基于jQuery的多功能“树插件” -- zTree

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多功能树形 javascript

zTree 是一个依靠 jQuery 实现的多功能 “树插件”。优异的性能、灵活的配置、多种功能的组合是 zTree 最大优点。zTree 是开源免费的软件（MIT 许可证）。

官网：http://www.ztree.me/

zTree v3.0 将核心代码按照功能进行了分割，不需要的代码可以不用加载
采用了延迟加载技术，上万节点轻松加载，即使在 IE6 下也能基本做到秒杀
兼容 IE、FireFox、Chrome、Opera、Safari 等浏览器
支持 JSON 数据
支持静态和 Ajax 异步加载节点数据
支持任意更换皮肤 / 自定义图标（依靠css）
支持极其灵活的 checkbox 或 radio 选择功能
提供多种事件响应回调
灵活的编辑（增/删/改/查）功能，可随意拖拽节点，还可以多节点拖拽哟
在一个页面内可同时生成多个 Tree 实例
简单的参数配置实现灵活多变的功能

<!DOCTYPE html>
<HTML>
<HEAD>
	<TITLE> ZTREE DEMO - beforeEditName / beforeRemove / onRemove / beforeRename / onRename</TITLE>
	<meta http-equiv="content-type" content="text/html; charset=UTF-8">
	<link rel="stylesheet" href="../../../css/demo.css" type="text/css">
	<link rel="stylesheet" href="../../../css/zTreeStyle/zTreeStyle.css" type="text/css">
	<script type="text/javascript" src="../../../js/jquery-1.4.4.min.js"></script>
	<script type="text/javascript" src="../../../js/jquery.ztree.core-3.3.js"></script>
	<script type="text/javascript" src="../../../js/jquery.ztree.excheck-3.3.js"></script>
	<script type="text/javascript" src="../../../js/jquery.ztree.exedit-3.3.js"></script>
	<SCRIPT type="text/javascript">
		<!--
		var setting = {
			view: {
				addHoverDom: addHoverDom,
				removeHoverDom: removeHoverDom,
				selectedMulti: false
			},
			edit: {
				enable: true,
				editNameSelectAll: true
			},
			data: {
				simpleData: {
					enable: true
				}
			},
			callback: {
				beforeDrag: beforeDrag,
				beforeEditName: beforeEditName,
				beforeRemove: beforeRemove,
				beforeRename: beforeRename,
				onRemove: onRemove,
				onRename: onRename
			}
		};

		var zNodes =[
			{ id:1, pId:0, name:"父节点 1", open:true},
			{ id:11, pId:1, name:"叶子节点 1-1"},
			{ id:12, pId:1, name:"叶子节点 1-2"},
			{ id:13, pId:1, name:"叶子节点 1-3"},
			{ id:2, pId:0, name:"父节点 2", open:true},
			{ id:21, pId:2, name:"叶子节点 2-1"},
			{ id:22, pId:2, name:"叶子节点 2-2"},
			{ id:23, pId:2, name:"叶子节点 2-3"},
			{ id:3, pId:0, name:"父节点 3", open:true},
			{ id:31, pId:3, name:"叶子节点 3-1"},
			{ id:32, pId:3, name:"叶子节点 3-2"},
			{ id:33, pId:3, name:"叶子节点 3-3"}
		];
		var log, className = "dark";
		function beforeDrag(treeId, treeNodes) {
			return false;
		}
		function beforeEditName(treeId, treeNode) {
			className = (className === "dark" ? "":"dark");
			showLog("[ "+getTime()+" beforeEditName ]&nbsp;&nbsp;&nbsp;&nbsp; " + treeNode.name);
			var zTree = $.fn.zTree.getZTreeObj("treeDemo");
			zTree.selectNode(treeNode);
			return confirm("进入节点 -- " + treeNode.name + " 的编辑状态吗？");
		}
		function beforeRemove(treeId, treeNode) {
			className = (className === "dark" ? "":"dark");
			showLog("[ "+getTime()+" beforeRemove ]&nbsp;&nbsp;&nbsp;&nbsp; " + treeNode.name);
			var zTree = $.fn.zTree.getZTreeObj("treeDemo");
			zTree.selectNode(treeNode);
			return confirm("确认删除 节点 -- " + treeNode.name + " 吗？");
		}
		function onRemove(e, treeId, treeNode) {
			showLog("[ "+getTime()+" onRemove ]&nbsp;&nbsp;&nbsp;&nbsp; " + treeNode.name);
		}
		function beforeRename(treeId, treeNode, newName) {
			className = (className === "dark" ? "":"dark");
			showLog("[ "+getTime()+" beforeRename ]&nbsp;&nbsp;&nbsp;&nbsp; " + treeNode.name);
			if (newName.length == 0) {
				alert("节点名称不能为空.");
				var zTree = $.fn.zTree.getZTreeObj("treeDemo");
				setTimeout(function(){zTree.editName(treeNode)}, 10);
				return false;
			}
			return true;
		}
		function onRename(e, treeId, treeNode) {
			showLog("[ "+getTime()+" onRename ]&nbsp;&nbsp;&nbsp;&nbsp; " + treeNode.name);
		}
		function showLog(str) {
			if (!log) log = $("#log");
			log.append("<li class='"+className+"'>"+str+"</li>");
			if(log.children("li").length > 8) {
				log.get(0).removeChild(log.children("li")[0]);
			}
		}
		function getTime() {
			var now= new Date(),
			h=now.getHours(),
			m=now.getMinutes(),
			s=now.getSeconds(),
			ms=now.getMilliseconds();
			return (h+":"+m+":"+s+ " " +ms);
		}

		var newCount = 1;
		function addHoverDom(treeId, treeNode) {
			var sObj = $("#" + treeNode.tId + "_span");
			if (treeNode.editNameFlag || $("#addBtn_"+treeNode.id).length>0) return;
			var addStr = "<span class='button add' id='addBtn_" + treeNode.id
				+ "' title='add node' onfocus='this.blur();'></span>";
			sObj.after(addStr);
			var btn = $("#addBtn_"+treeNode.id);
			if (btn) btn.bind("click", function(){
				var zTree = $.fn.zTree.getZTreeObj("treeDemo");
				zTree.addNodes(treeNode, {id:(100 + newCount), pId:treeNode.id, name:"new node" + (newCount++)});
				return false;
			});
		};
		function removeHoverDom(treeId, treeNode) {
			$("#addBtn_"+treeNode.id).unbind().remove();
		};
		function selectAll() {
			var zTree = $.fn.zTree.getZTreeObj("treeDemo");
			zTree.setting.edit.editNameSelectAll =  $("#selectAll").attr("checked");
		}
		
		$(document).ready(function(){
			$.fn.zTree.init($("#treeDemo"), setting, zNodes);
			$("#selectAll").bind("click", selectAll);
		});
		//-->
	</SCRIPT>
<style type="text/css">
.ztree li span.button.add {margin-left:2px; margin-right: -1px; background-position:-144px 0; vertical-align:top; *vertical-align:middle}
</style>
</HEAD>
<BODY>
	<ul id="treeDemo" class="ztree"></ul>
</BODY>
</HTML>