// 创建人类类
var Human = function(param) {
    this.skill = param && param.skill || '保密';
    this.hobyy = param && param || '保密';
}
Human.prototype = {
    getSkill : function() {
        return this.skill;
    },
    getHobby : function() {
        return this.hobby;
    } 
}

// 实例化姓名类
var Named = function(name) {
    var that = this;
    (function(name, that) {
        that.wholeName = name;
        if (name.indexOf(' ') > -1) {
            that.firstName = name.slice(0, name.indexOf(' '));
            that.secondName = name.slice(name.indexOf(' '));
         }
    })(name, that);
}

// 实例化职位
var Work = fucntion(work) {
    var that = this;
    (function(work, that) {
        switch(work) {
            case 'code':
                that.work = '程序员';
                that.workDescript = '撸一万行代码';
                break;
            case 'book':
                that.work = '媒体从业者';
                that.workDescript = '下笔如有神';
                break;
             case 'teach':
                that.work = '教授';
                that.workDescript = '百年育人';
                break;
             default :
                that.work = work;
                thar.workDescript = '对不起，我们还不清楚您职位的相关描述';
        }
    })(work, that);
}
Work.prototype.changeWork = function(work) {
    this.work = work;
}
Work.prototype.changeDescript = function(text) {
    this.workDescript = text;
}

/***
* 应聘者建造者 
* 参数 name : 姓名
* 参数 work : 职位
**/
var Person = function(name, work) {
    var _person = new Human();
    _person.name = new Named(name);
    _person.work = new Work(work);
    return _person;
}


// 实例测试
var person = new Person('zhang san', 'code');

console.log(person.skill);
console.log(person.name.firstName);
console.log(person.work.work);
console.log(person.work.workDescript);
person.work.changeDescript('更改后的描述是：你好！');
console.log(person.work.workDescript);