I've been pleasantly surprised by how performant clojurescript and its various react wrappers are. I'm able to sort, display and animate 10000 divs on a pretty old macbook pro with really simple code on this page <a href="http://akjetma.github.io/#/sorter" rel="nofollow">http://akjetma.github.io/#/sorter</a><p>cljs source: <a href="https://github.com/akjetma/akjetma.github.io/blob/master/src-cljs/home/page/sorter.cljs" rel="nofollow">https://github.com/akjetma/akjetma.github.io/blob/master/src...</a>