Not a Number: use the top-level function isNaN() : Number « Data Type « Flash / Flex / ActionScript






  1. Flash / Flex / ActionScript
  2. Data Type
  3. Number

Not a Number: use the top-level function isNaN()

 

package{
  import flash.display.Sprite;
  
  public class Main extends Sprite{
    public function Main(){
         var n:Number;
         trace(n); //NaN
         trace(isNaN(n)); //true
         trace(n == NaN); //false! That's why you use isNaN()
         n = Number("this won't convert into a number");
         trace(isNaN(n)); //true
         n = 10;
         trace(isNaN(n)); //false
    }
  }
}








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