Javascript String myReverse()

/* function myReverse (str) {
 var arr = str.split('');/*from   w  w  w.j ava2  s  . co m*/
 for (var i=0; i<arr.length/2; i++) {
  var temp = arr[i];
  arr[i] = arr[arr.length-1-i];
  arr[arr.length-1-i] = temp;
 }
 return arr.join('');
}

console.log(myReverse("String"));
console.log(myReverse("abcde"));*/

//prototype adds a property(a key/value pair - in this case a key:function) to the object
String.prototype.myReverse = function () {
 var arr = this.split('');
 for (var i=0; i<arr.length/2; i++) {
  var temp = arr[i];
  arr[i] = arr[arr.length-1-i];
  arr[arr.length-1-i] = temp;
 }
 return arr.join('');
}

console.log("String".myReverse());
console.log("abcde".myReverse());