JS Practice — Built-in Objects

Empty Array toLocaleString

📖 Usage Example

const arr = []
arr.toLocaleString()  // → ''  (empty string)

toLocaleString() on an empty array returns an empty string.

Array.prototype.toLocaleString — Empty Array

Calling toLocaleString() on an empty array returns an empty string ''. This is consistent with toString() and join() behavior on empty arrays.

Implement emptyLocaleString() that returns ([] as number[]).toLocaleString().

💡 Hints (2)

• An empty array has no elements to convert, so `toLocaleString()` returns `""`.
• This mirrors the behavior of `[].toString()` and `[].join(",")`.