I’ve gone through the documentation for CoffeeScript, played with some sample code and feel reasonably confident that if I really wanted to, I could write CoffeeScript. That brings me to the next project: a node.js project with CoffeeScript.
It turns out that node.js will allow you to use mixed code fairly seemlessly because the CoffeeScript compiler is written in JavaScript. Simply include the coffee-script module and then include coffee scripts. easy.