Abstracting array traversal with each() on mapEach() - Javascript

function each (array, callback) {
  for (var i = 0; i < array.length; i++) {
    callback(array[i]);
  }
}

each([2, 6, 7], console.log); // => 2, 6, 7

function mapEach (array, callback) {
  var result = [];
  each(array, function (index) {
    return (function (j) {
      result.push(callback(j));
    }(index));
  });
  return result;
}

console.log(mapEach([1, 2, 5, 7, 8, 9, 89], function (i) { return i * 2; }));
// => [2, 4, 10, 14, 16, 18, 178]