想把数组外层的selected和chlidren里面的这个属性都改为false，递归如何写

Question

 let newArr = [
            {
                name: "2020合集",
                selected: true,
                children: [
                    {
                        id: 1,
                        selected: true,
                        name: "夏",
                    },
                    {
                        id: 2,
                        selected: true,
                        name: "秋",
                    }
                ]
            }
        ]

Answer 1

 let newArr = [
            {
                name: "2020合集",
                selected: true,
                children: [
                    {
                        id: 1,
                        selected: true,
                        name: "夏",
                    },
                    {
                        id: 2,
                        selected: true,
                        name: "秋",
                    }
                ]
            }
        ]
       let c= this.loop(newArr, 'selected', false);
       console.log(newArr) 
loop = (data, key, val) => {
      data.map((item) => {
            item[key] = val;
            if (item.children && item.children.length > 0) {
                loop(item.children, key, val);
            }
        })
 }