Iterate over array of objects

How to write this correct?

var replaceList  = { 
  yyyy: "d.getFullYear()", 
  yy:   "d.getFullYear().substr(-2)",
  mm:   "('0'+d.getMonth()).substr(-2)",
  dd:   "('0'+d.getDay()).substr(-2)",
  d:    "d.getDay()",
  m:    "d.getMonth()",
  HH:   "('0'+d.getHours()).substr(-2)",
  MM:   "('0'+d.getMinutes()).substr(-2)",
  SS:   "('0'+d.getSeconds()).substr(-2)",
  //.... and more 
};

// create time normal 
var timePattern =  { 0: "HH:MM:SS ", 1: "HH:MM" };
var timeN =  timePattern[0];
replaceList.forEach(e => {
  timeN = timeN.replace(e,replaceList[e]);
});
console.log(timeN);