一、简单工厂模式

1. 用类实例化对象实现

// 篮球基类
var Basketball = function() {
    this.intro = "篮球盛行于美国";
};
Basketball.prototype = {
    getMember :  function() {
        console.log("每个队伍需要5名队员");
    },
    getBallsize: function() {
        console.log("篮球很大");
    }
};
// 足球基类
var Football = function() {
    this.intro = "足球在世界范围内很流行";
};
Football.prototype = {
    getMember :  function() {
        console.log("每个队伍需要11名队员");
    },
    getBallsize: function() {
        console.log("足球很大");
    }
};
// 运动工厂
var SportsFactory = function(name) {
    switch(name) {
        case 'NBA':
            return new Basketball();
        case 'wordcup':
            return new Football();
    }
}
var football = SportsFactory("wordcup");
console.log(football);
console.log(football.intro);
football.getMember();

2. 通过创建新的对象并扩展属性和方法来实现

// 工厂模式并
function createBook(name, time, type) {
    // 创建一个对象，并对对象扩展属性和方法
    var o = new Object();
    o.name = name;
    o.time = time;
    o.type = type;
    o.getName = function() {
        console.log(this.name);
    };
    // 将对象返回
    return o;
}

var book1 = createBook("js book", 2014, "js");
var book2 = createBook("css book", 2013, "css");

book1.getName();
book2.getName();

我觉得上面