Evt.target.data what does this mean?

Hi,

I’m just finishing a book on AS3 and have come across this piece of code ‘evt.target.data’. Can anyone tell me what it does as it doe not explain in the book. The tutorial is loading in external HTML text and CSS Stylesheets, i understand everything except this…Here is the code, there is more code in the tutorial but im not sure how relevant it is to this post…

Thanks…

private function onLoadCSS(evt:Event):void {
            _css = new StyleSheet();
            _css.parseCSS(**evt.target.data**);
            _htmlFile = new URLLoader;
            _htmlFile.addEventListener(Event.COMPLETE, onLoadHTML, false, 0, true);
            _htmlFile.addEventListener(IOErrorEvent.IO_ERROR, ioErrorHandler, false, 0, true);
            _htmlFile.load(new URLRequest("demo.html"));
        }
        
        private function onLoadHTML(evt:Event):void {
            _html = **evt.target.data**;
            initTextField();
        }