在具有相同值的json中查找键的总和

Question

所以我有一个包含板球比赛信息的数组。 我想显示一个团队在一场比赛中得分的totalRun，同时还显示了与其他团队相对的totalRun。

数组包含

module.exports.matchScore = [
    {
        "fk_matchID": 234017,
        "fk_teamID": 198708,
        "inning": 1,
        "isDeclare": 0,
        "isForfeited": 0,
        "isFollowOn": 0,
        "isAllOut": 0,
        "totalRun": 404,
        "totalWicket": 10
    },
    {
        "fk_matchID": 234017,
        "fk_teamID": 198752,
        "inning": 2,
        "isDeclare": 0,
        "isForfeited": 0,
        "isFollowOn": 0,
        "isAllOut": 0,
        "totalRun": 280,
        "totalWicket": 10
    },
    {
        "fk_matchID": 234017,
        "fk_teamID": 198708,
        "inning": 3,
        "isDeclare": 1,
        "isForfeited": 0,
        "isFollowOn": 0,
        "isAllOut": 0,
        "totalRun": 81,
        "totalWicket": 4
    },
    {
        "fk_matchID": 234017,
        "fk_teamID": 198752,
        "inning": 4,
        "isDeclare": 0,
        "isForfeited": 0,
        "isFollowOn": 0,
        "isAllOut": 0,
        "totalRun": 15,
        "totalWicket": 0
    },


let matchScore = require('./array');
let matchScoreData = matchScore.matchScore;


let forMatchDetail = matchScore.filter(function (matchScoreDetail) {
    return (matchScoreDetail.fk_matchID === matchScoreDetail.fk_matchID) && (matchScoreDetail.fk_teamID === matchScoreDetail.fk_teamID);
  });

  console.log(forMatchDetail);



let againstMatchDetail = matchScore.filter(function (matchScore) {
    return (matchScore.fk_matchID === matchScoreData.fk_matchID) && (matchScore.fk_teamID != matchScoreData.fk_teamID);
  });

  console.log(againstMatchDetail); 

所以我想从同一比赛中的不同局对象添加一个团队totalRun（相同的比赛ID）

因此，团队198708的总跑步次数将为485 404 + 81，而团队198752的得分将为295 280 + 15

因此，团队198708的得分为485，反对将为295，而小组198752的得分为295，反对将为485

我得到了你们给出的答案，但是我该如何将我的答案换成车队的totalRun，以便与run socred即

“ 198708”：295，“ 198752”：485，

在示例中，我在数组中也有一些相似的匹配项。 所以我需要在matchID中显示它。

Answer 1

您需要遍历数组并找到正确的团队ID，然后将团队ID插入具有分数的新对象中。 如果对象中已经有团队ID，则添加分数。 以下是为您准备的虚拟逻辑。

 var match_results = [ { "fk_matchID": 234017, "fk_teamID": 198708, "inning": 1, "isDeclare": 0, "isForfeited": 0, "isFollowOn": 0, "isAllOut": 0, "totalRun": 404, "totalWicket": 10 }, { "fk_matchID": 234017, "fk_teamID": 198752, "inning": 2, "isDeclare": 0, "isForfeited": 0, "isFollowOn": 0, "isAllOut": 0, "totalRun": 280, "totalWicket": 10 }, { "fk_matchID": 234017, "fk_teamID": 198708, "inning": 3, "isDeclare": 1, "isForfeited": 0, "isFollowOn": 0, "isAllOut": 0, "totalRun": 81, "totalWicket": 4 }, { "fk_matchID": 234017, "fk_teamID": 198752, "inning": 4, "isDeclare": 0, "isForfeited": 0, "isFollowOn": 0, "isAllOut": 0, "totalRun": 15, "totalWicket": 0 }]; var desired_result = {}; for (let i = 0; i< match_results.length; i++){ // console.log(match_results[i]); if(desired_result[match_results[i]["fk_teamID"]] == undefined){ desired_result[match_results[i]["fk_teamID"]] = match_results[i]["totalRun"]; }else{ desired_result[match_results[i]["fk_teamID"]] += match_results[i]["totalRun"]; } } console.log(desired_result); 

使用减少方法

 var match_results = [ { "fk_matchID": 234017, "fk_teamID": 198708, "inning": 1, "isDeclare": 0, "isForfeited": 0, "isFollowOn": 0, "isAllOut": 0, "totalRun": 404, "totalWicket": 10 }, { "fk_matchID": 234017, "fk_teamID": 198752, "inning": 2, "isDeclare": 0, "isForfeited": 0, "isFollowOn": 0, "isAllOut": 0, "totalRun": 280, "totalWicket": 10 }, { "fk_matchID": 234017, "fk_teamID": 198708, "inning": 3, "isDeclare": 1, "isForfeited": 0, "isFollowOn": 0, "isAllOut": 0, "totalRun": 81, "totalWicket": 4 }, { "fk_matchID": 234017, "fk_teamID": 198752, "inning": 4, "isDeclare": 0, "isForfeited": 0, "isFollowOn": 0, "isAllOut": 0, "totalRun": 15, "totalWicket": 0 }]; // using reduce function. var desired_result_2 = match_results.reduce(function(accu, value, currentIndex, array) { if(accu[value["fk_teamID"]] == undefined){ accu[value["fk_teamID"]] = value["totalRun"]; }else{ accu[value["fk_teamID"]] += value["totalRun"]; } return accu; },{}); console.log(desired_result_2); 

Answer 2

请尝试此代码并进行所需的更改

  var matchScore = [ { "fk_matchID": 234017, "fk_teamID": 198708, "inning": 1, "isDeclare": 0, "isForfeited": 0, "isFollowOn": 0, "isAllOut": 0, "totalRun": 404, "totalWicket": 10 }, { "fk_matchID": 234017, "fk_teamID": 198752, "inning": 2, "isDeclare": 0, "isForfeited": 0, "isFollowOn": 0, "isAllOut": 0, "totalRun": 280, "totalWicket": 10 }, { "fk_matchID": 234017, "fk_teamID": 198708, "inning": 3, "isDeclare": 1, "isForfeited": 0, "isFollowOn": 0, "isAllOut": 0, "totalRun": 81, "totalWicket": 4 }, { "fk_matchID": 234017, "fk_teamID": 198752, "inning": 4, "isDeclare": 0, "isForfeited": 0, "isFollowOn": 0, "isAllOut": 0, "totalRun": 15, "totalWicket": 0 } ]; var matchScoreCopy = matchScore; var jsonObj = []; var obj; var getJsonObject = function (matchScoreCopy) { if (matchScoreCopy.length === 0) { return -1; } else { var elementId = matchScoreCopy[0].fk_teamID; var totrun = 0; for(var i = 0; i < matchScoreCopy.length; i++) { var obj = matchScoreCopy[i]; if (obj.fk_teamID === elementId) { totrun += obj.totalRun; matchScoreCopy.splice(i, 1); if (matchScoreCopy.length === 1) { i--; } } } obj = { 'fk_teamID': elementId, 'totalRun': totrun } jsonObj.push(obj); getJsonObject(matchScoreCopy); } } getJsonObject(matchScoreCopy); console.log(jsonObj);