Javascript Class Call methods defined in parent class via super keyword

class Ship{ //  w ww  .  j  av  a2  s  . com
    constructor(name, type, color){ 
        this.name = name; 
        this.type = type; 
        this.color = color; 
    } 

        shipName(){ 
           return 'I am ' + this.name; 
        } 

        shipType(){ 
           return   'I am type: ' + this.type; 
        } 

        shipColor(){ 
           return   'My color is ' + this.color; 
        } 
} 

class SpaceShip extends Ship{ 
      constructor(type, name, color){ 
          super(type, name, color) 
      } 

      spaceShipName(){ 
          return super.shipName(); 
      } 

      spaceShipType(){ 
          return super.shipType(); 
      } 

      spaceShipColor(){ 
          return super.shipColor(); 
      } 
} 

let planetExpress = new SpaceShip('Planet Express Ship', 'Delivery Ship' ,'Green'); 

console.log(planetExpress.spaceShipName()); // returns I am Planet Express Ship
console.log(planetExpress.shipType());  // return I am type: 'Delivery Ship
console.log(planetExpress.spaceShipColor()); // returns My color is Green