Add days to a Date

add_days.js

function addDays(input_date, days) {
    let date = new Date(input_date);
    date.setDate(date.getDate() + days);
    return date;
}

function formatDate(date) {
    const day = date.toLocaleString('default', { day: '2-digit' });
    const month = date.toLocaleString('default', { month: 'short' });
    const year = date.toLocaleString('default', { year: 'numeric' });
    return day + '-' + month + '-' + year;
}

let date1 = new Date('16-Feb-2023');
let date2 = addDays(date1, 3);
console.log(formatDate(date2));