Locomotive Scroll
A simple scroll library used by developers at Locomotive. Built as a layer on top of ayamflow's virtual-scroll, it provides smooth scrolling with support for parallax effects, toggling classes, and triggering event listeners when elements are in the viewport.
2.0 — instant.page
instant.page makes your site’s pages instant — in 1 minute of effort — by preloading pages right before a user clicks on them: when they hover over a link for 65 ms; there’s one chance out of two that they will click then. On mobile, it preloads when they start touching their display, before releasing it.
Cheat sheet for moving from jQuery to vanilla JavaScript | Tobias Ahlin
With browser support of ES6 having reached more than 96%, it might be a good idea to move away from jQuery to accomplish basic tasks like fetching data, selecting elements, styling and animating them, as Tobias Ahlin argues.