* index bulan dimulai dari 0, jadi Jan = 0, Feb = 1, dan seterusnya
Menambahkan Hari
var date = new Date(2015, 7, 13);
var date2 = date.setDate(date.getDate() + 7);
console.log('Seven days from 13 Aug 2015 is ' + new Date(date2));
Seven days from 13 Aug 2015 is Thu Aug 20 2015 00:00:00
Menambahkan bulan
var date = new Date(2015, 7, 13);
var date2 = date.setMonth(date.getMonth() + 5);
console.log('Five months from 13 Aug 2015 is ' + new Date(date2));
Five months from 13 Aug 2015 is Wed Jan 13 2016
Menambahkan tahun
var date = new Date(2015, 7, 13);
var date2 = date.setFullYear(date.setFullYear() + 5);
console.log('Five years from 13 Aug 2015 is ' + new Date(date2));
Five years from 13 Aug 2015 is Thu Aug 13 2020