JS Built-ins
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Sethasbeginner

Set has() — existing value

📖 Usage Example
const s = new Set([1, 2, 3])
s.has(2)   // → true
s.has(99)  // → false

Use Set.has() to check if a value exists in the set.

Set.prototype.has()

has(value) returns true if the value is in the Set.

Challenge: Verify that has() returns true for an existing value.

💡 Hints (1)
  • • has() returns true if the value exists in the Set