As danh and drcode said, Hiccup is basically edn->text and server side only but there are a number of implementations of the same concept in ClojureScript:

https://github.com/teropa/hiccups - Basically a straight port of hiccup to ClojureScript.

https://github.com/ibdknox/crate - Returns dom nodes instead of strings.

https://github.com/lynaghk/singult - Works in Clojure or ClojureScript and offers live merging of nodes into the dom.

https://github.com/Prismatic/dommy - Dommy is more than just templating but offers a hiccup style templating language too.

And I'm sure there are others.