Javascript String transform(input)

//transform.js//from w  w w.j  a v a  2s  .  co  m

//Override string prototype reverse:
String.prototype.transform = function(input) {
    var output = "";
    for (var i = input.length - 1; i >= 0; i--)
 {  
  output = output + input[i];
 }
 return output;
}