Script.js
Asyncronous JavaScript loader and dependency manager
Nanobar
Very lightweight progress bars. No jQuery
LABjs
Loading And Blocking JavaScript: On-demand parallel loader for JavaScript with execution order dependencies
Blazy
bLazy is a lightweight lazy loading and multi-serving image script. It's written in JavaScript why it doesn't have any dependencies for 3rd party libraries like jQuery. bLazy is working in all modern browser including IE7+.
Oc Lazy Load
Load modules on demand (lazy load) in AngularJS
Imagesloaded
JavaScript is all like "You images done yet or what?"
RequireJS
A file and module loader for JavaScript
Lazy Load Xt
Lazy load XT is a jQuery plugin for images, videos and other media
Sea.js
A Module Loader for the Web
Head js
The only script in your HEAD. Head JS loads JavaScript files in parallel like images without blocking the page. Your page will be faster. Even with a single combined file.
Lozad.js
🔥 Highly performant, light ~0.9kb and configurable lazy loader in pure JS with no dependencies for responsive images, iframes and more
Pilpil
Pilpil - Progressive Image Loading
Px Loader
PxLoader is a simple JavasScript library for creating preloaders and resource downloaders for HTML5 apps.
Layzr.js
A small, fast, modern, and dependency-free library for lazy loading.
Queue
Yet another asynchronous helper library for JavaScript. 387 bytes minified and gzipped!
Almond
A minimal AMD API implementation for use after optimized builds
jQuery Pjax
pushState + ajax = pjax