A variable is a container used to store data.
Types of Variable Declarations
JavaScript variables can be declared in 4 ways:
1. var — The Old Way
Before ES6, developers used var.
2. Automatically — The Old Way
automatically .js
name = "My JavaScript";
console.log(name);
// Output: My JavaScript
In older JavaScript, variables could be created without using var, let, or const.
Before ES6, developers used var.
3. let — The Modern Way
Introduced in ES6.
4. const — The Modern Way
Introduced in ES6.
Modern JavaScript Rule
Always declare variables using:
declare.js
const
let