Question

function countdown()
{
    seconds = 1000;
    delay = delay-seconds;
    conversion = Math.ceil(delay / seconds );
    document.getElementById('timer').innerHTML =  conversion + ":seconds until alarm goes off";
    t3 = setTimeout("countdown()",1000);

    if(conversion == 0)
    {
        alert('Wake UP!!!');
        DontDoIt();
    }
}

This code displays the timer in seconds. I want to be able to show the time in minutes and seconds if the time is greater than 60.

I want to be able to do this with hours, minutes, and seconds

Answer 1

This should solve the problem for you
If needed it displays hours, minutes (with a leading zero) and seconds

function countdown() {
    seconds = 1000;
    delay = delay - seconds
    secs = Math.ceil(delay / seconds);
    var hrs = Math.floor(secs / 3600);
    var mins = Math.floor((secs - (hrs * 3600)) / 60);
    secs -= ((hrs * 3600) + (mins * 60));

    document.getElementById('timer').innerHTML = ((hrs>0) ? hrs + ':' : '') + ((mins>0) ? ((mins>9) ? mins : '0'+mins) + ':' : '') + ((secs>9) ? secs : '0'+secs) + " until alarm goes off";
    t3 = setTimeout("countdown()", 1000);
    if (delay == 0) {
        alert('Wake UP!!!');
        DontDoIt();
    }
}