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The JavaScript Interview Handbook: 100+ Interview Questions

Challenge: Shallow to Deep

This challenge will test your understanding of shallow copying and your skills in implementing deep copying in JavaScript.

We'll cover the following...

Problem statement #

Study the code below and run it.

Node.js
const girl = {
  name: 'Anna',
  info: { age: 20, number: 123 }
};
const newGirl = { ...girl };
newGirl.info.age = 30;
console.log(girl.info.age)

As explained in a previous lesson, newGirl is a shallow ...