How can I test if an instance is of the type Object? If I try the is operator, all Object subclasses return true as well.

var o:Object = {};
var s:Sprite = new Sprite();
trace(o is Object); //true
trace(s is Object); //true

How can I have it only return true of the instance is an Object superclass and not any one of it's myriad of subclasses?

CodePudding user response：

The flash.utils.getQualifiedClassName(...) method returns the exact String representation of the class for both instance and its class passed as the method argument.

import flash.utils.getQualifiedClassName;

var O:Object = {};
var S:Sprite = new Sprite;

var GQ:Function = getQualifiedClassName;

trace(GQ(O) == GQ(Object)); // true
trace(GQ(S) == GQ(Object)); // false

UPD: There's another way to do it, although I personally like it less. You can use the Object.constructor property which probably points to the class constructor of the given instance.

function isObject(target:Object):Boolean
{
    return target.constructor == Object
}

trace(isObject(O)); // true
trace(isObject(S)); // false