Performance: LazyLoad
Performance steht bei mir gerade weit oben auf meiner Interessenliste, daher hier ein Link zu LazyLoad.
LazyLoad is a tiny (only 1,541 bytes minified), dependency-free JavaScript library that makes it super easy to load external JavaScript and CSS files on demand. It’s ideal for quickly and unobtrusively loading large external scripts and stylesheets either lazily after the rest of the page has finished loading or on demand as needed.
In addition to CSS support, this version of LazyLoad also adds support for parallel loading of multiple resources in browsers that support it. To load multiple resources in parallel, simply pass an array of URLs in a single LazyLoad call.
Ähnliches tut auch das jQuery Plugin xLazyLoader