如何实现目标差计算，以达到平局？

Question

我使用以下数据集

const data = [
  {
    team: {
      id: "1018",
      title: "Team 1",
      permalink: "http://localhost/app/teams/team-1/",
      logo: "http://localhost/app/wp-content/uploads/2020/08/team-1.png",
    },
    games_played: 1,
    won_games: 1,
    tide_games: 0,
    lost_games: 0,
    goals_for: 3,
    goals_against: 1,
    free_play_score: 1,
    points: 4,
  },
  {
    team: {
      id: "211",
      title: "Team 2",
      permalink: "http://localhost/app/teams/team-2/",
      logo: "http://localhost/app/wp-content/uploads/2020/08/team-2.png",
    },
    games_played: 2,
    won_games: 0,
    tide_games: 1,
    lost_games: 1,
    goals_for: 1,
    goals_against: 3,
    free_play_score: 1,
    points: 1,
  },
  {
    team: {
      id: "2098",
      title: "Team 3",
      permalink: "http://localhost/app/teams/team-3/",
      logo: "http://localhost/app/wp-content/uploads/2020/07/team-3.png",
    },
    games_played: 1,
    won_games: 0,
    tide_games: 1,
    lost_games: 0,
    goals_for: 0,
    goals_against: 0,
    free_play_score: 0,
    points: 0,
  },
  {
    team: {
      id: "196",
      title: "Team 4",
      permalink: "http://localhost/app/teams/team-4/",
      logo: "http://localhost/app/wp-content/uploads/2020/08/team-4.png",
    },
    games_played: 1,
    won_games: 0,
    tide_games: 1,
    lost_games: 0,
    goals_for: 1,
    goals_against: 1,
    free_play_score: 0,
    points: 1,
  },
  {
    team: {
      id: "250",
      title: "Team 5",
      permalink: "http://localhost/app/teams/team-5/",
      logo: "http://localhost/app/wp-content/uploads/2020/08/team-5.png",
    },
    games_played: 2,
    won_games: 2,
    tide_games: 0,
    lost_games: 0,
    goals_for: 4,
    goals_against: 3,
    free_play_score: 0,
    points: 2,
  },
  {
    team: {
      id: "147",
      title: "Team 6",
      permalink: "http://localhost/app/teams/team-6/",
      logo: "http://localhost/app/wp-content/uploads/2020/07/team-5.png",
    },
    games_played: 2,
    won_games: 2,
    tide_games: 0,
    lost_games: 0,
    goals_for: 5,
    goals_against: 1,
    free_play_score: 0,
    points: 2,
  },
];

我需要按点进行排序，这样以后我就可以打印排名了。

data.sort((a, b) => b.points - a.points);

但是我得到了两个平分场景，在有两点的团队和有一点的团队之间，我必须使用目标差对它们进行排序，

目标差异包括

球门差(或分差)计算为所有联赛进球数减去失球数或失分数。

在我的例子中，我首先考虑的是获得每支球队的不同目标，为此我尝试如下

const clone = data.concat().map((entry) => ({
  ...entry,
  team: { ...entry.team },
  goal_difference: entry.goals_for - entry.goals_against,
}));

goal_difference属性被添加到每个团队中，但是从现在开始我不知道如何进行，以达到没有平局的球队的位置是有序的和受尊重的。我很感激你的建议

**更新0 **

预期的产出应该是

const data = [
  {
    team: {
      id: "1018",
      title: "Team 1",
      permalink: "http://localhost/app/teams/team-1/",
      logo: "http://localhost/app/wp-content/uploads/2020/08/team-1.png",
    },
    games_played: 1,
    won_games: 1,
    tide_games: 0,
    lost_games: 0,
    goals_for: 3,
    goals_against: 1,
    free_play_score: 1,
    points: 4,
    goal_difference: 2,
  },
  {
    team: {
      id: "147",
      title: "Team 6",
      permalink: "http://localhost/app/teams/team-6/",
      logo: "http://localhost/app/wp-content/uploads/2020/07/team-5.png",
    },
    games_played: 2,
    won_games: 2,
    tide_games: 0,
    lost_games: 0,
    goals_for: 5,
    goals_against: 1,
    free_play_score: 0,
    points: 2,
    goal_difference: 4,
  },
  {
    team: {
      id: "250",
      title: "Team 5",
      permalink: "http://localhost/app/teams/team-5/",
      logo: "http://localhost/app/wp-content/uploads/2020/08/team-5.png",
    },
    games_played: 2,
    won_games: 2,
    tide_games: 0,
    lost_games: 0,
    goals_for: 4,
    goals_against: 3,
    free_play_score: 0,
    points: 2,
    goal_difference: 1,
  },
  {
    team: {
      id: "196",
      title: "Team 4",
      permalink: "http://localhost/app/teams/team-4/",
      logo: "http://localhost/app/wp-content/uploads/2020/08/team-4.png",
    },
    games_played: 1,
    won_games: 0,
    tide_games: 1,
    lost_games: 0,
    goals_for: 1,
    goals_against: 1,
    free_play_score: 0,
    points: 1,
    goal_difference: 0,
  },
  {
    team: {
      id: "211",
      title: "Team 2",
      permalink: "http://localhost/app/teams/team-2/",
      logo: "http://localhost/app/wp-content/uploads/2020/08/team-2.png",
    },
    games_played: 2,
    won_games: 0,
    tide_games: 1,
    lost_games: 1,
    goals_for: 1,
    goals_against: 3,
    free_play_score: 1,
    points: 1,
    goal_difference: -2,
  },
  {
    team: {
      id: "2098",
      title: "Team 3",
      permalink: "http://localhost/app/teams/team-3/",
      logo: "http://localhost/app/wp-content/uploads/2020/07/team-3.png",
    },
    games_played: 1,
    won_games: 0,
    tide_games: 1,
    lost_games: 0,
    goals_for: 0,
    goals_against: 0,
    free_play_score: 0,
    points: 0,
    goal_difference: 0,
  },
];

Answer 1

你只需要检测分数是相等的，然后对目标差进行排序。您可以在不添加对象的情况下内联完成此操作，如果您愿意的话：

data.sort((a, b) => b.points == a.points ? 
(b.goals_for - b.goals_against) - (a.goals_for - b.goals_against) : 
b.points - a.points );

Answer 2

您可以首先对数据进行map以向每个对象添加goals_difference属性，然后使用sort方法首先按点排序，然后在积分相等的情况下按目标差进行排序。

​

const data = [{"team":{"id":"1018","title":"Team 1","permalink":"http://localhost/app/teams/team-1/","logo":"http://localhost/app/wp-content/uploads/2020/08/team-1.png"},"games_played":1,"won_games":1,"tide_games":0,"lost_games":0,"goals_for":3,"goals_against":1,"free_play_score":1,"points":4},{"team":{"id":"211","title":"Team 2","permalink":"http://localhost/app/teams/team-2/","logo":"http://localhost/app/wp-content/uploads/2020/08/team-2.png"},"games_played":2,"won_games":0,"tide_games":1,"lost_games":1,"goals_for":1,"goals_against":3,"free_play_score":1,"points":1},{"team":{"id":"2098","title":"Team 3","permalink":"http://localhost/app/teams/team-3/","logo":"http://localhost/app/wp-content/uploads/2020/07/team-3.png"},"games_played":1,"won_games":0,"tide_games":1,"lost_games":0,"goals_for":0,"goals_against":0,"free_play_score":0,"points":0},{"team":{"id":"196","title":"Team 4","permalink":"http://localhost/app/teams/team-4/","logo":"http://localhost/app/wp-content/uploads/2020/08/team-4.png"},"games_played":1,"won_games":0,"tide_games":1,"lost_games":0,"goals_for":1,"goals_against":1,"free_play_score":0,"points":1},{"team":{"id":"250","title":"Team 5","permalink":"http://localhost/app/teams/team-5/","logo":"http://localhost/app/wp-content/uploads/2020/08/team-5.png"},"games_played":2,"won_games":2,"tide_games":0,"lost_games":0,"goals_for":4,"goals_against":3,"free_play_score":0,"points":2},{"team":{"id":"147","title":"Team 6","permalink":"http://localhost/app/teams/team-6/","logo":"http://localhost/app/wp-content/uploads/2020/07/team-5.png"},"games_played":2,"won_games":2,"tide_games":0,"lost_games":0,"goals_for":5,"goals_against":1,"free_play_score":0,"points":2}]

const result = data
  .map(({ goals_for: gf, goals_against: ga, ...rest }) => ({ ...rest, goal_difference: gf - ga}))
  .sort((a, b) => b.points - a.points || b.goal_difference - a.goal_difference)

console.log(result)

​

Answer 3

尝试：

​

const data = [
  {
    team: {
      id: "1018",
      title: "Team 1",
      permalink: "http://localhost/app/teams/team-1/",
      logo: "http://localhost/app/wp-content/uploads/2020/08/team-1.png",
    },
    games_played: 1,
    won_games: 1,
    tide_games: 0,
    lost_games: 0,
    goals_for: 3,
    goals_against: 1,
    free_play_score: 1,
    points: 4,
  },
  {
    team: {
      id: "211",
      title: "Team 2",
      permalink: "http://localhost/app/teams/team-2/",
      logo: "http://localhost/app/wp-content/uploads/2020/08/team-2.png",
    },
    games_played: 2,
    won_games: 0,
    tide_games: 1,
    lost_games: 1,
    goals_for: 1,
    goals_against: 3,
    free_play_score: 1,
    points: 1,
  },
  {
    team: {
      id: "2098",
      title: "Team 3",
      permalink: "http://localhost/app/teams/team-3/",
      logo: "http://localhost/app/wp-content/uploads/2020/07/team-3.png",
    },
    games_played: 1,
    won_games: 0,
    tide_games: 1,
    lost_games: 0,
    goals_for: 0,
    goals_against: 0,
    free_play_score: 0,
    points: 0,
  },
  {
    team: {
      id: "196",
      title: "Team 4",
      permalink: "http://localhost/app/teams/team-4/",
      logo: "http://localhost/app/wp-content/uploads/2020/08/team-4.png",
    },
    games_played: 1,
    won_games: 0,
    tide_games: 1,
    lost_games: 0,
    goals_for: 1,
    goals_against: 1,
    free_play_score: 0,
    points: 1,
  },
  {
    team: {
      id: "250",
      title: "Team 5",
      permalink: "http://localhost/app/teams/team-5/",
      logo: "http://localhost/app/wp-content/uploads/2020/08/team-5.png",
    },
    games_played: 1,
    won_games: 1,
    tide_games: 0,
    lost_games: 0,
    goals_for: 4,
    goals_against: 3,
    free_play_score: 0,
    points: 1,
  },
  {
    team: {
      id: "147",
      title: "Team 6",
      permalink: "http://localhost/app/teams/team-6/",
      logo: "http://localhost/app/wp-content/uploads/2020/07/team-5.png",
    },
    games_played: 1,
    won_games: 1,
    tide_games: 0,
    lost_games: 0,
    goals_for: 5,
    goals_against: 1,
    free_play_score: 0,
    points: 1,
  },
];


function sortArray(a, b) {
    var aPoints = a.points;
    var bPoints = b.points;
  var aDifference = a.goals_for - a.goals_against;
  var bDifference = b.goals_for - b.goals_against;
  
    var r;
  if (aPoints < bPoints) {
    r = 1;
  } else if (aPoints > bPoints) {
    r = -1;
  } else {
    if (aDifference < bDifference) {
      r = 1;
    } else if (aDifference > bDifference) {
      r = -1;
    } else {
      r = 0;
    }
  }
    return r;
}


data.sort(sortArray);

console.log(data);

​

这是一种自定义排序，它执行一个正常的降序排序(即，得分最多的球队首先进行排序)，但在得分匹配的地方，它会检查目标的差异并对其进行排序。