Deep Clone Object Using JavaScript

How to Deep Clone an Object Using JavaScript ?

You can use Lodash library to deep clone an object.

Start by importing the library.

<script  src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.21/lodash.min.js"  integrity="sha512-WFN04846sdKMIP5LKNphMaWzU7YpMyCU245etK3g/2ARYbPK9Ub18eG+ljU96qKRCWh+quCY7yefSmlkQw1ANQ=="  crossorigin="anonymous"  referrerpolicy="no-referrer"></script>

Once you have the library, you can use cloneDeep method to clone the original object.

let originalObj = {
  keys: [1, 2, 3],
  empInfo: {
    firstName: 'jay',
    lastName: 'raj',
    age: 10
  }
};

let clonedObj = _.cloneDeep(originalObj);
clonedObj.empInfo = null;

console.log('Original object is ', originalObj);
console.log('Cloned obj is ', clonedObj);

//-   "Original object is ",
// { empInfo: 
//      { age: 10, firstName: "jay", lastName: "raj" }, keys: [1, 2, 3] }

//    "Cloned obj is ", 
// { empInfo: null, keys: [1, 2, 3] }