<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- 上述3个meta标签*必须*放在最前面,任何其他内容都*必须*跟随其后! -->
<title>Bootstrap 101 Template</title>
<!-- 1.加载Bootstrap层叠样式表 -->
<link href="css/bootstrap.min.css" rel="stylesheet">
<!-- HTML5 shim and Respond.js for IE8 support of HTML5 elements and media queries -->
<!-- WARNING: Respond.js doesn't work if you view the page via file:// -->
<!--[if lt IE 9]>
<script src="//cdn.bootcss.com/html5shiv/3.7.2/html5shiv.min.js"></script>
<script src="//cdn.bootcss.com/respond.js/1.4.2/respond.min.js"></script>
<![endif]-->
</head>
<body>
<!-- 水平排列按钮组 -->
<div class="btn-group">
<button class="btn btn-default" type="button">1</button>
<button class="btn btn-success" type="button">2</button>
<button class="btn btn-warning" type="button">3</button>
<!-- 嵌套,把下拉列表放在按钮组里,然后放入另一个按钮组 -->
<div class="btn-group" role="group">
<button type="button" class="btn btn-default dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown
<span class="caret"></span>
</button>
<ul class="dropdown-menu">
<li><a href="#">Dropdown link</a></li>
<li><a href="#">Dropdown link</a></li>
</ul>
</div>
</div>
<hr>
<!--垂直排列按钮组 -->
<div class="btn-group-vertical">
<button class="btn btn-default" type="button">1</button>
<button class="btn btn-success" type="button">2</button>
<button class="btn btn-warning" type="button">3</button>
<div class="btn-group" role="group">
<button type="button" class="btn btn-default dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown
<span class="caret"></span>
</button>
<ul class="dropdown-menu">
<li><a href="#">Dropdown link</a></li>
<li><a href="#">Dropdown link</a></li>
</ul>
</div>
</div>
<hr>
<!-- 两端对齐排列的按钮组 -->
<div class="btn-group btn-group-justified" role="group" aria-label="...">
<div class="btn-group" role="group">
<button type="button" class="btn btn-default">Left</button>
</div>
<div class="btn-group" role="group">
<button type="button" class="btn btn-default">Middle</button>
</div>
<div class="btn-group" role="group">
<button type="button" class="btn btn-default">Right</button>
</div>
<div class="btn-group" role="group">
<button type="button" class="btn btn-default dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">Dropdown
<span class="caret"></span>
</button>
<ul class="dropdown-menu">
<li><a href="#">Dropdown link</a></li>
<li><a href="#">Dropdown link</a></li>
</ul>
</div>
</div>
</body>
</html>
<!-- 2.加载JQuery库 -->
<script src="../plugins/jquery-1.12.4.min.js"></script>
<!-- 3.加载Bootstrap核心js -->
<script src="js/bootstrap.min.js"></script>