euler.5.js

var sys = require('sys');

var Euler5 = function() {
  var factorial = function(num) {
      var res = 1;
      for(var i=num;i>1;i--) {
          res = i*res;
      }
      return res;
  }

  var isDivisor = function(number, candidate) {
        //If a division has no remainder the candidate is a divisor of number.
        return ((number%candidate)==0);
  }

  var checkDivisors = function(number, maxNumber) {
      for(var i=1;i<=maxNumber;i++) {
          if(!isDivisor(number, i)) {
              return false;
          }
      }
      return true;
  }

  var getSmallestEvenlyDivisable = function(maxNumber) {
     maxResult = factorial(maxNumber);
     for(var i=maxNumber;i<=maxResult;i++) {
        if(checkDivisors(i, maxNumber)) {
            sys.puts('Result: ' + i);
            break;
        }
     }

  };
  getSmallestEvenlyDivisable(20);
};

new Euler5();