JavaScript: The Definitive Guide, 5th Edition

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Name

Number.valueOf( ): return the primitive number value â ECMAScript v1: Overrides Object.valueOf( )

Synopsis

number.valueOf( )

Returns

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

Throws

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

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JavaScript: The Definitive Guide, 5th Edition by David Flanagan