String.prototype.valueOf()

The valueOf() method of String values returns this string value.

Try it

const stringObj = new String("foo");

console.log(stringObj);
// Expected output: String { "foo" }

console.log(stringObj.valueOf());
// Expected output: "foo"

Syntax

js
valueOf()

Parameters

None.

Return value

A string representing the primitive value of a given String object.

Description

The valueOf() method of String returns the primitive value of a String object as a string data type. This value is equivalent to String.prototype.toString().

This method is usually called internally by JavaScript and not explicitly in code.

Examples

undefined

Using valueOf()

js
const x = new String("Hello world");
console.log(x.valueOf()); // 'Hello world'

Specifications

See also