Zusammenklappbare Elemente sind nützlich, wenn Sie große Mengen an Inhalten ein- und ausblenden möchten:
<button data-bs-toggle="collapse" data-bs-target="#demo">Collapsible</button>
<div id="demo" class="collapse">
Lorem ipsum dolor text....
</div>Probieren Sie es selbst aus →
<!DOCTYPE html>
<html lang="en">
<head>
<title>Bootstrap Example</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>
<div class="container mt-3">
<h2>Simple Collapsible</h2>
<p>Click on the button to toggle between showing and hiding content.</p>
<button type="button" class="btn btn-primary" data-bs-toggle="collapse" data-bs-target="#demo">Simple collapsible</button>
<div id="demo" class="collapse">
Lorem ipsum dolor sit amet, consectetur adipisicing elit,
sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam,
quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.
</div>
</div>
</body>
</html>
Die Klasse .collapse gibt ein reduzierbares Element an (in unserem Beispiel ein <div>); Dies ist der Inhalt, der mit einem Klick auf eine Schaltfläche angezeigt oder ausgeblendet wird.
Um den reduzierbaren Inhalt zu steuern (ein-/ausblenden), fügen Sie das Attribut data-bs-toggle="collapse" zu einem <a>- oder <button>-Element hinzu. Fügen Sie dann das Attribut data-bs-target="#id" hinzu, um die Schaltfläche mit dem reduzierbaren Inhalt (<div id="demo">) zu verbinden.
Hinweis: Für <a>-Elemente können Sie das Attribut href anstelle des Attributs data- verwenden. bs-target-Attribut:
<a href="#demo" data-bs-toggle="collapse">Collapsible</a>
<div id="demo" class="collapse">
Lorem ipsum dolor text....
</div>Probieren Sie es selbst aus →
<!DOCTYPE html>
<html lang="en">
<head>
<title>Bootstrap Example</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>
<div class="container mt-3">
<h2>Simple Collapsible</h2>
<a href="#demo" class="btn btn-primary" data-bs-toggle="collapse">Simple collapsible</a>
<div id="demo" class="collapse">
Lorem ipsum dolor sit amet, consectetur adipisicing elit,
sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam,
quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.
</div>
</div>
</body>
</html>
Standardmäßig ist der reduzierbare Inhalt ausgeblendet. Sie können jedoch die Klasse .show hinzufügen, um den Inhalt standardmäßig anzuzeigen:
<div id="demo" class="collapse show">
Lorem ipsum dolor text....
</div>Probieren Sie es selbst aus →
<!DOCTYPE html>
<html lang="en">
<head>
<title>Bootstrap Example</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>
<div class="container mt-3">
<h2>Show Collapsible Content By Default</h2>
<p>Add the show class next to the collapse class to show the content by default.</p>
<p>Click on the button to toggle between showing and hiding content.</p>
<button type="button" class="btn btn-primary" data-bs-toggle="collapse" data-bs-target="#demo">Simple collapsible</button>
<div id="demo" class="collapse show">
Lorem ipsum dolor sit amet, consectetur adipisicing elit,
sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam,
quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.
</div>
</div>
</body>
</html>
Das folgende Beispiel zeigt ein einfaches Akkordeon durch Erweiterung der Kartenkomponente.
Hinweis: Verwenden Sie das Attribut data-bs-parent, um sicherzustellen, dass alle reduzierbaren Elemente unter dem angegebenen übergeordneten Element geschlossen werden, wenn eines der reduzierbaren Elemente geschlossen wird Artikel wird angezeigt.
<div id="accordion">
<div class="card">
<div class="card-header">
<a class="btn" data-bs-toggle="collapse" href="#collapseOne">
Collapsible Group Item #1
</a>
</div>
<div id="collapseOne" class="collapse show" data-bs-parent="#accordion">
<div class="card-body">
Lorem ipsum..
</div>
</div>
</div>
<div class="card">
<div class="card-header">
<a class="collapsed btn" data-bs-toggle="collapse" href="#collapseTwo">
Collapsible Group Item #2
</a>
</div>
<div id="collapseTwo" class="collapse" data-bs-parent="#accordion">
<div class="card-body">
Lorem ipsum..
</div>
</div>
</div>
<div class="card">
<div class="card-header">
<a class="collapsed btn" data-bs-toggle="collapse" href="#collapseThree">
Collapsible Group Item #3
</a>
</div>
<div id="collapseThree" class="collapse" data-bs-parent="#accordion">
<div class="card-body">
Lorem ipsum..
</div>
</div>
</div>
</div>Probieren Sie es selbst aus →
<!DOCTYPE html>
<html lang="en">
<head>
<title>Bootstrap Example</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet">
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script>
</head>
<body>
<div class="container mt-3">
<h2>Accordion Example</h2>
<p><strong>Note:</strong> The <strong>data-bs-parent</strong> attribute makes sure that all collapsible elements under the specified parent will be closed when one of the collapsible item is shown.</p>
<div id="accordion">
<div class="card">
<div class="card-header">
<a class="btn" data-bs-toggle="collapse" href="#collapseOne">
Collapsible Group Item #1
</a>
</div>
<div id="collapseOne" class="collapse show" data-bs-parent="#accordion">
<div class="card-body">
Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.
</div>
</div>
</div>
<div class="card">
<div class="card-header">
<a class="collapsed btn" data-bs-toggle="collapse" href="#collapseTwo">
Collapsible Group Item #2
</a>
</div>
<div id="collapseTwo" class="collapse" data-bs-parent="#accordion">
<div class="card-body">
Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.
</div>
</div>
</div>
<div class="card">
<div class="card-header">
<a class="collapsed btn" data-bs-toggle="collapse" href="#collapseThree">
Collapsible Group Item #3
</a>
</div>
<div id="collapseThree" class="collapse" data-bs-parent="#accordion">
<div class="card-body">
Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.
</div>
</div>
</div>
</div>
</div>
</body>
</html>