.forEach returns 'undefined'

Language Help JavaScript
1

“*** .forEach() is used to execute the same code on every element in an array but does not change the array and returns undefined .**”

What does it mean "returns ‘undefined’ " here?
when run the code with .forEach method, it works well and returns the expected content, so it doesn’t look undefined to me.

2

if there is no return keyword in a function or method, undefined is implicitly returned.

look:

var array1 = ['a', 'b', 'c'];

result = array1.forEach(function(element) {
  console.log(element);
});

console.log(result);

as you can see, we capture the “returned” result of the method in a variable. If we then log this variable, we see undefined.

so yea, the forEach function logs all the different elements, but the method itself returns undefined

1 Like
3

I had the same confusion, but this explains.
Thanks.