{# Course schema: this is what turns a blue link into a result that shows the provider and the level. Only facts that are actually true go in here. #}
ExpoCoder Sign in Start free

JavaScript

Learn JavaScript from scratch: variables, types, loops, functions, arrays and objects, the DOM and events, then classes, async/await and modules.

33 lessons about 11 hours Medium Free with a free account
Learn it by writing it.

Every lesson runs real code in your browser, checked the moment you submit. No installing anything, no setup, no waiting.

Start JavaScript free

What this course covers

  1. What Is JavaScript?
  2. Running JavaScript: Console & Script
  3. Variables: let, const & var
  4. Values & Types
  5. Strings & Template Literals
  6. Numbers & Math
  7. Booleans & Comparison
  8. Decisions: if / else / else if
  9. switch / case
  10. Ternary & Short-circuit
  11. Loops: for & while
  12. Looping with for-of & for-in
  13. Functions
  14. Arrow Functions
  15. Arrays
  16. Array Methods: map, filter, reduce
  17. Objects
  18. Looping Objects: keys, values, entries
  19. JSON: parse & stringify
  20. Scope, Hoisting & Closures
  21. Callbacks
  22. The DOM: Select and Change the Page
  23. Create & Remove Elements
  24. Events: Respond to the User
  25. Forms & Input Validation
  26. Timers: setTimeout & setInterval
  27. Destructuring, Spread & Rest
  28. Classes
  29. Errors: try / catch / throw
  30. Promises & async / await
  31. Modules: import / export
  32. Capstone: Interactive To-Do App
  33. Full-Stack Capstone: A Complete Web App

Other courses

Computational Thinking

Learn to think like a problem-solver before you write a single line of code. Break big …

Basic Python

Your first Python course, no experience needed. Learn variables, loops, functions, and …

Intermediate Python

Level up your Python with comprehensions, lambdas, error handling, files, modules, and …

Object-Oriented Programming

Master OOP in Python: classes, objects, inheritance, polymorphism, encapsulation, abstr…

Advanced Python

Go deeper in Python: decorators, generators, type hints, regex, JSON, SQLite, testing, …

Data Structures & Algorithms

Core CS: arrays, lists, stacks, queues, hash tables, trees, graphs, sorting, searching,…

Games with Pygame

Build your own 2D games from scratch: the game loop, sprites, movement, collisions, and…

Java

Learn Java from zero, with no programming background needed. Write your first program, …

C++

Learn C++ from zero, with no programming background needed. Start with your first progr…

C

Learn C from zero, with no programming background needed. The language that Unix, Linux…

Web Frontend

Build for the browser: structure pages with HTML, style them with CSS, then use live AP…

Full-Stack Web

Put Python behind the browser: Flask routes, forms, APIs, the requests library, and ful…

See all courses