Js继承之组合模式

组合模式

• 前置知识 原型 原型链 apply

举个例子

function Person(name, age) {
    this.name = name??"";
    this.age = age??"";
};

Person.prototype.say = function () {
    console.log('我的名字是' + this.name + '，今年' + this.age + '岁')
}

function Student(name, age, gender, score) {
    Person.apply(this, [name, age]);
    this.gender = gender??"";
    this.score = score??"";
}
Student.prototype = new Person();

console.log(new Student('ZhangSan', 20, '男', 100));