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JavaScript Course for Beginners

Learn JavaScript step by step in 18 practical lessons: variables, functions, arrays, the DOM, events, forms, fetch and localStorage, ending with an interactive landing page.

Beginner to Intermediate 7 chapters 18 lessons Free
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7 chapters · 18 lessons

Every chapter and lesson has its own page. Open a chapter to see its lessons.

1 Chapter 1: Getting Started With JavaScript3 lessons

Add JavaScript to a page, store information in variables, and understand the types of data JavaScript works with.

01What Is JavaScript and How to Add It to HTMLComing soon 02JavaScript Variables: let vs const vs varComing soon 03JavaScript Data Types ExplainedComing soon
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2 Chapter 2: Logic and Loops2 lessons

Teach your code to make decisions with if/else and to repeat work with loops, the two building blocks of every program.

04JavaScript If Else StatementsComing soon 05JavaScript Loops: for, while and forEachComing soon
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3 Chapter 3: Functions, Arrays and Objects3 lessons

Package your code into reusable functions and organize data with arrays and objects, the tools behind every real JavaScript feature.

06JavaScript Functions for BeginnersComing soon 07JavaScript Arrays and Array MethodsComing soon 08JavaScript Objects ExplainedComing soon
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4 Chapter 4: The DOM: Changing the Page3 lessons

Use JavaScript to find elements on the page, react to clicks and other events, and change text, classes and styles.

09How to Select Elements in JavaScript (querySelector)Coming soon 10JavaScript Click Events and addEventListenerComing soon 11How to Change CSS With JavaScriptComing soon
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5 Chapter 5: Real Features Clients Ask For2 lessons

Build two features clients ask for all the time: a dark mode toggle that remembers the choice, and form validation with friendly, accessible error messages.

12How to Make a Dark Mode Toggle in JavaScriptComing soon 13JavaScript Form ValidationComing soon
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6 Chapter 6: Working With Data3 lessons

Load data from APIs with fetch, write clean asynchronous code with async/await, and save information in the browser with localStorage.

14How to Use Fetch API in JavaScriptComing soon 15Async/Await in JavaScript Explained SimplyComing soon 16How to Use localStorage in JavaScriptComing soon
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7 Chapter 7: Debug and Build2 lessons

Learn to read error messages and debug with DevTools, then combine everything into an interactive landing page.

17How to Debug JavaScript Errors in the ConsoleComing soon 18Build an Interactive Landing Page With JavaScriptComing soon
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What you’ll learn

  • How to add JavaScript to a page and see your code run
  • Variables, data types, conditions, loops and functions in plain English
  • Arrays and objects, the two ways JavaScript stores data
  • How to select elements, listen for clicks and change the page
  • Real features clients ask for: dark mode, FAQ accordions, form validation
  • How to load data from an API with fetch and async/await
  • How to find and fix errors in the browser console

Who this course is for

  • Anyone who has finished the HTML and CSS courses
  • Designers who want their designs to feel interactive
  • Freelancers who customize WordPress, Shopify or Webflow sites and keep hitting “you need a bit of JavaScript for that”

Before you start

Do I need to know HTML and CSS first?

Yes. JavaScript changes HTML and CSS, so you need to know the basics of both. The free HTML and CSS courses on this site cover them.

Is JavaScript hard to learn?

The basics are very learnable in a few weeks. It feels hard when you try to learn everything at once; this course goes one small step at a time.

Is JavaScript the same as Java?

No. They’re completely different languages that happen to have similar names.

What will I build?

An interactive landing page with a dark mode toggle, an FAQ accordion, a validated contact form and a live data section.

Anmol Sharma
Written by Anmol Sharma

Freelance UI/UX designer and web developer. 6 years, 50+ projects, clients in 30 countries. Hire me.

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