js装饰设计模式详解

var Bicycle = new Interface('Bicycle', ['assemble', 'wash', 'repair', 'getPrice']);

var AcmeComfortCuiser = function(){
  
};
AcmeComfortCuiser.prototype = {
  assemble: function(){
    
  },
  wash: function(){
    
  },
  repair: function(){
    
  },
  getPrice: function(){
    
  }
}

var BicycleDecorator = function(bicycle){
  Interface.ensureImplements(bicycle, Bicycle);
  this.bicycle = bicycle;
};
BicycleDecorator.prototype = {
  assemble: function(){
    return this.bicycle.assemble();
  },
  wash: function(){
    return this.bicycle.wash();
  },
  repair: function(){
    return this.bicycle.repair();
  },
  getPrice: function(){
    return this.bicycle.getPrice();
  }
}

  var HeadlightDecorator = function(bicycle){
    BicycleDecorator.call(this, bicycle);
  };
  extend(HeadlightDecorator, BicycleDecorator);
  HeadlightDecorator.prototype.getPrice = function(){
    return this.bicycle.getPrice() + 15.00;
  }