前端项目实战贰拾壹-​react-admin+material ui数据处理reduce

var MainLevel = MainData.reduce((resData: any, item: any) => {
            resData = {
                ...resData,
                [item]: []
            }
            return resData
        }, {})

{
     "项目1": [
         {
             "id": "1",
             "title": "1-01",
             "detail": "明细1",
             "MainData": "项目1"
         }
     ],
     "项目2": [
         {
         },
         {
         }
     ],
     "项目3": [
         {
         }
     ]
 }