example3.js

<input type="text" name="birthday" value="10/24/1984" />

<script>
$(function() {
  $('input[name="birthday"]').daterangepicker({
    singleDatePicker: true,
    showDropdowns: true,
    minYear: 1901,
    maxYear: parseInt(moment().format('YYYY'),10)
  }, function(start, end, label) {
    var years = moment().diff(start, 'years');
    alert("You are " + years + " years old!");
  });
});
</script>