彈出框控件類似于提示框，它在鼠標(biāo)點擊到元素后顯示，與提示框不同的是它可以顯示更多的內(nèi)容。
通過向元素添加 data-toggle="popover" 來來創(chuàng)建彈出框。
title 屬性的內(nèi)容為彈出框的標(biāo)題，data-content 屬性顯示了彈出框的文本內(nèi)容：
<a href="#" data-toggle="popover" title="彈出框標(biāo)題" data-content="彈出框內(nèi)容">多次點我</a>
注意: 彈出框要寫在 jQuery 的初始化代碼里: 然后在指定的元素上調(diào)用 popover() 方法。
以下示例可以在文檔的任何地方使用彈出框：
<!DOCTYPE html>
<html>
<head>
<title>Bootstrap 示例</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/css/bootstrap.min.css">
<script src="https://cdn.staticfile.org/jquery/3.2.1/jquery.min.js"></script>
<script src="https://cdn.staticfile.org/popper.js/1.15.0/umd/popper.min.js"></script>
<script src="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/js/bootstrap.min.js"></script>
</head>
<body>
<div class="container">
<h2>彈出框示例</h2>
<a href="#" data-toggle="popover" title="彈出框標(biāo)題" data-content="彈出框內(nèi)容">多次點我</a>
</div>
<script>
$(document).ready(function(){
$('[data-toggle="popover"]').popover();
});
</script>
</body>
</html>測試看看 ?/?默認情況下彈出框顯示在元素右側(cè)。
可以使用 data-placement 屬性來設(shè)定彈出框顯示的方向: top, bottom, left 或 right:
<!DOCTYPE html>
<html>
<head>
<title>Bootstrap 示例</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/css/bootstrap.min.css">
<script src="https://cdn.staticfile.org/jquery/3.2.1/jquery.min.js"></script>
<script src="https://cdn.staticfile.org/popper.js/1.15.0/umd/popper.min.js"></script>
<script src="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/js/bootstrap.min.js"></script>
</head>
<body>
<div class="container">
<h2>彈出框示例</h2> <br><br><br><br><br><br>
<a href="#" title="Header" data-toggle="popover" data-placement="top" data-content="Content">點我</a>
<a href="#" title="Header" data-toggle="popover" data-placement="bottom" data-content="Content">點我</a>
<a href="#" title="Header" data-toggle="popover" data-placement="left" data-content="Content">點我</a>
<a href="#" title="Header" data-toggle="popover" data-placement="right" data-content="Content">點我</a>
</div>
<script>
$(document).ready(function(){
$('[data-toggle="popover"]').popover();
});
</script>
</body>
</html>測試看看 ?/?按鈕中使用:
<!DOCTYPE html>
<html>
<head>
<title>Bootstrap 示例</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/css/bootstrap.min.css">
<script src="https://cdn.staticfile.org/jquery/3.2.1/jquery.min.js"></script>
<script src="https://cdn.staticfile.org/popper.js/1.15.0/umd/popper.min.js"></script>
<script src="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/js/bootstrap.min.js"></script>
</head>
<body>
<div class="container">
<h2>彈出框示例</h2> <br><br><br><br><br><br>
<button type="button" class="btn btn-secondary" data-container="body" data-toggle="popover" data-placement="top" data-content="Vivamus sagittis lacus vel augue laoreet rutrum faucibus.">
Popover on top
</button>
<button type="button" class="btn btn-secondary" data-container="body" data-toggle="popover" data-placement="right" data-content="Vivamus sagittis lacus vel augue laoreet rutrum faucibus.">
Popover on right
</button>
<button type="button" class="btn btn-secondary" data-container="body" data-toggle="popover" data-placement="bottom" data-content="Vivamus
sagittis lacus vel augue laoreet rutrum faucibus.">
Popover on bottom
</button>
<button type="button" class="btn btn-secondary" data-container="body" data-toggle="popover" data-placement="left" data-content="Vivamus sagittis lacus vel augue laoreet rutrum faucibus.">
Popover on left
</button>
</div>
<script>
$(document).ready(function(){
$('[data-toggle="popover"]').popover();
});
</script>
</body>
</html>測試看看 ?/?默認情況下，彈出框在再次點擊指定元素后就會關(guān)閉，你可以使用 data-trigger="focus" 屬性來設(shè)置在鼠標(biāo)點擊元素外部區(qū)域來關(guān)閉彈出框：
<!DOCTYPE html>
<html>
<head>
<title>Bootstrap 示例</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/css/bootstrap.min.css">
<script src="https://cdn.staticfile.org/jquery/3.2.1/jquery.min.js"></script>
<script src="https://cdn.staticfile.org/popper.js/1.15.0/umd/popper.min.js"></script>
<script src="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/js/bootstrap.min.js"></script>
</head>
<body>
<div class="container">
<h2>彈出框示例</h2> <br>
<a href="#" title="取消彈出框" data-toggle="popover" data-trigger="focus" data-content="點擊文檔的其他地方關(guān)閉我">點我</a>
</div>
<script>
$(document).ready(function(){
$('[data-toggle="popover"]').popover();
});
</script>
</body>
</html>測試看看 ?/?提示:如果你想實現(xiàn)在鼠標(biāo)移動到元素上顯示，移除后消失的效果，可以使用 data-trigger 屬性，并設(shè)置值為 "hover":
<!DOCTYPE html>
<html>
<head>
<title>Bootstrap 示例</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/css/bootstrap.min.css">
<script src="https://cdn.staticfile.org/jquery/3.2.1/jquery.min.js"></script>
<script src="https://cdn.staticfile.org/popper.js/1.15.0/umd/popper.min.js"></script>
<script src="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/js/bootstrap.min.js"></script>
</head>
<body>
<div class="container">
<h2>彈出框示例</h2> <br>
<a href="#" title="Header" data-toggle="popover" data-trigger="hover" data-content="一些內(nèi)容">鼠標(biāo)移動到我這</a>
</div>
<script>
$(document).ready(function(){
$('[data-toggle="popover"]').popover();
});
</script>
</body>
</html>測試看看 ?/?