Course · 16 topics · 257 exercises

Learn JavaScript, ten minutes a day.

JavaScript is the language of the web: it is what makes a page react when you click, type or scroll. Every browser understands it, and it is the gateway to web development.

What you’ll learn

The course moves through 4 units, from the very first line to complete programs. Each topic is explained in three sentences, then practiced.

Unit 1

First steps

Printing to the console
let and const
Types
Strings

Unit 2

Calculate and decide

Arithmetic
=== and comparisons
Conditions
else and else if

Unit 3

Arrays and loops

Arrays
Array methods
The for loop
The while loop

Unit 4

Functions, objects and the web page

Functions
Arrow functions
Objects
Working with the page

Workshops, not just exercises

At the end of each unit, a workshop has you build a real little program, step by step:

The click counter
The form validator
The basket
The button comes alive

Who is it for?

You want to understand how websites work, or build one someday. No prior programming needed: we start from the very first console.log.

And then?

This course covers the basics of JavaScript. By the end, you can read code and write small programs. To go further, the next step is a real project on a computer — and you will have the foundations to dive in.

Kodo is
almost here.

Free, no ads, on Android. Leave your email: we’ll tell you on launch day.