AS2: AgeChecker

Posted on
6/2/2008 in AS2 • My Classes

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I had a need to do some age checking on the project that I'm currently working on. I figured there had to be something out there for this already and I googled away for an age checker in Flash. I found a very handy little function written by Calvin Ly and with his permission I simply wrapped this into a class and am posting it here for anyone who may need it in the future. Thanks Calvin!

PLAIN TEXT
Actionscript:
  1. /**
  2. * A utility class that uses a static method to check whether a user's age is older than the age to check against.
  3. *
  4. * @usage
  5. * <code>
  6. * <pre>
  7. import com.reintroducing.utils.AgeChecker;
  9. var isOldEnough:Boolean = AgeChecker.checkAge(21, 01, 19, 1983);
  10. * </pre>
  11. * </code>
  12. *
  13. * @author Calvin Ly [http://www.calvinly.com]
  14. * @author Conversion to class by Matt Przybylski [http://www.reintroducing.com]
  15. * @version 1.0
  16. */
  17.  
  18. class com.reintroducing.utils.AgeChecker
  19. {
  20. //- PRIVATE VARIABLES -------------------------------------------------------------------------------------
  21.     
  22.    
  23.    
  24. //- PUBLIC VARIABLES --------------------------------------------------------------------------------------
  25.    
  26.    
  27.    
  28. //- CONSTRUCTOR -------------------------------------------------------------------------------------------
  29.    
  30.     public function AgeChecker()
  31.     {
  32.        
  33.     }
  34.    
  35. //- PRIVATE METHODS ---------------------------------------------------------------------------------------
  36.    
  37.    
  38.    
  39. //- PUBLIC METHODS ----------------------------------------------------------------------------------------
  40.    
  41.     /**
  42.      * Checks whether the user's age is permissible or not.  The month and day can be passed in with leading zeros or not.
  43.      * The year should be passed in as the full year (ex: 1983).
  44.      *
  45.      * @usage <pre><code>AgeChecker.checkAge($ageToCheck, $month, $day, $year)</code></pre>
  46.      *
  47.      * @param $ageToCheck The age you want to test against
  48.      * @param $month The user's input month
  49.      * @param $day The user's input day
  50.      * @param $year The user's input year
  51.      *
  52.      * @return A boolean value that states whether the age check has passed or not.
  53.      */
  54.    
  55.     public static function checkAge($ageToCheck:Number, $month:Number, $day:Number, $year:Number):Boolean
  56.     {
  57.         var todayDate:Date = new Date();
  58.         var currentMonth:Number = (todayDate.getMonth() + 1);
  59.         var currentDay:Number = todayDate.getDate();
  60.         var currentYear:Number = todayDate.getFullYear();
  61.        
  62.         var userMonth:Number = $month;
  63.         var userDay:Number = $day;
  64.         var userYear:Number = $year;
  65.        
  66.         var yearDiff:Number = (currentYear - userYear);
  67.        
  68.         if (yearDiff == $ageToCheck)
  69.         {
  70.             // AGE IS EQUAL to VALID AGE ... need to check month and day
  71.             var monthDiff:Number = (currentMonth - userMonth);
  72.            
  73.             if (monthDiff == 0)
  74.             {
  75.                 // MONTH IS EQUAL ... need to check day
  76.                 var dayDiff:Number = currentDay - userDay;
  77.                
  78.                 if (dayDiff>= 0)
  79.                 {
  80.                     // DAY IS EQUAL OR GREATER .. PASS
  81.                     return true;
  82.                 }
  83.                 else
  84.                 {
  85.                     // DAY INVALID ... too young
  86.                     return false;
  87.                 }
  88.                    
  89.             }
  90.             else if (monthDiff <0)
  91.             {
  92.                 // MONTH INVALID ... too young
  93.                 return false;
  94.             }
  95.             else
  96.             {
  97.                 // AGE PASS
  98.                 return true;
  99.             }
  100.         }
  101.         else if (yearDiff <$ageToCheck)
  102.         {
  103.             // YEAR INVALID ... too young
  104.             return false;
  105.         }
  106.         else
  107.         {
  108.             // OVER AGE in YEARS
  109.             return true;
  110.         }
  111.     }
  112.    
  113. //- EVENT HANDLERS ----------------------------------------------------------------------------------------
  114.    
  115.    
  116.    
  117. //- GETTERS & SETTERS -------------------------------------------------------------------------------------
  118.    
  119.    
  120.    
  121. //- HELPERS -----------------------------------------------------------------------------------------------
  122.    
  123.     public function toString():String
  124.     {
  125.         return "com.reintroducing.utils.AgeChecker";
  126.     }
  127.    
  128. //- END CLASS ---------------------------------------------------------------------------------------------
  129. }

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2 Comments
Comment by JGP on June 7, 2008 @ 8:41 pm

You should add in some type of validation if nothing is entered. Currently you setup will return "true" if all or some of the parameters are missing.

PLAIN TEXT
Actionscript:
  1. if( $ageToCheck || $month || $day || $year == null )
  2.     {
  3.         return false;
  4.     }

Comment by Matt Przybylski on June 7, 2008 @ 9:48 pm

no, the class is just meant to check for a proper age, it's up to you and your application to do the extra checking that goes into verifying if a user has entered a proper date or anything at all.

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