Javascript 如何将月数转换为月数和年数？

如果我有X个月，使用Javascript，我如何将该数字转换为X年和X个月？

对于某些数字X和某些除数y，计算除法div和余数rem为：

因此，在您的示例中：

var years = Math.floor(months/12);
var months = months % 12;

试试这个：

月=14 console.log 月/12 | 0+年和+月%12+月

---

你可以使用一个强调单数和复数的函数

函数getWordsmonthCount{ 函数getPluralnumber，word{ 返回号码===1&&word.one | | word.other； } var months={1:'month'，其他：'months'}， 年份={1:'年'，其他：'年'}， m=月数%12， y=Math.floormonthCount/12， 结果=[]； y&&result.pushy+“”+getPluraly，年； m&&result.pushm+''+getPluralm，月； 返回结果。加入'and'； } var i； 对于i=0；i<30；i++{ console.loggetWordsi； } 使用此功能

function months2years(months) {
var dur1 = Math.floor(months/12)
var dur2 = (months/12)-dur1
var dur3 = Math.floor(dur2*12)
return dur1+" years and "+dur3+" months"
} 

---

要获得年份和月份，您只需使用此功能：-

<script type="text/javascript">
    function years_months(month) 
    {
        if(month==12) {
            var y1 = 1 + " Year";
            return y1;
        } else {
            var y=(month/12);
            var mm=(month%12);
            var ym = y + "Years"+" " + mm + "Months";
            return ym;
        }
    }
</script>

---

您可以根据需要对此进行改进。这只是一个想法，您可以如何获得解决方案。

使用此函数，它通过Jest单元测试进行测试

function durationFormatter(monthsCount) {
  const years = Math.floor(monthsCount / 12);
  let yearsDur = years > 0 ? `${years} year` : '';
  yearsDur = years > 1 ? `${yearsDur}s` : yearsDur;

  const restMonths = monthsCount - years * 12;
  let monthsDur = restMonths > 0 ? `${restMonths} month` : '';
  monthsDur = restMonths > 1 ? `${monthsDur}s` : monthsDur;

  const and = years > 0 && restMonths > 0 ? ', and ' : '';

  return `${yearsDur}${and}${monthsDur}`;
}

测试套件

describe('Duration formatter', () => {
  test('formate 12 months duration to 1 year', () => {
    const formatedDuration = durationFormatter(12);
    const expected = '1 year';
    expect(formatedDuration).toBe(expected);
  });

  test('formate 24 months duration to 2 years', () => {
    const formatedDuration = durationFormatter(24);
    const expected = '2 years';
    expect(formatedDuration).toBe(expected);
  });

  test('formate 6 months duration to 6 months', () => {
    const formatedDuration = durationFormatter(6);
    const expected = '6 months';
    expect(formatedDuration).toBe(expected);
  });

  test('formate 1 month duration to 1 month', () => {
    const formatedDuration = durationFormatter(1);
    const expected = '1 month';
    expect(formatedDuration).toBe(expected);
  });

  test('formate 13 months duration to 1 year and 1 month', () => {
    const formatedDuration = durationFormatter(13);
    const expected = '1 year, and 1 month';
    expect(formatedDuration).toBe(expected);
  });

  test('formate 14 months duration to 1 year and 2 months', () => {
    const formatedDuration = durationFormatter(14);
    const expected = '1 year, and 2 months';
    expect(formatedDuration).toBe(expected);
  });

  test('formate 25 months duration to 2 years and 1 month', () => {
    const formatedDuration = durationFormatter(25);
    const expected = '2 years, and 1 month';
    expect(formatedDuration).toBe(expected);
  });

  test('formate 26 months duration to 2 years and 2 months', () => {
    const formatedDuration = durationFormatter(26);
    const expected = '2 years, and 2 months';
    expect(formatedDuration).toBe(expected);
  });
});

---

风险值x=14，月=x%12，年=x-月/12；-我会让你做的字符串工作干净，简单，做的工作完美。谢谢虽然这个代码片段可能是解决方案，但它确实有助于提高文章的质量。请记住，您将在将来回答读者的问题，这些人可能不知道您的代码建议的原因。

describe('Duration formatter', () => {
  test('formate 12 months duration to 1 year', () => {
    const formatedDuration = durationFormatter(12);
    const expected = '1 year';
    expect(formatedDuration).toBe(expected);
  });

  test('formate 24 months duration to 2 years', () => {
    const formatedDuration = durationFormatter(24);
    const expected = '2 years';
    expect(formatedDuration).toBe(expected);
  });

  test('formate 6 months duration to 6 months', () => {
    const formatedDuration = durationFormatter(6);
    const expected = '6 months';
    expect(formatedDuration).toBe(expected);
  });

  test('formate 1 month duration to 1 month', () => {
    const formatedDuration = durationFormatter(1);
    const expected = '1 month';
    expect(formatedDuration).toBe(expected);
  });

  test('formate 13 months duration to 1 year and 1 month', () => {
    const formatedDuration = durationFormatter(13);
    const expected = '1 year, and 1 month';
    expect(formatedDuration).toBe(expected);
  });

  test('formate 14 months duration to 1 year and 2 months', () => {
    const formatedDuration = durationFormatter(14);
    const expected = '1 year, and 2 months';
    expect(formatedDuration).toBe(expected);
  });

  test('formate 25 months duration to 2 years and 1 month', () => {
    const formatedDuration = durationFormatter(25);
    const expected = '2 years, and 1 month';
    expect(formatedDuration).toBe(expected);
  });

  test('formate 26 months duration to 2 years and 2 months', () => {
    const formatedDuration = durationFormatter(26);
    const expected = '2 years, and 2 months';
    expect(formatedDuration).toBe(expected);
  });
});

var dur1 = Math.floor(months/12);
var dur3 = months - (dur1*12);