verlok

vanilla-lazyload

LazyLoad is a lightweight (2.4 kB) and flexible script that speeds up your web application by deferring the loading of your below-the-fold images, videos and iframes to when they will enter the viewport. It's written in plain "vanilla" JavaScript, it leve

intersection-observer-amd

A polyfill for IntersectionObserver, served as AMD

iobserve

IObserve is a lightweight script that allows you to easily use browsers' IntersectionObserver API