结构图：
接口
var Bicycle = new Interface('Bicycle', ['assemble', 'wash', 'repair', 'getPrice']);
对象类
var AcmeComfortCuiser = function(){
};
AcmeComfortCuiser.prototype = {
assemble: function(){
},
wash: function(){
},
repair: function(){
},
getPrice: function(){
}
}
装饰类
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();
}
}
拓展类
var HeadlightDecorator = function(bicycle){
BicycleDecorator.call(this, bicycle);
};
extend(HeadlightDecorator, BicycleDecorator);
HeadlightDecorator.prototype.getPrice = function(){
return this.bicycle.getPrice() + 15.00;
}