本文实例讲解了jQuery使用zTree插件实现树形菜单和异步加载，并且可以进行编辑，分享给大家供大家参考，具体内容如下
效果图：
一、HTML代码
<html>
<head runat="server">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title></title>
<link href="zTree/csshttps://img.qb5200.com/download-x/demo.css" rel="stylesheet" />
<link href="zTree/css/zTreeStyle/zTreeStyle.css" rel="stylesheet" />
<script src="zTree/js/jquery-1.4.4.min.js"></script>
<script src="zTree/js/jquery.ztree.core-3.5.js"></script>
<script src="zTree/js/jquery.ztree.excheck-3.5.js"></script>
<script src="zTree/js/jquery.ztree.exedit-3.5.js"></script>
<script type="text/javascript">
var setting = {
async: {
enable: true,
url: "AjaxPage/GetAjax.aspx?z=sdfww234edfsd",
autoParam: ["id"],
dataFilter: filter,
contentType: "application/json",
type:"get"
},
view: {
expandSpeed: "",
addHoverDom: addHoverDom,
removeHoverDom: removeHoverDom,
selectedMulti: false
},
check: {
enable: true
},
edit: {
enable: true
},
data: {
simpleData: {
enable: true
}
},
callback: {
beforeRemove: beforeRemove,
beforeRename: beforeRename,
}
};
function filter(treeId, parentNode, childNodes) {
if (!childNodes) return null;
for (var i = 0, l = childNodes.length; i < l; i++) {
childNodes[i].name = childNodes[i].name.replace(/\.n/g, '.');
}
return childNodes;
}
function beforeRemove(treeId, treeNode) {
var zTree = $.fn.zTree.getZTreeObj("treeDemo");
zTree.selectNode(treeNode);
return confirm("确认删除 节点 -- " + treeNode.name + " 吗？");
}
function beforeRename(treeId, treeNode, newName) {
if (newName.length == 0) {
alert("节点名称不能为空.");
return false;
}
return true;
}
var newCount = 1;
function addHoverDom(treeId, treeNode) {
var sObj = $("#" + treeNode.tId + "_span");
if (treeNode.editNameFlag || $("#addBtn_" + treeNode.tId).length > 0) return;
var addStr = "<span class='button add' id='addBtn_" + treeNode.tId
+ "' title='add node' onfocus='this.blur();'></span>";
sObj.after(addStr);
console.log("add " + "#addBtn_" + treeNode.id);
var btn = $("#addBtn_" + treeNode.tId);
if (btn) btn.bind("click", function () {
var zTree = $.fn.zTree.getZTreeObj("treeDemo");
zTree.addNodes(treeNode, { id: (100 + newCount), pId: treeNode.id, name: "new node" + (newCount++) });
return false;
});
};
function removeHoverDom(treeId, treeNode) {
console.log("remove " + "#addBtn_" + treeNode.id);
$("#addBtn_" + treeNode.tId).unbind().remove();
};
$(document).ready(function () {
$.fn.zTree.init($("#treeDemo"), setting);
});
</script>
</head>
<body>
<ul id="treeDemo" class="ztree" style="width: 560px; overflow: auto;"></ul>
</body>
</html>
二、异步请求的后台数据：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace CssStudyWeb.AjaxPage
{
public partial class GetAjax : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (Request.QueryString["z"] == "sdfww234edfsd")//根据会员卡号，查询会员卡信息
{
StringBuilder sb = new StringBuilder();
sb.Append("[");
sb.Append("{\"id\":\"1\",\"name\":\"销售单管理\",\"pId\":\"0\"},");
sb.Append("{\"id\":\"101\",\"name\":\"销售单列表\",\"pId\":\"1\"},");
sb.Append("{\"id\":\"102\",\"name\":\"销售单综合查询\",\"pId\":\"1\"},");
sb.Append("{\"id\":\"2\",\"name\":\"系统管理\",\"pId\":\"0\"},");
sb.Append("{\"id\":\"103\",\"name\":\"权限组管理\",\"pId\":\"2\"},");
sb.Append("{\"id\":\"104\",\"name\":\"权限菜单管理\",\"pId\":\"2\"}");
sb.Append("]");
Response.Write(sb.ToString());
}
}
}
}
更多关于ztree控件的内容，请参考专题《jQuery插件ztree使用汇总》
以上就是zTree插件实现树形菜单和异步加载的全部代码，希望对大家的学习有所帮助。
