把上面的数据格式改成下面这种格式的，给二级的每个对象里面加三个属性

Question

baseGrowthTreeDTOList: [
        {
          nodeId: '87792989543447310672893548139712',
          nodeName: '一年级',
          childTreeList: [
            {
              nodeId: '87956107174299611063652915548692',
              nodeName: '一年级1班',
            },
            {
              nodeId: '87956107185871011064476605111923',
              nodeName: '一年级2班',
            },
          ],
        },
        {
          nodeId: '87793284944518910674821521775005',
          nodeName: '二年级',
          childTreeList: [
            {
              nodeId: '87956575445844911065467284430780',
              nodeName: '二年级1班',
            },
            {
              nodeId: '87956575457900911066295625034240',
              nodeName: '二年级2班',
            },
          ],
        },
      ],

把上面的数据格式改成下面这种格式的，给二级的每个对象里面加三个属性

```javascript

baseGrowthTreeDTOList: [
        {
          nodeId: '87792989543447310672893548139712',
          nodeName: '一年级',
          childTreeList: [
            {
              nodeId: '87956107174299611063652915548692',
              nodeName: '一年级1班',
              show: false,
              value: '',
              result: [],
            },
            {
              nodeId: '87956107185871011064476605111923',
              nodeName: '一年级2班',
              show: false,
              value: '',
              result: [],
            },
          ],
        },
        {
          nodeId: '87793284944518910674821521775005',
          nodeName: '二年级',
          childTreeList: [
            {
              nodeId: '87956575445844911065467284430780',
              nodeName: '二年级1班',
              show: false,
              value: '',
              result: [],
            },
            {
              nodeId: '87956575457900911066295625034240',
              nodeName: '二年级2班',
              show: false,
              value: '',
              result: [],
            },
          ],
        },
      ],

```

Answer 1

该回答引用GPTᴼᴾᴱᴺᴬᴵ
可以使用数组的 forEach 方法和对象的解构来遍历并添加属性，可以按照如下方式实现：

const data = {
  baseGrowthTreeDTOList: [
    {
      nodeId: '87792989543447310672893548139712',
      nodeName: '一年级',
      childTreeList: [
        {
          nodeId: '87956107174299611063652915548692',
          nodeName: '一年级1班',
        },
        {
          nodeId: '87956107185871011064476605111923',
          nodeName: '一年级2班',
        },
      ],
    },
    {
      nodeId: '87793284944518910674821521775005',
      nodeName: '二年级',
      childTreeList: [
        {
          nodeId: '87956575445844911065467284430780',
          nodeName: '二年级1班',
        },
        {
          nodeId: '87956575457900911066295625034240',
          nodeName: '二年级2班',
        },
      ],
    },
  ],
};

data.baseGrowthTreeDTOList.forEach((item) => {
  item.childTreeList.forEach((childItem) => {
    // 给每个二级对象添加三个属性
    childItem.show = false;
    childItem.value = '';
    childItem.result = [];
  });
});

console.log(data);

输出结果如下：

{
  baseGrowthTreeDTOList: [
    {
      nodeId: '87792989543447310672893548139712',
      nodeName: '一年级',
      childTreeList: [
        {
          nodeId: '87956107174299611063652915548692',
          nodeName: '一年级1班',
          show: false,
          value: '',
          result: []
        },
        {
          nodeId: '87956107185871011064476605111923',
          nodeName: '一年级2班',
          show: false,
          value: '',
          result: []
        }
      ]
    },
    {
      nodeId: '87793284944518910674821521775005',
      nodeName: '二年级',
      childTreeList: [
        {
          nodeId: '87956575445844911065467284430780',
          nodeName: '二年级1班',
          show: false,
          value: '',
          result: []
        },
        {
          nodeId: '87956575457900911066295625034240',
          nodeName: '二年级2班',
          show: false,
          value: '',
          result: []
        }
      ]
    }
  ]
}