functional-programming1

functional-programming1.js

function mapForEach(arr, fn) {
  const newArr = [];

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

const arr1 = [1, 2, 3]
console.log(arr1);

const arr2 = mapForEach(arr1, (item) => {
  return item * 2
});

console.log(arr2);