WeakSetaddbeginner

WeakSet.prototype.add() — has returns true

📖 Usage Example

const ws = new WeakSet()
const obj = {}
ws.add(obj)
ws.has(obj)  // → true

add() inserts an object into the WeakSet.

WeakSet add()

After ws.add(obj), ws.has(obj) is true.

Challenge: Verify add makes has return true.

💡 Hints (1)

4/20