Reversing javascript arrays without the reverse method

arrays.js

// reverse an array that modifies the array
function reverseArrayInPlace(arr) {
  let length = arr.length;
  for (let i = length - 1; i >= 0; i--) {
    arr.push(arr[i]);
  }

  arr.splice(0, length);
  return arr;
}

// reverse an array that creates a new array with push method
function reverseArray(arr) {
  const newArr = [];

  for (let i = arr.length - 1; i >= 0; i--) {
    newArr.push(arr[i]);
  }
  return newArr;
}

// reverse an array that creates a new array with unshift method
function reverseArray(arr) {
  const newArr = [];

  for (let i = 0; i < arr.length; i++) {
    newArr.unshift(arr[i]);
  }
  return newArr;
}