JavaScript seconds to time string with format hh:mm:ss

Question

I want to convert a duration of time, i.e., number of seconds to colon-separated time string (hh:mm:ss)

I found some useful answers here but they all talk about conv

Answer 1

Here is a fairly simple solution that rounds to the nearest second!

var returnElapsedTime = function(epoch) {
  //We are assuming that the epoch is in seconds
  var hours = epoch / 3600,
      minutes = (hours % 1) * 60,
      seconds = (minutes % 1) * 60;
  return Math.floor(hours) + ":" + Math.floor(minutes) + ":" + Math.round(seconds);
}