JavaScript: The Definitive Guide

24.139. Number.valueOf( ): return the primitive number value

ECMAScript v1: Overrides Object.valueOf( )

24.139.1. Synopsis

number.valueOf( )

24.139.1.1. Returns

The primitive number value of this Number object. It is rarely necessary to call this method explicitly.

24.139.1.2. Throws

TypeError

If this method is invoked on an object that is not a Number.

24.139.2. See Also

Object.valueOf( )