在javascript中调用父属性和函数？

const parent = {
  name: 'Parent',
  greet() {
    console.log(`Hello, I'm ${this.name}`);
  }
};

const child = Object.assign({}, parent, {
  name: 'Child'
});

// 调用父对象的greet方法
child.greet(); // 输出: Hello, I'm Child

class Parent {
  constructor() {
    this.name = 'Parent';
  }

  greet() {
    console.log(`Hello, I'm ${this.name}`);
  }
}

class Child extends Parent {
  constructor() {
    super(); // 调用父类的构造函数
    this.name = 'Child';
  }

  greet() {
    super.greet(); // 调用父类的greet方法
    console.log('Nice to meet you!');
  }
}

const child = new Child();
child.greet();
// 输出:
// Hello, I'm Child
// Nice to meet you!

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

Parent.prototype.greet = function() {
  console.log(`Hello, I'm ${this.name}`);
};

function Child() {
  Parent.call(this); // 调用父类的构造函数
  this.name = 'Child';
}

// 设置Child的原型为Parent的实例，实现继承
Child.prototype = Object.create(Parent.prototype);
Child.prototype.constructor = Child;

const child = new Child();
child.greet(); // 输出: Hello, I'm Child

class Example {
  constructor() {
    this.value = 42;
  }

  printValue() {
    setTimeout(() => {
      console.log(this.value); // 使用箭头函数保持this上下文
    }, 1000);
  }
}

const example = new Example();
example.printValue(); // 输出: 42