it's a timer with proper addition of zeroes

addZeroesToTime.js

function showTime(){
  let todayDate = new Date(),
      hour = todayDate.getHours(),
      mins = todayDate.getMinutes(),
      sec  = todayDate.getSeconds() ;
  
  const amPm = hour>=12 ? 'PM' : 'AM' ;
  
  //12 hours format
  hour = hour % 12  || 12 ;
  const timeOutPut  = `${addZero(hour)} : ${addZero(mins)} : ${addZero(sec)}` ;
  console.log(timeOutPut);
  setTimeout(showTime,1000)
}
​
showTime() ;
​
function addZero(n){
  return (parseInt(n,10) < 10  ? '0' : '' ) + n ;
}