Javascript Array selection_sort()

Array.prototype.selection_sort = function() {
   var i, j, min;
   var temp;/*from  w  w w  .  j  a v  a2  s .  com*/
   for (i = 0; i < this.length - 1; i++) {
      min = i;
      for (j = i + 1; j < this.length; j++)
         if (this[min] > this[j])
            min = j;
      temp = this[min];
      this[min] = this[i];
      this[i] = temp;
   }
};