package { import flash.display.Sprite; import flash.text.*; public class FlashTest extends Sprite { public function FlashTest() { // write as3 code here.. var parseURL:Array = root.loaderInfo.url.split("/"); var swfName:String = parseURL.splice(parseURL.length - 1, 1); var baseURL:String = parseURL.join("/"); var txt:TextField = new TextField(); txt.text = "swfURL: " + root.loaderInfo.url + "\nswfName: " + swfName + "\nbaseURL: " + baseURL; txt.autoSize = TextFieldAutoSize.LEFT; addChild(txt); } } } swfの置いてあるBaseパスを取得