JS Practice — Built-in Objects

valueOf() — primitive number.valueOf() === itself

📖 Usage Example

// Retrieve the primitive numeric value
const n = new Number(42)
n.valueOf()          // → 42
typeof n.valueOf()   // → 'number'

Use valueOf() on a Number object to extract the underlying primitive number value, which JavaScript also calls automatically in numeric expressions.

valueOf() on a Primitive

Calling valueOf() on a primitive number returns the number itself (autoboxing handles the call).

💡 Hints (1)

• Autoboxing converts a primitive number to a `Number` object temporarily to call the method.