Duet Date Picker is an open source version of Duet Design System’s WCAG 2.1 compliant date picker. It can be implemented and used across any JavaScript framework or no framework at all.

React Tutorial is an interactive way to learn React in the browser. It consists of short lessons and challenges as well as flashcards.

LazyLoad is a fast, lightweight and flexible script that speeds up your web application by loading images, video or iframes as they enter the viewport. It’s written in plain “vanilla” JavaScript, uses Intersection Observers, and supports responsive images. It’s also SEO-friendly and it has some other notable features.