如何找到历史价格数据对象数组每年的最小值和最大值

Question

2800: {Date: '2022-01-14', Open: 514.48999, High: 522.570007, Low: 511.269989, Close: 520.599976, …}
2801: {Date: '2022-01-18', Open: 510.390015, High: 519.390015, Low: 504.980011, Close: 513.340027, …}
2802: {Date: '2022-01-19', Open: 516.47998, High: 528.919983, Low: 515.299988, Close: 516.580017, …}
2803: {Date: '2022-01-20', Open: 522.380005, High: 532.030029, Low: 509.640015, Close: 510.850006, …}
2804: {Date: '2022-01-21', Open: 508.5, High: 513.859985, Low: 499.269989, Close: 499.910004, …}
2805: {Date: '2022-01-24', Open: 491.070007, High: 520.429993, Low: 483.309998, Close: 519.659973, …}
2806: {Date: '2022-01-25', Open: 505.51001, High: 514.26001, Low: 500.01001, Close: 502.720001, …}

我有以下跨越 10 多年的 ADBE 历史价格数据。我试图根据他们的报告日期（每年 11 月结束的期间）每年获取最小值和最大值。

我正在尝试获取数组中的输出： [2010 min price, 2011 min price, 2012 min price ...]

const startDate = new Date("2010-12-01");
const endDate = new Date("2022-04-30");
    
const data2 = data.filter(a => {
    const date = new Date(a.Date);
      return (date >= startDate && date <= endDate);
    });
console.log(data)

    
function findMinMax(key) {
    const datas = data2.map((node) => node[key]);
        return {
          min: Math.min(...datas),
          max: Math.max(...datas),
        }
}
const checkit = findMinMax('Close')

根据代码，我怎样才能做到这一点而不必为了获得最小最大值而更改每年的开始和结束日期？

Answer 1

查看下面的解决方案，它根据报告月份为所有字段计算 min/max。

const data = [
  { Date: "2022-01-14", Open: 100, High: 500, Low: 50, Close: 1000 },
  { Date: "2021-12-05", Open: 200, High: 150, Low: 150, Close: 2000 },
  { Date: "2021-10-21", Open: 300, High: 550, Low: 70, Close: 200 },
  { Date: "2021-02-18", Open: 250, High: 600, Low: 10, Close: 500 },
];

const START_REPORTING_MONTH = 11; // 11 for December

const output = data.reduce((res, { Date: date, ...rest }) => {
  const d = new Date(date);
  const year = d.getFullYear();
  const month = d.getMonth();
  let reportingPeriod;

  if (month >= START_REPORTING_MONTH) {
    reportingPeriod = `${year}-${year + 1}`;
  } else {
    reportingPeriod = `${year - 1}-${year}`;
  }

  if (!res[reportingPeriod]) {
    res[reportingPeriod] = { min: { ...rest }, max: { ...rest } };
  }

  Object.entries(rest).forEach(([k, v]) => {
    if (v < res[reportingPeriod].min[k]) {
      res[reportingPeriod].min[k] = v;
    }
    if (v > res[reportingPeriod].max[k]) {
      res[reportingPeriod].max[k] = v;
    }
  });

  return res;
}, {});

console.log(output);

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如何找到历史价格数据对象数组每年的最小值和最大值

How to find the min and max value for each year for an array of objects of historical price data

javascript

arrays

loops

date

minmax