无限级可刷新Js树型菜单 dTree特效代码

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以下是无限级可刷新Js树型菜单 dTree特效代码的示例演示效果:

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HTML代码(index.html):

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<meta name="keywords" content="JS代码,菜单导航,JS广告代码,JS特效代码" />
<meta name="description" content="此代码内容为无限级可刷新Js树型菜单 dTree，属于站长常用代码" />
<title>无限级可刷新Js树型菜单 dTree</title>
<link rel="StyleSheet" href="dtree.css" type="text/css" />
<script type="text/javascript" src="dtree.js"></script>
</head>
<body>
<h1>无限级可刷新Js树型菜单</h1>
<h2>Example</h2>
<div class="dtree">
	<p><a href="javascript: d.openAll();">open all</a> | <a href="javascript: d.closeAll();">close all</a></p>
	<script type="text/javascript">
		<!--
		d = new dTree('d');
		d.add(0,-1,'My example tree');
		d.add(1,0,'Node 1','#');
		d.add(2,0,'Node 2','#');
		d.add(3,1,'Node 1.1','#');
		d.add(4,0,'Node 3','#');
		d.add(5,3,'Node 1.1.1','#');
		d.add(6,5,'Node 1.1.1.1','#');
		d.add(7,0,'Node 4','#');
		d.add(8,1,'Node 1.2','#');
		d.add(9,0,'My Pictures','#','Pictures I\'ve taken over the years','','','img/imgfolder.gif');
		d.add(10,9,'The trip to Iceland','#','Pictures of Gullfoss and Geysir');
		d.add(11,9,'Mom\'s birthday','#');
		d.add(12,0,'Recycle Bin','#','','','img/trash.gif');
		document.write(d);
		//-->
	</script>
</div>
</body>
</html>

JS代码(dtree.js):

/*--------------------------------------------------|| dTree 2.05 | www.destroydrop.com/javascript/tree/ ||---------------------------------------------------|| Copyright (c) 2002-2003 Geir Landr� || || This script can be used freely as long as all || copyright messages are intact. || || Updated:17.04.2003 ||--------------------------------------------------*/
// Node objectfunction Node(id,pid,name,url,title,target,icon,iconOpen,open){
	this.id = id;
	this.pid = pid;
	this.name = name;
	this.url = url;
	this.title = title;
	this.target = target;
	this.icon = icon;
	this.iconOpen = iconOpen;
	this._io = open || false;
	this._is = false;
	this._ls = false;
	this._hc = false;
	this._ai = 0;
	this._p;
}
;
	// Tree objectfunction dTree(objName){
	this.config ={
	target:null,folderLinks:true,useSelection:true,useCookies:true,useLines:true,useIcons:true,useStatusText:false,closeSameLevel:false,inOrder:false}
this.icon ={
	root:'img/base.gif',folder:'img/folder.gif',folderOpen:'img/folderopen.gif',node:'img/page.gif',empty:'img/empty.gif',line:'img/line.gif',join:'img/join.gif',joinBottom:'img/joinbottom.gif',plus:'img/plus.gif',plusBottom:'img/plusbottom.gif',minus:'img/minus.gif',minusBottom:'img/minusbottom.gif',nlPlus:'img/nolines_plus.gif',nlMinus:'img/nolines_minus.gif'}
;
	this.obj = objName;
	this.aNodes = [];
	this.aIndent = [];
	this.root = new Node(-1);
	this.selectedNode = null;
	this.selectedFound = false;
	this.completed = false;
}
;
	// Adds a new node to the node arraydTree.prototype.add = function(id,pid,name,url,title,target,icon,iconOpen,open){
	this.aNodes[this.aNodes.length] = new Node(id,pid,name,url,title,target,icon,iconOpen,open);
}
;
	// Open/close all nodesdTree.prototype.openAll = function(){
	this.oAll(true);
}
;
	dTree.prototype.closeAll = function(){
	this.oAll(false);
}
;
	// Outputs the tree to the pagedTree.prototype.toString = function(){
	var str = '<div class="dtree">\n';
	if (document.getElementById){
	if (this.config.useCookies) this.selectedNode = this.getSelected();
	str += this.addNode(this.root);
}
else str += 'Browser not supported.';
	str += '</div>';
	if (!this.selectedFound) this.selectedNode = null;
	this.completed = true;
	return str;
}
;
	// Creates the tree structuredTree.prototype.addNode = function(pNode){
	var str = '';
	var n=0;
	if (this.config.inOrder) n = pNode._ai;
	for (n;
	n<this.aNodes.length;
	n++){
	if (this.aNodes[n].pid == pNode.id){
	var cn = this.aNodes[n];
	cn._p = pNode;
	cn._ai = n;
	this.setCS(cn);
	if (!cn.target && this.config.target) cn.target = this.config.target;
	if (cn._hc && !cn._io && this.config.useCookies) cn._io = this.isOpen(cn.id);
	if (!this.config.folderLinks && cn._hc) cn.url = null;
	if (this.config.useSelection && cn.id == this.selectedNode && !this.selectedFound){
	cn._is = true;
	this.selectedNode = n;
	this.selectedFound = true;
}
str += this.node(cn,n);
	if (cn._ls) break;
}
}
return str;
}
;
	// Creates the node icon,url and textdTree.prototype.node = function(node,nodeId){
	var str = '<div class="dTreeNode">' + this.indent(node,nodeId);
	if (this.config.useIcons){
	if (!node.icon) node.icon = (this.root.id == node.pid) ? this.icon.root:((node._hc) ? this.icon.folder:this.icon.node);
	if (!node.iconOpen) node.iconOpen = (node._hc) ? this.icon.folderOpen:this.icon.node;
	if (this.root.id == node.pid){
	node.icon = this.icon.root;
	node.iconOpen = this.icon.root;
}
str += '<img id="i' + this.obj + nodeId + '" src="' + ((node._io) ? node.iconOpen:node.icon) + '" alt="" />';
}
if (node.url){
	str += '<a id="s' + this.obj + nodeId + '" class="' + ((this.config.useSelection) ? ((node._is ? 'nodeSel':'node')):'node') + '" href="' + node.url + '"';
	if (node.title) str += ' title="' + node.title + '"';
	if (node.target) str += ' target="' + node.target + '"';
	if (this.config.useStatusText) str += ' onmouseover="window.status=\'' + node.name + '\';
	return true;
	" onmouseout="window.status=\'\';
	return true;
	" ';
	if (this.config.useSelection && ((node._hc && this.config.folderLinks) || !node._hc))str += ' onclick="javascript:' + this.obj + '.s(' + nodeId + ');
	"';
	str += '>';
}
else if ((!this.config.folderLinks || !node.url) && node._hc && node.pid != this.root.id)str += '<a href="javascript:' + this.obj + '.o(' + nodeId + ');
	" class="node">';
	str += node.name;
	if (node.url || ((!this.config.folderLinks || !node.url) && node._hc)) str += '</a>';
	str += '</div>';
	if (node._hc){
	str += '<div id="d' + this.obj + nodeId + '" class="clip" style="display:' + ((this.root.id == node.pid || node._io) ? 'block':'none') + ';
	">';
	str += this.addNode(node);
	str += '</div>';
}
this.aIndent.pop();
	return str;
}
;
	// Adds the empty and line iconsdTree.prototype.indent = function(node,nodeId){
	var str = '';
	if (this.root.id != node.pid){
	for (var n=0;
	n<this.aIndent.length;
	n++)str += '<img src="' + ( (this.aIndent[n] == 1 && this.config.useLines) ? this.icon.line:this.icon.empty ) + '" alt="" />';
	(node._ls) ? this.aIndent.push(0):this.aIndent.push(1);
	if (node._hc){
	str += '<a href="javascript:' + this.obj + '.o(' + nodeId + ');
	"><img id="j' + this.obj + nodeId + '" src="';
	if (!this.config.useLines) str += (node._io) ? this.icon.nlMinus:this.icon.nlPlus;
	else str += ( (node._io) ? ((node._ls && this.config.useLines) ? this.icon.minusBottom:this.icon.minus):((node._ls && this.config.useLines) ? this.icon.plusBottom:this.icon.plus ) );
	str += '" alt="" /></a>';
}
else str += '<img src="' + ( (this.config.useLines) ? ((node._ls) ? this.icon.joinBottom:this.icon.join ):this.icon.empty) + '" alt="" />';
}
return str;
}
;
	// Checks if a node has any children and if it is the last siblingdTree.prototype.setCS = function(node){
	var lastId;
	for (var n=0;
	n<this.aNodes.length;
	n++){
	if (this.aNodes[n].pid == node.id) node._hc = true;
	if (this.aNodes[n].pid == node.pid) lastId = this.aNodes[n].id;
}
if (lastId==node.id) node._ls = true;
}
;
	// Returns the selected nodedTree.prototype.getSelected = function(){
	var sn = this.getCookie('cs' + this.obj);
	return (sn) ? sn:null;
}
;
	// Highlights the selected nodedTree.prototype.s = function(id){
	if (!this.config.useSelection) return;
	var cn = this.aNodes[id];
	if (cn._hc && !this.config.folderLinks) return;
	if (this.selectedNode != id){
	if (this.selectedNode || this.selectedNode==0){
	eOld = document.getElementById("s" + this.obj + this.selectedNode);
	eOld.className = "node";
}
eNew = document.getElementById("s" + this.obj + id);
	eNew.className = "nodeSel";
	this.selectedNode = id;
	if (this.config.useCookies) this.setCookie('cs' + this.obj,cn.id);
}
}
;
	// Toggle Open or closedTree.prototype.o = function(id){
	var cn = this.aNodes[id];
	this.nodeStatus(!cn._io,id,cn._ls);
	cn._io = !cn._io;
	if (this.config.closeSameLevel) this.closeLevel(cn);
	if (this.config.useCookies) this.updateCookie();
}
;
	// Open or close all nodesdTree.prototype.oAll = function(status){
	for (var n=0;
	n<this.aNodes.length;
	n++){
	if (this.aNodes[n]._hc && this.aNodes[n].pid != this.root.id){
	this.nodeStatus(status,n,this.aNodes[n]._ls)this.aNodes[n]._io = status;
}
}
if (this.config.useCookies) this.updateCookie();
}
;
	// Opens the tree to a specific nodedTree.prototype.openTo = function(nId,bSelect,bFirst){
	if (!bFirst){
	for (var n=0;
	n<this.aNodes.length;
	n++){
	if (this.aNodes[n].id == nId){
	nId=n;
	break;
}
}
}
var cn=this.aNodes[nId];
	if (cn.pid==this.root.id || !cn._p) return;
	cn._io = true;
	cn._is = bSelect;
	if (this.completed && cn._hc) this.nodeStatus(true,cn._ai,cn._ls);
	if (this.completed && bSelect) this.s(cn._ai);
	else if (bSelect) this._sn=cn._ai;
	this.openTo(cn._p._ai,false,true);
}
;
	// Closes all nodes on the same level as certain nodedTree.prototype.closeLevel = function(node){
	for (var n=0;
	n<this.aNodes.length;
	n++){
	if (this.aNodes[n].pid == node.pid && this.aNodes[n].id != node.id && this.aNodes[n]._hc){
	this.nodeStatus(false,n,this.aNodes[n]._ls);
	this.aNodes[n]._io = false;
	this.closeAllChildren(this.aNodes[n]);
}
}
}
// Closes all children of a nodedTree.prototype.closeAllChildren = function(node){
	for (var n=0;
	n<this.aNodes.length;
	n++){
	if (this.aNodes[n].pid == node.id && this.aNodes[n]._hc){
	if (this.aNodes[n]._io) this.nodeStatus(false,n,this.aNodes[n]._ls);
	this.aNodes[n]._io = false;
	this.closeAllChildren(this.aNodes[n]);
}
}
}
// Change the status of a node(open or closed)dTree.prototype.nodeStatus = function(status,id,bottom){
	eDiv= document.getElementById('d' + this.obj + id);
	eJoin= document.getElementById('j' + this.obj + id);
	if (this.config.useIcons){
	eIcon= document.getElementById('i' + this.obj + id);
	eIcon.src = (status) ? this.aNodes[id].iconOpen:this.aNodes[id].icon;
}
eJoin.src = (this.config.useLines)?((status)?((bottom)?this.icon.minusBottom:this.icon.minus):((bottom)?this.icon.plusBottom:this.icon.plus)):((status)?this.icon.nlMinus:this.icon.nlPlus);
	eDiv.style.display = (status) ? 'block':'none';
}
;
	// [Cookie] Clears a cookiedTree.prototype.clearCookie = function(){
	var now = new Date();
	var yesterday = new Date(now.getTime() - 1000 * 60 * 60 * 24);
	this.setCookie('co'+this.obj,'cookieValue',yesterday);
	this.setCookie('cs'+this.obj,'cookieValue',yesterday);
}
;
	// [Cookie] Sets value in a cookiedTree.prototype.setCookie = function(cookieName,cookieValue,expires,path,domain,secure){
	document.cookie =escape(cookieName) + '=' + escape(cookieValue)+ (expires ? ';
	expires=' + expires.toGMTString():'')+ (path ? ';
	path=' + path:'')+ (domain ? ';
	domain=' + domain:'')+ (secure ? ';
	secure':'');
}
;
	// [Cookie] Gets a value from a cookiedTree.prototype.getCookie = function(cookieName){
	var cookieValue = '';
	var posName = document.cookie.indexOf(escape(cookieName) + '=');
	if (posName != -1){
	var posValue = posName + (escape(cookieName) + '=').length;
	var endPos = document.cookie.indexOf(';
	',posValue);
	if (endPos != -1) cookieValue = unescape(document.cookie.substring(posValue,endPos));
	else cookieValue = unescape(document.cookie.substring(posValue));
}
return (cookieValue);
}
;
	// [Cookie] Returns ids of open nodes as a stringdTree.prototype.updateCookie = function(){
	var str = '';
	for (var n=0;
	n<this.aNodes.length;
	n++){
	if (this.aNodes[n]._io && this.aNodes[n].pid != this.root.id){
	if (str) str += '.';
	str += this.aNodes[n].id;
}
}
this.setCookie('co' + this.obj,str);
}
;
	// [Cookie] Checks if a node id is in a cookiedTree.prototype.isOpen = function(id){
	var aOpen = this.getCookie('co' + this.obj).split('.');
	for (var n=0;
	n<aOpen.length;
	n++)if (aOpen[n] == id) return true;
	return false;
}
;
	// If Push and pop is not implemented by the browserif (!Array.prototype.push){
	Array.prototype.push = function array_push(){
	for(var i=0;
	i<arguments.length;
	i++)this[this.length]=arguments[i];
	return this.length;
}
}
;
	if (!Array.prototype.pop){
	Array.prototype.pop = function array_pop(){
	lastElement = this[this.length-1];
	this.length = Math.max(this.length-1,0);
	return lastElement;
}
}
;

CSS代码(dtree.css):

/*--------------------------------------------------|| dTree 2.05 | www.destroydrop.com/javascript/tree/ ||---------------------------------------------------|| Copyright (c) 2002-2003 Geir Landr� ||--------------------------------------------------*/
.dtree{font-family:Verdana,Geneva,Arial,Helvetica,sans-serif;font-size:11px;color:#666;white-space:nowrap;}
.dtree img{border:0px;vertical-align:middle;}
.dtree a{color:#333;text-decoration:none;}
.dtree a.node,.dtree a.nodeSel{white-space:nowrap;padding:1px 2px 1px 2px;}
.dtree a.node:hover,.dtree a.nodeSel:hover{color:#333;text-decoration:underline;}
.dtree a.nodeSel{background-color:#c0d2ec;}
.dtree .clip{overflow:hidden;}

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