JS Practice — Built-in Objects

Set keys() — type of iterator

📖 Usage Example

const s = new Set([1, 2, 3])
for (const k of s.keys()) {
  console.log(k) // 1, 2, 3
}

Use Set.keys() to iterate over the values of a set (identical to values()).

Set.prototype.keys()

keys() returns a SetIterator.

Challenge: Verify the type of the keys() return value.

💡 Hints (1)