finding the largest product of 5 consecutive digits in an array/string of a rather large size

all languages are made equal

x is some array of numbers 

Clojure Version.clj

(apply max 
    (map #(reduce * %)
        (for [i (range (count x))] 
            (take 5 (drop i x)))))

Javascript Version.js

Math.max.apply(null,
  x.map(function(v,i,a){
    return a.slice(i,i+5).reduce(function(p,c){
      return p*c; }); }) );