JavaScript 文件目录树
有如下文件
\index.htm
\leftframe.html
\centerframe.html
\rigthframe.html
我在index.htm里把页面分割成左、中、右三个网页框架：左边为目录，中间为内容，右边是一张图片。
----------------------
我想实现如下效果：
1.leftframe.html文件所在目录有如下文件夹：
\计算机常识\
\编程\
\英语\
\……
每个文件夹有很多*.html文件。
2.类似资源管理器的文件目录树视图：
（1）在左边框架（leftframe.html）里动态生成一个目录树，该目录显示的是计算机常识、编程、英语文件夹里的*.html文件。
（2）目录树的节点名字就是网页文件的名字，点击后可以展开或者是在网页中间框架显示该html的内容。
3.最好有全部展开，全部折叠、更新目录功能的按钮。
希望各位大侠不吝指点，或者给点方向。 展开
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta name="author" content="心梦缘ocean ocl" />
<title>My tree demo</title>
<style type="text/css">
/*主页面样歼亩式*/
.leftNav {
width: 20%;
height:500px;
border:#B9E0F7 1px solid;
margin-left: 1%;
margin-right: 1%;
}
#footer {
color:#808080;
line-height: 1.6em;
padding: 0 0 1em 0;
}
/*我的树样式表*/
.treeDiv {
color: #636363;
font-size: 14px;
font-weight: normal;
background-color: #fff;
color: black;
overflow: auto;
padding: 0 0 1em 0;
overflow-x: hidden;
}
.treeNode {
white-space: nowrap;
text-indent: -14px;
margin: 6px 2px 5px 14px;
}
a.treeUnselected:hover, a.treeSelected:hover {
background-color: #BFD9ED;
text-decoration: none;
}
a.treeUnselected, a.treeSelected {
color: black;
padding: 1px 3px 1px 0;
text-decoration: none;
}
a.treeSelected {
background-color: #B9E0F7;
}
a.treeUnselected {
background-color: transparent;
}
.treeSubnodes {
display: block;
}
.treeSubnodesHidden {
display: none;
}
.treeNode img.treeNoLinkImage, .treeNode img.treeLinkImage {
height: 15px;
margin-left: 5px;
margin-right: 0px;
width: 15px;
}
.treeNode img.treeLinkImage {
cursor: pointer;
}
袭绝
div.treeNode a, div.treeNode span.apiRoot {
display: inline-block;
margin-left: 24px;
text-indent: 0;
white-space: normal;
width: 95%;
word-wrap: break-word;
}
div.treeNode span.category {
cursor: pointer;
}
</style>
</head>
<body>
<div class="leftNav">
<div id="samplesToc">
<div id="tree" style="top: 35px; left: 0px;" class="treeDiv">
氏禅森 <div id="treeRoot" onselectstart="return false" ondragstart="return false">
<div class="treeNode">
<img src="../graphics/treenodeplus.gif" onclick="expandCollapse(this.parentNode)" class="treeLinkImage">
<span onclick="expandCollapse(this.parentNode)" class="category">目录节点一 </span>
<div class="treeSubnodesHidden">
<div class="treeNode">
<img src="../graphics/treenodeplus.gif" onclick="expandCollapse(this.parentNode)" class="treeLinkImage">
<span onclick="expandCollapse(this.parentNode)" class="category">目录节点一子目录 </span>
<div class="treeSubnodesHidden">
<div class="treeNode">
<a href="#" class="treeUnselected" onclick="clickAnchor(this)">二级叶子结点一</a>
</div>
<div class="treeNode">
<a href="#" class="treeUnselected" onclick="clickAnchor(this)">二级叶子结点二</a>
</div>
</div>
</div>
<div class="treeNode">
<a href="#" class="treeUnselected" onclick="clickAnchor(this)">叶子结点一</a>
</div>
<div class="treeNode">
<a href="#" class="treeUnselected" onclick="clickAnchor(this)">叶子结点二</a>
</div>
<div class="treeNode">
<a href="#" class="treeUnselected" onclick="clickAnchor(this)">叶子结点三</a>
</div>
<div class="treeNode">
<a href="#" class="treeUnselected" onclick="clickAnchor(this)">叶子结点四</a>
</div>
<div class="treeNode">
<a href="#" class="treeUnselected" onclick="clickAnchor(this)">叶子结点五</a>
</div>
<div class="treeNode">
<a href="#" class="treeUnselected" onclick="clickAnchor(this)">叶子结点六</a>
</div>
</div>
</div>
<!--end block-->
<div class="treeNode">
<img src="../graphics/treenodeplus.gif" onclick="expandCollapse(this.parentNode)" class="treeLinkImage">
<span onclick="expandCollapse(this.parentNode)" class="category">目录节点二</span>
<div class="treeSubnodesHidden">
<div class="treeNode">
<a href="#" class="treeUnselected" onclick="clickAnchor(this)">叶子结点一</a>
</div>
<div class="treeNode">
<a href="#" class="treeUnselected" onclick="clickAnchor(this)">叶子结点二</a>
</div>
<div class="treeNode">
<a href="#" class="treeUnselected" onclick="clickAnchor(this)">叶子结点三</a>
</div>
<div class="treeNode">
<a href="#" class="treeUnselected" onclick="clickAnchor(this)">叶子结点四</a>
</div>
<div class="treeNode">
<a href="#" class="treeUnselected" onclick="clickAnchor(this)">叶子结点五</a>
</div>
</div>
</div>
<!--end block-->
</div>
</div>
</div> <!-- end samplesToc -->
</div> <!-- end leftNav -->
<div class="right content">
</div><!-- end main content-->
<div id="footer" align="center">
</div><!-- end footer-->
<script type="text/javascript">
var treeSelected = null;//选中的树节点
var imgPlus = new Image();
imgPlus.src="../graphics/treenodeplus.gif";
var imgMinus = new Image();
imgMinus.src="../graphics/treenodeminus.gif";
//父节点展开事件
function expandCollapse(el)
{
//如果父节点有字节点（class 属性为treeSubnodesHidden），展开所有子节点
if (el.className!= "treeNode"){
return; //判断父节点是否为一个树节点，如果树节点不能展开，请检查是否节点的class属性是否为treeNode
}
var child;
var imgEl;//图片子节点，在树展开时更换图片
for(var i=0; i < el.childNodes.length; i++)
{
child = el.childNodes[i];
if (child.src)
{
imgEl = child;
}
else if (child.className == "treeSubnodesHidden")
{
child.className = "treeSubnodes";//原来若隐藏，则展开
imgEl.src = imgMinus.src;//更换图片
break;
}
else if (child.className == "treeSubnodes")
{
child.className = "treeSubnodesHidden";//原来若展开，则隐藏
imgEl.src = imgPlus.src;//更换图片
break;
}
}
}
//子节点点击事件，设置选中节点的样式
function clickAnchor(el)
{
selectNode(el.parentNode);
el.blur();
}
function selectNode(el)
{
if (treeSelected != null)
{
setSubNodeClass(treeSelected, 'A', 'treeUnselected');
}
setSubNodeClass(el, 'A', 'treeSelected');
treeSelected = el;
}
function setSubNodeClass(el, nodeName, className)
{
var child;
for (var i=0; i < el.childNodes.length; i++)
{
child = el.childNodes[i];
if (child.nodeName == nodeName)
{
child.className = className;
break;
}
}
}
</script>
</body>
</html>
运行效果：
前段刚用过，不错！！
可是dtree是同步的树，数模首据量大的话旦桥数，加载太慢，所以我现在正在写个异步的树。
