GeezerVison

"Prototip" ni o'zgartirish

Quyidagi kodda biz new Rabbit ni yaratamiz va keyin uning prototipini o’zgartirishga harakat qilamiz.

Boshida bizda ushbu kod mavjud:

function Rabbit() {}
Rabbit.prototype = {
  eats: true,
};

let rabbit = new Rabbit();

alert(rabbit.eats); // true

1. Biz yana bitta matn qo’shdik (ta’kidlangan), hozir qanday alert ko’rsatilmoqda?

   function Rabbit() {}
   Rabbit.prototype = {
     eats: true
   };
   
   let rabbit = new Rabbit();
   
   Rabbit.prototype = {};
   
   alert( rabbit.eats ); // ?

2. …Va agar kod shunga o’xshash bo’lsa (bitta satr o’rni o’zgartirildi)?

   function Rabbit() {}
   Rabbit.prototype = {
     eats: true
   };
   
   let rabbit = new Rabbit();
   
   Rabbit.prototype.eats = false;
   
   alert( rabbit.eats ); // ?

3. Bu kabi (bitta satr o’rni o’zgartirildi)?

   function Rabbit() {}
   Rabbit.prototype = {
     eats: true
   };
   
   let rabbit = new Rabbit();
   
   delete rabbit.eats;
   
   alert( rabbit.eats ); // ?

4. Oxirgi variant:

   function Rabbit() {}
   Rabbit.prototype = {
     eats: true
   };
   
   let rabbit = new Rabbit();
   
   delete Rabbit.prototype.eats;
   
   alert( rabbit.eats ); // ?