zedia flash blog » Strings http://www.zedia.net Flash, ActionScript, SEO and everything in between Wed, 21 Jul 2010 17:07:49 +0000 en hourly 1 http://wordpress.org/?v=3.0 generate random Strings in AS2 or AS3 http://www.zedia.net/2008/generate-random-strings-in-as2-or-as3/ http://www.zedia.net/2008/generate-random-strings-in-as2-or-as3/#comments Sat, 10 May 2008 23:03:57 +0000 zedia.net http://www.zedia.net/2008/generate-random-strings-in-as2-or-as3/ I was searching for a function to generate random Strings either in AS2 or in AS3 but I couldn’t find any so I made my own using code from a typewriter effect, but I can’t seem to find the page anymore. I use this code when I load dynamic content from php and such and I don’t want flash to cache my request. Here is an ActionScript 2 version of the code:

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function generateRandomString(newLength:Number):String{
  var a:String = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
  var alphabet:Array = a.split("");
  var randomLetter:String = "";
  for (var i:Number = 0; i < newLength; i++){
    randomLetter += alphabet[Math.floor(Math.random() * alphabet.length)];
  }
  return randomLetter;
}

For the ActionScript 3 version of it I made some optimizations and I created a class with the static method in it here is the code:

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package net.zedia.utils{
  public final class StringUtils{
    public static function generateRandomString(newLength:uint = 1, userAlphabet:String = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"):String{
      var alphabet:Array = userAlphabet.split("");
      var alphabetLength:int = alphabet.length;
      var randomLetters:String = "";
      for (var i:uint = 0; i < newLength; i++){
        randomLetters += alphabet[int(Math.floor(Math.random() * alphabetLength))];
      }
      return randomLetters;
    }
  }
}

here is how you use it:

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import net.zedia.utils.StringUtils;
 
trace (StringUtils.generateRandomString(4));//for a random string of 4 characters
trace (StringUtils.generateRandomString(4, "ROGER"));//for a random string of 4 characters using only the following letters: ROGER

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