In tootip popup informative text about the respective element is given,which appears hovering over the element.
<!DOCTYPE html>
<html>
<head>
<title></title>
<link rel="stylesheet" href="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.2/jquery.min.js"></script>
<script src="http://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/js/bootstrap.min.js"></script>
</head>
<body>
<div class="row col-md-offset-2">When you hover on any button , you will see a different tooltip in different direction according to instructions.</div>
<br/>
<div class="row">
<div class="col-md-12 col-md-offset-2">
<button type="button" class="btn btn-primary" data-toggle="tooltip" data-placement="bottom" title="Tooltip on left">Tooltip on left</button>
<button type="button" class="btn btn-info" data-toggle="tooltip" data-placement="top" title="Tooltip on top">Tooltip on top</button>
<button type="button" class="btn btn-danger" data-toggle="tooltip" data-placement="bottom" title="Tooltip on bottom">Tooltip on bottom</button>
<button type="button" class="btn btn-success" data-toggle="tooltip" data-placement="right" title="Tooltip on right">Tooltip on right</button>
</div>
</div>
</body>
</html>
<script type="text/javascript">
$(function () {
$('[data-toggle="tooltip"]').tooltip()
})
</script>
