What is variable in javascript? || Why we are using variables in javascript. types of variables.
In JavaScript, a variable is a container that stores data values. Variables allow you to save and manipulate information in your code, making programs dynamic and efficient.
Why Do We Use Variables in JavaScript?
Store and reuse data – Avoid hardcoding values.
Dynamic operations – Change values based on conditions.
Improve readability – Use meaningful names for data.
Memory management – Efficiently handle data in applications.
Types of Variables in JavaScript
var – Function-scoped, can be redeclared & updated.
let – Block-scoped, can be updated but not redeclared.
const – Block-scoped, cannot be updated or redeclared (constant value).