I love the idea, but the very first example on there ("How to add a class to an element") comes with the disclaimer "isn't supported in IE 11". Everyone likes t

I love the idea, but the very first example on there ("How to add a class to an element") comes with the disclaimer "isn't supported in IE 11". Everyone likes to support only modern browsers, but completely dropping support for IE is unlikely to be acceptable for most users. For my own sites I conditionally include a shim for IE users so I can use vanilla JS and only IE is bothered by the longer load time, using <!--[if lte IE 10]> ... <![endif]-->