折叠卡打开，然后立即再次关闭 [英] collapse card opens then immediately closes again

问题描述

我已经阅读了有关导航栏和菜单的涵盖此问题的先前主题，但似乎并不适用.我有一个非常简单的示例:两张卡，默认情况下一张打开，另一张折叠.当我尝试通过按Card 2 Button扩展第二张卡时，它打开了，但随后又立即关闭了.我不确定自己在做什么错.

I've read previous threads that cover this issue for navbars and menus but it does not seem to apply. I have a very simple example: two cards, one opened by default the other collapsed. When I try to expand the second card by pressing Card 2 Button, it opens but then immediately closes again. I am not sure what I'm doing wrong.

此处示例:

<div id="accordion">
    <div class="card">
        <div class="card-header" id="header1">
            <h5 class="mb-0">
                <button class="btn btn-link" data-toggle="collapse" data-target="#collapse1" aria-expanded="true" aria-controls="collapse1">
                    Card 1 Button
                </button>
            </h5>
        </div>
        <div id="collapse1" class="collapse show" aria-labelledby="header1" data-parent="#accordion">
            <div class="card-body">
                Card 1 Content
            </div>
        </div>
    </div>
    <div class="card">
        <div class="card-header" id="header2">
            <h5 class="mb-0">
                <button class="btn btn-link collapsed" data-toggle="collapse" data-target="#collapse2" aria-expanded="false" aria-controls="collapse2">
                    Card 2 Button
                </button>
            </h5>
        </div>
        <div id="collapse2" class="collapse" aria-labelledby="header2" data-parent="#accordion">
            <div class="card-body">
                Card 2 Content
            </div>
        </div>
    </div>
</div>

推荐答案

确定要使用Bootstrap 4吗?

Are you sure you are using Bootstrap 4?

在引导程序3中，其工作方式如下，

In bootstrap 3 it works like following,

您需要使用 in 类而不是 show 使其默认在页面加载时打开.

You need to use in class instead of show to make it open by default at the page load.

<div id="collapse1" class="collapse in" aria-labelledby="header1" data-parent="#accordion">
            <div class="card-body">
                Card 1 Content
            </div>
        </div>

jsFiddle https://jsfiddle.net/0uk0xuvd/

检查您要导入的引导程序版本.

Check your bootstrap version that your are importing.

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