WeakSethasbeginner

WeakSet.prototype.has() — non-added object

📖 Usage Example

const ws = new WeakSet()
const o = {}
ws.has(o)  // → false

has() returns false for objects not added to the WeakSet.

WeakSet has() Missing

ws.has(obj) returns false for an object that was never added.

Challenge: Verify has() returns false.

💡 Hints (1)

9/20