使用call()方法与为继承设置原型属性

function Parent(name) {
  this.name = name;
}

Parent.prototype.sayHello = function() {
  console.log(`Hello, my name is ${this.name}`);
};

function Child(name, age) {
  Parent.call(this, name); // 调用父类构造函数
  this.age = age;
}

// 设置原型链以实现继承
Child.prototype = Object.create(Parent.prototype);
Child.prototype.constructor = Child;

const child = new Child('Alice', 10);
child.sayHello(); // 输出: Hello, my name is Alice

function Parent(name) {
  this.name = name;
}

Parent.prototype.sayHello = function() {
  console.log(`Hello, my name is ${this.name}`);
};

function Child(name, age) {
  this.name = name;
  this.age = age;
}

// 继承 Parent 的方法
Child.prototype = new Parent();
Child.prototype.constructor = Child;

const child = new Child('Bob', 8);
child.sayHello(); // 输出: Hello, my name is Bob