Here you’ll find a list of tools, libraries, polyfills and other kinds of open source scripts I’ve developed over the years, ordered by release date, NOT popularity. Some of them only work in recent browsers. Also, obviously if you use a tool to help you with an experimental CSS feature, it probably won’t work in browsers that don’t support that feature.
Browse the functions list to find plain JavaScript solutions for common jQuery tasks. Get started by reading up on querySelectorAll() - a CSS selector method like the one provided by jQuery. Discover a wide variety of vanilla JS tools in the plugins repository, e.g. lightboxes, WYSIWYG editors, charting libraries, and a lot more.