js 递归遍历对象 插入属性 遍历树结构

  // 向 info下面 每一项 插入 isShow
   test() {
       const _this = this;
       _this.info.isShow = false;
       let iteration = function(arr) {
         let newArr = [];
         if (arr != undefined && arr.length > 0) {
           newArr = arr.map(item => {
             item.isShow = false;
             if (item.children != undefined && item.children.length > 0) {
               iteration(item.children);
             }
             return item;
           });
         }
         return newArr;
       };
       _this.info.children = iteration(_this.info.children);
     },

 // 封装  点击得每个结点的id   和该结点的位置
 extendKey(json, nodeId, bol) {
       var arr = json.map(item => {
         if (item.id == nodeId) {
           item.isShow = bol;
         } else if (item.mate && item.mate.id == nodeId) {
           item.isShow = bol;
         } else {
           if (item.children) {
             this.extendKey(item.children, nodeId, bol);
           }
         }
         return item;
       });
       return arr;
     },