1.第三行代碼沒(méi)有理解。第三行應(yīng)該是實(shí)現(xiàn)了 給super_robot添加 data作為原型對(duì)象。那為什么不是 SuperRobot.__proto__=data;而是say.__proto__=data; ??2.function SuperRobot(data) {    var say = function() { return "Hello World!"; };    say.__proto__=data;    return say;}var data = { name:"atom", age: 5};var super_robot = SuperRobot(data);console.log(super_robot());            //Hello World!console.log(super_robot.age);        //5console.log(typeof super_robot);     //function