Kodni yozing, har bir amal uchun bitta satr:

1. Bo’sh ob’ekt yarating user.
2. John qiymati bilan name xususiyatini qo’shing.
3. Smith qiymati bilan surname xususiyatini qo’shing.
4. name qiymatini Pete ga o’zgartiring.
5. Ob’ektdan name xususiyatini olib tashlang.

let user = {}; user.name = "John"; user.surname = "Smith"; user.name = "Pete"; delete user.name;