Relevant Date is not dipsplaying properly

use this function 

 

function ConvertJsonDateString(jsonDate) {
var shortDate = null;
if (jsonDate) {
var regex = /-?\d+/;
var matches = regex.exec(jsonDate);
var dt = new Date(parseInt(matches[0]));
var month = dt.getMonth() + 1;
var monthString = month > 9 ? month : '0' + month;
var day = dt.getDate();
var dayString = day > 9 ? day : '0' + day;
var year = dt.getFullYear();
shortDate = dayString + '/' + monthString + '/' + year;
}
return shortDate;
};