#nested-collapseTwo">
                     Collapsible Group Item #2
                     </a>
                  </h4>
               </div><!--/.panel-heading -->
               <div id="nested-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><!--/.panel-body -->
               </div><!--/.panel-collapse -->
            </div><!-- /.panel -->

            <div class="panel panel-default">
               <div class="panel-heading">
                  <h4 class="panel-title">
                     <a class="collapsed" data-toggle="collapse" data-parent="#nested" href="#nested-collapseThree">
                     Collapsible Group Item #3
                     </a>
                  </h4>
               </div><!--/.panel-heading -->
               <div id="nested-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><!--/.panel-body -->
               </div><!--/.panel-collapse -->
            </div><!-- /.panel -->
         </div><!-- /.panel-group -->


          </div><!--/.panel-body -->
       </div><!--/.panel-collapse -->
    </div><!-- /.panel -->

    <div class="panel panel-default">
       <div class="panel-heading">
          <h4 class="panel-title">
             <a class="collapsed" data-toggle="collapse" data-parent="#accordion" href="#collapseThree">
             Collapsible Group Item #3
             </a>
          </h4>
       </div><!--/.panel-heading -->
       <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><!--/.panel-body -->
       </div><!--/.panel-collapse -->
    </div><!-- /.panel -->

 </div><!-- /.panel-group -->