conosle log value undefined?`

textBox.addEventListener("keydown", (event) =>
  console.log(`You pressed "${event.key}".`),
);

textBox.addEventListener("keydown", (event) =>
  console.log(`You pressed "${event.key}".`),
);

In this case, the value of console.log(), which is undefined, is implicitly returned from the callback function.

source: https://developer.mozilla.org/en-US/docs/Learn/JavaScript/Building_blocks/Functions What do they mean by conosle log's value being undefined? here coz like it doesnt seem undefined

2 Replies

ἔρως•5mo ago

exactly what's written literally the function returns undefined that's it

brrOP•5mo ago

but im giving it a string or passing* wait i get it now

let a = console.log("2");
console.log(a);

let a = console.log("2");
console.log(a);

Output:

2 script.js:1:17
undefined script.js:2:9

2 script.js:1:17
undefined script.js:2:9

idk what happened honestly and this has been happnening for years now in every lang lol happens