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Learn JavaScript

JavaScript makes pages interactive. You learn the ideas every programmer uses (variables, functions, decisions, loops, arrays and objects), then use them to make a page respond to clicks and build a working to-do list.

7 lessons52 minutes1 quiz12 reference entries
Start lesson 1 Take the quiz

Lessons

  1. 01Variables and the console6 min
  2. 02Functions7 min
  3. 03Making decisions with if7 min
  4. 04Arrays and loops8 min
  5. 05Objects7 min
  6. 06Respond to a click8 min
  7. 07Build a to-do list9 min

Keep practicing

7 questions

JavaScript basics

Seven quick questions on variables, decisions, arrays, objects and functions.

JavaScript reference

12 short entries with examples and links to the official docs.

Code challenges

7 JavaScript challenges with test cases, including a daily one.

Coming next to this path: Fetching data from the web, Saving data in the browser, Modules.