The loop that deserves respect

try//!2
{
 (function(arr)
 {
  console.log("Counting UP");
  function _(a)
  {
   a=a|0;
   if(a<arr.length)
   {
    try
    {
     console.log("arr["+a+"]="+arr[a]);
     _(a+1);
    }
    catch(i)
    {
     i--;
     console.log("arr["+i+"]="+arr[+i]);
     throw +i;
    }
   }
   else
   {
    console.log("And counting DOWN");
    throw a;
   }
  }_();
 })([1,3,5,7,"Please don't ask what's wrong with me"]);
}
catch(aCold)
{
 //because it is winter
}