Who says "JS is slow"? It might even be the single most heavily optimized scripting language ever. Given that Apple, Google, Microsoft and Mozilla work on high

Who says "JS is slow"? It might even be the single most heavily optimized scripting language ever. Given that Apple, Google, Microsoft and Mozilla work on high performance JS VMs (half of them open source) and in a public competition with benchmarks and claims for fastest browsing experience. Performance was one of the selling points of Node.JS for me.