在线运行代码 - 菜鸟教程

<!DOCTYPE html>
<html>
<head>
	<meta charset="utf-8"> 
	<title>Bootstrap 实例 - 按钮激活状态</title>
	<link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/css/bootstrap.min.css">  
	<script src="https://cdn.staticfile.org/jquery/2.1.1/jquery.min.js"></script>
	<script src="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/js/bootstrap.min.js"></script>
</head>
<body>

<p>
	<button type="button" class="btn btn-default btn-lg ">默认按钮</button>
   	<button type="button" class="btn btn-default btn-lg active">激活按钮</button>
</p>
<p>
   	<button type="button" class="btn btn-primary btn-lg ">原始按钮</button>
   	<button type="button" class="btn btn-primary btn-lg active">激活的原始按钮</button>
</p>

</body>
</html>
源代码

动行结果
