js 如何定义一个方法有哪些

function myMethod() {
    console.log('This is a method.');
}

const myObject = {
    myMethod: function() {
        console.log('This is a method inside an object.');
    }
};

const myObject = {
    myMethod() {
        console.log('This is a method inside an object using shorthand.');
    }
};

function MyConstructor() {
    this.myMethod = function() {
        console.log('This is a method inside a constructor.');
    };
}

const instance = new MyConstructor();
instance.myMethod();

class MyClass {
    myMethod() {
        console.log('This is a method inside a class.');
    }
}

const instance = new MyClass();
instance.myMethod();

function MyConstructor() {}

MyConstructor.prototype.myMethod = function() {
    console.log('This is a method defined on the prototype.');
};

const instance = new MyConstructor();
instance.myMethod();