Bootstrap手风琴选项卡不折叠

Question

我正在使用Bootstrap手风琴，一次只需要打开一个标签即可。 有趣的是，每当两个选项卡彼此相邻时，其中一个不会关闭。 例如，如果第一个已经打开，然后尝试打开第三个，则不会发生这种情况。 为什么会这样呢？

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                <div class="panel-group" id="accordion" role="tablist" aria-multiselectable="true"><!-- begin accordion -->
              <div class="panel panel-default">
                <div class="panel-heading" role="tab" id="headingOne">
                  <h4 class="panel-title">
                    <a data-toggle="collapse" data-parent="#accordion" href="#collapseOne" aria-expanded="true" aria-controls="collapseOne">
                      <span class="glyphicon glyphicon-plus"></span> Collapsible Group Item #1
                    </a>
                  </h4>
                </div>
                <div id="collapseOne" class="panel-collapse collapse in" role="tabpanel" aria-labelledby="headingOne">
                  <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" role="tab" id="headingTwo">
                  <h4 class="panel-title">
                    <a class="collapsed" data-toggle="collapse" data-parent="accordion" href="#collapseTwo" aria-expanded="false" aria-controls="collapseTwo">
                      <span class="glyphicon glyphicon-plus"></span> Collapsible Group Item #2
                    </a>
                  </h4>
                </div>
                <div id="collapseTwo" class="panel-collapse collapse" role="tabpanel" aria-labelledby="headingTwo">
                  <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" role="tab" id="headingThree">
                  <h4 class="panel-title">
                    <a class="collapsed" data-toggle="collapse" data-parent="#accordion" href="#collapseThree" aria-expanded="false" aria-controls="collapseThree">
                      <span class="glyphicon glyphicon-plus"></span> Collapsible Group Item #3
                    </a>
                  </h4>
                </div>
                <div id="collapseThree" class="panel-collapse collapse" role="tabpanel" aria-labelledby="headingThree">
                  <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><!-- end accordion -->

Answer 1

您在第二个标签上缺少# （ id标识符）

data-parent="accordion"应该是data-parent="#accordion"