var Patterns = {};

Patterns.Nokia = function(){
    this.getPrice = function(){
        return 200;
    };
};

Patterns.Motorola = function(){
    this.getPrice = function(){
        return 100;
    };
};

Patterns.PhoneFactory = {
    getPhone : function(type){
        switch(type){
            case "Motorola":
                return new Patterns.Motorola();
            case "Nokia":
            default:
                return new Patterns.Nokia();
        }
    }
};

var phone = Patterns.PhoneFactory.getPhone("Nokia");
console.log(phone.getPrice());