Could someone please explain, why I get this error in Javascript

Asked Jan 22 '20 at 19:07

Active Jan 22 '20 at 19:07

Viewed 42 times

const cowSound = 'moo';
function makeSound() {
  console.log('My cow goes', cowSound);
  const cowSound = 'baa';
  console.log('My cow goes', cowSound);
}

makeSound();

VM174:3 Uncaught ReferenceError: Cannot access 'cowSound' before initialization

asked Jan 22 '20 at 19:07

Krishantha Karunarathna

6

The localized `const` cowSound in the method that is hoisted, is not initialized at the time you try to use it. – Taplar Jan 22 '20 at 19:09
@Taplar You can use the answer section to provide an answer. The comment section is there if you want to ask for clarification. – Mickael B. Jan 22 '20 at 19:10
2

Surely there is an existing duplicate already. I don't need points that badly. – Taplar Jan 22 '20 at 19:10
@Taplar, Thank you for your answer, I did not know that variables inside a function get hoisted withing the function – Krishantha Karunarathna Jan 22 '20 at 19:18

Could someone please explain, why I get this error in Javascript

0 Answers0