我自定义.ztree li a:hover和.ztree li a.curSelectedNode的样式，文字变红色变粗。
之后通过fontCss将drag==false的节点设置为灰色粗体，但是将节点的drag设置为true后，
不知道怎么让节点变回正常状态，即没鼠标经过没选中为正常字体，选中或鼠标经过为红色粗体。
能不能增加方法，符合条件时设置成设定的样式，不符合的变回正常样式？

试了还是不行。
主要问题不在鼠标移入移出的样式，这个已经有 .ztree li a:hover在做设置了。
而在根据 drag==false设置节点样式，我是通过fontCss改变不可拖拽节点的样式的，但是节点变回可拖拽状态后，却无法恢复正常样式。
function setFontCss(treeId, treeNode) { return (treeNode.drag == false) ? {color:"#ADADAD", "font-weight":"bold"} : {}; }
当然，可以自己设定 drag==true的样式{color:"#333", "font-weight":"normal"} ，但是这时鼠标经过时，没有了特殊的样式。

修改属性以后，别忘了用 updateNode 触发更新节点

<!DOCTYPE html><HTML><HEAD><TITLE> ZTREE DEMO - edit</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.all-3.5.min.js"></script><SCRIPT type="text/javascript"><!--var setting = {view : {addHoverDom: addHoverDom,removeHoverDom: removeHoverDom,selectedMulti: true},edit: {enable: true,editNameSelectAll: true,removeTitle : "删除",renameTitle : "编辑",showRemoveBtn: true,showRenameBtn: showRenameBtn,drag: {isCopy: false,isMove: true,prev: canPrevAndNext,next: canPrevAndNext,inner: true}},data: {keep: {leaf: true,parent: true},simpleData: {enable: true}},callback: {//beforeDrag: beforeDragbeforeRemove: zTreeBeforeRemove,beforeRename: zTreeBeforeRename,beforeDrop: zTreeBeforeDrop}};var setting2 = {view : {fontCss: setFontCss,dblClickExpand : true,selectedMulti: true,expandSpeed: "fast"},edit: {enable: true,drag: {isCopy: true,isMove: false,prev: false,next: false,inner: false},showRemoveBtn: false,showRenameBtn: false},data : {keep: {leaf: true,parent: true},simpleData : {enable : true}},callback : {beforeDrag: beforeDrag,beforeDrop: zTreeBeforeDrop}};
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:2, pId:0, name:"父节点 2", open:true},{ id:21, pId:2, name:"叶子节点 2-1"},{ id:23, pId:2, name:"叶子节点 2-3"},{ id:3, pId:0, name:"父节点 3", open:true},{ id:32, pId:3, name:"叶子节点 3-2"},{ id:33, pId:3, name:"叶子节点 3-3"}];var zNodes2 =[{ id:1, pId:0, name:"父节点 1", open:true, drag:false},{ 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:14, pId:1, name:"父节点 14", open:true, drag:false},{ id:141, pId:14, name:"叶子节点 14-1"},{ id:142, pId:14, name:"叶子节点 14-2"},{ id:143, pId:14, name:"叶子节点 14-3"},{ id:2, pId:0, name:"父节点 2", open:true, drag:false},{ 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, drag:false},{ 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"}];function canPrevAndNext(treeId, nodes, targetNode) {return !targetNode.isParent;}//用于捕获节点被拖拽之前的事件回调函数，并且根据返回值确定是否允许开启拖拽操作function beforeDrag(treeId, treeNodes) {for (var i=0,l=treeNodes.length; i<l; i++) {if (treeNodes[i].drag === false) {return false;} else if (treeNodes[i].parentTId && treeNodes[i].getParentNode().childDrag === false) {return false;}}return true;}//节点后的新建文件夹图标方法var newCount = 1;function addHoverDom(treeId, treeNode) {var sObj = $("#" + treeNode.tId + "_span");if (!treeNode.isParent || treeNode.editNameFlag || $("#addBtn_"+treeNode.tId).length>0) return;var addStr = "<span class='button add' id='addBtn_" + treeNode.tId+ "' title='新建文件夹' onfocus='this.blur();'></span>";sObj.after(addStr);var btn = $("#addBtn_"+treeNode.tId);if (btn) btn.bind("click", function(){var zTree = $.fn.zTree.getZTreeObj(treeId);var currentTime = GetCurrentTime();treeNode = zTree.addNodes(treeNode, {id:currentTime, pId:treeNode.id, isParent:true, name:"新建文件夹" + (newCount++)});if (treeNode) {zTree.editName(treeNode[0]);} else {alert("新建文件夹失败!请稍后再试");}});};function removeHoverDom(treeId, treeNode) {$("#addBtn_"+treeNode.tId).unbind().remove();};function showRenameBtn(treeId, treeNode) {return treeNode.isParent;}function updateNodes(nodeList) {var zTree = $.fn.zTree.getZTreeObj("treeDemo2");for( var i=0; i<nodeList.length; i++) {nodeList[i].drag = (nodeList[i].drag == null) ? false: !nodeList[i].drag;zTree.updateNode(nodeList[i]);}}//个性化样式function setFontCss(treeId, treeNode) {return (treeNode.drag == false) ? {color:"#ADADAD", "font-weight":"bold"} : {color:"#333", "font-weight":"normal"};}//用于捕获节点被删除之前的事件回调函数，并且根据返回值确定是否允许删除操作function zTreeBeforeRemove(treeId, treeNode) {if(!confirm(" 确认删除\""+treeNode.name +"\"及其子节点？")){ return false;}changNodesStat(treeNode);return true;}//用于捕获节点编辑名称结束（Input 失去焦点 或 按下 Enter 键）之后，更新节点名称数据之前的事件回调函数，并且根据返回值确定是否允许更改名称的操作function zTreeBeforeRename(treeId, treeNode, newName, isCancel) {if (newName.length == 0) {alert("名称不能为空!");var zTree = $.fn.zTree.getZTreeObj(treeId);setTimeout(function(){zTree.editName(treeNode);}, 10);return false;}}//用于捕获节点拖拽操作结束之前的事件回调函数，并且根据返回值确定是否允许此拖拽操作function zTreeBeforeDrop(treeId, treeNodes, targetNode, moveType) {updateNodes(treeNodes);}//“新建文件夹”按钮的方法function add(e) {var zTree = $.fn.zTree.getZTreeObj("treeDemo"),isParent = e.data.isParent,nodes = zTree.getSelectedNodes(),treeNode = nodes[0];if (treeNode && !treeNode.isParent == true) {alert("只能在文件夹或根目录下新建文件夹！");return;}var pId = (treeNode) ? treeNode.id : "0";var currentTime = GetCurrentTime();treeNode = zTree.addNodes(treeNode, {id:currentTime, pId:pId, isParent:isParent, name:"新建文件夹" + (newCount++)});if (treeNode) {zTree.editName(treeNode[0]);} else {alert("新建文件夹失败!请稍后再试");}};function GetCurrentTime() {var myDate = new Date();var year = myDate.getFullYear();var month = parseInt(myDate.getMonth().toString()) + 1; //month是从0开始计数的，因此要 + 1var date = myDate.getDate();var hour = myDate.getHours();var minute = myDate.getMinutes();var second = myDate.getSeconds();var millisecond = myDate.getMilliseconds();if (month < 10) month = "0" + month.toString();if (date < 10) date = "0" + date.toString();if (hour < 10) hour = "0" + hour.toString();if (minute < 10) minute = "0" + minute.toString();if (second < 10) second = "0" + second.toString();if(millisecond < 10){millisecond = "00" + millisecond.toString();}else if(millisecond < 100){millisecond = "0" + millisecond.toString();}var currentTime = year.toString() + month.toString() + date.toString() + hour.toString() + minute.toString() + second.toString() + millisecond.toString(); //返回时间的数字组合return currentTime;}function changNodesStat(treeNode){if(treeNode && treeNode.isParent === false){var zTree2 = $.fn.zTree.getZTreeObj("treeDemo2");var node = zTree2.getNodeByParam("id", treeNode.id);if(node) updateNodes([node]);}else {var nodes = filterNodes(treeNode);updateNodes(nodes);}}//自定义过滤器，传入treeDemo的父节点treeNode，返回treeDemo2中匹配id与treeNode下的叶子节点相同的节点function filterNodes(treeNode){var zTree2 = $.fn.zTree.getZTreeObj("treeDemo2");var nodes = zTree2.getNodesByFilter(filter,false,null,treeNode);return nodes;}function filter(node,treeNode) {var flag = false;var zTree = $.fn.zTree.getZTreeObj("treeDemo");var nodes = zTree.getNodesByParam("isParent", false , treeNode);for ( var i = 0; i < nodes.length; i++) {flag = (nodes[i].id == node.id);if(flag)break;}return flag;}$(document).ready(function(){$.fn.zTree.init($("#treeDemo"), setting, zNodes);$.fn.zTree.init($("#treeDemo2"), setting2, zNodes2);$("#addParent").bind("click", {isParent:true}, add);changNodesStat();
//获取全部节点//var zTree2 = $.fn.zTree.getZTreeObj("treeDemo2");//var nodes = zTree2.getNodesByParam("null", null , null);//alert(nodes.length);});//--></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>
<div class="content_wrap"><div class="zTreeDemoBackground left">常用指标：<input type="button" id="addParent" value="新建文件夹" onclick="return false;"><ul id="treeDemo" class="ztree"></ul></div><div class="zTreeDemoBackground right">全量指标：<ul id="treeDemo2" class="ztree"></ul></div></div>
</BODY></HTML>
这是我的代码

如图，个性化样式生效了，不可拖拽灰色，可拖拽黑色，但是选中状态却没有左边的效果。
function setFontCss(treeId, treeNode) {return (treeNode.drag == false) ? {color:"#ADADAD","font-weight":"bold"} : {color:"#333", "font-weight":"normal"};}
.ztree li a:hover {color:#A60000;font-weight:bold;text-decoration:none}.ztree li a.curSelectedNode {padding-top:0px; background-color:#FFE6B0; color:#A60000;font-weight:bold; height:16px; border:1px #FFB951 solid; opacity:0.8;}

回复 zTreeAPI :
但是可拖拽的时候，直接return null的情况下，节点样式是保留不可拖拽的样式

function setFontCss(treeId, treeNode) {return (treeNode.drag == false) ? {color:"#ADADAD","font-weight":"bold"} : {color:"", "font-weight":""};}
这样就应该可以了

各位大神，请问ztree同一节点怎么设置不同颜色？