javascript - 将Json转换为父子关系结构

Question

想将 JSON 转换为父子关系。 Json 由 category 和 sub category 组成，匹配 Category 并将 subCategory 作为 child 插入其中

JSON

    [  {
         "id": 0,
         "category": "Business Services",
          "subCategory": "Printing Services",
         "isChecked": false
        },
       {
      "id": 1,
      "category": "Business Services",
      "subCategory": "Waste Management Service",
      "isChecked": false
       },
      {
      "id": 2,
      "category": "Consumer Products Manufacture - Food and Beverage",
      "subCategory": "Alcoholic beverages",
      "isChecked": false
    },
      {
       "id": 3,
       "category": "Consumer Products Manufacture - Food and Beverage",
       "subCategory": "Cakes and Pastries",
       "isChecked": false
     },
     {
      "id": 4,
      "category": "Finance",
      "subCategory": "Finance Software and Services",
      "isChecked": false
   },
    {
    "id": 5,
    "category": "Finance",
    "subCategory": "Insurance",
    "isChecked": false
    },
  ]

想要从我拥有的原始 json 中得到以下 json 形式

       {category: 'Business Service',
          [ {value:'Printing Service'},{value:'Waste Management 
       service'},..]
      }, 
       { category :'Consumer products manufacture -Food and Beverage',
            [{..}...]
       }

Answer 1

您可以尝试减少您的输入数组并像这样简单地对您的输出进行排序:

const input = [{
    "id": 0,
    "category": "Business Services",
    "subCategory": "Printing Services",
    "isChecked": false
  },
  {
    "id": 1,
    "category": "Business Services",
    "subCategory": "Waste Management Service",
    "isChecked": false
  },
  {
    "id": 2,
    "category": "Consumer Products Manufacture - Food and Beverage",
    "subCategory": "Alcoholic beverages",
    "isChecked": false
  },
  {
    "id": 3,
    "category": "Consumer Products Manufacture - Food and Beverage",
    "subCategory": "Cakes and Pastries",
    "isChecked": false
  },
  {
    "id": 4,
    "category": "Finance",
    "subCategory": "Finance Software and Services",
    "isChecked": false
  },
  {
    "id": 5,
    "category": "Finance",
    "subCategory": "Insurance",
    "isChecked": false
  },
]

const output = input.reduce((acc, cur) => {
  if (typeof acc[cur.category] == "undefined")
    acc[cur.category] = []
  acc[cur.category].push({
    value: cur.subCategory
  });
  return acc;
}, {})

console.log(output)