JS to show time slots ( PROGRESS TIMER )

 function format(time) {   

    // Hours, minutes and seconds

    var hrs = ~~(time / 3600);

    var mins = ~~((time % 3600) / 60);

    var secs = ~~time % 60;

    // Output like "1:01" or "4:03:59" or "123:03:59"

    var ret = "";

    if (hrs > 0) {

        ret += "" + hrs + ":" + (mins < 10 ? "0" : "");

    }

    ret += "" + mins + ":" + (secs < 10 ? "0" : "");

    ret += "" + secs;

    return ret;

}

console.log(format(34322));

REF : Labstack