JS Practice — Built-in Objects

Set intersection() — size

📖 Usage Example

const a = new Set([1, 2, 3])
const b = new Set([2, 3, 4])
const common = a.intersection(b)
console.log([...common]) // → [2, 3]

Use Set.intersection() to get the values present in both sets.

Set.prototype.intersection() (ES2025)

The size of the intersection is the count of common elements.

Challenge: Verify the size of the intersection.

💡 Hints (1)