JavaScript count down, add hours & minutes

Question

So, I have the below (seconds countdown) in good order. But! I am trying to add hours & minutes as apart of the count down as well. Ideally keeping the same structure, and j

Answer 1

Something like this:

var count = 30;
var counter = setInterval(timer, 1000); //1000 will  run it every 1 second

function timer() {
    count = count - 1;
    if (count == -1) {
        clearInterval(counter);
        return;
    }

    var seconds = count % 60;
    var minutes = Math.floor(count / 60);
    var hours = Math.floor(minutes / 60);
    minutes %= 60;
    hours %= 60;

    document.getElementById("timer").innerHTML = hours + "hours " + minutes + "minutes and" + seconds + " seconds left on this Sale!"; // watch for spelling
}