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
react native intersection observer
Faster subsequent page-loads by prefetching in-viewport links during idle time
Determine whether an element is completely within the browser viewport
Wrapper around IntersectionObserver to hide away its weirdness and increase ease of usability