Bootstrap 4 - Nav
Descrizione
Bootstrap fornisce elementi di navigazione per il tuo sito in un menu orizzontale.
Base Nav con collegamento disabilitato
Crea un menu di navigazione aggiungendo la classe .nav all'elemento <ul> seguito da elementi di navigazione e aggiungi la classe nav.link per creare il collegamento per gli elementi di navigazione. Il seguente esempio lo dimostra:
Esempio
<html lang = "en">
<head>
<!-- Meta tags -->
<meta charset = "utf-8">
<meta name = "viewport" content = "width = device-width, initial-scale = 1, shrink-to-fit = no">
<!-- Bootstrap CSS -->
<link rel = "stylesheet"
href = "https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css"
integrity = "sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO"
crossorigin = "anonymous">
<title>Bootstrap 4 Example</title>
</head>
<body>
<div class = "container">
<h2>Base Nav and Disabled Link</h2>
<ul class = "nav">
<li class = "nav-item">
<a class = "nav-link active" href = "#">Home</a>
</li>
<li class = "nav-item">
<a class = "nav-link" href = "#">About Us</a>
</li>
<li class = "nav-item">
<a class = "nav-link" href = "#">Contact</a>
</li>
<li class = "nav-item">
<a class = "nav-link disabled" href = "#">Sign-In (Disabled)</a>
</li>
</ul>
</div>
<!-- jQuery first, then Popper.js, then Bootstrap JS -->
<script src = "https://code.jquery.com/jquery-3.3.1.slim.min.js"
integrity = "sha384-q8i/X+965DzO0rT7abK41JStQIAqVgRVzpbzo5smXKp4YfRvH+8abtTE1Pi6jizo"
crossorigin = "anonymous">
</script>
<script src = "https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.3/umd/popper.min.js"
integrity = "sha384-ZMP7rVo3mIykV+2+9J3UJ46jBk0WLaUAdn689aCwoqbBJiSnjAK/l8WvCWPIPm49"
crossorigin = "anonymous">
</script>
<script src = "https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/js/bootstrap.min.js"
integrity = "sha384-ChfqqxuZUCnJSK3+MXmPNIyE6ZbWh2IMqE241rYiqJxyMiZ6OW/JmZQ5stwEULTy"
crossorigin = "anonymous">
</script>
</body>
</html>Produrrà il seguente risultato:
Produzione
Nav allineato
Nav può essere allineato al centro aggiungendo la classe .justify-content-center e sul lato destro aggiungendo la classe .justify-content-end come mostrato nell'esempio seguente:
Esempio
<html lang = "en">
<head>
<!-- Meta tags -->
<meta charset = "utf-8">
<meta name = "viewport" content = "width = device-width, initial-scale = 1, shrink-to-fit = no">
<!-- Bootstrap CSS -->
<link rel = "stylesheet"
href = "https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css"
integrity = "sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO"
crossorigin = "anonymous">
<title>Bootstrap 4 Example</title>
</head>
<body>
<div class="container">
<h2>Center Aligned Nav</h2>
<ul class = "nav justify-content-center">
<li class = "nav-item">
<a class = "nav-link active" href = "#">Home</a>
</li>
<li class = "nav-item">
<a class = "nav-link" href = "#">About Us</a>
</li>
<li class = "nav-item">
<a class = "nav-link" href = "#">Contact</a>
</li>
<li class = "nav-item">
<a class = "nav-link" href = "#">Sign-In</a>
</li>
</ul>
<h2>Right Aligned Nav</h2>
<ul class = "nav justify-content-end">
<li class = "nav-item">
<a class = "nav-link active" href = "#">Home</a>
</li>
<li class = "nav-item">
<a class = "nav-link" href = "#">About Us</a>
</li>
<li class = "nav-item">
<a class = "nav-link" href = "#">Contact</a>
</li>
<li class = "nav-item">
<a class = "nav-link" href = "#">Sign-In</a>
</li>
</ul>
</div>
<!-- jQuery library -->
<script src = "https://code.jquery.com/jquery-3.2.1.slim.min.js"
integrity = "sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN"
crossorigin = "anonymous"></script>
<!-- Popper -->
<script src =" https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js"
integrity = "sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q"
crossorigin = "anonymous"></script>
<!-- Latest compiled and minified Bootstrap JavaScript -->
<script src = "https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"
integrity = "sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl"
crossorigin = "anonymous"></script>
</body>
</html>Produrrà il seguente risultato:
Produzione
Allineamento verticale
Puoi creare una navigazione verticale aggiungendo la classe .flex-column all'elemento .nav come mostrato nell'esempio seguente:
Esempio
<html lang = "en">
<head>
<!-- Meta tags -->
<meta charset = "utf-8">
<meta name = "viewport" content = "width = device-width, initial-scale = 1, shrink-to-fit = no">
<!-- Bootstrap CSS -->
<link rel = "stylesheet"
href = "https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css"
integrity = "sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO"
crossorigin = "anonymous">
<title>Bootstrap 4 Example</title>
</head>
<body>
<div class = "container">
<h2>Vertical Alignment</h2>
<ul class = "nav flex-column">
<li class = "nav-item">
<a class = "nav-link active" href = "#">Home</a>
</li>
<li class = "nav-item">
<a class = "nav-link" href = "#">About Us</a>
</li>
<li class = "nav-item">
<a class = "nav-link" href = "#">Contact</a>
</li>
<li class = "nav-item">
<a class = "nav-link" href = "#">Sign-In</a>
</li>
</ul>
</div>
<!-- jQuery library -->
<script src = "https://code.jquery.com/jquery-3.2.1.slim.min.js"
integrity = "sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN"
crossorigin = "anonymous"></script>
<!-- Popper -->
<script src = "https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js"
integrity = "sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q"
crossorigin="anonymous"></script>
<!-- Latest compiled and minified Bootstrap JavaScript -->
<script src = "https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"
integrity = "sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl"
crossorigin = "anonymous"></script>
</body>
</html>Produrrà il seguente risultato:
Produzione
Schede, pillole, schede e pillole con menu a discesa
Puoi creare un'interfaccia di navigazione a schede utilizzando la classe .nav-tabs e il menu di navigazione per le pillole di navigazione utilizzando la classe .nav-pillole . Puoi anche aggiungere un menu a discesa a una scheda o pillola utilizzando la classe .dropdown nell'elemento <li> come mostrato nell'esempio seguente:
Esempio
<html lang = "en">
<head>
<!-- Meta tags -->
<meta charset = "utf-8">
<meta name = "viewport" content = "width = device-width, initial-scale = 1, shrink-to-fit = no">
<!-- Bootstrap CSS -->
<link rel = "stylesheet"
href = "https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css"
integrity = "sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO"
crossorigin = "anonymous">
<title>Bootstrap 4 Example</title>
</head>
<body>
<div class = "container">
<h2>Navigation Tabs</h2>
<ul class = "nav nav-tabs">
<li class = "nav-item">
<a class = "nav-link active" href = "#">Home</a>
</li>
<li class = "nav-item">
<a class = "nav-link" href = "#">About Us</a>
</li>
<li class = "nav-item">
<a class = "nav-link" href = "#">Contact</a>
</li>
<li class = "nav-item">
<a class = "nav-link" href = "#">Sign-In</a>
</li>
</ul>
<br>
<h2>Navigation Pills</h2>
<ul class = "nav nav-pills">
<li class = "nav-item">
<a class = "nav-link active" href = "#">Home</a>
</li>
<li class = "nav-item">
<a class = "nav-link" href = "#">About Us</a>
</li>
<li class = "nav-item">
<a class = "nav-link" href = "#">Contact</a>
</li>
<li class = "nav-item">
<a class = "nav-link" href = "#">Sign-In</a>
</li>
</ul>
<br>
<h2>Tabs With Dropdown</h2>
<ul class = "nav nav-tabs">
<li class = "nav-item">
<a class = "nav-link active" href = "#">Home</a>
</li>
<li class = "nav-item dropdown">
<a class = "nav-link dropdown-toggle" data-toggle = "dropdown"
href = "#" role = "button" aria-haspopup = "true"
aria-expanded = "false">Library</a>
<div class = "dropdown-menu">
<a class = "dropdown-item" href = "#">HTML-5</a>
<a class = "dropdown-item" href = "#">CSS-3</a>
<a class = "dropdown-item" href = "#">JavaScript</a>
<div class = "dropdown-divider"></div>
<a class = "dropdown-item" href = "#">Bootstrap 4</a>
</div>
</li>
<li class = "nav-item">
<a class = "nav-link" href = "#">About Us</a>
</li>
<li class = "nav-item">
<a class = "nav-link" href = "#">Contact</a>
</li>
</ul>
<br>
<h2>Pills with dropdown</h2>
<ul class = "nav nav-pills">
<li class = "nav-item">
<a class = "nav-link active" href = "#">Home</a>
</li>
<li class = "nav-item dropdown">
<a class = "nav-link dropdown-toggle" data-toggle = "dropdown"
href =" #" role = "button" aria-haspopup = "true"
aria-expanded =" false">Library</a>
<div class = "dropdown-menu">
<a class = "dropdown-item" href = "#">HTML-5</a>
<a class = "dropdown-item" href = "#">CSS-3</a>
<a class = "dropdown-item" href = "#">JavaScript</a>
<div class = "dropdown-divider"></div>
<a class = "dropdown-item" href = "#">Bootstrap 4</a>
</div>
</li>
<li class = "nav-item">
<a class = "nav-link" href = "#">About Us</a>
</li>
<li class = "nav-item">
<a class = "nav-link" href = "#">Contact</a>
</li>
</ul>
</div>
<!-- jQuery library -->
<script src = "https://code.jquery.com/jquery-3.2.1.slim.min.js"
integrity = "sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN"
crossorigin = "anonymous"></script>
<!-- Popper -->
<script src = "https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js"
integrity = "sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q"
crossorigin = "anonymous"></script>
<!-- Latest compiled and minified Bootstrap JavaScript -->
<script src = "https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"
integrity = "sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl"
crossorigin = "anonymous"></script>
</body>
</html>Produrrà il seguente risultato:
Produzione
Tab e pillole commutabili
Puoi creare schede o pillole attivabili aggiungendo l' attributo data-toggle = "tab" o data-toggle = "pill" all'elemento <a>. Per ogni scheda o pillola, aggiungi una classe .tab-pane con un ID univoco e inserisci il contenuto all'interno di un elemento <div> con la classe .tab-content .
Il seguente esempio lo dimostra:
Esempio
<html lang = "en">
<head>
<!-- Meta tags -->
<meta charset = "utf-8">
<meta name = "viewport" content = "width = device-width, initial-scale = 1, shrink-to-fit = no">
<!-- Bootstrap CSS -->
<link rel = "stylesheet"
href = "https://stackpath.bootstrapcdn.com/bootstrap/4.1.3/css/bootstrap.min.css"
integrity = "sha384-MCw98/SFnGE8fJT3GXwEOngsV7Zt27NXFoaoApmYm81iuXoPkFOJwJ8ERdknLPMO"
crossorigin = "anonymous">
<title>Bootstrap 4 Example</title>
</head>
<body>
<div class = "container">
<h2>Toggleable Tabs</h2>
<ul class = "nav nav-tabs" id = "myTab" role = "tablist">
<li class = "nav-item">
<a class = "nav-link active" id = "home-tab" data-toggle = "tab"
href = "#home" role = "tab" aria-controls = "home"
aria-selected = "true">Home</a>
</li>
<li class = "nav-item">
<a class = "nav-link" id = "aboutus-tab" data-toggle = "tab"
href = "#aboutus" role = "tab" aria-controls = "aboutus"
aria-selected = "false">About Us</a>
</li>
<li class = "nav-item">
<a class = "nav-link" id = "contact-tab" data-toggle = "tab"
href = "#contact" role = "tab" aria-controls = "contact"
aria-selected = "false">Contact</a>
</li>
</ul>
<div class = "tab-content" id = "myTabContent">
<div class = "tab-pane fade show active" id = "home" role = "tabpanel"
aria-labelledby = "home-tab">Content for Home tab</div>
<div class = "tab-pane fade" id = "aboutus" role = "tabpanel"
aria-labelledby = "aboutus-tab">Content for About Us tab</div>
<div class = "tab-pane fade" id = "contact" role = "tabpanel"
aria-labelledby = "contact-tab">Content for Contact tab</div>
</div>
<br>
<h2>Toggleable Pills</h2>
<ul class = "nav nav-pills mb-3" id = "pills-tab" role = "tablist">
<li class = "nav-item">
<a class = "nav-link active" id = "pills-home-tab"
data-toggle = "pill" href = "#pills-home" role = "tab"
aria-controls = "pills-home" aria-selected = "true">Home</a>
</li>
<li class = "nav-item">
<a class = "nav-link" id = "pills-aboutus-tab" data-toggle = "pill"
href = "#pills-aboutus" role = "tab" aria-controls = "pills-aboutus"
aria-selected = "false">About Us</a>
</li>
<li class = "nav-item">
<a class = "nav-link" id = "pills-contact-tab" data-toggle = "pill"
href = "#pills-contact" role = "tab" aria-controls = "pills-contact"
aria-selected = "false">Contact</a>
</li>
</ul>
<div class = "tab-content" id = "pills-tabContent">
<div class = "tab-pane fade show active" id = "pills-home"
role = "tabpanel" aria-labelledby = "pills-home-tab">
Content for Home tab
</div>
<div class = "tab-pane fade" id = "pills-aboutus" role = "tabpanel"
aria-labelledby = "pills-aboutus-tab">
Content for About Us tab
</div>
<div class = "tab-pane fade" id = "pills-contact" role = "tabpanel"
aria-labelledby = "pills-contact-tab">
Content for Contact tab
</div>
</div>
</div>
<!-- jQuery library -->
<script src = "https://code.jquery.com/jquery-3.2.1.slim.min.js"
integrity = "sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN"
crossorigin = "anonymous">
</script>
<!-- Popper -->
<script src = "https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.9/umd/popper.min.js"
integrity = "sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q"
crossorigin = "anonymous">
</script>
<!-- Latest compiled and minified Bootstrap JavaScript -->
<script src = "https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/js/bootstrap.min.js"
integrity = "sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl"
crossorigin="anonymous">
</script>
</body>
</html>Produrrà il seguente risultato: