easyui tree 递归实现无限级树

dwr 返回的数据格式

var treeData =[
{"id":"1200000100","parentId":"0","text":"苏州报表中心","staffId":"1200001016","level":"1","state":"closed"},
{"id":"1200000345","parentId":"1200000100","text":"周期报表","staffId":"1200001016","level":"2","state":"closed"},
{"id":"1200001245","parentId":"1200000100","text":"报表模板","staffId":"1200001016","level":"2","state":"closed"},
{"id":"1200001487","parentId":"1200000345","text":"创电中心","staffId":"1200001016","level":"3","state":"closed"},
{"id":"1200001540","parentId":"1200001245","text":"报表测试","staffId":"1200001016","level":"3","state":"open","iconCls":"icon_P"},
{"id":"1200001266","parentId":"1200001245","text":"报表导入测试","staffId":"1200001016","level":"3","state":"open","iconCls":"icon_A"},
{"id":"1200002653","parentId":"1200001245","text":"编辑列表测试","staffId":"1200001016","level":"3","state":"open","iconCls":"icon_E"},
{"id":"1200001567","parentId":"1200001245","text":"冻结列表测试","staffId":"1200001016","level":"3","state":"open","iconCls":"icon_F"},
{"id":"1200001377","parentId":"1200000345","text":"业管中心","staffId":"1200001016","level":"3","state":"closed"},
{"id":"1200001370","parentId":"1200000345","text":"政企客户部","staffId":"1200001016","level":"3","state":"closed"},
{"id":"1200000845","parentId":"1200001245","text":"曲线图表测试","staffId":"1200001016","level":"3","state":"open","iconCls":"icon_C"},
{"id":"1200000965","parentId":"1200001245","text":"柱状图表测试","staffId":"1200001016","level":"3","state":"open","iconCls":"icon_H"},
{"id":"1200001005","parentId":"1200001245","text":"下拉树参数测试","staffId":"1200001016","level":"3","state":"open","iconCls":"icon_P"},
{"id":"1200000985","parentId":"1200001245","text":"异步树表测试","staffId":"1200001016","level":"3","state":"open","iconCls":"icon_S"},
{"id":"1200002996","parentId":"1200001487","text":"王二狗","staffId":"1200001016","level":"4","state":"closed"},
{"id":"1200002253","parentId":"1200001370","text":"政企渠道中心","staffId":"1200001016","level":"4","state":"closed"},
{"id":"1200000765","parentId":"1200001377","text":"钱红燕","staffId":"1200001016","level":"4","state":"closed"},
{"id":"1200002997","parentId":"1200002996","text":"王二狗-短信包统计","staffId":"1200001016","level":"5","state":"open","iconCls":"icon_P"},
{"id":"1200004180","parentId":"1200000765","text":"王xx-号簿欠费调整清单","staffId":"1200001016","level":"5","state":"open","iconCls":"icon_L"},
{"id":"1200001383","parentId":"1200002253","text":"王xx","staffId":"1200001016","level":"5","state":"closed"},
{"id":"1200001384","parentId":"1200001383","text":"王xx_招财宝每月统计数据","staffId":"1200001016","level":"6","state":"open","iconCls":"icon_L"}
]

 

//查询树节点
function doSearch(){
var treeTxt = $("#treeTxt").val();
//dwr 调用后台
conductRpt.getConductRptSch(treeTxt,staffId,function(treeData){
//获取根节点
var node = $('#myTree').tree('getRoot'); 

//获取根节点的子节点
var childData = $("#myTree").tree('getChildren',node.target);
//删除所有子节点
for(var i=0;i<childData.length;i++){
$("#myTree").tree('remove',childData[i].target);
}

//转换后台返回的结果集【List】 treeData 数组
var nodes = convert(treeData)

//追加子节点
$("#myTree").tree('append',{parent:(node ? node.target : null),data : nodes});


});

}


function convert(treeData){
var nodes = [];
// 得到顶层节点
for(var i=0; i<treeData.length;i++){
var row = treeData[i];
if (!exists(treeData, row.parentId)){
nodes.push({
id : row.id,
text : row.text,
iconCls : row.iconCls
});
}
}

var nodesArr = [];
for(var i=0; i<nodes.length;i++){
nodesArr.push(nodes[i]);
}

while(nodesArr.length){
var node = nodesArr.shift();    // 父节点 shift()方法用于把数组的第一个元素从其中删除,并返回第一个元素的值
// 得到子节点
for(var i=0; i<treeData.length;i++){
var row = treeData[i];
if(row.parentId==node.id){
var child ={
id: row.id, 
text: row.text, 
iconCls: row.iconCls
};
if(node.children){
node.children.push(child);
} else {
node.children = [child];
}
nodesArr.push(child);
}
}
}
return nodes;
}


function exists(treeData, parentId){
for(var i=0; i<treeData.length;i++){
if (treeData[i].id == parentId){
return true;
}
}
return false;  
}

 

原文：https://blog.csdn.net/snowvhaha/article/details/56675664?utm_source=copy