UpSet.js is a JavaScript re-implementation of UpSetR which itself is based on UpSet to create interactive set visualizations for more than three sets. The core library is written in React but provides also bundle editions for plain JavaScript use.

More details about UpSet.js can be found on the Medium article series about it:

1. UpSet.js — The UpSet.js Ecosystem
2. UpSet.js — JavaScript Tutorial
3. UpSet.js — Behind the (technical) Scenes