deep-copy.js

//todo
var days = ["Monday", "Tuesday", "Wednesday", "Thursday", "Friday"];
var daysCopy = days;

days.push("Saturday", "Sunday");
daysCopy[0] = "Lundi";

console.log(days);
// ["Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"]

console.log(daysCopy);
// ["Lundi", "Tuesday", "Wednesday", "Thursday", "Friday"]



function copy(aObject) {
  if (!aObject) {
    return aObject;
  }

  let v;
  let bObject = Array.isArray(aObject) ? [] : {};
  for (const k in aObject) {
    v = aObject[k];
    bObject[k] = (typeof v === "object") ? copy(v) : v;
  }

  return bObject;
}