JavaScript Variable

The variable is a named container used to store a value. It’s like a label that points to a memory location where the value is stored. You can think of a variable as a container that can hold different types of data like numbers, strings, arrays, objects, and more.

To declare a variable in JavaScript, you can use the var, let, or const keywords. Here are some examples:

// Using the var keyword
var age = 25;
var name = 'John';

// Using the let keyword
let x = 10;
let y = 20;

// Using the const keyword
const PI = 3.1416;
const URL = 'https://www.example.com';

In the above examples, age, name, x, and y are variables that store numeric and string values, while PI and URL are variables that store constant values that cannot be changed later.