JavaScript from Scratch

What is programming and why do you need it?

Learn to store information in variables

Learn to combine strings and work with text in JavaScript

Learn to perform calculations and compare values

7 JavaScript types: string, number, boolean, null, undefined, symbol and bigint

Object nuances and pitfalls: null, arrays, references and copying

Teach the computer to make decisions based on conditions

Repeat actions many times without duplicating code

Learn to group code into reusable blocks

Learn to store lists of data

Learn to describe complex things with multiple properties

Learn to change web page content with JavaScript

Learn to react to user actions

try/catch, error types and how to read error messages

Learn to work with asynchronous code

Learn to fetch data from the internet

Apply your knowledge in real projects

A big project — a complete game that tests all your knowledge

Classes, modules, and modern JavaScript features