Bootstrap手风琴 - 开始全部关闭

Question

所以我的页面上有一个bootstrap风格的手风琴 - 但是一开始,第一个面板是打开的.如何才能使它在加载页面时全部关闭？

任何帮助将非常感激!非常感谢!

<div class="panel-group" id="accordion">
    <div class="panel panel-default">
        <div class="panel-heading">
            <h4 class="panel-title">
                <a class="accordion-toggle text-normalize" data-toggle="collapse" data-parent="#accordion" href="#panel1"><i class="fa fa-minus text-primary"></i> Overview</a>
            </h4>
        </div>
        <div id="panel1" class="panel-collapse collapse in">
            <div class="panel-body">Contents panel 1</div>
        </div>
    </div>
    <div class="panel panel-default">
        <div class="panel-heading">
            <h4 class="panel-title">
                <a class="accordion-toggle text-normalize" data-toggle="collapse" data-parent="#accordion" href="#panel2"><i class="fa fa-plus text-primary"></i> Utilities</a>
            </h4>
        </div>
        <div id="panel2" class="panel-collapse collapse">
            <div class="panel-body">Contents panel 2</div>
        </div>
    </div>
    <div class="panel panel-default">
        <div class="panel-heading">
            <h4 class="panel-title">
                <a class="accordion-toggle text-normalize" data-toggle="collapse" data-parent="#accordion" href="#panel3"><i class="fa fa-plus text-primary"></i> Organization</a>
            </h4>
        </div>
        <div id="panel3" class="panel-collapse collapse">
            <div class="panel-body">Contents panel 3</div>
        </div>
    </div>
    <div class="panel panel-default">
        <div class="panel-heading">
            <h4 class="panel-title">
                <a class="accordion-toggle text-normalize" data-toggle="collapse" data-parent="#accordion" href="#panel4"><i class="fa fa-plus text-primary"></i> Integrations</a>
            </h4>
        </div>
        <div id="panel4" class="panel-collapse collapse">
            <div class="panel-body">Contents panel 3</div>
        </div>
    </div>
    <div class="panel panel-default">
        <div class="panel-heading">
            <h4 class="panel-title">
                <a class="accordion-toggle text-normalize" data-toggle="collapse" data-parent="#accordion" href="#panel5"><i class="fa fa-plus text-primary"></i> Essentials</a>
            </h4>
        </div>
        <div id="panel5" class="panel-collapse collapse">
            <div class="panel-body">Contents panel 3</div>
        </div>
    </div>
    <div class="panel panel-default">
        <div class="panel-heading">
            <h4 class="panel-title">
                <a class="accordion-toggle text-normalize" data-toggle="collapse" data-parent="#accordion" href="#panel6"><i class="fa fa-plus text-primary"></i> Sales</a>
            </h4>
        </div>
        <div id="panel6" class="panel-collapse collapse">
            <div class="panel-body">Contents panel 3</div>
        </div>
    </div>
    <div class="panel panel-default">
        <div class="panel-heading">
            <h4 class="panel-title">
                <a class="accordion-toggle text-normalize" data-toggle="collapse" data-parent="#accordion" href="#panel7"><i class="fa fa-plus text-primary"></i> Support</a>
            </h4>
        </div>
        <div id="panel7" class="panel-collapse collapse">
            <div class="panel-body">Contents panel 3</div>
        </div>
    </div>
    <div class="panel panel-default">
        <div class="panel-heading">
            <h4 class="panel-title">
                <a class="accordion-toggle text-normalize" data-toggle="collapse" data-parent="#accordion" href="#panel8"><i class="fa fa-plus text-primary"></i> Projects</a>
            </h4>
        </div>
        <div id="panel8" class="panel-collapse collapse">
            <div class="panel-body">Contents panel 3</div>
        </div>
    </div>
</div>

Answer 1

对于Bootstrap 5，您还需要折叠按钮，否则虽然正文不会显示，但标题仍会突出显示，并且指示卡已打开的图标仍会显示。

默认为；

<button class="accordion-button" type="button" data-bs-toggle="collapse" data-bs-target="#panelsStayOpen-collapseOne" aria-expanded="true" aria-controls="panelsStayOpen-collapseOne">
        Accordion Item #1
</button>

您需要添加collapsed到按钮并告诉aria它不会像这样展开；

<button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#panelsStayOpen-collapseOne" aria-expanded="false" aria-controls="panelsStayOpen-collapseOne">
        Heading Text
</button>

然后身体就可以像平常一样处理show了class="accordion-collapse collapse show"

<div id="panelsStayOpen-collapseOne" class="accordion-collapse collapse" aria-labelledby="panelsStayOpen-headingOne">
 <div class="accordion-body">
  Body Text
 </div>
</div>

Answer 2

只需.in从panel1中删除即可.

<div id="panel1" class="panel-collapse collapse">
   <div class="panel-body">Contents panel 1</div>
</div>

Answer 3

引导程序 5：

添加类collapsed到accordion-button

<button class="accordion-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseOne" aria-expanded="false" aria-controls="collapseOne">
    Accordion Item
</button>

show从中删除班级accordion-collapse

<div id="collapseOne" class="accordion-collapse collapse" aria-labelledby="headingOne" data-bs-parent="#accordionExample">
    <div class="accordion-body">content...</div>
</div>

Answer 4

Bootstrap 4和4+ show从中删除类collapse show

<div class="collapse">
    <div class="card-body"></div>
</div>