easyui tree 遞歸實現無限級樹

dwr 返回的數據格式

var treeData =[
{"id":"1200000100","parentId":"0","text":"蘇州報表中心","staffId":"1200001016","level":"1","state":"closed"},
{"id":"1200000345","parentId":"1200000100","text":"周期報表","staffId":"1200001016","level":"2","state":"closed"},
{"id":"1200001245","parentId":"1200000100","text":"報表模板","staffId":"1200001016","level":"2","state":"closed"},
{"id":"1200001487","parentId":"1200000345","text":"創電中心","staffId":"1200001016","level":"3","state":"closed"},
{"id":"1200001540","parentId":"1200001245","text":"報表測試","staffId":"1200001016","level":"3","state":"open","iconCls":"icon_P"},
{"id":"1200001266","parentId":"1200001245","text":"報表導入測試","staffId":"1200001016","level":"3","state":"open","iconCls":"icon_A"},
{"id":"1200002653","parentId":"1200001245","text":"編輯列表測試","staffId":"1200001016","level":"3","state":"open","iconCls":"icon_E"},
{"id":"1200001567","parentId":"1200001245","text":"凍結列表測試","staffId":"1200001016","level":"3","state":"open","iconCls":"icon_F"},
{"id":"1200001377","parentId":"1200000345","text":"業管中心","staffId":"1200001016","level":"3","state":"closed"},
{"id":"1200001370","parentId":"1200000345","text":"政企客戶部","staffId":"1200001016","level":"3","state":"closed"},
{"id":"1200000845","parentId":"1200001245","text":"曲線圖表測試","staffId":"1200001016","level":"3","state":"open","iconCls":"icon_C"},
{"id":"1200000965","parentId":"1200001245","text":"柱狀圖表測試","staffId":"1200001016","level":"3","state":"open","iconCls":"icon_H"},
{"id":"1200001005","parentId":"1200001245","text":"下拉樹參數測試","staffId":"1200001016","level":"3","state":"open","iconCls":"icon_P"},
{"id":"1200000985","parentId":"1200001245","text":"異步樹表測試","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":"錢紅燕","staffId":"1200001016","level":"4","state":"closed"},
{"id":"1200002997","parentId":"1200002996","text":"王二狗-短信包統計","staffId":"1200001016","level":"5","state":"open","iconCls":"icon_P"},
{"id":"1200004180","parentId":"1200000765","text":"王xx-號簿欠費調整清單","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_招財寶每月統計數據","staffId":"1200001016","level":"6","state":"open","iconCls":"icon_L"}
]

 

//查詢樹節點
function doSearch(){
var treeTxt = $("#treeTxt").val();
//dwr 調用后台
conductRpt.getConductRptSch(treeTxt,staffId,function(treeData){
//獲取根節點
var node = $('#myTree').tree('getRoot'); 

//獲取根節點的子節點
var childData = $("#myTree").tree('getChildren',node.target);
//刪除所有子節點
for(var i=0;i<childData.length;i++){
$("#myTree").tree('remove',childData[i].target);
}

//轉換后台返回的結果集【List】 treeData 數組
var nodes = convert(treeData)

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


});

}


function convert(treeData){
var nodes = [];
// 得到頂層節點
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();    // 父節點 shift()方法用於把數組的第一個元素從其中刪除,並返回第一個元素的值
// 得到子節點
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