treeview怎么加载节点（AmazeUi Tree树形结构 应用小结）

<link rel="stylesheet" href="assets/css/amazeui.tree.min.css">
 
  <ul class="am-tree" id="tree">
                   <!--以下第一个li标签如果设计没有子级结构，可以屏蔽-->
                    <li class="am-tree-branch am-hide" data-template="treebranch">
                        <li class="am-tree-branch-header">
                            <button class="am-tree-branch-name">
                                <span class="am-tree-icon am-tree-icon-folder"></span>
                                <span class="am-tree-label"></span>
                            </button>
                        </li>
                        <ul class="am-tree-branch-children"></ul>
                        <li class="am-tree-loader"><span class="am-icon-spin am-icon-spinner"></span></li>
                    </li>
                    <li class="am-tree-item am-hide" data-template="treeitem">
                        <button class="am-tree-item-name">
                            <span class="am-tree-icon am-tree-icon-item"></span>
                            <span class="am-tree-label"></span>
                        </button>
                    </li>
                </ul>
<script src="assets/js/amazeui.tree.min.js"></script>

/*****粗加工后台数据(给单条数据增加了id,和pid,type,title),如果后台数据返回的直接带有层级结构的数据直接跳过这个步骤)
 *  for(i=0;i<odata.length;i++){
                    if(odata[i].level>=2){
                        //data[i].frameMenuStr
                        //截取倒数后两个"."后边的字符串/
                        let arr =["a","b","c","d","e","f","g","h","i"];
                        let str = odata[i].frameMenuStr;//当前数据ID
                        odata[i].id= arr[odata[i].level-1]+str.substring(str.lastIndexOf(".")+1);
                        let j =str.lastIndexOf(".");//当前数据父节点ID
                        odata[i].pid= arr[odata[i].level-2]+str.substring(str.lastIndexOf(".",j-1),str.lastIndexOf("."));
                        odata[i].title = odata[i].menuName;
                        odata[i].type = 'item';
                    }else{
                       odata[i].id = "a"+odata[i].frameMenuStr;
                       odata[i].title = odata[i].menuName;
                       odata[i].type = 'folder';
                       //odata[i].pid = "00000000"; 
                   }
                }
 * ********/
 /*******
 * 
 * data:灌入的数据(后台返回的值要为有id和pid)
 * dom 所要绑定的区域id
 * callbackfun:回调函数
 * 范例：
function bindTree(data,dom,callbackfun){
    /************核心应用：数组操作******************/
    let tree = data;
    var treeMaps = {};
    tree.forEach(function (value, index) {
       treeMaps[value.id] = value;
    })
    var data = [];
    tree.forEach(function (value, index) {
        var parent = treeMaps[value.pid]
        if (parent !== undefined) {
            if (parent.products === undefined) {
            parent.products = []
            }
            parent.products.push(value)
        } else {
            data.push(value);
        }
    })
    /***************以上这段代码是二次加工数据为的让之前没有层级结构的数据，加工成有层级结构的数据结构********************/
    dom.tree({
        dataSource:function(options, callback) {
            // 模拟异步加载
            let num = 0;//通过num值操作区分(这是个坑一定要用这种方法，不能用data||options.products)
            if(num==0){
                setTimeout(function() {
                  callback({data: data});//初始显示最高级别数据
                   num++;
                }, 400);
               
            }else{
                setTimeout(function() {
                  callback({data: options.products});//点击节点显示的数据
                }, 400);
            }
          },
        multiSelect: false,
        cacheItems: true,
        folderSelect: false,
    });
    dom.on('selected.tree.amui', function (event, data) {
        // do something with data: { selected: [array], target: [object] }
        //  console.log(data);
        // console.log(event);
         uuid = data.target.menuId;
         resData = data.target;
         if(callbackfun || typeof callbackfun != 'undefined' || callbackfun != undefined){
            return callbackfun(uuid);
          }
    });
    dom.tree("discloseAll");//这个函数暂时不起作用。
 }
 
 /**直接调用函数*/
 bindTree(odata,$("#tree"),function(){console.log("-------")});
 
 备注：
 
    //dom.tree("destroy");//数据更新我调用这个函数。但是一旦调用，直接所有dom结构都没有了，所以你要向之前绑定数据的地方重新灌入dom结构。
     /***********插件结构重新绘制***************/
    //  let str = "";
    //  str+='<li class="am-tree-branch am-hide" data-template="treebranch">';
    //     str+='<li class="am-tree-branch-header">';
    //         str+='<button class="am-tree-branch-name">';
    //         str+='<span class="am-tree-icon am-tree-icon-folder"></span>';
    //         str+='<span class="am-tree-label"></span>';
    //         str+='</button>';
    //     str+='</li>';
    //     str+='<ul class="am-tree-branch-children"></ul>';
    //     str+='<li class="am-tree-loader"><span class="am-icon-spin am-icon-spinner"></span></li>';
    //  str+='</li>';
    //  str+='<li class="am-tree-item am-hide" data-template="treeitem">';
    //     str+='<button class="am-tree-item-name">';
    //     str+='<span class="am-tree-icon am-tree-icon-item"></span>';
    //     str+='<span class="am-tree-label"></span>';
    //     str+='</button>';
    //  str+='</li>';
    //  dom.append(str);