text: <!DOCTYPE html>
  <HTML>
  <HEAD>
  	<TITLE> ZTREE DEMO - big data page</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.js"></script>
  	<script type="text/javascript" src="../../../js/jquery.ztree.excheck.js"></script>
  	<script type="text/javascript" src="../../../js/jquery.ztree.exedit.js"></script>
  	<SCRIPT type="text/javascript">
  		<!--
  		var setting = {
  			async: {
  				enable: true,
  				url: getUrl
  			},
  			check: {
  				enable: true
  			},
  			data: {
  				simpleData: {
  					enable: true
  				}
  			},
  			view: {
  				addDiyDom: addDiyDom
  			},
  			callback: {
  				beforeExpand: beforeExpand,
  				onAsyncSuccess: onAsyncSuccess,
  				onAsyncError: onAsyncError
  			}
  		};
  
  		var zNodes =[
  			{name:"分页测试", t:"请点击分页按钮", id:"1", count:2000, page:0, pageSize:100, isParent:true}
  		];
  		var curPage = 0;
  		function getUrl(treeId, treeNode) {
  			var param = "id="+ treeNode.id +"_"+treeNode.page +"&count="+treeNode.pageSize,
  			aObj = $("#" + treeNode.tId + "_a");
  			aObj.attr("title", "当前第 " + treeNode.page + " 页 / 共 " + treeNode.maxPage + " 页")
  			return "../asyncData/getNodesForBigData.php?" + param;
  		}
  		function goPage(treeNode, page) {
  			treeNode.page = page;
  			if (treeNode.page<1) treeNode.page = 1;
  			if (treeNode.page>treeNode.maxPage) treeNode.page = treeNode.maxPage;
  			if (curPage == treeNode.page) return;
  			curPage = treeNode.page;
  			var zTree = $.fn.zTree.getZTreeObj("treeDemo");
  			zTree.reAsyncChildNodes(treeNode, "refresh");
  		}
  		function beforeExpand(treeId, treeNode) {
  			if (treeNode.page == 0) treeNode.page = 1;
  			return !treeNode.isAjaxing;
  		}
  		function onAsyncSuccess(event, treeId, treeNode, msg) {
  			
  		}
  		function onAsyncError(event, treeId, treeNode, XMLHttpRequest, textStatus, errorThrown) {
  			var zTree = $.fn.zTree.getZTreeObj("treeDemo");
  			alert("异步获取数据出现异常。");
  			treeNode.icon = "";
  			zTree.updateNode(treeNode);
  		}
  		function addDiyDom(treeId, treeNode) {
  			if (treeNode.level>0) return;
  			var aObj = $("#" + treeNode.tId + "_a");
  			if ($("#addBtn_"+treeNode.id).length>0) return;
  			var addStr = "<span class='button lastPage' id='lastBtn_" + treeNode.id
  				+ "' title='last page' onfocus='this.blur();'></span><span class='button nextPage' id='nextBtn_" + treeNode.id
  				+ "' title='next page' onfocus='this.blur();'></span><span class='button prevPage' id='prevBtn_" + treeNode.id
  				+ "' title='prev page' onfocus='this.blur();'></span><span class='button firstPage' id='firstBtn_" + treeNode.id
  				+ "' title='first page' onfocus='this.blur();'></span>";
  			aObj.after(addStr);
  			var first = $("#firstBtn_"+treeNode.id);
  			var prev = $("#prevBtn_"+treeNode.id);
  			var next = $("#nextBtn_"+treeNode.id);
  			var last = $("#lastBtn_"+treeNode.id);
  			treeNode.maxPage = Math.round(treeNode.count/treeNode.pageSize - .5) + (treeNode.count%treeNode.pageSize == 0 ? 0:1);
  			first.bind("click", function(){
  				if (!treeNode.isAjaxing) {
  					goPage(treeNode, 1);
  				}
  			});
  			last.bind("click", function(){
  				if (!treeNode.isAjaxing) {
  					goPage(treeNode, treeNode.maxPage);
  				}
  			});
  			prev.bind("click", function(){
  				if (!treeNode.isAjaxing) {
  					goPage(treeNode, treeNode.page-1);
  				}
  			});
  			next.bind("click", function(){
  				if (!treeNode.isAjaxing) {
  					goPage(treeNode, treeNode.page+1);
  				}
  			});
  		};
  		
  		$(document).ready(function(){
  			$.fn.zTree.init($("#treeDemo"), setting, zNodes);
  		});
  		//-->
  	</SCRIPT>
  	<style type="text/css">
  .ztree li span.button.firstPage {float:right; margin-left:2px; margin-right: 0; background-position:-144px -16px; vertical-align:top; *vertical-align:middle}
  .ztree li span.button.prevPage {float:right; margin-left:2px; margin-right: 0; background-position:-144px -48px; vertical-align:top; *vertical-align:middle}
  .ztree li span.button.nextPage {float:right; margin-left:2px; margin-right: 0; background-position:-144px -64px; vertical-align:top; *vertical-align:middle}
  .ztree li span.button.lastPage {float:right; margin-left:2px; margin-right: 0; background-position:-144px -32px; vertical-align:top; *vertical-align:middle}
  	</style>
   </HEAD>
  
  <BODY>
  <h1>分页加载大数据量</h1>
  <h6>[ 文件路径: bigdata/page.html ]</h6>
  <div class="content_wrap">
  	<div class="zTreeDemoBackground left">
  		<ul id="treeDemo" class="ztree"></ul>
  	</div>
  	<div class="right">
  		<ul class="info">
  			<li class="title"><h2>1、大数据量加载说明</h2>
  				<ul class="list">
  				<li>1)、分页方案可以有效解决某一级节点数据超大的情况。</li>
  				<li>2)、分页按钮通过自定义控件的方法实现。</li>
  				<li class="highlight_red">3)、分页方案对于 checkbox 的关联关系无能为力，只能每次翻页后进行修正。由于时间关系，Demo 中不对 checkbox 的关联进行任何修正处理。</li>
  				<li class="highlight_red">4)、分页方案中，从 zTree 得到的节点数据只有当前页的节点数据，可以在每次翻页后自行保存每页的数据，作为缓存，具体情况要根据实际需求来决定。</li>
  			</li>
  			<li class="title"><h2>2、setting 配置信息说明</h2>
  				<ul class="list">
  				<li>需要设置 setting.async 异步加载部分的参数</li>
  				<li>其他不需要进行特殊的配置，根据自己的需求自行设置</li>
  				</ul>
  			</li>
  			<li class="title"><h2>3、treeNode 节点数据说明</h2>
  				<ul class="list">
  				<li>对 节点数据 没有特殊要求，用户可以根据自己的需求添加自定义属性</li>
  				</ul>
  			</li>
  		</ul>
  	</div>
  </div>
  </BODY>
  </HTML>