stackoverflow: Bootstrap Popover on Input : hover
http://stackoverflow.com/questions/18555560/bootstrap-popover-on-input-hover
HTML
<link rel="stylesheet" href="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/css/bootstrap.css">
<script src="https://netdna.bootstrapcdn.com/bootstrap/3.1.1/js/bootstrap.js"></script>
<div id="container">
<div class="row">
<div class="col-xs-10">
<label for="mytext">My Text:</label>
<input id="mytext" class="form-control" type="text"
data-toggle="popover" data-trigger="hover"
data-placement="bottom" data-content="My popover content.">
</div>
</div>
<div class="row">
<div class="col-xs-6">
<label for="name">Name:</label>
<input id="name" class="form-control" type="text"
data-toggle="popover" data-trigger="hover"
data-content="My popover content.My popover content.My popover content.My popover content.">
</div>
</div>
</div>
CSS
#container {
padding: 15px;
}
JavaScript
$('#mytext').popover();
$('#name').popover();