Date

date.js

/**
 * Dates
 */
const days  = 3;
const date  = new Date();
const last  = new Date(date.getTime() + (days * 24 * 60 * 60 * 1000));
const day   = last.getDate();
const month = last.getMonth() + 1;
const year  = last.getFullYear();

const dayEl   = document.querySelector('.day');
const monthEl = document.querySelector('.month');
const yearEl  = document.querySelector('.year');

dayEl.textContent   = day;
monthEl.textContent = last.toLocaleString('default', { month: 'long' });
yearEl.textContent  = year;