$(function () {
$("#datepicker").datepicker({
});
});
<body>
<form id="formu">
Nome:
<input type="text" id="name"><br>
Data de nascimento:
<input type="text" id="datepicker" name="data"/><br>
<input type="button" id="botton" value="Ok">
</form>
<div id="resultado"></div>
</body>
** the age of the user. Then show in the result div. **