效果图：
代码：
<!DOCTYPE html>
<HTML>
<HEAD>
<TITLE> ZTREE DEMO - one click</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 = {
view: {
dblClickExpand: false,
showLine: false
},
data: {
simpleData: {
enable: true
}
},
callback: {
onClick: onClick
}
};
var zNodes =[
{ id:1, pId:0, name:"根 Root", open:true},
{ id:11, pId:1, name:"父节点 1-1", open:true},
{ id:111, pId:11, name:"叶子节点 1-1-1"},
{ id:112, pId:11, name:"叶子节点 1-1-2"},
{ id:113, pId:11, name:"叶子节点 1-1-3"},
{ id:114, pId:11, name:"叶子节点 1-1-4"},
{ id:12, pId:1, name:"父节点 1-2", open:true},
{ id:121, pId:12, name:"叶子节点 1-2-1"},
{ id:122, pId:12, name:"叶子节点 1-2-2"},
{ id:123, pId:12, name:"叶子节点 1-2-3"},
{ id:124, pId:12, name:"叶子节点 1-2-4"},
{ id:13, pId:1, name:"父节点 1-3", open:true},
{ id:131, pId:13, name:"叶子节点 1-3-1"},
{ id:132, pId:13, name:"叶子节点 1-3-2"},
{ id:133, pId:13, name:"叶子节点 1-3-3"},
{ id:134, pId:13, name:"叶子节点 1-3-4"}
];
function onClick(e,treeId, treeNode) {
var zTree = $.fn.zTree.getZTreeObj("treeDemo");
zTree.expandNode(treeNode);
}
$(document).ready(function(){
$.fn.zTree.init($("#treeDemo"), setting, zNodes);
});
//-->
</SCRIPT>
<style type="text/css">
.ztree li button.switch {visibility:hidden; width:1px;}
.ztree li button.switch.roots_docu {visibility:visible; width:16px;}
.ztree li button.switch.center_docu {visibility:visible; width:16px;}
.ztree li button.switch.bottom_docu {visibility:visible; width:16px;}
</style>
</HEAD>
<BODY>
<h1>单击展开/折叠节点</h1>
<h6>[ 文件路径: super/oneclick.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>实现方法说明</h2>
<ul class="list">
<li>zTree 默认不提供单击展开节点的功能，但可以利用 onClick 事件回调函数轻松实现此功能</li>
<li class="highlight_red">为了避免与双击功能冲突，建议关闭双击展开节点的功能，请设置 setting.view.dblClickExpand = false </li>
<li class="highlight_red">可以将所有的 +/- 开关隐藏，请查看本页面源码，查看 css 设置 </li>
<li class="highlight_red">由于 +/- 开关与 节点连接线是配套的，所以如果不显示 +/- 开关的话，那么请设置 setting.view.showLine = false 隐藏连接线 </li>
</ul>
</li>
</ul>
</div>
</div>
</BODY>
</HTML>
