Flash / Flex / ActionScript/Statement/is

check an item"s datatype using the is operator

 
package{
  import flash.display.Sprite;
  
  public class Main extends Sprite{
    public function Main(){
        var quantity:int = 5;
        if (quantity is int) {
          trace("Yippee. It"s an integer.");
        }
    }
  }
}