返回每个组属性值最高的数组中的对象

function getHighestObjectsByGroup(arr, groupAttribute) {
  const groups = arr.reduce((result, obj) => {
    const groupValue = obj[groupAttribute];
    if (!result[groupValue]) {
      result[groupValue] = [];
    }
    result[groupValue].push(obj);
    return result;
  }, {});

  const highestObjects = Object.values(groups).map(group => {
    return group.reduce((highest, obj) => {
      if (obj.value > highest.value) {
        return obj;
      }
      return highest;
    });
  });

  return highestObjects;
}

// 示例数据
const data = [
  { group: 'A', value: 10 },
  { group: 'A', value: 15 },
  { group: 'B', value: 5 },
  { group: 'B', value: 8 },
  { group: 'C', value: 20 },
  { group: 'C', value: 18 }
];

// 调用函数并输出结果
const result = getHighestObjectsByGroup(data, 'group');
console.log(result);