[Demo] DatePicker Date Format as "yy-mm-dd"

[Demo] DatePicker Date Format as "yy-mm-dd"

HTML

<link rel="stylesheet" href="http://code.jquery.com/ui/1.9.1/themes/base/jquery-ui.css">
<p>Date:
    <input type="text" id="datepicker" value="01/01/2018" />
</p>

<div class="next-prev">
   <div class="next-day">
       Next date >
   </div>
      <div class="prev-day">
       previous date >
   </div>
</div>

CSS

.next-prev{
    display: inline-block;
    padding: 0px;
    top: -45px;
    position: relative;
    right: -243px;
}

JavaScript

$(document).ready(function () {
    var date = new Date();
    var currentMonth = date.getMonth();
    var currentDate = date.getDate();
    var currentYear = date.getFullYear();

    $('#datepicker').datepicker({
        //minDate: new Date(currentYear, currentMonth, currentDate),
        dateFormat: 'dd/mm/yy'
    });
});

$(document).on("click", '.next-day', function () {
     console.log('clicked');
    var date = $('#datepicker').datepicker('getDate');
    date.setTime(date.getTime() + (1000*60*60*168))
    $('#datepicker').datepicker("setDate", date);
});

$(document).on("click", '.prev-day', function () {
    var date = $('#datepicker').datepicker('getDate');
     console.log(date);
    date.setTime(date.getTime() - (1000*60*60*168));
    $('#datepicker').datepicker("setDate", date);
});