Functional-Light JavaScript
Kyle Simpson's CC BY-NC-ND 4.0 take on functional programming for working JS developers — composition, immutability, currying, recursion, and list-operation idioms, without category-theory weight. Drills lift Simpson's example code (MIT) and let learners fill in the primitives by hand.
- JavaScript
- 23 lessons
- ~5 hours
- Free
- by Kyle Simpson
Learn JavaScript for free on Libre Academy with the Functional-Light JavaScript course: 23 interactive lessons you complete by writing real code in a built-in editor, graded instantly by hidden tests. No paywall, no sign-up. It's part of the free, open-source desktop app for macOS, Windows and Linux.
What you get
- Hands-on lessons with a real editor and instant, test-graded feedback.
- Free and open source, with no account required to start.
- Works offline in the free desktop app for macOS, Windows and Linux.
- JavaScript runs instantly in the app.
What's inside
- Why Functional Programming?
- The Nature of Functions
- Managing Function Inputs
- Composing Functions
- Immutability and Side Effects
- Recursion
- List Operations
- Functional Async
- Putting It All Together
Download to start Functional-Light JavaScript → More free JavaScript courses
Helpful reading
Why passive video doesn't make you a programmer · Bring Your Own Book: turning any PDF into a course