jquery zTree异步加载、模糊搜索简单实例分享

本文实例为大家讲解了jquery zTree树插件的基本使用方法，具体内容如下

一、节点模糊搜索功能：搜索成功后，自动高亮显示并定位、展开搜索到的节点。

二、节点异步加载：1、点击展开时加载数据；2、选中节点时加载数据。 前台代码如下：

rush:js;">

rush:xhtml;">

后台代码（后台返回Json数据）：

rush:csharp;"> public void SelStudent() { set("getStudentsJsonUrl",to(GetStudentsJson)); }

public void GetStudentsJson()
{
List<Dictionary<string,string>> dicList = new List<Dictionary<string,string>>();

string level = ctx.Post("level");
string id = ctx.Post("id");
if (strUtil.IsNullOrEmpty(id))
{

region 加载班级

//获取当前登录用户
Sys_User user = AdminSecurityUtils.GetLoginUser(ctx);
//获取当前用户关联的老师
Edu_Teacher teacher = edu_TeacService.FindByUserId(user.Id);
//获取班级集合
List list = edu_ClaNameFlowService.GetListByTeacherId(teacher.Id);
foreach (Edu_ClaNameFlow item in list)
{
Dictionary<string,string> dic = new Dictionary<string,string>();
dic.Add("id","level0" + item.Calss.Id.ToString());
dic.Add("pId","0");
dic.Add("name",item.Gra.Name + item.Calss.Name);
dic.Add("isParent","true");
dicList.Add(dic);
}

endregion

}
else
{
if (level == "0")
{
//加载学生
List list = edu_StudService.GetListByClassId(id.Replace("level0",""));
foreach (Edu_Student item in list)
{
Dictionary<string,"level1" + item.Id.ToString());
dic.Add("pId",id);
dic.Add("name",item.Name);
dic.Add("isParent","false");
dicList.Add(dic);
}
}
}

echoJson(dicList);
}

三、基于cookie实现zTree树刷新后，展开状态不变

1、除了引用jQuery和zTree的JS外，引用cookie的JS：

代码如下:

2、JS代码：

rush:js;"> $(function () { //ztree设置 var setting = { data: { simpleData: { enable: true,rootPId: null } },callback: { onExpand: onExpand,onCollapse: onCollapse } };

$.ajax({
type: "POST",url: "/Tech/TemplateTypeManage/GetData",success: function (data) {
if (data && data.length != 0) {
$.fn.zTree.init($("#tree"),data);
var treeObj = $.fn.zTree.getZTreeObj("tree");
var cookie = $.cookie("z_tree" + window.location);
if (cookie) {
z_tree = JSON2.parse(cookie);
for (var i = 0; i < z_tree.length; i++) {
var node = treeObj.getNodeByParam('id',z_tree[i])
treeObj.expandNode(node,false)
}
}
}
}
});
});//end $

function onExpand(event,treeNode) {
var cookie = $.cookie("z_tree" + window.location);
var z_tree = new Array();
if (cookie) {
z_tree = JSON2.parse(cookie);
}
if ($.inArray(treeNode.id,z_tree) < 0) {
z_tree.push(treeNode.id);
}
$.cookie("z_tree" + window.location,JSON2.stringify(z_tree))
}

function onCollapse(event,treeNode) {
var cookie = $.cookie("z_tree" + window.location);
var z_tree = new Array();
if (cookie) {
z_tree = JSON2.parse(cookie);
}
var index = $.inArray(treeNode.id,z_tree);
z_tree.splice(index,1);
for (var i = 0; i < treeNode.children.length; i++) {
index = $.inArray(treeNode.children[i].id,z_tree);
if (index > -1) z_tree.splice(index,1);
}
$.cookie("z_tree" + window.location,JSON2.stringify(z_tree))
}

更多关于ztree控件的内容，请参考专题插件ztree使用汇总》

以上就是关于树插件zTree异步加载、模糊搜索简单实例讲解，希望对大家的学习有所帮助。