编写一个含二级目录的源码(Asp+JavaScript)


            ********************** (一) 打开记录集,创建数组,把记录集的值赋给数组. <%  Dim count set Rs=server.createobject("adodb.recordset") Sql = "select * from BookBoard order by ClassId desc" Rs.open Sql,cn,1,1%> <script language = "JavaScript"> var onecount; onecount=0; subcat = new Array(); <%count = 0 do while not Rs.eof %> subcat[<%=count%>] = new Array("<%= trim(Rs("BoardName"))%>","<%= trim(Rs("ClassId"))%>","<%= trim(Rs("BoardId"))%>"); <%count = count + 1 Rs.movenext loop Rs.close%> onecount=<%=count%>; function changelocation(locationid) {document.form1.BoardId.length = 0;   var locationid=locationid;  var i;  for (i=0;i < onecount; i++) {if (subcat[i][1] == locationid) {document.form1.BoardId.options[document.form1.BoardId.length] = new Option(subcat[i][0], subcat[i][2]); }}}     </script> ********************** (二) 显示分组,并编写列表框的OnChange事件. <%set Rs=server.CreateObject("adodb.recordset")     Sql="select * from BookClass order by ClassId desc"     Rs.open Sql,cn,1,1     if Rs.eof and Rs.bof then     response.write "请先添加总类。"     response.end     else%>     <select name="ClassId" onChange="changelocation(document.form1.ClassId.options[document.form1.ClassId.selectedIndex].value)">     <option selected value="">==请选择大类==</option>     <% do until Rs.eof%>     <option value="<%=trim(Rs("ClassId"))%>"><%=trim(Rs("ClassName"))%></option>      <%Rs.movenext        loop        end if        Rs.close        set Rs = nothing%>     </select>     <select name="BoardId"><option selected value="">==请选择小类==</option>     </select>