vuejs处理树状结构的数据扁平化

1，有这样一个数据：

data = [
        {
            "id":1,
            "name":"吃喝",
            "parentId":0,
            "children":[
                {
                    "id":2,
                    "name":"烧烤",
                    "parentId":"1",
                    "children":[]
                },
                {
                    "id":5,
                    "name":"奶茶",
                    "parentId":"1",
                    "children":[]
                }
            ]
        },
        {
            "id":3,
            "name":"玩乐",
            "parentId":0,
            "children":[
                {
                    "id":4,
                    "name":"ktv",
                    "parentId":"3",
                    "children":[]
                },
                {
                    "id":6,
                    "name":"棋牌室",
                    "parentId":"3",
                    "children":[]
                }
            ]
        }
    ]

2，使用函数进行数据扁平化

 1  /**
 2     *
 3     * @param {Array} arrs 树形数据
 4     * @param {string} childs 树形数据子数据的属性名,常用'children'
 5     * @param {Array} attrArr 需要提取的公共属性数组(默认是除了childs的全部属性)（可不写）
 6     * @returns
 7     */
 8    function extractTree(arrs,childs,attrArr){
 9        let attrList = [];
10        if(!Array.isArray(arrs)&&!arrs.length)return [];
11        if(typeof childs !== 'string')return [];
12        if(!Array.isArray(attrArr)||Array.isArray(attrArr)&&!attrArr.length) {
13               attrList = Object.keys(arrs[0]);
14               attrList.splice(attrList.indexOf(childs), 1);
15          }else{
16               attrList = attrArr;
17          }
18         let list = [];
19         const getObj = (arr)=>{
20            arr.forEach(function(row){
21                let obj = {};
22                attrList.forEach(item=>{
23                   obj[item] = row[item];
24         });
25          list.push(obj);
26          if(row[childs]){
27              getObj(row[childs]);
28          }
29         })
30         return list;
31       }
32      return getObj(arrs);
33   }