ActionScript for Flash MX: The Definitive Guide, 2nd Edition By Colin Moock
Chapter 18. ActionScript Language Reference
Object.valueOf( ) Method
Flash 5
the primitive value of the object
someObject.valueOf()
Returns
The internally defined primitive value of someObject, if a primitive value is associated with someObject. If no primitive value is associated with someObject, then someObject itself is returned.
Description
The valueOf( ) method returns the primitive datum associated with an object, if such an association exists. This method is most commonly used with instances of the Number, String, and Boolean classes, which all have associated primitive data. It is rarely necessary to invoke valueOf( ) explicitly; it is automatically invoked by the interpreter whenever someObject is used where a primitive is expected.
