【说站】javascript new调用构造函数

/除了声明函数也可以写成表达式
//Let Person=function (name,age){
  function Person(name,age){
    //let o=new Object();
    this.name=name;
    this.age=age;
    this.sayName=function(){
        console.log(this.name);
    };
    //return o;
}
Person.prototype=[];
let p1=new Person("Greg",27);
console.log(Person.prototype);
console.log(p1.prototype);
console.log(p1);