There seems to be a dearth of good quickcheck-like testing tools in javascript. However they are to be better supported in typed languages, and in fact you can write your tests in one of those languages if you wish.
To avoid dealing with runtime interop, I'd recommend going with a language which compiles to JS and runs on node.js (eg: Purescript with purescript-quickcheck), or a java-based language using the Nashorn engine provided in Java 8, for example ScalaCheck. You could even use ghcjs and the original flavor of the quickcheck library!