collapse

UK[kəˈlæps] US[kəˈlæps]

vi.Collapse; collapse; fold; (especially after work and fatigue) sit down

vt.To collapse; to collapse; to disintegrate

n.Collapse; (physical) weakness

in

英[ɪn ] 美[ɪn]

prep. Adopt (a certain way); wear, carry; (indicates position) in..., (indicates field, range) within...; (indicates quality, ability, etc.) among...

adv. At home; enter, arrive; popular; elected

adj. Including, inward; in power, in power; [colloquial] popular, Fashionable; (car, etc.) arriving at the station

n. Ruling party, those in power; insiders; <Meikou> entrance, access; <body> (cricket or baseball) attack Party

Bootstrap collapse.in style syntax

Function: Display content.

Bootstrap collapse.in style example

<!DOCTYPE html>
<html>
<head>
	<meta charset="utf-8"> 
	<title>php中文网(php.cn)</title> 
	<meta name="viewport" content="width=device-width, initial-scale=1">
	<link rel="stylesheet" href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css">
	<script src="https://cdn.bootcss.com/jquery/2.1.1/jquery.min.js"></script>
	<script src="https://cdn.bootcss.com/bootstrap/3.3.7/js/bootstrap.min.js"></script>
</head>
<body>	
<div class="container">
	<h2>简单的折叠</h2>
	<button type="button" class="btn btn-info" data-toggle="collapse" data-target="#demo">简单的折叠</button>
	<div id="demo" class="collapse in">
		Lorem ipsum dolor sit amet, consectetur adipisicing elit,
		sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam,
		quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.
	</div>
</div>
</body>
</html>
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