JS Practice — Built-in Objects

Set entries() — both elements are same

📖 Usage Example

const s = new Set(['a', 'b'])
for (const [key, val] of s.entries()) {
  console.log(key, val) // 'a' 'a', then 'b' 'b'
}

Use Set.entries() to iterate over [value, value] pairs; both elements are the same.

Set.prototype.entries()

Both elements of each entry are identical — entry[0] === entry[1].

Challenge: Verify that entry[0] equals entry[1].

💡 Hints (1)