Pull variable FROM AS3 to javascript function?

[willCrain_514]

Anyone know how to grab the values from a running AS3 file and put them into a javascript function on the html page?

I know how to initiate js functions with the ExternalInterface but not sure how to push a variable out.

What i am using this for is an MP3 player that i developed. I want to pass the variables for the "current track" and "if the player is playing". I just dont know how to begin making the swf pass out its variables

thanks for any help

will

[5TonsOfFlax]

It's not clear whether you're calling AS from JS or vice versa. If AS is calling JS, then you can simply pass parameters in the ExternalInterface calls.

ExternalInterface.call("someJSFunction", currentTrack, isPlaying);

If you are calling AS from JS, you could create and expose getter functions for your properties

private function getCurrentTrack():String{
  return currentTrack;
}
private function getIsPlaying():Boolean{
  return isPlaying;
}
//...
ExternalInterface.addCallback("getCurrentTrack", getCurrentTrack);
ExternalInterface.addCallback("getIsPlaying", getIsPlaying);

Javascript can then call those methods to get your values.

[willCrain_514]

Thanks for the reply.

sorry to be confusing. I am grabbing the variables, that are constantly changing, out of the swf(mp3 player) and using them in a javascript function.


Just so that i understand:

AS3:

private function getCurrentTrack():String{
  return currentTrack;
}
private function getIsPlaying():Boolean{
  return isPlaying;
}

Javascript or AS3?:

ExternalInterface.addCallback("getCurrentTrack", getCurrentTrack);
ExternalInterface.addCallback("getIsPlaying", getIsPlaying);

Currently i am using this:
AS3:

public function initFunction() {
   updateStatusToPage();
}
private function getCurrentTrack():String{
  return currentTrack;
}
private function getIsPlaying():Boolean{
  return isPlaying;
}
private function updateStatusToPage() {
			ExternalInterface.addCallback("getCurrentTrack", getCurrentTrack);
			ExternalInterface.addCallback("getIsPlaying", getIsPlaying);
			var result:Boolean = ExternalInterface.call("jsFunction_Update");
			trace (ExternalInterface.available); // Trace = TRUE
}

javascript:

<script language="javascript">
	function jsFunction_Update() {
		javascript:updateStatus(currentTrack, isPlaying);
		return false;
	}
</script>

then the idea is that dynamically form the outside script i can pass:

javascript:updateStatus(4, true);

when i go to another page so that it will continue where i left off on my playlist

see any reason this isnt working. I'm just not familiar with talking outside of my swf.

thanks again

[5TonsOfFlax]

All code in my previous reply was Actionscript.

A couple of things:
The addCallBack calls are one-time. You do not need to call them each time you update. But that's okay, since you don't need them at all, apparently.

Second, your javascript is invalid.

Try this AS:

public function initFunction() {
   updateStatusToPage();
}
private function updateStatusToPage() {
			var result:Boolean = ExternalInterface.call("jsFunction_Update", currentTrack, isPlaying);
			trace (ExternalInterface.available); // Trace = TRUE
}

And this javascript:

<script language="javascript">
	function jsFunction_Update(currentTrack, isPlaying) {
		updateStatus(currentTrack, isPlaying);
		return false;
	}
</script>

[willCrain_514]

i actually just went back and after looking at it for a few minutes and getting a headache from its ugliness, I weeded and cleaned it up and came up with almost the same thing. almost

Your suggestions really helped out. I am going to test this out later on and see if it works.

Appreciate it a lot. thanks