# Noobie help!

**URL:** <https://forum.kirupa.com/t/noobie-help/305550>\
**Category:** flash\
**Created:** [February 27, 2010, 3:31am UTC](https://forum.kirupa.com/t/noobie-help/305550 "2010-02-27T03:31:59Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![alejandroy](https://avatars.discourse-cdn.com/v4/letter/a/b38774/32.png) [@alejandroy](https://forum.kirupa.com/u/alejandroy)\
**Post date:** [February 27, 2010, 3:31am UTC](https://forum.kirupa.com/t/noobie-help/305550/1 "2010-02-27T03:31:59Z")

</div>

I’m making the jump from AS2 to AS3 and I have a piece of code that I used in AS2 which I’m trying to translate to AS3. Basically what I want to do is check to see if the swf is already cached so that it skips the preloader. Here’s the AS2 code:

```auto

 stop();
this.onEnterFrame = function() {
if (this.getBytesLoaded()>=this.getBytesTotal() && this.getBytesLoaded()>0) {
this.gotoAndStop(4);
delete this.onEnterFrame;
} else {
this.gotoAndStop(2);
delete this.onEnterFrame;
}
};

```

Also I got this code which loads and external swf and also unloads it when another swf is called (got it from another forum). I would like to do much the same thing, check if the external swf is cached and skip the preloader function and directly load the swf.

```auto

//preloader
var _swfLoader:Loader;
var _swfContent:MovieClip;
function loadSWF(path : String):void {
    var _req : URLRequest = new URLRequest ();
    _req.url = path;
    _swfLoader = new Loader ();
    setupListeners(_swfLoader.contentLoaderInfo);
    _swfLoader.load(_req);
}

function setupListeners(dispatcher : IEventDispatcher):void {
    dispatcher.addEventListener(Event.COMPLETE, addSWF);
    dispatcher.addEventListener(ProgressEvent.PROGRESS, preloadSWF);
}

function preloadSWF(event : ProgressEvent):void {
    var _perc : int = (event.bytesLoaded / event.bytesTotal) * 100;
    percentTxt.text = _perc + "%";
    progress_mc.gotoAndStop(_perc );
}

function addSWF(event : Event):void {
    event.target.removeEventListener(Event.COMPLETE, addSWF);
    event.target.removeEventListener(ProgressEvent.PROGRESS, preloadSWF);
    trace("Load Complete");
    this.percentTxt.visible = false;
    this.progress_mc.visible = false;
    _swfContent = event.target.content;
    this.addEventListener("close", unloadSWF);
    extContainer.addChild(_swfContent);
}

function unloadSWF(event : Event):void {
    _swfLoader.unloadAndStop();
    extContainer.removeChild(_swfContent);
    extContainer._swfContent = null;
}

```

I haven’t’ got a handle of how to write functions in AS3 yet so if there’s a helpful soul out there who can help, I’ll be very grateful

Cheers,