JavaScript Basics: Variables & Data Types

What you will learn

Master the fundamental building blocks of JavaScript! Learn variables, strings, numbers, booleans, and basic operations through hands-on practice. Perfect starting point for complete beginners.

10 Focused Challenges
Complete Beginner Friendly
Variables Mastery
Data Types Deep Dive
Interactive Explanations
Mobile Friendly

Course Progress

  1. 1

    Hello World!

    Welcome to JavaScript! Let's start with the most fundamental concept - displaying output.

  2. 2

    Numbers and Math

    JavaScript can work with numbers and perform calculations.

  3. 3

    Working with Text

    In programming, text is called a "string". Let's learn how to combine strings.

  4. 4

    Variables - Storing Values

    Variables are like boxes that store values. Let's create our first variable!

  5. 5

    Variables with Numbers

    Variables can store numbers too! Let's do some math with variables.

  6. 6

    Multiple Variables

    Let's work with several variables at once and see how they interact.

  7. 7

    Updating Variables

    Variables can change! Let's see how to update them with new values.

  8. 8

    Data Types in JavaScript

    JavaScript has different types of data. Let's see the main ones!

  9. 9

    Comparing Values

    JavaScript can compare values and give true/false answers.

  10. 10

    Template Literals - Modern Strings

    There's a modern, easier way to create strings with variables!

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