JavaScript FullCalendar อยากให้ select วันที่เลือกได้

<script type="text/javascript">
    jQuery( document ).ready(function() {   
      $('#calendar').fullCalendar({
            header: {
                        left: 'prev,next today',
                        center: 'title',
                        right: 'month,agendaWeek,agendaDay'
                    },
                    buttonText: {//This is to add icons to the visible buttons
                        prev: "<span class='fa fa-caret-left'></span>",
                        next: "<span class='fa fa-caret-right'></span>",
                        today: 'today',
                        month: 'month',
                        week: 'week',
                        day: 'day'
                    },
            defaultDate: new Date(),
            editable: false,
            events: {
                url: "{{ url('asset/getallplancalendar') }}",
                error: function() {
                    $('#script-warning').show();
                }
            },            
            loading: function(bool) {
                $('#loading').toggle(bool);
            }
            ,eventClick: function(calEvent, jsEvent, view) {
            //alert('Clicked on: ' + date());
                alert('Event: ' + calEvent.title);
                alert('Coordinates: ' + jsEvent.pageX + ',' + jsEvent.pageY);
                alert('View: ' + view.name);                  
                alert('View: ' + $.fullCalendar.formatDate(calEvent.start, "yyyy-MM-dd"));         
            }

        });
    });
 </script>  

$event_array[$i_event]['url']='show2.php?id='.$rs['id'];