onEnterFrame as2/as3的不同

//as2
myMovieClip.onEnterFrame = function(){
trace("do something repetitive");
}
//as3
myMovieClip.addEventListener(Event.ENTER_FRAME,enterFrameFunction);
function enterFrameFunction(event:Event) {
trace("do something repetitive");
}

http://newsourcemedia.com/blog/flash-as3-onenterframe-event-changed/