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。
页面主要引入一下几个文件：
<link type="text/css" href="https://www.jb51.net/zTree/zTreeStyle.css" /> <script type="text/javascript" src="https://www.jb51.net/js/jquery.ztree.core-3.5.js"></script> <script type="text/javascript" src="https://www.jb51.net/js/jquery.ztree.excheck-3.5.js"></script>
html页面:
<div> <div> <div> <span>权限列表</span> </div> <div> <ul></ul> </div> </div> </div>
核心js:
<SCRIPT type="text/javascript"> var zTree; //创建树型结构 function createTree() { var setting = { check:{ enable:true }, view: { dblClickExpand: true, expandSpeed: "" }, //异步加载 async: { enable: true,//设置是否异步加载 url:"<%=path%>/role/getResourcesList.do", //设置异步获取节点的 URL 地址 otherParam: [ "roleId", '${updateRole.id}'] }, //这个data里面的pIdKey,idKey,name等等之类的都是对应后台查出的字段名字， 在sql中写好或者在拼接json的时候先拼接好，前太接收的时候只要对应一直就可以了 data: { simpleData: { enable: true, pIdKey: "PARENTID", idKey: "ID" }, key: { checked: "CHECKED", name:"NAME" } }, callback: { onAsyncSuccess: zTreeOnAsyncSuccess } }; //初始化 zTree = $.fn.zTree.init($("#tree"), setting); zTree.expandAll(true); } /* 异步加载无法展开tree 默认展开一级菜单 */ var firstAsyncSuccessFlag = 0; function zTreeOnAsyncSuccess(event, treeId, msg) { if (firstAsyncSuccessFlag == 0) { try { //调用默认展开第一个结点 var selectedNode = zTree.getSelectedNodes(); var nodes = zTree.getNodes(); zTree.expandNode(nodes[0], true); var childNodes = zTree.transformToArray(nodes[0]); zTree.expandNode(childNodes[1], true); zTree.selectNode(childNodes[1]); var childNodes1 = zTree.transformToArray(childNodes[1]); zTree.checkNode(childNodes1[1], true, true); firstAsyncSuccessFlag = 1; } catch (err) { } } } $(function(){ //页面加载完成创建树 createTree(); }); function submitRole(){ //获取选中的节点，传到后台 var nodes = zTree.getCheckedNodes(); var ids = []; for(var i=0,l=nodes.length;i<l;i++){ ids[ids.length] = nodes[i].ID; } //var _resourcesIds=ids.join(","); document.getElementById("hidden_resourceList").value=ids.join(","); //$("#resourcesRoleListForm").submit(); } </SCRIPT>