Variables are one of the most fundamental concepts in JavaScript. They are used to store data that can be accessed and manipulated throughout a program. Whether you're storing a user's name, age, or any other information, variables make it possible to work with data efficiently.
In JavaScript, variables can be declared
using var, let, or const. The let keyword is commonly used for values that may change,
while const is used for values that remain constant. Although var is still supported, modern JavaScript development
typically favors let and const.
Example:
let name = "John";const age = 25;Understanding variables is essential because they form the foundation of programming logic. By mastering variables, beginners can build more dynamic, interactive, and efficient JavaScript applications.
