So far I tried compiling some of my numeric Scala code to JS with Scala.JS and unfortunately running that code in Chrome is much, much slower (~10-20 times) tha

So far I tried compiling some of my numeric Scala code to JS with Scala.JS and unfortunately running that code in Chrome is much, much slower (~10-20 times) than running the original version on Java 7. :( Not sure if it is because Scala.JS creates poor code, or just JS is still not as fast as they claim.