JS Practice — Built-in Objects

Set size — after delete

📖 Usage Example

const s = new Set([1, 2, 3])
console.log(s.size)   // → 3
s.add(4)
console.log(s.size)   // → 4

Read Set.size to get the number of unique values in the set.

Set.prototype.size

Deleting a value decreases the size.

Challenge: Verify that size decreases after delete().

💡 Hints (1)