Home > Article > Web Front-end > jquery zTree异步加载、模糊搜索简单实例分享_jquery
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：
后台代码（后台返回Json数据）：
public void SelStudent()
{
set("getStudentsJsonUrl", to(GetStudentsJson));
}
public void GetStudentsJson()
{
List> dicList = new List>();
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 dic = new Dictionary();
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 dic = new Dictionary();
dic.Add("id", "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：
2、JS代码：
$(function () {
//ztree设置
var setting = {
data: {
simpleData: {
enable: true,
idKey: "id",
pIdKey: "pId",
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"), setting, 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, true, false)
}
}
}
}
});
});//end $
function onExpand(event, treeId, 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, treeId, 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))
}
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。