countdown/script.js

const daysEl =document.getElementById ('days');
const hoursEl =document.getElementById ('hours');
const minutesEl =document.getElementById ('minutes');
const secondsEl =document.getElementById ('seconds');

const newYears = '19 Oct 2022 19:00:00';

function countdown() {
    const newYearsDate = new Date(newYears);
    const currentDate = new Date();


    const totalSeconds = new Date(newYearsDate - currentDate) / 1000;

    const days = Math.floor(totalSeconds / 3600 / 24);
    const hours = Math.floor(totalSeconds / 3600) % 24;
    const minutes = Math.floor(totalSeconds / 60) % 60;
    const seconds =Math.floor(totalSeconds) % 60;
    
    daysEl.innerHTML = days;
    hoursEl.innerHTML = hours;
    minutesEl.innerHTML = minutes;
    secondsEl.innerHTML = seconds;
}

//Initial call
countdown();

setInterval(countdown, 1000);