▽jQuery Blog ●02/08 08:39 jQuery 4.0 drops support for IE 10 and older. Some may be asking why we didn’t remove support for IE 11. We plan to remove support in stages, and the next step will be released in jQuery 5.0. For now, we’ll start by removing code specifically supporting IE versions older than 11, giving us a size reduction of -867 gzipped bytes in one PR!