Flash Player 5. If you are using ActionScript 2, use instead of this property.
myObject.__proto__
None.
Note: If you are using ActionScript 2, use instead of this property.
Property; refers to the prototype property of the constructor function that created myObject. The __proto__ property is automatically assigned to all objects when they are created. The ActionScript interpreter uses the __proto__ property to access the prototype property of the object's constructor function to find out what properties and methods the object inherits from its class.