Books on Art & JavaScript
It's not hard to find good online tutorials and examples that show you had to make a ball bounce across the screen, animate text or even experiment with facial recognition in the browser. I still find it helpful to read books on these topics—even real, physical books I can throw in a bag and take to the beach.
Generative Art: A Practical Guide Using Processing by Matt Pearson.
This book specifically shows you how to make things in Processing, but it's easy to apply to concepts to other languages.Technology & Creativity by Subrata Dasgupta.
This is not a book on JavaScript or making art with computers. Instead it talks about the creative process through the lense of technological progress. I think it's as helpful, academic reminder that creativity isn't a piece of software or literal tool in your toolbelt. It's a way of thinking and approaching the world.