JS Practice — Built-in Objects

String.prototype.valueOf() — String object primitive value

📖 Usage Example

const str = 'Hello'
str.valueOf()               // → 'Hello'
new String('hi').valueOf()   // → 'hi'

Use valueOf() to return the primitive string value, useful when working with String wrapper objects.

String.prototype.valueOf() — String Object

A String object wraps a primitive. valueOf() unwraps it to a primitive.

Challenge: Implement objectValueOf(strObj) that extracts the primitive from a String object.

objectValueOf(new String('hello')) // → 'hello'

💡 Hints (1)