Mastering Javascript: How to clone on object in javascript #javascript #object #interviewtips

Javascript How to clone an object in JS.

In JavaScript, you can clone an object using several methods:

Code:
let obj1 = { a: 1, b: 2 };

2. Spread Operator: The spread operator allows you to spread the properties of an object into a new object. It is also a shallow copy.

Code:
let obj1 = { a: 1, b: 2 };
let obj2 = { ...obj1 };

3. JSON.parse() and JSON.stringify() methods: This method creates a deep copy of an object, but it has some limitations. It cannot clone functions or properties that have undefined or NaN values.

Code:
let obj1 = { a: 1, b: 2 };

Note that when cloning an object, if the object contains nested objects or arrays, those objects and arrays are not cloned recursively. To make a deep clone of an object with nested objects and arrays, you will need to use a more sophisticated cloning technique.