DisplayObjectContainer

DisplayObjectContainer - Adobe ActionScript® 3 (AS3 ) API Reference

package{

    import flash.display.Sprite;
    import flash.events.MouseEvent;

    public class DisplayObjectTest01 extends Sprite {

        public function DisplayObjectTest01 ():void{
            var container:Sprite = new Sprite();
            addChild(container);

            var circle1:Sprite = new Sprite();
            circle1.graphics.beginFill(0xFF0000);
            circle1.graphics.drawCircle(40, 40, 40);
            circle1.addEventListener(MouseEvent.CLICK, clicked);

            var circle2:Sprite = new Sprite();
            circle2.graphics.beginFill(0x00FF00);
            circle2.graphics.drawCircle(100, 40, 40);
            circle2.addEventListener(MouseEvent.CLICK, clicked);

            var circle3:Sprite = new Sprite();
            circle3.graphics.beginFill(0x0000FF);
            circle3.graphics.drawCircle(70, 80, 40);
            circle3.addEventListener(MouseEvent.CLICK, clicked);

            container.addChild(circle1);
            container.addChild(circle2);
            container.addChild(circle3);
            addChild(container);

            function clicked(event:MouseEvent):void {
                var circle:Sprite = Sprite(event.target);
                var topPosition:uint = container.numChildren - 1;
                container.setChildIndex(circle, topPosition);
            }
        }
    }

}

Link

package;

import flash.display.Sprite;
import flash.events.MouseEvent;

class Main extends Sprite
{

    var container : Sprite = new Sprite();

    public function new()
    {
        super();
        //var container : Sprite = new Sprite();
        addChild(container);

        var circle1 : Sprite = new Sprite();
        circle1.graphics.beginFill(0xFF0000);
        circle1.graphics.drawCircle(40, 40, 40);
        circle1.addEventListener(MouseEvent.CLICK, clicked);

        var circle2 : Sprite = new Sprite();
        circle2.graphics.beginFill(0x00FF00);
        circle2.graphics.drawCircle(100, 40, 40);
        circle2.addEventListener(MouseEvent.CLICK, clicked);

        var circle3 : Sprite = new Sprite();
        circle3.graphics.beginFill(0x0000FF);
        circle3.graphics.drawCircle(70, 80, 40);
        circle3.addEventListener(MouseEvent.CLICK, clicked);

        container.addChild(circle1);
        container.addChild(circle2);
        container.addChild(circle3);
        addChild(container);

    }
    function clicked(event : MouseEvent) : Void{
        var circle : Sprite = cast((event.target), Sprite);
        var topPosition : Int = container.numChildren - 1;
        container.setChildIndex(circle, topPosition);
    };
}

DisplayObjectTest01