Js | 设计模式（三）建造者模式

将一个复杂对象的构建层和表示层相分离，同样的构建过程可以采用不同的表示

工厂模式主要是用来创建对象的实例（简单工厂模式，工厂方法模式）或者是类簇（抽象工厂模式），关心的是最终的产出是什么，所以工厂模式我们得到的是对象的实例或者对象的类簇。然而建造者模式在创建对象的过程中则更为复杂一些。虽然目的也是为了创建对象，但是更关心的创建对象的整个过程或者说是每一个细节。

	var Human = function (param) { 
            this.name = param && param.name || '保密';
            this.age  = param && param.age || '保密';
        }
        Human.prototype = {
            constructor:Human,
            getName:()=>{
                return this.name;
            },
            getAge:()=>{
                return this.age;
            }
        }
        var Name = function (name) { 
            var that = this;
            (function(name,that) {
                this.wholeName = name;
                if(name.indexOf(' ')>-1){
                    that.firstName = name.slice(0,name.indexOf(' '));
                    that.secondName = name.slice(name.indexOf(' '));
                }
            })(name,that)
        }
        var Work = function(work) {
            var that = this;
            ((work,that)=>{
                switch(work){
                    case 'NetWork' :
                        that.work = '网络工程师';
                        that.wordDesc = '代码是我快乐';
                        break;
                    case 'UI' :
                        that.work = '设计师';
                        that.wordDesc = '设计更似艺术';
                        break;
                    default :
                        that.work = work;
                        that.wordDesc = '对不起，我们还不清楚你的工作';
                }
            })(work,that);
        }
        //更换期望职位以及描述
        Work.prototype.changeWork = function(work) {
            this.work = work;
        }

        Work.prototype.changeDesc = function(desc) {
            this.wordDesc = desc;
        }

        //创建一个应聘者
        var Person = function(name,work) {
            var _person = new Human();
            _person.name2 = new Name(name);
            _person.work = new Work(work);
            return _person;
        }

        var person = new Person('小陈','IT');
        console.log(person.name);
        console.log(person.age);
        console.info(person.work);
        person.work.changeDesc('一撸代码就疯狂');
        console.info(person.work);