文字檔的檔名為test.txt，與fla檔放在同一個資料夾

AS2.0
var myLoader = new LoadVars();
myLoader.load("test.txt");

myLoader.onData = function(str:String) {
trace(str);
};

AS3.0
var myURLReq:URLRequest = new URLRequest();
myURLReq.url = "test.txt";
var myLoader:URLLoader = new URLLoader();
myLoader.addEventListener("complete", onC);

myLoader.load(myURLReq);

function onC(e) {
trace(myLoader.data);
}