Why is there "undefined" in the console?

Question

Question about javascript from a rookie.

I need your help, thank you.

code

In the future, please post your code and not images of your code. — isherwood, Oct 15 '18 at 16:31

score 0 · Answer 1 · answered Oct 15 '18 at 16:31

It says undefined because nothing get returned by the function sayHi ; and you are displaying the return of the function.

function sayHi() {
  console.log('Hello');
}

console.log(sayHi());

function sayHi2() {
  console.log('Hello');
  
  return 'returned value';
}

console.log(sayHi2());

score 0 · Answer 2 · edited Oct 15 '18 at 16:32

0

Because you console.log() your console.log().

You only need to call instructor.sayHi() or your sayHi function should return a string that you console.log().

edited Oct 15 '18 at 16:32

isherwood

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answered Oct 15 '18 at 16:31

Nico_

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He's displaying the return of the function `sayHi`, not the `console.log` – Orelsanpls Oct 15 '18 at 16:33

Why is there "undefined" in the console?

2 Answers2