Problem in change date format calendar

http://forum.jquery.com/topic/problem-in-change-date-format-calendar#14737000006813525

by Akram kamal

HTML

<input id=datepicker1 
class=date-picker value="15-03-2017">

JavaScript

var startdate = $.datepicker.parseDate('dd-mm-yy',$("#datepicker1").val());
alert(startdate);
var dateToday = new Date();
alert(dateToday);
var dates = $(".date-picker").datepicker({
    defaultDate: "+1w",
    changeMonth: true,
    numberOfMonths: 1,
    minDate: dateToday,
    dateFormat: 'dd-mm-yy'
});