euler.2.js

var sys = require('sys');

var Euler2 = function() {
  var isEven = function(num) {
      if((num % 2)==0) return true;
      return false;
  }
  
  var calcEvenFibonacci = function(max) {
      
      var secondLast = 1;
      var last = 2;
      
      var res = 2;

      for(i=0;i<max;i++) {
	if(i == (secondLast+last)) {
	    secondLast = last;
	    last = i;
	    if(isEven(i)) {
		res +=i;
	    }
	}
      }
      sys.puts('Result: ' + res);
  }
  calcEvenFibonacci(4000000);
};

new Euler2();