Event for text box for coming value from date picker

Event for text box for coming value from date picker

Hello
I am new member of this forum, and this is my first post here..
:-)
i have one problem..
i have one date picker by selecting date, that date is coming into text box.
Now i need to update span text when value coming into text box of date.

i used
<input type="text" id="start_date" value="start_date">
<span id="StartDate"></span> 

$('#start_date').on('change keyup keydown click paste', function() {
            if ($('#start_date').val() == '')
            {
                $('#StartDate').text(Date');
            }
            else
            {
                $('#StartDate').text($('#start_date').val());
            }
        });



here no any event fire as the value coming from date picker.

is there any event for this type that the value is coming from other source as a datepicker?
or any other solution?

thank you....