How to check an action is complete

Question

I have some code, seen below, that creates a typing... thing.
Basically when you start the code, it creates 26 random letter jumbles on screen, each beginning with a different letter of the alphabet.
You then type these jumbles, one by one, to make them disappear.
How It works as I have posted it below is that you have to type the first letter twice, but if you have a quick look through you can see there is a (red) commented out line that I want to include in order to delete the first letter first try.
But it seems that it can't parse the previous action fast enough in order to carry it out.
Is there a way to tell flash to wait until the previous action has completed before it tries to parse the one at hand?
var available:int=0;
var letterCode:int;
var keyPressed:String;
var focusWord:TextField;
var aWord:TextField;
var wordArray:Array = new Array;
var wordsFormat:TextFormat = new TextFormat;
     wordsFormat.size = 20;
     wordsFormat.font = "Cooper Std";
     wordsFormat.align = TextFormatAlign.CENTER;
var centerFormat:TextFormat = new TextFormat;
     centerFormat.size = 100;
     centerFormat.color = 0xFFFFFF;
for(var i:int = 0; i<26; i++){
     newWord();
function newWord():void{
     letterCode = 65;
     wordsFormat.color = Math.random() * 0x999999 + 0x444444;
     aWord = new TextField;
     addChild(aWord);
     aWord.defaultTextFormat = wordsFormat;
     aWord.y = Math.random() * (stage.stageHeight-25);
     aWord.x = Math.random() * (stage.stageWidth-100);
     aWord.width = 140;
     testLetter()               
function testLetter():void{
     if (wordArray.length>0){
          for(var j:int = 0; j<wordArray.length; j++){
               if (wordArray[j].text.charAt(0) == String.fromCharCode(letterCode))
                    available++
          if (available==0)
               fillLetters();
          else{
               available=0
               letterCode++;
               testLetter();
     else fillLetters();
function fillLetters():void{
     aWord.text = String.fromCharCode(letterCode);
     for (var k:int = 0; k < Math.random()*5+3; k++){
          letterCode = Math.random()*26+65;
          aWord.appendText(String.fromCharCode(letterCode));
     wordArray.push(aWord);
     if (i > 24)
          stage.addEventListener (KeyboardEvent.KEY_DOWN, checkKey);
function checkKey (e:KeyboardEvent):void{
     keyPressed = String.fromCharCode(e.charCode).toUpperCase();
     for(var l:int = 0; l<wordArray.length; l++){
          if (wordArray[l].text.charAt(0) == keyPressed)
                    focusWord = wordArray[l];
//                    focusWord.replaceText(0, 1,"");
                    stage.removeEventListener (KeyboardEvent.KEY_DOWN, checkKey);
                    stage.addEventListener(KeyboardEvent.KEY_DOWN, deleteText);
function deleteText (e:KeyboardEvent):void{
     keyPressed = String.fromCharCode(e.charCode).toUpperCase();
     if (keyPressed == focusWord.text.charAt(0)){
          focusWord.replaceText(0, 1,"");
          if (focusWord.length == 0){
               stage.removeEventListener(KeyboardEvent.KEY_DOWN, deleteText);
               stage.addEventListener (KeyboardEvent.KEY_DOWN, checkKey);

Answer 1

var available:int = 0;
var letterCode:int;
var keyPressed:String;
var focusWord:TextField;
var aWord:TextField;
var wordArray:Array = new Array  ;
var wordsFormat:TextFormat = new TextFormat  ;
wordsFormat.size = 20;
wordsFormat.font = "Cooper Std";
wordsFormat.align = TextFormatAlign.CENTER;
var centerFormat:TextFormat = new TextFormat  ;
centerFormat.size = 100;
centerFormat.color = 0xFFFFFF;
for (var i:int = 0; i<26; i++)
newWord();
function newWord():void
letterCode = 65;
wordsFormat.color = Math.random() * 0x999999 + 0x444444;
aWord = new TextField  ;
addChild(aWord);
aWord.defaultTextFormat = wordsFormat;
aWord.y = Math.random() * (stage.stageHeight-25);
aWord.x = Math.random() * (stage.stageWidth-100);
aWord.width = 140;
testLetter();
function testLetter():void
if (wordArray.length > 0)
  for (var j:int = 0; j<wordArray.length; j++)
   if (wordArray[j].text.charAt(0) == String.fromCharCode(letterCode))
    available++;
  if (available == 0)
   fillLetters();
  else
   available = 0;
   letterCode++;
   testLetter();
else
  fillLetters();
function fillLetters():void
aWord.text = String.fromCharCode(letterCode);
for (var k:int = 0; k < Math.random()*5+3; k++)
  letterCode = Math.random() * 26 + 65;
  aWord.appendText(String.fromCharCode(letterCode));
wordArray.push(aWord);
if (i > 24)
  stage.addEventListener(KeyboardEvent.KEY_DOWN, checkKey);
function checkKey(e:KeyboardEvent):void
keyPressed = String.fromCharCode(e.charCode).toUpperCase();
for (var l:int = 0; l<wordArray.length; l++)
  if (wordArray[l].text.charAt(0) == keyPressed)
   focusWord = wordArray[l];
   focusWord.replaceText(0, 1,"");
   stage.removeEventListener(KeyboardEvent.KEY_DOWN, checkKey);
   stage.addEventListener(KeyboardEvent.KEY_DOWN, deleteText);
function deleteText(e:KeyboardEvent):void
keyPressed = String.fromCharCode(e.charCode).toUpperCase();
if (keyPressed == focusWord.text.charAt(0))
  focusWord.replaceText(0, 1,"");
  if (focusWord.length == 0)
   stage.removeEventListener(KeyboardEvent.KEY_DOWN, deleteText);
   stage.addEventListener(KeyboardEvent.KEY_DOWN, checkKey);