JavaScript

JavaScript Tutorials from Codecademy

Codecademy tutorials that will teach you how to make websites interactive and create browser-based games using JavaScript. Currently free, but requires you to create an account. Practice projects and quizzes require a Pro (paid) membership.

https://www.codecademy.com/catalog/language/javascript

JavaScript Tutorials from HTML Goodies

Primers and extensive list of tutorials and script tips. Presented with user-friendly language and topic headings. Examples and explanations of code you can use.

https://www.htmlgoodies.com/javascript