javascript - 将对象转换为数组并按对象键对它们进行分组

Question

将对象转换为数组并按键对主题进行分组! (我不太确定标题是否正确，但这就是我需要的:

(需要检查当前键是否等于下一个键+1并且等于上一个键-1并且它们都具有相同的值!)

这样输入

{  
    "2019-07-17":{  
      "7":66,
      "8":66,
      "9":66,
      "11":70,
      "12":70,
      "16":70
   },
   "2019-07-18":{  
      "10":68,
      "11":68,
      "12":75,
      "14":75,
      "15":75,
      "18":70
   }
}

输出应该是这样的

{  
   "2019-07-17":[  
      {  
         "start":7,
         "end":9,
         "id":66
      },
      {  
         "start":11,
         "end":12,
         "id":70
      },
      {  
         "start":16,
         "end":17,
         "id":70
      }
   ],
   "2019-07-18":[  
      {  
         "start":10,
         "end":11,
         "id":68
      },
      {  
         "start":12,
         "end":13,
         "id":75
      },
      {  
         "start":14,
         "end":15,
         "id":75
      },
      {  
         "start":18,
         "end":19,
         "id":70
      }

   ]
}

Answer 1

您可以使用内部键和值对条目进行分组并获取新对象。

var data = { "2019-07-17": { 7: 66, 8: 66, 9: 66, 11: 70, 12: 70, 16: 70 }, "2019-07-18": { 10: 68, 11: 68, 12: 75, 14: 75, 15: 75, 18: 70 } },
    result = Object.fromEntries(Object.entries(data).map(([k, v]) => {
        var values = Object.entries(v).reduce((r, [l, id], i, { [i - 1]: last }) => {
            if (last && +last[0] + 1 === +l && last[1] === id) {
                r[r.length - 1].end = +l;
            } else {
                r.push({ start: +l, end: +l + 1, id });
            }
            return r;
        }, []);
        return [k, values];
    }));

console.log(result);

.as-console-wrapper { max-height: 100% !important; top: 0; }