.forEach() Javascript function is returning an Array?

Question

Generally, It is said that 'forEach' doesn't return an array, whereas 'map' returns one. However, In my case, it is returning one. Below posted is my code. I am kind of confused. Any help would be appreciated.

//Code Snippet //
var arr = [1, 3, 2];
var arr_temp = [];

arr.forEach(function (i) {
  return arr_temp.push(i + i);
});

console.log(arr_temp);

I am getting the output as: [2,6,4]

Answer 1

It doesn't return anything. You can check that by logging the result of the forEach call:

 var arr = [1, 3, 2]; var arr_temp = []; console.log(arr.forEach(function (i) { return arr_temp.push(i + i); })); // undefined console.log(arr_temp); // 2, 6, 4