The following code shows how to show popup for focused text input.
<!DOCTYPE html>
<html>
<head>
<script type='text/javascript'
src='http://code.jquery.com/jquery-1.10.1.js'></script>
<link rel="stylesheet" type="text/css"
href="http://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.0.0-rc1/css/bootstrap.min.css">
<script type='text/javascript'
src="http://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/3.0.0-rc1/js/bootstrap.min.js"></script>
<script type='text/javascript'>
$(window).load(function(){<!--from ww w. j a v a2s .c o m-->
$('input[type=text]').popover({trigger:'focus'});
});
</script>
</head>
<body>
<table cellpadding="5" width="50%">
<tr>
<td>Name</td>
<td><input type="text" id="name" data-content="name"
name="name" class="form-control" /></td>
</tr>
<tr>
<td>Password</td>
<td><input type="text" name="cvr" class="form-control"
data-content="password" /></td>
</tr>
</table>
</body>
</html>