How do I get from an instance of a class to a Class object in ActionScript 3?

Glyph_13564 0
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How do you get an instance of the actionscript class Class from an instance of that class?

In Python, this would be x.__class__; in Java, x.getClass();.

I'm aware that certain terrible hacks exist to do this, but I'm looking for a built-in language facility, or at least a library routine built on something reliable.

actionscript actionscript-3 apache-flex flash
3 Answers

You can get it through the 'constructor' property of the base Object class. i.e.:

var myClass:Class = Object(myObj).constructor;
user_194040

Any reason you couldn't do this?

var s:Sprite = new flash.display.Sprite();

var className:String = flash.utils.getQualifiedClassName( s );
var myClass:Class = flash.utils.getDefinitionByName( className ) as Class;

trace(className ); // flash.display::Sprite
trace(myClass); // [class Sprite]

var s2 = new myClass();
trace(s2); // [object Sprite]

I don't know a way to avoid round-tripping through a String, but it should work well enough.

fenomas_106510
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