JavaScript实现汉诺塔递归算法

<script language="javascript">
 var han=function (disc,src,aux,dst){
  if(disc>0){
   han(disc-1,src,dst,aux);
   document.writeln("move disc "+disc+" from "+src+" to "+dst+"<br/>");
   han(disc-1,aux,src,dst);
  }
 };
 han(10,"src","aux","dst");
</script>