Twitter bootstrap 在引导中默认关闭手风琴
我在用手风琴。我希望默认情况下关闭所有面板，但我的面板已开始展开 这是我的代码：Twitter bootstrap 在引导中默认关闭手风琴,twitter-bootstrap,accordion,collapse,Twitter Bootstrap,Accordion,Collapse,我在用手风琴。我希望默认情况下关闭所有面板，但我的面板已开始展开 这是我的代码： ${提案.利息} 我还使用了aria expanded=“false”，但它不起作用 怎么了？这一行似乎是罪魁祸首： <div id="collapse${proposal.propID}" class="panel-collapse collapse in" ... 最近正在使用Bootstrap4，但实际上无法确定“in”类名在哪里（类似问题的多个答案中都提到了它） 经过大量搜索，注意到更新的文档，
${提案.利息}
aria expanded=“false”怎么了？这一行似乎是罪魁祸首：
<div id="collapse${proposal.propID}" class="panel-collapse collapse in" ...
最近正在使用Bootstrap4，但实际上无法确定“in”类名在哪里（类似问题的多个答案中都提到了它） 经过大量搜索，注意到更新的文档，其中显示： collapse插件利用几个类来处理重载： .折叠隐藏内容 .collapse.show显示内容 。折叠在转换开始时添加，在转换结束时删除 示例代码如下所示：
<div id="accordion">
<div class="card">
<div class="card-header" id="headingOne">
<h5 class="mb-0">
<button class="btn btn-link" data-toggle="collapse" data-target="#collapseOne" aria-expanded="true" aria-controls="collapseOne">
Collapsible Group Item #1
</button>
</h5>
</div>
<div id="collapseOne" class="collapse show" aria-labelledby="headingOne" data-parent="#accordion">
<div class="card-body">
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</div>
</div>
</div>
可折叠组项目#1
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<div id="collapseOne" class="collapse show" aria-labelledby="headingOne" data-parent="#accordion">
<div class="accordion" id="accordionExample">
<div class="accordion-item">
<h2 class="accordion-header" id="headingOne">
<button class="accordion-button collapsed bg-light" type="button" data-bs-toggle="collapse" data-bs-target="#collapseOne" aria-expanded="false" aria-controls="collapseOne">
<span class="fw-bold">All Permissions</span><span class="text-notch ms-2">Click to expand</span>
</button>
</h2>
<div id="collapseOne" class="accordion-collapse collapse" aria-labelledby="headingOne" data-bs-parent="#accordionExample">
<div class="accordion-body">
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
</div>
</div>
</div>
</div>
希望这有帮助 您需要做的就是删除主体内容类中的show，它将默认关闭
<div class="accordion" id="accordionExample">
<div class="accordion-item">
<h2 class="accordion-header" id="headingOne">
<button class="accordion-button collapsed bg-light" type="button" data-bs-toggle="collapse" data-bs-target="#collapseOne" aria-expanded="false" aria-controls="collapseOne">
<span class="fw-bold">All Permissions</span><span class="text-notch ms-2">Click to expand</span>
</button>
</h2>
<div id="collapseOne" class="accordion-collapse collapse" aria-labelledby="headingOne" data-bs-parent="#accordionExample">
<div class="accordion-body">
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
<button type="button" class="btn btn-outline-primary mb-3 ms-3">Permission</button>
</div>
</div>
</div>
</div>
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