调用父类中的父函数，而不是子(同名) javascript

class Parent {
  sayHello() {
    console.log('Hello from parent');
  }
}

class Child extends Parent {
  sayHello() {
    super.sayHello(); // 调用父类中的同名函数
    console.log('Hello from child');
  }
}

const child = new Child();
child.sayHello();

Hello from parent
Hello from child

function Parent() {}

Parent.prototype.sayHello = function() {
  console.log('Hello from parent');
}

function Child() {}

Child.prototype = Object.create(Parent.prototype); // 继承父类的原型链
Child.prototype.constructor = Child;

Child.prototype.sayHello = function() {
  Parent.prototype.sayHello.call(this); // 调用父类中的同名函数
  console.log('Hello from child');
}

const child = new Child();
child.sayHello();

Hello from parent
Hello from child

function Parent() {}

Parent.prototype.sayHello = function() {
  console.log('Hello from parent');
}

function Child() {
  Parent.call(this); // 调用父类中的同名函数
}

Child.prototype = Object.create(Parent.prototype); // 继承父类的原型链
Child.prototype.constructor = Child;

Child.prototype.sayHello = function() {
  console.log('Hello from child');
}

const child = new Child();
child.sayHello();

Hello from parent
Hello from child