如何在 Twitter bootstrap 4 中显示一个可折叠项目？

Question

各位程序员朋友们。

以下是我的部分代码。实际上，它是我侧边菜单的一部分。我的代码问题是许多 Bootstrap 用户运行遇到的常见问题。我只希望我的一个可折叠项目在单击后显示，而另一个先前打开的项目被关闭。提前致谢。

<ul>
    <li class="link">
        <a href="index.php">
            <span class="fas fa-home" aria-hidden="true"></span>
            <span class="d-none d-sm-inline">Home</span>
        </a>
    </li>

    <li class="link">
        <a href="#collapse-post"  data-toggle="collapse" aria-expanded="false" aria-controls="collapse-post">
            <span class="fas fa-paper-plane" aria-hidden="true"></span>
            <span class="d-none d-sm-inline">Operation</span>
        </a>
        <ul class="collapse collapse-li-border" id="collapse-post">
            <li><a href="#">Delete</a></li>
            <li><a href="#">Create</a></li>

        </ul>
    </li>


    <li class="link">
        <a href="#collapse-edari"  data-toggle="collapse" aria-expanded="false" aria-controls="collapse-edari">
            <span class="fas fa-bullseye" aria-hidden="true"></span>
            <span>Office</span>
        </a>
        <ul class="collapse collapse-li-border" id="collapse-edari">
            <li><a href="#">Word</a></li>
            <li><a href="#">Access</a></li>
            <li><a href="#">Powerpoint</a></li>

        </ul>
    </li>
</ul>

Answer 1

所以..在您的示例中，您应该更仔细地遵循 dropdown component of bootstrap 的文档。在这些情况下并没有完全使用折叠组件。我对您的代码进行了一些更改，但您需要根据您的具体情况进行调整。

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"></script>

<link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" rel="stylesheet"/>

<ul>
    <li class="link">
        <a href="index.php">
            <span class="fas fa-home" aria-hidden="true"></span>
            <span>Home</span>
        </a>
    </li>

    <li class="link">
        <a href="#" class="dropdown-toggle" data-toggle="dropdown" aria-expanded="false" aria-haspopup="true">
            <span class="fas fa-paper-plane" aria-hidden="true"></span>
            <span>Operation</span>
        </a>
        <ul class="dropdown-menu" id="collapse-post">
            <li class="dropdown-item"><a href="#">Delete</a></li>
            <li class="dropdown-item"><a href="#">Create</a></li>

        </ul>
    </li>


    <li class="link">
        <a href="#" class="dropdown-toggle" data-toggle="dropdown" aria-expanded="false" aria-haspopup="true">
            <span class="fas fa-bullseye" aria-hidden="true"></span>
            <span>Office</span>
        </a>
        <ul class="dropdown-menu" id="collapse-edari">
            <li class="dropdown-item"><a href="#">Word</a></li>
            <li class="dropdown-item"><a href="#">Access</a></li>
            <li class="dropdown-item"><a href="#">Powerpoint</a></li>

        </ul>
    </li>
</ul>

如何在 Twitter bootstrap 4 中显示一个可折叠项目？

How can I show one collapsible item in twitter bootstrap 4?

css

collapse

twitter-bootstrap