var strDate = new Date(); // By default Date empty constructor give you Date.now
var shortYear = strDate.getFullYear();
// Add this line
var twoDigitYear = shortYear.toString().substr(-2);
maskDate(date) {
// console.log(date);
var dateVar = new Date(date);
// console.log("XX/XX/"+ dateVar.getFullYear().toString().substr(-2));
return "XX/XX/"+ dateVar.getFullYear().toString().substr(-2);
}