How to make a Machine Learning Recommendation System using JavaScript

Are you interested in machine learning and its applications? If you're looking to learn something new and great, how about a machine learning recommendation system? Well, don't be scared or blown away with those massive terms and words, they just tell someone what exactly some code does. Machine learning has always been in the news, whether for taking away jobs or making a robot understand and reply to a human. But what exactly can we do with machine learning?