actionscript 3 - How do I use this URLRequest script? - actionscript-3

Question

I started learning ActionScript 3 a week ago and have stumbled across a huge learning curve. I found this script on the internet:
var _loader:URLLoader;
var _request:URLRequest;
function loadData():void {
_loader = new URLLoader();
_request = new URLRequest("http://www.travoid.com/game/Purchase.php?gid=1");
_request.method = URLRequestMethod.POST;
_loader.addEventListener(Event.COMPLETE, onLoadData);
_loader.addEventListener(IOErrorEvent.IO_ERROR, onDataFailedToLoad);
_loader.addEventListener(IOErrorEvent.NETWORK_ERROR, onDataFailedToLoad);
_loader.addEventListener(IOErrorEvent.VERIFY_ERROR, onDataFailedToLoad);
_loader.addEventListener(IOErrorEvent.DISK_ERROR, onDataFailedToLoad);
_loader.load(_request);
}
function onLoadData(e:Event):void {
trace("onLoadData",e.target.data);
}
function onDataFailedToLoad(e:IOErrorEvent):void {
trace("onDataFailedToLoad:",e.text);
}
This all seems to work and is generating no errors or output, however my issue comes about when I use this next part of code (which I made)
function vpBuy(e:MouseEvent):void{
loadData();
if (e.target.data == "false") {
inf_a.visible = true;
inf_b.visible = true;
inf_c.visible = true;
inf_d.visible = true;
btn_ok.visible = true;
}
}
I get this error:
ReferenceError: Error #1069: Property data not found on
flash.display.SimpleButton and there is no default value. at
travoid_fla::MainTimeline/vpBuy() onLoadData
The part that is probably throwing this is:
if (e.target.data == "false") {
I was hoping e.target.data was what stored the value on the web page (which displays as false) but apparently not. With the code I found on the internet, what stores the information on the web page?
Thanks, Ethan Webster.

Answer 1

that's trying to check data before it's loaded. because data loading is a time based process, not instant. so, you've to make your data check condition wait for data really load
i think you should use a callback function for vpBuy from "onLoadData"
or you can try moving your data check conditional into onLoadData function like
function onLoadData(e:Event):void {
trace("onLoadData",e.target.data);
if (e.target.data == "false")
{
inf_a.visible = true;
inf_b.visible = true;
inf_c.visible = true;
inf_d.visible = true;
btn_ok.visible = true;
}
}