Using "this"

1

hey… I just want to know… is there an advantage / disadvantage to using “this”… for example…

this makes use of “this”:

package 
{
    import flash.display.Sprite;
    import flash.events.Event;
    
    public class TestClass extends Sprite 
    {
        public function TestClass()
        {
            this.addEventListener(Event.ADDED_TO_STAGE, init);
        }
        
        function init(event:Event):void
        {
            this.removeEventListener(Event.ADDED_TO_STAGE, init);
            
            this.addEventListener(Event.ENTER_FRAME, update);
        }
        
        function update(event:Event):void
        {
            trace(this.x, this.y);
        }
    }
    
}

this doesn’t:

package 
{
    import flash.display.Sprite;
    import flash.events.Event;
    
    public class TestClass extends Sprite 
    {
        public function TestClass()
        {
            addEventListener(Event.ADDED_TO_STAGE, init);
        }
        
        function init(event:Event):void
        {
            removeEventListener(Event.ADDED_TO_STAGE, init);
            
            addEventListener(Event.ENTER_FRAME, update);
        }
        
        function update(event:Event):void
        {
            trace(x, y);
        }
    }
    
}

but they both achieve the same thing…

so what exactly is the difference between the two?