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JavaScript Tutorial

Learn JavaScript from the ground up. Every code example on every lesson is real and runnable — the output shown was captured from an actual execution on this site's own compiler, not typed by hand — and you can try each one yourself with one click.

1. 1Introduction to JavaScript
2. 2Your First JavaScript Program
3. 3Variables and Data Types
4. 4Numbers and Basic Math Operators
5. 5Strings and Template Literals
6. 6Arrays
7. 7Objects
8. 8Sets
9. 9Conditional Statements (if, else if, else)
10. 10for Loops
11. 11while Loops
12. 12Functions
13. 13Arrow Functions
14. 14Array Methods: map, filter, and reduce
15. 15Exception Handling (try/catch)
16. 16Classes and Objects
17. 17Promises and Async/Await
18. 18Modules and the Standard Library

More lessons are added regularly. Want to practice outside the tutorial? Open the JavaScript compiler. Prefer Python? Read the Python tutorial. Prefer TypeScript? Read the TypeScript tutorial. Prefer C? Read the C tutorial. Prefer Hindi? Hindi mein padhein. Prefer Urdu? Roman Urdu mein parhein. ¿Prefieres español? Leer en español. Prefere português? Ler em português.