将多个对象与对象数组中的值之和合并，并在 javascript 中重新排列数组

Question

我有这样的数组：

[{"an": "0",
  "ap": "11",
  "status":"active"
  "zr":"55"},
 {"an": "0",
  "ap": "15",
  "status":"death"
  "zr":"55"},
 {"an": "0",
  "ap": "18",
  "status":"recovered"
  "zr":"54"},
 {"an": "0",
  "ap": "11",
  "status":"active"
  "zr":"55"},
 {"an": "0",
  "ap": "11",
  "status":"death"
  "zr":"55"},
 {"an": "0",
  "ap": "11",
  "status":"recovered"
  "zr":"55"},
  {"an": "0",
  "ap": "11",
  "status":"active"
  "zr":"55"},
 {"an": "0",
  "ap": "11",
  "status":"death"
  "zr":"55"},
  {"an": "0",
  "ap": "11",
  "status":"recovered"
  "zr":"55"} ]

我想修改这个数组，所以修改后的数组应该是这样的

[ {"state":"an","active":"0", "death":"0", "recovered":"0"},{"state":"ap","active":"33", "death":"36", "recovered":"40"},{"state":"zr","active":"165", "death":"165", "recovered":"165"}]

我试过根据状态groupby数据之类的方法

var arr={};
    var result=data.map(({status, ...item}) =>{
        Object.keys(item).map((keys)=>{
            arr.state=keys;
            arr[status]= arr[status] ? arr[status] +item[keys] : item[keys];
        });
        return arr;
    })
    console.log(arr);

谁能告诉我哪里出错了？我想要 javascript 中的通用代码，如果我要添加多个键，它也适用。提前谢谢你。

Answer 1

您可以按 status 分组，然后将其余对象作为值。

var data = [{ an: "0", ap: "11", status: "active", zr: "55" }, { an: "0", ap: "15", status: "death", zr: "55" }, { an: "0", ap: "18", status: "recovered", zr: "54" }, { an: "0", ap: "11", status: "active", zr: "55" }, { an: "0", ap: "11", status: "death", zr: "55" }, { an: "0", ap: "11", status: "recovered", zr: "55" }, { an: "0", ap: "11", status: "active", zr: "55" }, { an: "0", ap: "11", status: "death", zr: "55" }, { an: "0", ap: "11", status: "recovered", zr: "55" }],
    result = Object.values(data.reduce((r, { status, ...o }) => {
        Object.entries(o).forEach(([state, v]) => {
            r[state] = r[state] || { state };
            r[state][status] = ((+r[state][status] || 0) + +v).toString();
        });
        return r;
    }, {}));

console.log(result);

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将多个对象与对象数组中的值之和合并，并在 javascript 中重新排列数组

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