js定义类的静态方法有哪些

class MyClass {
  static myStaticMethod() {
    return 'This is a static method';
  }
}

// 调用静态方法
console.log(MyClass.myStaticMethod()); // 输出: This is a static method

class Utility {
  static add(a, b) {
    return a + b;
  }

  static async fetchData(url) {
    const response = await fetch(url);
    return response.json();
  }
}

console.log(Utility.add(1, 2)); // 输出: 3
Utility.fetchData('https://api.example.com/data').then(data => console.log(data));

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

  static myStaticMethod() {
    // 这里无法访问 this.value
    return 'This is a static method';
  }

  myInstanceMethod() {
    return `Value: ${this.value}`;
  }
}

const instance = new MyClass(10);
console.log(instance.myInstanceMethod()); // 输出: Value: 10

class ParentClass {
  static myStaticMethod() {
    return 'Parent static method';
  }
}

class ChildClass extends ParentClass {
  static myStaticMethod() {
    return 'Child static method';
  }
}

console.log(ParentClass.myStaticMethod()); // 输出: Parent static method
console.log(ChildClass.myStaticMethod()); // 输出: Child static method