这样的情况如何解决呢！￣

Question

<script>
var val = "DHD"
                var bm = val.split("D");
                var passBm = "";
                for( var i=0;i<bm.length;i++)
                {
                        if( i > 0 && bm[i] != "" )
                        {
                                passBm += bm[i];
                                passBm = "D" + passBm
                        }
                        
                }
alert( passBm )</script>