Javascript 循环对象数组，并根据键值对的匹配集进行筛选/排序/分组。

我有一些数据如下：

"players": [
    {
    "name": "Molla Wague",
    "position": "Centre-Back",
    "jerseyNumber": 13,
    "dateOfBirth": "1991-02-21",
    "nationality": "Mali",
    "contractUntil": "2018-06-30",
    "marketValue": null
    },
    {
    "name": "Heurelho Gomes",
    "position": "Keeper",
    "jerseyNumber": 1,
    "dateOfBirth": "1981-02-15",
    "nationality": "Brazil",
    "contractUntil": "2019-06-30",
    "marketValue": null
    },
    {
    "name": "Christian Kabasele",
    "position": "Centre-Back",
    "jerseyNumber": 27,
    "dateOfBirth": "1991-02-24",
    "nationality": "Belgium",
    "contractUntil": "2021-06-30",
    "marketValue": null
    },
    {
    "name": "José Holebas",
    "position": "Left-Back",
    "jerseyNumber": 25,
    "dateOfBirth": "1984-06-27",
    "nationality": "Greece",
    "contractUntil": "2020-06-30",
    "marketValue": null
    },
    {
    "name": "Daryl Janmaat",
    "position": "Right-Back",
    "jerseyNumber": 2,
    "dateOfBirth": "1989-07-22",
    "nationality": "Netherlands",
    "contractUntil": "2020-06-30",
    "marketValue": null
    },
    {
    "name": "Étienne Capoue",
    "position": "Defensive Midfield",
    "jerseyNumber": 29,
    "dateOfBirth": "1988-07-11",
    "nationality": "France",
    "contractUntil": "2019-06-30",
    "marketValue": null
    },
    {
    "name": "Tom Cleverley",
    "position": "Central Midfield",
    "jerseyNumber": 8,
    "dateOfBirth": "1989-08-12",
    "nationality": "England",
    "contractUntil": "2022-06-30",
    "marketValue": null
    },
    {
    "name": "Roberto Pereyra",
    "position": "Attacking Midfield",
    "jerseyNumber": 37,
    "dateOfBirth": "1991-01-07",
    "nationality": "Argentina",
    "contractUntil": "2021-06-30",
    "marketValue": null
    },
    {
    "name": "Troy Deeney",
    "position": "Centre-Forward",
    "jerseyNumber": 9,
    "dateOfBirth": "1988-06-29",
    "nationality": "England",
    "contractUntil": "2021-06-30",
    "marketValue": null
    }
]

有些玩家有不同的位置

我想根据每个球员的位置来排序，所以所有的守门员排在第一位，然后是所有的中后卫，依此类推

我正在使用React和Redux。我已经在我的Reducer文件中完成了一些工作，但我认为代码过于臃肿，下面是一个示例：

function sortPlayersByPosition(data) {
  let players = data.players;
  let result = [];

    result.push(players.filter(function(obj) {
      return obj.position === 'Keeper';
    }));

    result.push(players.filter(function(obj) {
      return obj.position === 'Centre-Back';
    }));

    result.push(players.filter(function(obj) {
      return obj.position === 'Right-Back';
    }));

    result.push(players.filter(function(obj) {
      return obj.position === 'Left-Back';
    }));

    result.push(players.filter(function(obj) {
      return obj.position === 'Defensive Midfield';
    }));

    result.push(players.filter(function(obj) {
      return obj.position === 'Central Midfield';
    }));

    result.push(players.filter(function(obj) {
      return obj.position === 'Attacking Midfield';
    }));

    result.push(players.filter(function(obj) {
      return obj.position === 'Right Wing';
    }));

    result.push(players.filter(function(obj) {
      return obj.position === 'Left Wing';
    }));

    result.push(players.filter(function(obj) {
      return obj.position === 'Centre-Forward';
    }));

    data.players = result;

    return data
}

export const fetchTeamPlayersReducer = (state = [], action) => {
  switch (action.type) {
    case 'FETCH_TEAM_PLAYERS_SUCCESS':

        var sortedPlayers = sortPlayersByPosition(action.payload);
      return sortedPlayers;
    default:
      return state;
  }
}

正如你们所看到的，我把我的位置分成了不同的数组。我不希望有这样的结果。如果我有一个有序的数组，我会非常喜欢它。就像原来的格式一样

欢迎任何帮助

谢谢

您可以尝试：

const positions = [
  'Keeper', 'Centre-Back', 'Right-Back', 'Left-Back', 'Defensive Midfield',
  'Central Midfield', 'Attacking Midfield', 'Right Wing', 'Left Wing', 'Centre-Forward',
];

data.players.sort((a, b) => positions.indexOf(a.position) > positions.indexOf(b.position));

输出：

[{
  "name": "Heurelho Gomes",
  "position": "Keeper",
  "jerseyNumber": 1,
  "dateOfBirth": "1981-02-15",
  "nationality": "Brazil",
  "contractUntil": "2019-06-30",
  "marketValue": null,
}, {
  "name": "Molla Wague",
  "position": "Centre-Back",
  "jerseyNumber": 13,
  "dateOfBirth": "1991-02-21",
  "nationality": "Mali",
  "contractUntil": "2018-06-30",
  "marketValue": null,
}, {
  "name": "Christian Kabasele",
  "position": "Centre-Back",
  "jerseyNumber": 27,
  "dateOfBirth": "1991-02-24",
  "nationality": "Belgium",
  "contractUntil": "2021-06-30",
  "marketValue": null,
}, {
  "name": "Daryl Janmaat",
  "position": "Right-Back",
  "jerseyNumber": 2,
  "dateOfBirth": "1989-07-22",
  "nationality": "Netherlands",
  "contractUntil": "2020-06-30",
  "marketValue": null,
}, {
  "name": "José Holebas",
  "position": "Left-Back",
  "jerseyNumber": 25,
  "dateOfBirth": "1984-06-27",
  "nationality": "Greece",
  "contractUntil": "2020-06-30",
  "marketValue": null,
}, {
  "name": "Étienne Capoue",
  "position": "Defensive Midfield",
  "jerseyNumber": 29,
  "dateOfBirth": "1988-07-11",
  "nationality": "France",
  "contractUntil": "2019-06-30",
  "marketValue": null,
}, {
  "name": "Tom Cleverley",
  "position": "Central Midfield",
  "jerseyNumber": 8,
  "dateOfBirth": "1989-08-12",
  "nationality": "England",
  "contractUntil": "2022-06-30",
  "marketValue": null,
}, {
  "name": "Roberto Pereyra",
  "position": "Attacking Midfield",
  "jerseyNumber": 37,
  "dateOfBirth": "1991-01-07",
  "nationality": "Argentina",
  "contractUntil": "2021-06-30",
  "marketValue": null,
}, {
  "name": "Troy Deeney",
  "position": "Centre-Forward",
  "jerseyNumber": 9,
  "dateOfBirth": "1988-06-29",
  "nationality": "England",
  "contractUntil": "2021-06-30",
  "marketValue": null,
}]

---

您可以首先创建有序位置的数组：

const ORDERS = [
  'Keeper',
  'Centre-Back',
  ...
]

并根据此ORDERS数组对初始数组进行排序

players.sort((player1, player2) => {
  return ORDERS.indexOf(player2.position) - ORDERS.indexOf(player1.position);
});

---

您可以定义包含排序优先级的对象，并定义自定义排序函数，如下所示：

玩家=[
{
“姓名”：“莫拉·瓦格”，
“位置”：“中后卫”，
“运动衫编号”：13，
“出生日期”：“1991-02-21”，
“国籍”：“马里”，
“合同期限”：“2018-06-30”，
“市场价值”：空
},
{
“姓名”：“Heurelho Gomes”，
“职位”：“守门员”，
“运动衫编号”：1，
“出生日期”：“1981-02-15”，
“国籍”：“巴西”，
“合同期限”：“2019-06-30”，
“市场价值”：空
},
{
“名称”：“克里斯蒂安·卡巴塞尔”，
“位置”：“中后卫”，
“运动衫编号”：27，
“出生日期”：“1991-02-24”，
“国籍”：“比利时”，
“合同期限至”：“2021-06-30”，
“市场价值”：空
},
{
“姓名”：“何塞·霍莱巴斯”，
“位置”：“左后卫”，
“运动衫编号”：25，
“出生日期”：“1984-06-27”，
“国籍”：“希腊”，
“合同期限”：“2020-06-30”，
“市场价值”：空
},
{
“姓名”：“Daryl Janmaat”，
“位置”：“右后卫”，
“运动衫编号”：2，
“出生日期”：“1989-07-22”，
“国籍”：“荷兰”，
“合同期限”：“2020-06-30”，
“市场价值”：空
},
{
“名称”：“Étienne Capoue”，
“位置”：“防守中场”，
“运动衫编号”：29，
“出生日期”：“1988-07-11”，
“国籍”：“法国”，
“合同期限”：“2019-06-30”，
“市场价值”：空
},
{
“姓名”：“Tom Cleverley”，
“位置”：“中央中场”，
“运动衫编号”：8，
“出生日期”：“1989-08-12”，
“国籍”：“英国”，
“合同终止日期”：“2022-06-30”，
“市场价值”：空
},
{
“姓名”：“罗伯托·佩雷拉”，
“位置”：“进攻型中场”，
“运动衫编号”：37，
“出生日期”：“1991-01-07”，
“国籍”：“阿根廷”，
“合同期限至”：“2021-06-30”，
“市场价值”：空
},
{
“姓名”：“特洛伊·迪尼”，
“位置”：“中锋”，
“运动衫编号”：9，
“出生日期”：“1988-06-29”，
“国籍”：“英国”，
“合同期限至”：“2021-06-30”，
“市场价值”：空
}
];
排序器={
“保管员”：0，
“中后卫”：1，
“中锋”：2，
“左后卫”：3，
“右后卫”：4，
“防守型中场”：5，
“中央中场”：6，
“进攻型中场”：7，
};
函数排序（player1、player2）{
常量player1Value=排序器[player1.位置]；
常量player2Value=sortOrder[player2.位置]；
如果（player1Value>player2Value）{return 1；}
else if（player1Value