Javascript json 对象减少多个键？

如何解决Javascript json 对象减少多个键？

我正在开发一个应用程序，我是一名实习生，我需要按名称、权重和所有成绩加入这些 JSON 对象。我是为了名字和体重而做的，现在我们需要添加成绩，完全不知道甚至不知道谷歌什么......

这是函数，从 var holder = {} 下来的代码是旧算法，需要一个新的来加入多个键。

async function grade() {
  try {
    const data = await model.run_stock.findAll({
      offset: 0,limit: 200,include: [
        {
          model: model.truerun,attributes: { exclude: ["updatedAt","batchId","gradeListId"] },include: [
            {

              model: model.batch,attributes: [
                "id","name","age","quantity","source","hatchery",],include: [
                {
                  model: model.shellfish,attributes: ["id","type","species"],},{
              model: model.grade_list,"alias"],});

    let a = [];

    for (let i = 0; i <= data.length; i++) {
      if (!data[i]) {
        continue;
      }

      const { avgTotalWeight } = data[i];
      const { name } = data[i].truerun.batch.shellfish;
      const { alias } = data[i].truerun.grade_list;

      if (avgTotalWeight !== null) {

        let grade1,grade2,grade3 = 0;

        if (alias === "G1") {
          grade1 = avgTotalWeight;
        } else grade1 = 0;

        if (alias === "G2") {
          grade2 = avgTotalWeight;
        } else grade2 = 0;

        if (alias === "G3") {
          grade3 = avgTotalWeight;
        } else grade3 = 0;

        let b = {
          avgTotalWeight: avgTotalWeight,name: name,grade: {
            grade1: grade1,grade2: grade2,grade3: grade3
          }
        };
        a.push(b);
      }
    }

    var holder = {};

    a.forEach(function (d) {
      if (holder.hasOwnProperty(d.name)) {
        holder[d.name] = holder[d.name] + d.avgTotalWeight;
      } else {
        holder[d.name] = d.avgTotalWeight;
      }
    });

    var obj2 = [];

    for (var prop in holder) {
      obj2.push({ name: prop,weight: holder[prop] });
    }

    return a;
  } catch (err) {
    throw err;
  }
}

这是邮递员请求数据。

{
    "data": [
        {
            "avgTotalWeight": 16,"name": "france Naicin","grade": {
                "grade1": 16,"grade2": 0,"grade3": 0
            }
        },{
            "avgTotalWeight": 16,"name": "pacific gigas",{
            "avgTotalWeight": 13,"grade": {
                "grade1": 13,{
            "avgTotalWeight": 14,"grade": {
                "grade1": 14,{
            "avgTotalWeight": 15,"grade": {
                "grade1": 15,{
            "avgTotalWeight": 12,"grade": {
                "grade1": 12,{
            "avgTotalWeight": 11,"grade": {
                "grade1": 0,"grade2": 11,{
            "avgTotalWeight": 10,"grade": {
                "grade1": 10,{
            "avgTotalWeight": 9,"grade3": 9
            }
        }
    ]
}

最后应该是这样的：

{
   "name": "FranceNiance","total": 80,"grades": {
     "grade1": "30","grade2": "30","grade3": "20"
},....