Edit in JSFiddle

<script type="text/javascript">
    var temp1 = 5, temp2 = 10;
    var max, min;

    temp1 >= temp2 ? (max = temp1, min = temp2) : (max = temp2, min = temp1);

    document.write('큰값 = ' + max + '<br>');
    document.write('작은값 = ' + min + '<br>');

  </script>