开发学院WEB开发ASP 三层动态下拉菜单的例子 阅读

三层动态下拉菜单的例子

 2001-12-25 11:08:38 来源:WEB开发网   
核心提示:写了一个三层动态读取文件夹的下拉菜单的例子,供大家参考!<%'得到文件夹路径,三层动态下拉菜单的例子,注意设置文件名字urlpath=server.mappath("\book")set fsoBrowse=CreateObject("Scripting.FileSystem
写了一个三层动态读取文件夹的下拉菜单的例子,供大家参考!
<%
'得到文件夹路径。注意设置文件名字
urlpath=server.mappath("\book")
set fsoBrowse=CreateObject("Scripting.FileSystemObject")

'设置文件夹路径
if Request("path")="" then
lpath=urlpath&"\"
else
lpath=Request("path")&"\"
end if
%>

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<meta http-equiv=PRAGMA CONTENT=NO-CACHE>
<title>中国国际航空公司</title>
<link rel="stylesheet" href="news.CSS">

<script language="javaScript1.2">
NS4 = (document.layers) ? 1 : 0;
IE4 = (document.all) ? 1 : 0;
ver4 = (NS4 || IE4) ? 1 : 0;

if (ver4) {
  with (document) {
    write("<STYLE TYPE='text/css'>");
    if (NS4) {
      write(".parent {position:absolute; visibility:visible}");
      write(".child {position:absolute; visibility:visible}");
      write(".regular {position:absolute; visibility:visible}")
    }
    else {
      write(".child {display:none}")
    }
    write("</STYLE>");
  }
}

function getIndex(el) {
  ind = null;
  for (i=0; i<document.layers.length; i++) {
    whichEl = document.layers[i];
    if (whichEl.id == el) {
      ind = i;
      break;
    }
  }
  return ind;
}

function arrange() {
  nextY = document.layers[firstInd].pageY +document.layers[firstInd].document.height;
  for (i=firstInd+1; i<document.layers.length; i++) {
    whichEl = document.layers[i];
    if (whichEl.visibility != "hide") {
      whichEl.pageY = nextY;
      nextY += whichEl.document.height;
    }
  }
}

function initIt(){
  if (!ver4) return;
  if (NS4) {
    for (i=0; i<document.layers.length; i++) {
      whichEl = document.layers[i];
      if (whichEl.id.indexOf("Child") != -1) whichEl.visibility = "hide";
    }
    arrange();
  }
  else {
    divColl = document.all.tags("DIV");
    for (i=0; i<divColl.length; i++) {
      whichEl = divColl(i);
      if (whichEl.className == "child") whichEl.style.display = "none";
    }
  }
}

function expandIt(el) {
  if (!ver4) return;
  if (IE4) {
    whichEl = eval(el + "Child");
    if (whichEl.style.display == "none") {
      whichEl.style.display = "block";
    }
    else {
      whichEl.style.display = "none";
    }
  }
  else {
    whichEl = eval("document." + el + "Child");
    if (whichEl.visibility == "hide") {
      whichEl.visibility = "show";
    }
    else {
      whichEl.visibility = "hide";
    }
    arrange();
  }
}

onload = initIt;

</script>

</head>
<body bgcolor="#ffffff" topmargin="0" leftmargin="0">
<table width="248" border="0" cellspacing="0" cellpadding="0" align="left">
 <tr>
  <td>
   <%
    '处理第一层文件目录
    dim theFolder,theSubFolders
    if fsoBrowse.FolderExists(lpath)then
    Set theFolder=fsoBrowse.GetFolder(lpath)
    Set theSubFolders=theFolder.SubFolders
    
    '循环输出第一层文件
    i=1
    For Each x In theSubFolders
    k="KB"&i
    Parent=k&"Parent"
    i=i+1
   %>
   <div id="<%=Parent%>" class="parent"> <a href="#" onClick="expandIt('<%=k%>'); return false"><img src=http://www.cncms.com/"i_option.gif" width="20" height="16" border="0"><%=x.Name%></a></div>
    <%'处理第二层文件
     onepath=lpath&x.Name&"\"
     if fsoBrowse.FolderExists(onepath) then
     Set ChildtheFolder=fsoBrowse.GetFolder(onepath)
     Set ChildtheSubFolders=ChildtheFolder.SubFolders
     Child=k&"Child"
    %>
     <div id="<%=Child%>" class="child">
    <%'循环输出第二层文件
     m=1
     For Each y In ChildtheSubFolders
     k="KB"&i&m
     m=m+1
    %>
        <img src=http://www.cncms.com/"filebox.gif" width="19" height="13"><a href="#" onClick="expandIt('<%=k%>'); return false"><%=y.Name%></a><br>
       <%
       '处理第三层文件
       twopath=onepath&y.Name&"\"
       if fsoBrowse.FolderExists(twopath) then
         Set gtheFolder=fsoBrowse.GetFolder(twopath)
         Set gtheSubFolders=gtheFolder.SubFolders
        
         Child=k&"Child"
       %>
         <div id="<%=Child%>" class="child">
         <%
         '循环输出第三层文件
         For Each z In gtheSubFolders
                   %>        
              <img src=http://www.cncms.com/"filebox.gif" width="19" height="13"><%=z.Name%><br>
         <%
         Next
         %>
         </div>
       <%
        end if
       %>
    <%
     Next
    %>
     </div>
    <%
     end if
    %>
   <%
    Next
    end if
   %>
  </td>
 </tr>
</table>
</body>
</html>

Tags:动态 下拉 菜单

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