js定义对象结构体

let person = {
    name: 'Alice',
    age: 25,
    greet: function() {
        console.log(`Hello, my name is ${this.name}`);
    }
};

person.greet(); // 输出: Hello, my name is Alice

function Person(name, age) {
    this.name = name;
    this.age = age;
    this.greet = function() {
        console.log(`Hello, my name is ${this.name}`);
    };
}

let person = new Person('Bob', 30);
person.greet(); // 输出: Hello, my name is Bob

class Person {
    constructor(name, age) {
        this.name = name;
        this.age = age;
    }

    greet() {
        console.log(`Hello, my name is ${this.name}`);
    }
}

let person = new Person('Charlie', 35);
person.greet(); // 输出: Hello, my name is Charlie

function Person(name, age) {
    this.name = name;
    this.age = age;
}

Person.prototype.greet = function() {
    console.log(`Hello, my name is ${this.name}`);
};

let person1 = new Person('Dave', 40);
let person2 = new Person('Eve', 45);
person1.greet === person2.greet; // 输出: true