function Person() {
}
Person.prototype.name = 'lary';
let person = new Person();
console.log(person.__proto__=== Person.prototype);
console.log(Person === Person.prototype.constructor);
console.log(Object.getPrototypeOf(person)==Person.prototype);
console.log(person.constructor===Person);
person.name = 'xiaoming';
console.log(person.name);
delete person.name;
console.log(person.name);
