This content originally appeared on 2ality – JavaScript and more and was authored by Dr. Axel Rauschmayer
So far, all of our JavaScript code resided in a single file – be it an .html
file or a .js
file. In this chapter, we learn how to split it up into multiple files. And how to automatically test if the code we write is correct.
This content originally appeared on 2ality – JavaScript and more and was authored by Dr. Axel Rauschmayer

Dr. Axel Rauschmayer | Sciencx (2025-08-27T00:00:00+00:00) Learning web development: Modules and testing in JavaScript. Retrieved from https://www.scien.cx/2025/08/27/learning-web-development-modules-and-testing-in-javascript/
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