script.js

const daysE1 = document.getElementById('days')
const hoursE1 = document.getElementById('hours')
const minutesE1 = document.getElementById('minutes')
const secondsE1 = document.getElementById('seconds')

const wordCup = '21 Nov 2022 7:00'

function countdown() {
  const wordCupDate = new Date(wordCup)
  const currentDate = new Date()

  const totalSeconds = (wordCupDate - 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

  daysE1.innerHTML = days
  hoursE1.innerHTML = formatTime(hours)
  minutesE1.innerHTML = formatTime(minutes)
  secondsE1.innerHTML = formatTime(seconds)
}
function formatTime(time) {
  return time < 10 ? `0${time}` : time
}

countdown()

setInterval(countdown, 1000);