Here is a fun little email signup form using splitting.js design by Adam Kuhn. The email characters you type in literally grows legs and runs into the signup button!

Sal (Scroll Animation Library) is written with aim to provide performant and lightweight solution for animating elements on scroll. It's based on the Intersection Observer, which gives amazing performance in terms of checking the element's presence in viewport.

A button that seamlessly transitions from action to confirmation made by Hakim El Hattab, the author of https://slides.com/