SOURCE

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")
    }
}


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")
    }
}


var Tennis = function(){
    this.intro = '每年有很多网球系列赛'
}
Football.prototype = {
    getMember:function(){
        console.log("每个队伍需要1名队员")
    },
    getBallSize: function(){
        console.log("网球很小")
    }
}

//运动工厂
var SportsFactory = function(name){
    switch(name) {
        case 'NBA':
          return new Basketball();
        case 'wordCup':
          return new Football();
        case 'FrenchOpen':
          return new Tennis()
    }
}

var footnall = SportsFactory('wordCup');
console.log(footnall)
console.log(footnall.intro)
console.log(footnall.getMember)
footnall.getBallSize()

var Car = function(){};
Car.prototype = {
    getPrice:function(){
        console.log("-0-0-")
        // return new Error("抽象方法不能调用")
    }
}
subClass.prototype = new Car() //继承父类Car