数据结构

    1. arr: [
    2.         { id: 1, icon: "user", name: "张安", hidden: true },
    3.         {
    4.           id: 2,
    5.           icon: null,
    6.           name: "张三",
    7.           hidden: false,
    8.           children: [
    9.             {
    10.               id: 4,
    11.               name: "张三2",
    12.               icon: "",
    13.               type: 0,
    14.               level: 1,
    15.             },
    16.             {
    17.               id: 5,
    18.               name: "张三3",
    19.               icon: "",
    20.               type: 0,
    21.               level: 2,
    22.             },
    23.           ],
    24.         },
    25.       ],

    js代码

    1. let newarr = [];
    2.     this.arr.forEach((v, index) => {
    3.       newarr.push({
    4.         index: v.index,
    5.         name: v.name,
    6.       });
    7.       if (v.children && v.children.length > 0) {
    8.         let dd = [];
    9.         v.children.forEach((item) => {
    10.           dd.push({
    11.             index: item.id,
    12.             name: item.name,
    13.           });
    14.         });
    15.         newarr[index].children = dd;
    16.       }
    17.     });

    运行结果
    image.png