javascript - Bootstrap 可折叠面板 - 从打开的部分开始

Question

我将此标记用于 Bootstrap Accordion /可折叠面板。如何在页面加载时打开而不是折叠我的所有部分？

<div class="panel-group" id="accordion" role="tablist" aria-multiselectable="true">
    <div class="panel panel-default">
        <div class="panel-heading" role="tab" id="headingOne">
            <h4 class="panel-title">
                <a class="collapsed accordion-toggle" role="button" data-toggle="collapse" data-parent="#accordion" href="#collapseOne" aria-expanded="false" aria-controls="collapseOne"> Header </a>
            </h4>
        </div>
        <div id="collapseOne" class="panel-collapse collapse" role="tabpanel" aria-labelledby="headingOne">
            <div class="panel-body">
                collapsible stuff
            </div>
        </div>
    </div>
</div>

Answer 1

您只需将类名 in 添加到 div.collapse 元素即可。

<div class="panel-group" id="accordion" role="tablist" aria-multiselectable="true">
    <div class="panel panel-default">
        <div class="panel-heading" role="tab" id="headingOne">
            <h4 class="panel-title">
                <a class="collapsed accordion-toggle" role="button" data-toggle="collapse" data-parent="#accordion" href="#collapseOne" aria-expanded="false" aria-controls="collapseOne"> Header </a>
            </h4>
        </div>
        <div id="collapseOne" class="panel-collapse collapse in" role="tabpanel" aria-labelledby="headingOne">
            <div class="panel-body">
                collapsible stuff
            </div>
        </div>
    </div>
</div>

http://www.bootply.com/Gld6UPkkuL

<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet"/>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div class="panel-group" id="accordion" role="tablist" aria-multiselectable="true">
        <div class="panel panel-default">
            <div class="panel-heading" role="tab" id="headingOne">
                <h4 class="panel-title">
                    <a class="collapsed accordion-toggle" role="button" data-toggle="collapse" data-parent="#accordion" href="#collapseOne" aria-expanded="false" aria-controls="collapseOne"> Header </a>
                </h4>
            </div>
            <div id="collapseOne" class="panel-collapse collapse in" role="tabpanel" aria-labelledby="headingOne">
                <div class="panel-body">
                    collapsible stuff
                </div>
            </div>
        </div>
    </div>