Per Harald Borgen

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freeCodeCamp algorithm challenges

Quick solutions to the JavaScript algorithm challenges in the freeCodeCamp curriculum.

Learn CSS Variables for free

A full course on CSS Variables

CSS Variables course - drafts

A full course on CSS Variables

Learn CSS Flexbox for free

A full course on CSS Flexbox.

CSS Flexbox course - drafts

Playlist for the upcoming course

D3.js tutorial series

A collection of short tutorials on D3.js. So far only two, but more will come :)

Learn CSS Grid for free

Learn CSS Grid

Machine Learning in JavaScript

Per trying out various ML libraries that work in the browser.

Staff picks

The latest and greatest from our community!

Vue.js for Beginners

A set of bit sized tutorial for people interested in learning Vue.js

Your second React.js app

This time you'll learn about state, event handlers, the inverse data flow and more.

JavaScript Array Methods

Byte sized tutorials on the various prototype methods of JavaScript arrays.

Awesome API's

A collection of short tutorials on API's that are easy to get started with.

Your First React.js App

An introduction to React.js. You'll learn about ES6 components, JSX, props and more.