In this blog, we will learn about object mutation in JavaScript. We will learn why it is so important to learn about mutation in Javascript. We will also discuss why mutation is bad and how to solve data mutation problem.

What is data mutation in JavaScript?

Mutation means a change in the form or nature of the original data. In JavaScript, there are two data types: 1) primitive and 2) non-primitive/reference data types.

Primitive data types are Boolean, Number, String, Null and Undefined. Primitive data types are referenced by value. Primitive types in JavaScripts are immutable, meaning that if we change one then a new instance is created as a result.

Reference data types are Objects and Arrays. Reference types in JavaScript are mutable, meaning that the state and fields of mutable types can be changed. No new instance is created as a result…

#js #javascript