<div id="index_tree" style="height: 100%; width: 100%; overflow: auto; display: block;" oncontextmenu="return false;"></div><script type="text/javascript">    tree=new dhtmlXTreeObject("index_tree","100%","100%",0);    tree.setImagePath("<%=request.getContextPath()%>/js/imgs/csh_dhx_skyblue/");    tree.enableCheckBoxes(1);    tree.enableThreeStateCheckboxes(true);    tree.loadXML("<%=request.getContextPath()%>/alarmMenuTreeAction.do?function=getAlarmMenuTree&alarmId=${alarmId}&type=${type}");    tree.setXMLAutoLoading("<%=request.getContextPath()%>/alarmMenuTreeAction.do?function=getAlarmMenuTree&alarmId=${alarmId}&type=${type}"); </script>

一、外观1.设置加减图标展示状态    tree.showItemSign(tree.getSelectedItemId(), false);(false 隐藏  true 显示)2.设置树的方向    tree2.enableRTL(false);--默认false3.设置节点高度    enableMultiLineItems("300px");4.设置节点样式    setItemStyle(tree.getSelectedItemId(),document.getElementById(‘tuds‘).value)    <textarea id="tuds" rows="10" >font-weight:bold;    text-decoration:underline;5.设置大小符号信息    tree.enableTreeImages("-Icons");//设置是否显示图标    tree.enableTreeLines("-Lines");//设置是否显示连接线    tree.enableTextSigns("Cross Signs");//设置是否显示交叉线(即横线)6.设置选中的节点的topoffset    setItemTopOffset(tree.getSelectedItemId(),"60px")7.设置皮肤    tree.setSkin(‘dhx_skyblue‘);    tree.setImagePath("http://www.cnblogs.com/codebase/imgs/");    tree.setImagePath("http://www.cnblogs.com/codebase/imgs/csh_scbrblue/");    tree.setImagePath("http://www.cnblogs.com/codebase/imgs/csh_yellowbooks/");8.设置节点字体颜色    setItemColor(tree.getSelectedItemId(), color1, color2);color1=color29.设置图标    tree.setItemImage2(tree.getSelectedItemId(),‘leaf3.gif‘,‘leaf3.gif‘,‘leaf3.gif‘)二、复选框/单选    tree.enableCheckBoxes(1);//设置复选框    tree.enableThreeStateCheckboxes(true);//允许半选状态1.获取选中的节点    tree.getAllChecked()--不包括父节点2.获取未选中的节点    tree.getAllUnchecked()3.获取选中的节点，包括半选状态的    tree.getAllCheckedBranches()4.获取部分选中的节点对象(半选状态的节点)    tree.getAllPartiallyChecked()1+2=3 5.单选框    tree.enableCheckBoxes(1);    enableRadioButtons(‘db‘,true)--db是节点ID true则设置成单选框          setCheck(tree.getSelectedItemId(),true)--选中    setCheck(tree.getSelectedItemId(),false)--不选    showItemCheckbox(tree.getSelectedItemId(),false)--设置该节点为复选框    disableCheckbox(tree.getSelectedItemId(),true)--去除复选框    disableCheckbox(tree.getSelectedItemId(),false)--复选框失效    disableCheckbox(tree.getSelectedItemId(),true)--恢复    setSubChecked(tree.getSelectedItemId(),true)--设置节点下面的子节点全部选中    setSubChecked(tree.getSelectedItemId(),false)--设置节点下面的子节点全部不选中三、事件        右击事件        menu = new dhtmlXMenuObject();        menu.setIconsPath("../common/images/");        menu.renderAsContextMenu();        menu.attachEvent("onClick", onButtonClick);        menu.loadXML("../common/_context.xml");        menu.renderAsContextMenu();        menu.attachEvent("onClick", onButtonClick);        tree.enableContextMenu(menu);        拖拽事件        tree.enableDragAndDrop(true);                触发单击事件前的事件        tree.attachEvent("onBeforeContextMenu", function(itemId) {            if (tree.hasChildren(itemId) > 0) {            menu.hideItem(‘outher‘);            } else {            menu.showItem(‘outher‘);            }            return true;        });加载前/后事件    tree.setOnLoadingStart(func_a);    tree.setOnLoadingEnd(func_b);    右击事件    tree.setOnRightClickHandler(_rclick);双击事件    setOnDblClickHandler    tree.setOnOpenHandler(tonopen);    tree.attachEvent("onOpenEnd", function(nodeId, event) {            });

构造函数dhtmlXTreeObject(htmlObject, width, height, rootId)//rootId 虚拟根节点，在界面上不会显示，一般取值0replace IMG tag with background images - solve problem with IE image caching , not works for IE6 SP1enableIEImageFix(mode)析构函数destructor()实现继承clone()节点构造函数dhtmlXTreeItemObject(itemId,itemText,parentObject,treeObject,actionHandler,mode)// mode - do not show images从xml字符串加载树loadXMLString(xmlString,afterCall)//afterCall - function which will be called after xml loading从xml文件加载树loadXML(file,afterCall)新建子节点，前三个参数为必须的insertNewItem(parentId,itemId,itemText,itemActionHandler,image1,image2,image3,optionStr,childs)insertNewChild(parentId,itemId,itemText,itemActionHandler,image1,image2,image3,optionStr,childs)节点展开与收缩：[1-close 2-open]_HideShow(itemObject,mode)获取节点状态：0 - 没有子节点, -1 - 节点合拢, 1 - 节点展开_getOpenState(node)getOpenState(itemId)获取选中的节点IdgetSelectedItemId()选中节点_selectItem(node,e)获取节点的indexgetIndexById(itemId)设置鼠标右键点击事件setOnRightClickHandler(func)设置鼠标点击事件setOnClickHandler(func)设置节点状态改变事件setOnSelectStateChange(func)设置允许动态加载xml文件（异步加载）setXMLAutoLoading(filePath)设置checkbox点击事件setOnCheckHandler(func)设置节点展开/合拢事件setOnOpenHandler(func)设置节点开始展/合拢开事件setOnOpenStartHandler(func)设置节点展开/合拢结束事件setOnOpenEndHandler(func)设置节点双击事件setOnDblClickHandler(func)展开节点及下面所有子节点_xopenAll(node)//增加了不传递itemId的判断（1494）openAllItems(itemId)//不传递itemId参数则合拢根节点根据id获取节点_globalIdStorageFind(itemId)合拢节点及其下所有子节点_xcloseAll(node)//修改了原来逻辑的一个错误（1521）closeAllItems(itemId)//不传递itemId参数则合拢根节点为节点增加用户自定义的数据//修正一个错误（1548）setUserData(itemId,name,value)获取用户自定义的数据getUserData(itemId,name)获取节点颜色getItemColor(itemId)设置节点颜色setItemColor(itemId,defaultColor,selectedColor)获取节点名称--(with HTML formatting, if any)getItemText(itemId)获取父节点idgetParentId(itemId)更改节点idchangeItemId(itemId,newItemId)标记被剪切的节点doCut()粘贴被剪切的节点到新的父节点下doPaste(itemId)清空被剪切的节点clearCut()移动节点_moveNode(itemObject,targetObject)允许三种状态的复选框（全选、不选、部分选中）enableThreeStateCheckboxes(mode)// 1 - on, 0 - off;设置鼠标悬浮事件setOnMouseInHandler(func)设置鼠标移走事件setOnMouseOutHandler(func)设置是否允许显示树图片enableTreeImages=function(mode)//1 - on, 0 - off设置是否允许固定模式(对于显示复选框的界面美观一些，但没有水平滚动条)enableFixedMode(mode)// - 1 - on, 0 - off是否显示复选框enableCheckBoxes(mode, hidden)//mode 0/1 hidden 0/1设置节点图片setStdImages(image1,image2,image3)//a0 - image for node without childrens a1 - image for closed node a2 - image for opened node设置是否显示树线enableTreeLines(mode)设置图片setImageArrays(arrayName,image1,image2,image3,image4,image5)//image1 - line crossed image image2 - image with top line image3 - image with bottom line image4 - image without line image5 - single root image展开当前节点（一节）_openItem(node)openItem(itemId)合拢当前节点（一节）closeItem(itemId)获取节点的层节数getLevel(itemId)设置节点是否允许被合拢setItemCloseable(itemId,flag)//flag 0/1对于展开节点返回子节点数量，对于未加载子节点的节点（异步加载）返回truehasChildren(itemId)获取节点下的子节点数_getLeafCount(itemNode)设置节点名称setItemText(itemId,newLabel,newTooltip)获取节点tipgetItemTooltip(itemId)刷新节点refreshItem(itemId)设置节点图片setItemImage2(itemId, image1,image2,image3)//image1 - node without childrens image image2 - closed node image image3 - open node image设置节点图片setItemImage(itemId,image1,image2)//image1 - node without childrens image or closed node image (if image2 specified) image2 - open node image (optional) 获取节点下所有子节点id以逗号分割getSubItems(itemId)getAllSubItems(itemId)获取节点的所有子节点_getAllScraggyItems(node)获取选中节点的名称--(with HTML formatting, if any)getSelectedItemText()设置节点的选中状态setCheck(itemId,state)//state - checkbox state (0/1/unsure)设置节点及所有子节点的选中状态setSubChecked(itemId,state)获取节点的选中状态 return: node state (0 - unchecked,1 - checked, 2 - third state)isItemChecked(itemId)删除节点的所有子节点deleteChildItems(itemId)删除节点deleteItem(itemId,selectParent) //selectParent - If true parent of deleted item get selection, else no selected items leaving in tree.在节点下创建一个节点，前三个参数是必须的insertNewNext(itemId,newItemId,itemText,itemActionHandler,image1,image2,image3,optionStr,childs)根据index获取节点下子节点的idgetChildItemIdByIndex(itemId,index)//itemId 节点id设置拖动事件setDragHandler(func)设置是否允许拖拽//mode - enabled/disabled [ can be true/false/temporary_disabled - last value mean that tree can be D-n-D can be switched to true later ]//rmode - enabled/disabled drag and drop on super rootenableDragAndDrop(mode,rmode)设置是否允许IE缓存preventIECashing=function(mode)//mode - enable/disable random seed ( disabled by default )设置是否允许选中节点名称高亮显示enableHighlighting(mode)//mode - 1 - on, 0 - off是否允许图片可点击和拖拽(clickable and dragable)enableActiveImages(mode)// mode - 1 - on, 0 - off设置节点获得焦点focusItem(itemId)获取所有无子节点的节点idgetAllChildless()getAllLeafs()获取所有有子节点的节点idgetAllItemsWithKids（）获取所有被选中节点id，不包括第三中状态的节点（部分选中的节点）getAllChecked()获取所有被选中节点id，包括第三中状态的节点（部分选中的节点）getAllCheckedBranches()获取节点下所有未选中的节点id，不传递itemId表示从根节点开始查找getAllUnchecked(itemId)获取所有部分选中的节点id（因部分子节点选中而被选中的节点）getAllPartiallyChecked()设置节点样式setItemStyle(itemId,style_string)设置是否允许拖拽图片enableImageDrag(mode)set function called when tree item draged over another itemsetOnDragIn(func)设置拖拽是是否允许自动滚动enableDragAndDropScrolling(mode)补充说明：加载树时，必须确保所有节点的id不重复，否则控件会为重复id自动生成一个随机数（原id+"_"+当前日期）。增加了一个dhtmlXTreeExtend.js对原类进行扩展，增加了getAllCheckedLeaf()，getAllUcCheckedLeaf()两个函数修改了1个bug：1 增加没有选中节点时执行展开/收缩选定节点时报没有parentId的bugdhtmlXTreeObject.prototype.setSubChecked=function(itemId,state){if(itemId){var sNode=this._globalIdStorageFind(itemId);this._setSubChecked(state,sNode);this._correctCheckStates(sNode.parentObject);}}1 增加了未传递itemId参数时默认从根节点展开dhtmlXTreeObject.prototype.openAllItems=function(itemId){if (itemId==window.undefined) itemId=this.rootId;var temp=this._globalIdStorageFind(itemId);if (!temp) return 0;this._xopenAll(temp);};