The following code shows how to expanding and collapsing individual element via JavaScript.
<!-- w w w . ja va2 s . c om-->
<!DOCTYPE html>
<html lang="en">
<head>
<title>Creating Twitter Bootstrap 3 Collapsible Element via
JavaScript</title>
<link rel="stylesheet"
href="http://netdna.bootstrapcdn.com/bootstrap/3.0.3/css/bootstrap.min.css">
<link rel="stylesheet"
href="http://netdna.bootstrapcdn.com/bootstrap/3.0.3/css/bootstrap-theme.min.css">
<script type="text/javascript"
src="http://code.jquery.com/jquery.min.js"></script>
<script
src="http://netdna.bootstrapcdn.com/bootstrap/3.0.3/js/bootstrap.min.js"></script>
<script type="text/javascript">
$(document).ready(function(){
$(".btn").click(function(){
$("#toggleDemo").collapse('toggle');
});
});
</script>
<style type="text/css">
p {
background: #F9F9F9;
border: 1px solid #E1E1E8;
margin: 10px 0;
padding: 8px;
}
.bs-example {
margin: 20px;
}
</style>
</head>
<body>
<div class="bs-example">
<!-- Trigger Button HTML -->
<input type="button" class="btn btn-primary" value="Toggle Button">
<!-- Collapsible Element HTML -->
<div id="toggleDemo">
<p>
This is a simple example of expanding and collapsing individual
element via JavaScript. Click on the <b>Toggle Button</b> button to
see the effect.
</p>
</div>
</div>
</body>
</html>