How to delete Javascript object property?

Question

I am trying to delete a object property which is shallow copy of another object. But the problem arises when I try to delete it, it never goes off while original value throws expected output.

var obj = {
    name:"Tom"
};

var newObj = Object.create(obj);
delete newObj.name;//It never works!

console.log(newObj.name);//name is still there

Answer 1

newObj inherits from obj.

You can delete the property by accessing the parent object:

delete Object.getPrototypeOf(newObj).name;

(which changes the parent object)

You can also shadow it, by setting the value to undefined (for example):

newObj.name = undefined;

But you can't remove the property on newObj without deleting it from the parent object as the prototype is looked up the prototype chain until it is found.