CODEWITHSUNDEEP
javascripttypescript
Husniddin Qurbonboyev
Husniddin Qurbonboyev

Reputation: 1814

Why am I getting different result from the code?

I have a simple function that returns array of items.

function arrayFromValue(...item) {
    return item;
}

console.log(arrayFromValue(1, 2, 3));

The function works fine but, when wrote the code like this:

function arrayFromValue(...item) {
    return 
    item;
}

console.log(arrayFromValue(1, 2, 3));

it outputs undefined

Upvotes: 2

Views: 49

Answers (1)

norbitrial
norbitrial

Reputation: 15166

The reason behind that is Automatic Semicolon Insertion. Read from the documentation:

The return statement is affected by automatic semicolon insertion (ASI). No line terminator is allowed between the return keyword and the expression.

Source: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/return

So your code which returns undefined is equivalent with:

function arrayFromValue(...item) {
   return;
}

After return statement the rest of the code will be ignored.

I hope that helps!

Upvotes: 3

Related Questions