WeakMaphasbeginner

WeakMap.prototype.has() — null value

📖 Usage Example

const wm = new WeakMap()
const a = {}, b = {}
wm.set(a, 1)
wm.has(b)  // → false

Different object references are distinct keys even with the same structure.

WeakMap has() with null Value

Even if the value is null, has(key) returns true.

Challenge: Verify has() with null value.

💡 Hints (1)

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