// Set the date we're counting down to var countDownDate = new Date("Sep 2, 2019 8:00:00").getTime(); // Update the count down every 1 second var x = setInterval(function () { // Get todays date and time var now = new Date().getTime(); // Find the distance between now an the count down date var distance = countDownDate - now; // Time calculations for days, hours, minutes and seconds var days = Math.floor(distance / (1000 * 60 * 60 * 24)); var hours = Math.floor((distance % (1000 * 60 * 60 * 24)) / (1000 * 60 * 60)); var minutes = Math.floor((distance % (1000 * 60 * 60)) / (1000 * 60)); var seconds = Math.floor((distance % (1000 * 60)) / 1000); // Output the result in an element with id="demo" document.getElementById("timer").innerHTML = "" + days + " jours, " + hours + " heures, " + minutes + " minutes et " + seconds + " secondes avant de quitter les moldus"; // If the count down is over, write some text if (distance < 0) { clearInterval(x); document.getElementById("timer").innerHTML = 'Allé on y va, ze parti !'; } }, 1000);