<script>
  var i = 1;
  while (i<=10)
  {
    document.write(i, ",");
    i++;
  }
  document.write("<hr>");
 
  //--------------------------------------

  i = 1;
  do
  {
    document.write(i, ",");
    i++;
  }
  while (i<=10);
 
  //--------------------------------------
 
  document.write("<hr>");

 
</script>