If you want to learn to create relatively simple online games using Javascript, then the HTML5 Game From Scratch Step By Step Learning JavaScript course is a great place to start.

This article takes you step by step through how to create a hosted Observable notebook, add your own JavaScript components, and then import code from public notebooks for reuse. Step 1: Create a ...

In the course, you’ll learn how to make interactive websites, how to debug JavaScript code in your app or site, and the latest syntax for working with arrays, functions, and loops.

Learn how to make the most of Observable JavaScript and the Observable Plot library, including a step-by-step guide to eight basic data visualization tasks in Plot.