Answers for "how to add leading zeroes javascript loop with numbers greater than 10"

add leading zeros to number javascript

const number = 5;
console.log(number.toString().padStart(2, '0')); // expected output: "05"

Javascript add leading zeroes to date

var MyDate = new Date();
var MyDateString;

MyDate.setDate(MyDate.getDate() + 20);

MyDateString = ('0' + MyDate.getDate()).slice(-2) + '/'
             + ('0' + (MyDate.getMonth()+1)).slice(-2) + '/'
             + MyDate.getFullYear();