zTree第三章，异步加载，前端

zTree异步加载

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具体详见API文档：

http://www.treejs.cn/v3/api.php 

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重点是：

setting里面的async相关属性

回调函数callBack里面的onAsyncSuccess : ztreeOnAsyncSuccess

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参考文章

https://blog.csdn.net/u010951692/article/details/51833077

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<div id="treeAdmin" class="ztree"></div>

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var setting = {
async : {
autoParam : [ "pId" , "floor" ],
enable : true,
type : "post",
url : SITE_PATH + "/resourcePush/getSonNodes",
dataFilter : filter,
},
showLine : true,
view : {
nameIsHTML : true,//允许注入html标签
},
check : {
enable : true,
chkStyle : "checkbox"
},
callback : {
onClick : zTreeOnClick,
onAsyncSuccess : ztreeOnAsyncSuccess
}
};

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 var treeObj = $.fn.zTree.init($("#treeAdmin"), setting);

注意没有nodes

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 一些图片资源

var file = __THEME__+"resourcesPush/js/ztree/img/diy/file.png", //单个文件
folder = __THEME__+"resourcesPush/js/ztree/img/diy/folder.png", //未展开文件夹
folderOpen = __THEME__+"resourcesPush/js/ztree/img/diy/folder_open.png";//展开文件夹

涉及两个属性

node.isParent;

node.open;

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function filter(){
return ;
}

function ztreeOnAsyncSuccess(event, treeId, treeNode){
var url = SITE_PATH + "/resourcePush/getSonNodes";
var parameter = {};

if(treeNode == undefined){
parameter.pId = "0";
parameter.floor = "0";
}
else{
parameter.pId = treeNode.id;
parameter.floor = treeNode.floor;
}
$.ajax({
type : "post",
url : url,
data : parameter,
dataType : "json",
async : true,
success : function(jsonData) {
if (jsonData != null) {
var data = jsonData;
if(data != null && data.length != 0){
//添加图标
data = getIcon(data);
if(treeNode == undefined){
treeObj.addNodes(null,data,true);// 如果是根节点，那么就在null后面加载数据
}
else{
treeObj.addNodes(treeNode,data,true);//如果是加载子节点，那么就是父节点下面加载
}
}
treeObj.expandNode(treeNode,true, false, false);// 将新获取的子节点展开
}
},
error : function() {
console.log("请求错误！");
}
});
};

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function getIcon(res){
if (res) {
res.forEach(function(data, index, arr) {
if (data) {
if (data.iconOpen == "folderOpen") {
data.iconOpen = folderOpen;
}
if (data.iconClose == "folder") {
data.iconClose = folder;
}
if (data.icon == "file") {
data.icon = file;
}
}
});
}
return res;
}

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