js中类方法和原型方法的区别

class MyClass {
  // 类方法
  static classMethod() {
    console.log('This is a class method');
  }

  constructor(name) {
    this.name = name;
  }

  // 原型方法
  prototypeMethod() {
    console.log(`Hello, ${this.name}! This is a prototype method`);
  }
}

// 调用类方法
MyClass.classMethod(); // 输出: This is a class method

// 创建实例并调用原型方法
const instance = new MyClass('Alice');
instance.prototypeMethod(); // 输出: Hello, Alice! This is a prototype method

class MyClass {
  constructor(name) {
    this.name = name;
    this.sayHello = this.sayHello.bind(this); // 使用bind绑定this
  }

  sayHello() {
    console.log(`Hello, ${this.name}!`);
  }
}

const instance = new MyClass('Bob');
setTimeout(instance.sayHello, 1000); // 输出: Hello, Bob!

class MyClass {
  constructor(name) {
    this.name = name;
  }

  sayHello() {
    console.log(`Hello, ${this.name}!`);
  }
}

// 所有实例共享同一个sayHello方法
const instance1 = new MyClass('Alice');
const instance2 = new MyClass('Bob');