Reason of "undefined" in a function

Asked Sep 19 '22 at 08:11

Active Sep 19 '22 at 08:21

Viewed 48 times

I am trying to figure out the reason why this snippet returns as undefined.

Thanks in advance

let x = function() {
    return
    {
        message: 'hello'
    }
}

console.log(x());

edited Sep 19 '22 at 08:12

flyingfox

asked Sep 19 '22 at 08:11

Jules Perez

4

Because you moved `{` below `return` – tarkh Sep 19 '22 at 08:13
1

Return statement terminates [at end of line](https://2ality.com/2011/05/semicolon-insertion.html). – Oluwafemi Sule Sep 19 '22 at 08:14
@lucumt I fail to see how it's relevant at all. – VLAZ Sep 19 '22 at 08:23
3

This is called "automatic semicolon insertion", when the JS parser sees "return" and a new line character it automatically adds a semicolon, so your code becomes: "return; {...}" – Christian Vincenzo Traina Sep 19 '22 at 08:24

0 Answers0