advanced

Deep Clone Object

Create a deep copy of a nested object.

Understand shallow vs deep copying.

📚 Concepts & Theory

Deep Clone

JSON.parse(JSON.stringify(obj))
// or structuredClone(obj)

🎯 Your Challenge

Write deepClone that creates a deep copy.

📝 Starter Code

JavaScript

function deepClone(obj) {
  // Your code here
}

const original = {a: 1, b: {c: 2}};
const copy = deepClone(original);

Solution

JavaScript

function deepClone(obj) {
  return JSON.parse(JSON.stringify(obj));
}

const original = {a: 1, b: {c: 2}};
const copy = deepClone(original);
copy.b.c = 999;
console.log(original.b.c); // Still 2

Explanation

JSON stringify/parse creates deep copy.

❓ Frequently Asked Questions

Cannot clone functions or circular refs