如何使用lodash返回具有最大键：值的嵌套对象？

Question

我的对象如下：

players: {
  p1: {
    name: joe,
    points: 25
  },
  p2: {
    name: frank,
    points: 35
  },
  p3: {
    name: tim,
    points: 55
  }
}

如何返回具有最高“点数”值的玩家对象？例如：

{ name: tim, points: 55 }

Answer 1

使用JavaScript Array#reduce方法。

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var data = {
  players: {
    p1: {
      name: 'joe',
      points: 25
    },
    p2: {
      name: ' frank',
      points: 35
    },
    p3: {
      name: 'tim',
      points: 55
    }
  }
};

var res = data.players[
  // get all property names
  Object.keys(data.players)
  // get the property name which holds the hghest point
  .reduce(function(a, b) {
    // compare and get the property which holds the highest
    return data.players[a].points < data.players[b].points ? b : a;
  })
];

console.log(res);

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Answer 2

使用_.maxBy

_.chain(players)
     .values()
     .maxBy('points')
     .value();

Answer 3

const data = {p1: {name: 'hello', points: 1}, p2: {name: 'world', points: 2}}
const dataList = _.values(data)
const maxPointItem = dataList.reduce((prev, curr) => prev.points < curr.points ? curr : prev), dataList[0])