// 构造函数
// function fn1() {

// };
// fn1();
// new fn1();

class Person1 {
    name:string;
    age:number;
    constructor(name:string,age:number) {
        this.name = name;
        this.age = age;
    }
    hello() {
        console.log("hi")
    }
}
let p2 = new Person1('八戒',10);
p2.hello()