The website is about a nature association called KNNV, which focuses on field biology. It utilizes the jQuery JavaScript library (version 3.6.4) along with the Sizzle.js selector engine for its web development purposes. The site includes copyright information and is released under a license by the OpenJS Foundation and other contributors. The code is designed to work in common environments like Node.js and browsers with a proper window object containing the document element. An error will be thrown if jQuery doesn't find the required window with document. The factory function helps in creating a globally accessible instance of jQuery for different environment scenarios, such as passing it through "this" or using module.exports in Node.js environments that support CommonJS-like modules.
