// compile with: jsc inheritance.js

  class Base {
    protected var i : int = 5;
    public function PrintInBase() : void {
      print("i is " +  i);
    }
  }

  class Derived extends Base {
    var d : double = 7.3;
    public function PrintInDerived() : void {
      print("i is " + i + ", d is " + d);
    }
  }

  var b : Base = new Base();
  print("b:");
  b.PrintInBase();
  var d : Derived = new Derived();
  print("d:");
  d.PrintInBase();
  d.PrintInDerived();

People who read this tip also read these tips:

• Deriving an Image's Size
• The Interface's Advantages
• Using the private Modifier
• Static Elements
• Popping Up a Windows Form