JavaScript/Basic/3variable.js at main · AZAD-CYBER/JavaScript

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In a programming language, variables are used to store data values.

JavaScript uses the keywords var, let and const to declare variables.

An equal sign is used to assign values to variables.

let x; //The let keyword tells the browser to create variables:

x = 6;

console.log(x);

identifiers are used to name variables and keywords, and functions.

All JavaScript identifiers are case sensitive.

A letter (A-Z or a-z)

A dollar sign ($)

Or an underscore (_)

let lastName, lastname; // declaration

lastName = "Doe"; //assignment

lastname = "Peterson";

console.log(lastName, lastname);

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