本文概述
Boostrap徽章
Boostrap徽章是用于指示与特定链接相关联的项目数量的数字指示器。徽章用于突出显示新的或未读的项目。
<span>元素中的类.badge用于创建徽章。
Boostrap徽章示例
<!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 rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
</head>
<body>
<div class="container">
<h2>Badges</h2>
<a href="#">News <span class="badge">5</span></a><br>
<a href="#">Comments <span class="badge">10</span></a><br>
<a href="#">Updates <span class="badge">2</span></a>
</div>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.0/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
</body>
</html>Boostrap徽章示例2
你还可以在其他元素（例如按钮）中使用徽章。
让我们以示例为例，看看如何向按钮添加徽章。
<!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 rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
</head>
<body>
<div class="container">
<h2>Badges on Buttons</h2>
<button type="button" class="btn btn-primary">Primary <span class="badge">7</span></button>
<button type="button" class="btn btn-success">Success <span class="badge">3</span></button>
<button type="button" class="btn btn-danger">Danger <span class="badge">5</span></button>
</div>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.0/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
</body>
</html>Boostrap标签
Boostrap标签用于指定有关诸如商品数量，技巧或其他页面组成的信息。
.label类用于显示标签。
Boostrap标签示例
<!DOCTYPE html>
<html lang="en">
<head>
<title>Bootstrap Label Example</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
</head>
<body>
<div class="container">
<h2>Labels Example</h2>
<h1>Update <span class="label label-default">New</span></h1>
<h2>Update<span class="label label-default">New</span></h2>
<h3>Update <span class="label label-default">New</span></h3>
<h4>Update<span class="label label-default">New</span></h4>
<h5>Update<span class="label label-default">New</span></h5>
<h6>Update<span class="label label-default">New</span></h6>
</div>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.0/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
</body>
</html>Boostrap标签示例2：更改颜色
我们可以通过使用上下文标签类来更改标签颜色。
<!DOCTYPE html>
<html lang="en">
<head>
<title>Bootstrap Contextual Label</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
</head>
<body>
<div class="container">
<h2>Contextual Label Classes</h2>
<span class="label label-default">Default Label</span>
<span class="label label-primary">Primary Label</span>
<span class="label label-success">Success Label</span>
<span class="label label-info">Info Label</span>
<span class="label label-warning">Warning Label</span>
<span class="label label-danger">Danger Label</span>
</div>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.0/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
</body>
</html>Boostrap标签示例3
<!DOCTYPE html>
<html lang="en">
<head>
<title>Bootstrap Case</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
</head>
<body>
<div class="container">
<h2>Labels Example</h2>
<h3>Update <span class="label label-default">new</span>
<h3>Update <span class="label label-primary">new</span>
<h3>Update <span class="label label-success">new</span>
<h3>Update <span class="label label-info">new</span>
<h3>Update <span class="label label-warning">new</span>
<h3>Update <span class="label label-danger">new</span>
</div>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.0/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
</body>
</html>Bootstrap 4徽章
在Bootstrap 4中，徽章还可以与标题标签（<h1> …… <h6>）一起使用。在<span>元素中将.badge类与上下文类（例如.badge-secondary）一起使用，以创建矩形标记。
例：
<!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 rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.6/umd/popper.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/js/bootstrap.min.js"></script>
</head>
<body>
<div class="container">
<h2>Badges Example</h2>
<h1>h1 heading <span class="badge badge-secondary">New</span></h1>
<h2>h2 heading <span class="badge badge-secondary">New</span></h2>
<h3>h3 heading <span class="badge badge-secondary">New</span></h3>
<h4>h4 heading <span class="badge badge-secondary">New</span></h4>
<h5>h5 heading <span class="badge badge-secondary">New</span></h5>
<h6>h6 heading <span class="badge badge-secondary">New</span></h6>
</div>
</body>
</html>上下文徽章
你可以使用上下文类来更改徽章的颜色。
例：
<!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 rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.6/umd/popper.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/js/bootstrap.min.js"></script>
</head>
<body>
<div class="container">
<h2>Contextual Badges Example</h2>
<span class="badge badge-primary">Primary Badge</span>
<span class="badge badge-secondary">Secondary Badge</span>
<span class="badge badge-success">Success Badge</span>
<span class="badge badge-danger">Danger Badge</span>
<span class="badge badge-warning">Warning Badge</span>
<span class="badge badge-info">Info Badge</span>
<span class="badge badge-light">Light Badge</span>
<span class="badge badge-dark">Dark Badge</span>
</div>
</body>
</html>Bootstrap 4药丸徽章
药丸徽章用于使徽章更圆。使用类.badge-pill类添加药丸徽章。
例：
<!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 rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.12.6/umd/popper.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.2/js/bootstrap.min.js"></script>
</head>
<body>
<div class="container">
<h2>Pill Badges Example</h2>
<span class="badge badge-pill badge-primary">Primary</span>
<span class="badge badge-pill badge-secondary">Secondary</span>
<span class="badge badge-pill badge-success">Success</span>
<span class="badge badge-pill badge-danger">Danger</span>
<span class="badge badge-pill badge-warning">Warning</span>
<span class="badge badge-pill badge-info">Info</span>
<span class="badge badge-pill badge-light">Light</span>
<span class="badge badge-pill badge-dark">Dark</span>
</div>
</body>
</html>
