hour minute second millisecond format javascript code example

Example 1: javascript convert milliseconds to hh mm ss

var result = Math.floor(myDuration/(1000*60*60)) + ":" + Math.floor(myDuration/(1000*60))%60 + ":" + Math.floor(myDuration/1000)%60;

Example 2: from milliseconds to hours in js

function msToTime(duration) {
  var milliseconds = parseInt((duration % 1000) / 100),
    seconds = Math.floor((duration / 1000) % 60),
    minutes = Math.floor((duration / (1000 * 60)) % 60),
    hours = Math.floor((duration / (1000 * 60 * 60)) % 24);

  hours = (hours < 10) ? "0" + hours : hours;
  minutes = (minutes < 10) ? "0" + minutes : minutes;
  seconds = (seconds < 10) ? "0" + seconds : seconds;

  return hours + ":" + minutes + ":" + seconds + "." + milliseconds;
}
console.log(msToTime(300000))