Getting list of dates between two dates not returning correctly JS

Question

I have a start date and an end date, and I want to generate a list of dates between (and including) these two dates. But I don\'t get why it isn\'t working...

I pass in

Answer 1

Because the same object is modified all elements referencing the same object

Answer 2

Try to add new Date(i), instead of just i:

function dateList(dateStart, dateEnd) {
  var dates = [];
  for (i = dateStart; i <= dateEnd; i.setDate(i.getDate() + 1)){
    dates.push(new Date(i));
  }
  return dates;
}

console.log(dateList(new Date('2017-05-08'), new Date('2017-05-12')));

Answer 3

Your code i.setDate(i.getDate() + 1) doesn't create a new date - it just updates the same Date object over and over. Then you push that object onto the array, which pushes a reference to that object - not a copy of the object.

A solution would be to create a new Date() inside the loop and setting the value of it, and then pushing this new date onto your array.