From Tutorialzine –10 Machine Learning Examples in JavaScript:
A collection of cool libraries and web experiments that will help JavaScript developers make their first steps in machine learning. The web ecosystem has made a lot of progress in recent times and although JavaScript and Node.js are still less performant than Python and Java, they are now powerful enough to handle many machine learning problems. Web languages also have the advantage of being super accessible – all you need to run a JavaScript ML project is your web browser.