LoadJS is an extremely lightweight async loader/dependency manager that is meant to be embedded on every pageload. It has a payload size of 590 bytes (minified

LoadJS is an extremely lightweight async loader/dependency manager that is meant to be embedded on every pageload. It has a payload size of 590 bytes (minified + gzipped). RequireJS is a fully-featured dependency manager that works in legacy browsers. It has a payload size of 6.2KB (minified + gzipped).