JS Practice — Built-in Objects

Map clear() — has() false after clear

📖 Usage Example

const m = new Map([['a', 1], ['b', 2]])
m.clear()
console.log(m.size) // → 0

Use Map.clear() to remove all key-value pairs from the map.

Map.prototype.clear()

After clear(), has() returns false for all previously existing keys.

Challenge: Verify that has() returns false after clear().

💡 Hints (1)