ES6 对象解构赋值

阮一峰的es6中说对象解构赋值可以取到继承的属性。同样，也可以取到继承的方法

        const obj1 = {};
        const obj2 = { fooo: 'bar', hello: function(){ console.log("hello")} };
        Object.setPrototypeOf(obj1, obj2);

        const { fooo, hello: helloo } = obj1;
        console.log(fooo); // "bar"
        helloo(); //hello

        function Person(name, age) {
            this.name = name;
            this.age = age;
        }
        Person.prototype.sayName = function () {
            console.log("i am " + this.name);
        }
        function Student(name, age, grade) {
            Person.call(this, name, age);
            this.grade = grade;
        }
        Student.prototype = new Person();

        const s1 = new Student("s1", 1, 1);
        s1.sayName();
        const { sayName: sayname } = s1;
        console.log(sayname, s1);
        sayname.call(s1);