Number.prototype.valueOf()

The valueOf() method of {{jsxref("Number")}} values returns the value of this number.

{{InteractiveExample("JavaScript Demo: Number.prototype.valueOf()")}}

```js interactive-example const numObj = new Number(42); console.log(typeof numObj); // Expected output: "object"

const num = numObj.valueOf(); console.log(num); // Expected output: 42

console.log(typeof num); // Expected output: "number"

## Syntax

```js-nolint
valueOf()

Parameters#

None.

Return value#

A number representing the primitive value of the specified {{jsxref("Number")}} object.

Description#

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

Examples#

Using valueOf#

const numObj = new Number(10);
console.log(typeof numObj); // object

const num = numObj.valueOf();
console.log(num); // 10
console.log(typeof num); // number

Specifications#

{{Specifications}}

Browser compatibility#

{{Compat}}

See also#

• {{jsxref("Object.prototype.valueOf()")}}