comparing loops in javascript

loops.js

function benchmark(testName, callback) {
  const startTime = performance.now();
  callback();
  const endTime = performance.now();
  console.log(testName, `time: ${endTime - startTime}`);
}

const nums = Array(1000).fill(1);

function iterateWithMap(nums) {
  return nums.map((num) => num + 1);
}

function iterateWithForLoop(nums) {
  for (let i = 0; i < nums.length; i++) {
    nums[i] += 1;
  }

  return nums;
}

function iterateWithForEach(nums) {
  nums.forEach((num, index, array) => {
    array[index] = num + 1;
  });

  return nums;
}

function iterateWithForOf(nums) {
  for (let num of nums) {
    num += 1;
  }

  return nums;
}

benchmark("map", () => iterateWithMap(nums));
benchmark("forLoop", () => iterateWithForLoop(nums));
benchmark("forEach", () => iterateWithForEach(nums));
benchmark("forOf", () => iterateWithForOf(nums));

my forEach implementation was wrong: https://chat.openai.com/share/d2ab421a-ff1f-44c0-9d43-ecf1119c07f2