(function () {
    const obj = {
        name: '孙悟空',
        age: 20
    };
    console.log(obj);
    class Person5 {
        constructor(name, age, sex) {
            this.name = name;
            this.age = age;
            this.sex = sex;
        }
    }
    let a = new Person5('猪八戒', 22, '男');
    console.log(a);
})();