JavaScript 中两个日期的年、月、日之间的差异
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【中文标题】JavaScript 中两个日期的年、月、日之间的差异【英文标题】:Difference between two dates in years, months, days in JavaScript 【发布时间】:2013-07-17 23:03:03 【问题描述】:我现在已经搜索了 4 个小时,但还没有找到一个解决方案来获取 javascript 中两个日期的年、月和日之间的差异,例如:2010 年 4 月 10 日是 3 年,x 月和 y几天前。
有很多解决方案,但它们仅提供天、月或年格式的差异,或者它们不正确(意味着不考虑一个月或闰年的实际天数等) .真的那么难做到吗?
我看过了:
http://momentjs.com/ -> 只能输出年、月或日的差异 http://www.javascriptkit.com/javatutors/datedifference.shtml http://www.javascriptkit.com/jsref/date.shtml http://timeago.yarp.com/ www.***.com -> 搜索功能在 php 中这很容易,但不幸的是我只能在该项目上使用客户端脚本。任何可以做到这一点的库或框架也可以。
以下是日期差异的预期输出列表:
//Expected output should be: "1 year, 5 months".
diffDate(new Date('2014-05-10'), new Date('2015-10-10'));
//Expected output should be: "1 year, 4 months, 29 days".
diffDate(new Date('2014-05-10'), new Date('2015-10-09'));
//Expected output should be: "1 year, 3 months, 30 days".
diffDate(new Date('2014-05-10'), new Date('2015-09-09'));
//Expected output should be: "9 months, 27 days".
diffDate(new Date('2014-05-10'), new Date('2015-03-09'));
//Expected output should be: "1 year, 9 months, 28 days".
diffDate(new Date('2014-05-10'), new Date('2016-03-09'));
//Expected output should be: "1 year, 10 months, 1 days".
diffDate(new Date('2014-05-10'), new Date('2016-03-11'));
【问题讨论】:
【参考方案1】:您需要精确到什么程度?如果您确实需要考虑普通年和闰年,以及月份之间天数的确切差异,那么您将不得不编写更高级的东西,但对于基本和粗略的计算,这应该可以解决问题:
today = new Date()
past = new Date(2010,05,01) // remember this is equivalent to 06 01 2010
//dates in js are counted from 0, so 05 is june
function calcDate(date1,date2)
var diff = Math.floor(date1.getTime() - date2.getTime());
var day = 1000 * 60 * 60 * 24;
var days = Math.floor(diff/day);
var months = Math.floor(days/31);
var years = Math.floor(months/12);
var message = date2.toDateString();
message += " was "
message += days + " days "
message += months + " months "
message += years + " years ago \n"
return message
a = calcDate(today,past)
console.log(a) // returns Tue Jun 01 2010 was 1143 days 36 months 3 years ago
请记住,这是不精确的,为了完全精确地计算日期,必须有一个日历并知道一年是否是闰年,这也是我计算月数的方式只是近似值。
但您可以轻松改进它。
【讨论】:
感谢您的回答。这很棒,但恐怕正是我所说的我不是在寻找的东西。如前所述,您所写的是简单的部分 - 考虑到一个月中的确切天数,闰年,......这是困难的事情。 感谢您的回答。但我稍微修改了一下,下面给出了链接:jsfiddle.net/PUSQU/8 这是一个很好的答案,但我很惊讶没有人考虑到这是关闭的一些......因为月份和年份的数学将基于一年,其中有 372 天 【参考方案2】:其实有一个moment.js插件的解决方案,很简单。
你可以使用moment.js
不要重新发明***。
只需插入Moment.js Date Range Plugin。
示例:
var starts = moment('2014-02-03 12:53:12');
var ends = moment();
var duration = moment.duration(ends.diff(starts));
// with ###moment precise date range plugin###
// it will tell you the difference in human terms
var diff = moment.preciseDiff(starts, ends, true);
// example: "years": 2, "months": 7, "days": 0, "hours": 6, "minutes": 29, "seconds": 17, "firstDateWasLater": false
// or as string:
var diffHuman = moment.preciseDiff(starts, ends);
// example: 2 years 7 months 6 hours 29 minutes 17 seconds
document.getElementById('output1').innerHTML = JSON.stringify(diff)
document.getElementById('output2').innerHTML = diffHuman
<html>
<head>
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.14.1/moment.min.js"></script>
<script src="https://raw.githubusercontent.com/codebox/moment-precise-range/master/moment-precise-range.js"></script>
</head>
<body>
<h2>Difference between "NOW and 2014-02-03 12:53:12"</h2>
<span id="output1"></span>
<br />
<span id="output2"></span>
</body>
</html>
【讨论】:
当你只需要一个 2 行函数时,你将支付超过 100k 的巨额罚款 缩小版只有51KB。 ~20KB 如果服务器托管启用了 gzip 压缩(cloudflare 托管)。更不用说浏览器可能已经从您访问过的另一个使用相同 CDN 引用的站点缓存了。考虑到这个库如何处理日期方面的许多其他有用的东西,考虑到 JavaScript 中处理日期的难度,我认为这是一个很好的折衷方案。 不要只为计算机优化,要为程序员优化。您的 2 行函数可以及时变为 20-30。在我的书中使用经过测试且一致的库更好。 那么不要在这些情况下使用它。 答案在最底层是不公平的。我已经找到了图书馆 - 但如果答案在顶部,我会节省几个小时【参考方案3】:将其修改为更加准确。它将日期转换为 'YYYY-MM-DD' 格式,忽略 HH:MM:SS,并采用可选的 endDate 或使用当前日期,并且不关心值的顺序。
function dateDiff(startingDate, endingDate)
var startDate = new Date(new Date(startingDate).toISOString().substr(0, 10));
if (!endingDate)
endingDate = new Date().toISOString().substr(0, 10); // need date in YYYY-MM-DD format
var endDate = new Date(endingDate);
if (startDate > endDate)
var swap = startDate;
startDate = endDate;
endDate = swap;
var startYear = startDate.getFullYear();
var february = (startYear % 4 === 0 && startYear % 100 !== 0) || startYear % 400 === 0 ? 29 : 28;
var daysInMonth = [31, february, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
var yearDiff = endDate.getFullYear() - startYear;
var monthDiff = endDate.getMonth() - startDate.getMonth();
if (monthDiff < 0)
yearDiff--;
monthDiff += 12;
var dayDiff = endDate.getDate() - startDate.getDate();
if (dayDiff < 0)
if (monthDiff > 0)
monthDiff--;
else
yearDiff--;
monthDiff = 11;
dayDiff += daysInMonth[startDate.getMonth()];
return yearDiff + 'Y ' + monthDiff + 'M ' + dayDiff + 'D';
那么你可以这样使用它:
// based on a current date of 2019-05-10
dateDiff('2019-05-10'); // 0Y 0M 0D
dateDiff('2019-05-09'); // 0Y 0M 1D
dateDiff('2018-05-09'); // 1Y 0M 1D
dateDiff('2018-05-18'); // 0Y 11M 23D
dateDiff('2019-01-09'); // 0Y 4M 1D
dateDiff('2019-02-10'); // 0Y 3M 0D
dateDiff('2019-02-11'); // 0Y 2M 27D
dateDiff('2016-02-11'); // 3Y 2M 28D - leap year
dateDiff('1972-11-30'); // 46Y 5M 10D
dateDiff('2016-02-11', '2017-02-11'); // 1Y 0M 0D
dateDiff('2016-02-11', '2016-03-10'); // 0Y 0M 28D - leap year
dateDiff('2100-02-11', '2100-03-10'); // 0Y 0M 27D - not a leap year
dateDiff('2017-02-11', '2016-02-11'); // 1Y 0M 0D - swapped dates to return correct result
dateDiff(new Date() - 1000 * 60 * 60 * 24); // 0Y 0M 1D
较旧但不太准确但更简单的版本
@Rajee***adig 的答案正是我想要的,但他的代码返回的值不正确。这不是很准确,因为它假定从 1970 年 1 月 1 日开始的日期序列与任何其他相同天数的序列相同。例如。它将 7 月 1 日到 9 月 1 日(62 天)的差异计算为 0Y 2M 3D 而不是 0Y 2M 0D,因为 1970 年 1 月 1 日加上 62 天是 3 月 3 日。
// startDate must be a date string
function dateAgo(date)
var startDate = new Date(date);
var diffDate = new Date(new Date() - startDate);
return ((diffDate.toISOString().slice(0, 4) - 1970) + "Y " +
diffDate.getMonth() + "M " + (diffDate.getDate()-1) + "D");
那么你可以这样使用它:
// based on a current date of 2018-03-09
dateAgo('1972-11-30'); // "45Y 3M 9D"
dateAgo('2017-03-09'); // "1Y 0M 0D"
dateAgo('2018-01-09'); // "0Y 2M 0D"
dateAgo('2018-02-09'); // "0Y 0M 28D" -- a little odd, but not wrong
dateAgo('2018-02-01'); // "0Y 1M 5D" -- definitely "feels" wrong
dateAgo('2018-03-09'); // "0Y 0M 0D"
如果您的用例只是日期字符串,那么如果您只想要一个快速而肮脏的 4 班轮,这可以正常工作。
【讨论】:
这个答案对于各种日期都失败了,因为它假设从 1970 年 1 月 1 日开始的日期序列与任何其他相同天数的序列相同,这是无效的。例如。它将 7 月 1 日到 9 月 1 日(62 天)的差异计算为 0Y 2M 3D 而不是 0Y 2M 0D,因为 1970 年 1 月 1 日加上 62 天是 3 月 3 日。 @RobG 我想我清楚地说明了答案中的局限性,并将纳入您的评论作为解释。鉴于这里的许多其他答案都有完全相同的问题,因此不完全确定为什么要投反对票。这样做的目的是简单快捷,但牺牲了完美的准确性。 @RobG 还为您添加了更长但更准确的版本。 这正是我想要的,谢谢! 这需要更多的支持。它解决了上面答案所遇到的问题。干得好!【参考方案4】:我使用这个简单的代码来获取当前日期的年、月、日的差异。
var sdt = new Date('1972-11-30');
var difdt = new Date(new Date() - sdt);
alert((difdt.toISOString().slice(0, 4) - 1970) + "Y " + (difdt.getMonth()+1) + "M " + difdt.getDate() + "D");
【讨论】:
这个代码写的返回不正确的结果。假设今天的日期是 2018 年 3 月 9 日:sdt = new Date("2017-03-09")
将提醒“1Y 1M 1D”,sdt = new Date("2018-02-09")
将提醒“0Y 1M 29D”,sdt = new Date("2018-03-09")
将提醒“0Y 1M 1D”。我对此答案的编辑被拒绝,因此我将更正后的代码添加为单独的答案。【参考方案5】:
我认为您正在寻找与我想要的相同的东西。我尝试使用 javascript 提供的以毫秒为单位的差异来做到这一点,但这些结果在真实的日期世界中不起作用。如果您想要 2016 年 2 月 1 日和 2017 年 1 月 31 日之间的差异,我想要的结果是 1 年 0 个月和 0 天。整整一年(假设您将最后一天算作一整天,例如公寓的租约)。但是,毫秒方法将为您提供 1 年 0 个月和 1 天,因为日期范围包括闰年。所以这是我在 javascript 中为我的 adobe 表单使用的代码(您可以命名字段):(已编辑,我纠正了一个错误)
var f1 = this.getField("LeaseExpiration");
var g1 = this.getField("LeaseStart");
var end = f1.value
var begin = g1.value
var e = new Date(end);
var b = new Date(begin);
var bMonth = b.getMonth();
var bYear = b.getFullYear();
var eYear = e.getFullYear();
var eMonth = e.getMonth();
var bDay = b.getDate();
var eDay = e.getDate() + 1;
if ((eMonth == 0)||(eMonth == 2)||(eMonth == 4)|| (eMonth == 6) || (eMonth == 7) ||(eMonth == 9)||(eMonth == 11))
var eDays = 31;
if ((eMonth == 3)||(eMonth == 5)||(eMonth == 8)|| (eMonth == 10))
var eDays = 30;
if (eMonth == 1&&((eYear % 4 == 0) && (eYear % 100 != 0)) || (eYear % 400 == 0))
var eDays = 29;
if (eMonth == 1&&((eYear % 4 != 0) || (eYear % 100 == 0)))
var eDays = 28;
if ((bMonth == 0)||(bMonth == 2)||(bMonth == 4)|| (bMonth == 6) || (bMonth == 7) ||(bMonth == 9)||(bMonth == 11))
var bDays = 31;
if ((bMonth == 3)||(bMonth == 5)||(bMonth == 8)|| (bMonth == 10))
var bDays = 30;
if (bMonth == 1&&((bYear % 4 == 0) && (bYear % 100 != 0)) || (bYear % 400 == 0))
var bDays = 29;
if (bMonth == 1&&((bYear % 4 != 0) || (bYear % 100 == 0)))
var bDays = 28;
var FirstMonthDiff = bDays - bDay + 1;
if (eDay - bDay < 0)
eMonth = eMonth - 1;
eDay = eDay + eDays;
var daysDiff = eDay - bDay;
if(eMonth - bMonth < 0)
eYear = eYear - 1;
eMonth = eMonth + 12;
var monthDiff = eMonth - bMonth;
var yearDiff = eYear - bYear;
if (daysDiff == eDays)
daysDiff = 0;
monthDiff = monthDiff + 1;
if (monthDiff == 12)
monthDiff = 0;
yearDiff = yearDiff + 1;
if ((FirstMonthDiff != bDays)&&(eDay - 1 == eDays))
daysDiff = FirstMonthDiff;
event.value = yearDiff + " Year(s)" + " " + monthDiff + " month(s) " + daysDiff + " days(s)"
【讨论】:
非常感谢,解决方案包括一切。 对于 2020 年 3 月 4 日和 2020 年 2 月 20 日,这将给出 16 天。但不是 16 天。 将以下代码 sn-p 更改为以下 if (eDay - bDay 工作就像一个魅力,但我不得不做一些调整...... if ((FirstMonthDiff != bDays)&&(eDay == eDays)) 和 Lasitha Benaragama 在上面的评论中提到的变化.【参考方案6】:我已经为此创建了另一个函数:
function dateDiff(date)
date = date.split('-');
var today = new Date();
var year = today.getFullYear();
var month = today.getMonth() + 1;
var day = today.getDate();
var yy = parseInt(date[0]);
var mm = parseInt(date[1]);
var dd = parseInt(date[2]);
var years, months, days;
// months
months = month - mm;
if (day < dd)
months = months - 1;
// years
years = year - yy;
if (month * 100 + day < mm * 100 + dd)
years = years - 1;
months = months + 12;
// days
days = Math.floor((today.getTime() - (new Date(yy + years, mm + months - 1, dd)).getTime()) / (24 * 60 * 60 * 1000));
//
return years: years, months: months, days: days;
不需要任何第三方库。接受一个参数 -- YYYY-MM-DD 格式的日期。
https://gist.github.com/lemmon/d27c2d4a783b1cf72d1d1cc243458d56
【讨论】:
为什么没有人想要几周? 我猜是因为太难了。【参考方案7】:为了方便快捷地使用,我前段时间编写了这个函数。它以一种很好的格式返回两个日期之间的差异。随意使用它(在 webkit 上测试)。
/**
* Function to print date diffs.
*
* @param Date fromDate: The valid start date
* @param Date toDate: The end date. Can be null (if so the function uses "now").
* @param Number levels: The number of details you want to get out (1="in 2 Months",2="in 2 Months, 20 Days",...)
* @param Boolean prefix: adds "in" or "ago" to the return string
* @return String Diffrence between the two dates.
*/
function getNiceTime(fromDate, toDate, levels, prefix)
var lang =
"date.past": "0 ago",
"date.future": "in 0",
"date.now": "now",
"date.year": "0 year",
"date.years": "0 years",
"date.years.prefixed": "0 years",
"date.month": "0 month",
"date.months": "0 months",
"date.months.prefixed": "0 months",
"date.day": "0 day",
"date.days": "0 days",
"date.days.prefixed": "0 days",
"date.hour": "0 hour",
"date.hours": "0 hours",
"date.hours.prefixed": "0 hours",
"date.minute": "0 minute",
"date.minutes": "0 minutes",
"date.minutes.prefixed": "0 minutes",
"date.second": "0 second",
"date.seconds": "0 seconds",
"date.seconds.prefixed": "0 seconds",
,
langFn = function(id,params)
var returnValue = lang[id] || "";
if(params)
for(var i=0;i<params.length;i++)
returnValue = returnValue.replace(""+i+"",params[i]);
return returnValue;
,
toDate = toDate ? toDate : new Date(),
diff = fromDate - toDate,
past = diff < 0 ? true : false,
diff = diff < 0 ? diff * -1 : diff,
date = new Date(new Date(1970,0,1,0).getTime()+diff),
returnString = '',
count = 0,
years = (date.getFullYear() - 1970);
if(years > 0)
var langSingle = "date.year" + (prefix ? "" : ""),
langMultiple = "date.years" + (prefix ? ".prefixed" : "");
returnString += (count > 0 ? ', ' : '') + (years > 1 ? langFn(langMultiple,[years]) : langFn(langSingle,[years]));
count ++;
var months = date.getMonth();
if(count < levels && months > 0)
var langSingle = "date.month" + (prefix ? "" : ""),
langMultiple = "date.months" + (prefix ? ".prefixed" : "");
returnString += (count > 0 ? ', ' : '') + (months > 1 ? langFn(langMultiple,[months]) : langFn(langSingle,[months]));
count ++;
else
if(count > 0)
count = 99;
var days = date.getDate() - 1;
if(count < levels && days > 0)
var langSingle = "date.day" + (prefix ? "" : ""),
langMultiple = "date.days" + (prefix ? ".prefixed" : "");
returnString += (count > 0 ? ', ' : '') + (days > 1 ? langFn(langMultiple,[days]) : langFn(langSingle,[days]));
count ++;
else
if(count > 0)
count = 99;
var hours = date.getHours();
if(count < levels && hours > 0)
var langSingle = "date.hour" + (prefix ? "" : ""),
langMultiple = "date.hours" + (prefix ? ".prefixed" : "");
returnString += (count > 0 ? ', ' : '') + (hours > 1 ? langFn(langMultiple,[hours]) : langFn(langSingle,[hours]));
count ++;
else
if(count > 0)
count = 99;
var minutes = date.getMinutes();
if(count < levels && minutes > 0)
var langSingle = "date.minute" + (prefix ? "" : ""),
langMultiple = "date.minutes" + (prefix ? ".prefixed" : "");
returnString += (count > 0 ? ', ' : '') + (minutes > 1 ? langFn(langMultiple,[minutes]) : langFn(langSingle,[minutes]));
count ++;
else
if(count > 0)
count = 99;
var seconds = date.getSeconds();
if(count < levels && seconds > 0)
var langSingle = "date.second" + (prefix ? "" : ""),
langMultiple = "date.seconds" + (prefix ? ".prefixed" : "");
returnString += (count > 0 ? ', ' : '') + (seconds > 1 ? langFn(langMultiple,[seconds]) : langFn(langSingle,[seconds]));
count ++;
else
if(count > 0)
count = 99;
if(prefix)
if(returnString == "")
returnString = langFn("date.now");
else if(past)
returnString = langFn("date.past",[returnString]);
else
returnString = langFn("date.future",[returnString]);
return returnString;
【讨论】:
嘿,克里斯,我试过这个答案,但没有用。getNiceTime(new Date('2014-05-10'), new Date('2015-10-10'), 4, true);
应该返回 1 year, 5 months, 1 hour ago
但确实返回 1 year, 5 months, 2 days, 1 hour ago
【参考方案8】:
在 dayjs 中,我们是这样做的:
export const getAgeDetails = (oldDate: dayjs.Dayjs, newDate: dayjs.Dayjs) =>
const years = newDate.diff(oldDate, 'year');
const months = newDate.diff(oldDate, 'month') - years * 12;
const days = newDate.diff(oldDate.add(years, 'year').add(months, 'month'), 'day');
return
years,
months,
days,
allDays: newDate.diff(oldDate, 'day'),
;
;
它完美地计算它,包括闰年和不同月份的天数。
【讨论】:
太棒了!尤其是考虑到 Dayjs 的低占用空间。 你救了我的命!经过多次研究,这就像一个魅力!谢谢老哥!【参考方案9】:一些数学是有序的。
您可以在 Javascript 中从另一个 Date 对象中减去一个 Date 对象,您将得到它们之间的差异(以毫秒为单位)。从此结果中,您可以提取所需的其他部分(天、月等)
例如:
var a = new Date(2010, 10, 1);
var b = new Date(2010, 9, 1);
var c = a - b; // c equals 2674800000,
// the amount of milisseconds between September 1, 2010
// and August 1, 2010.
现在你可以得到任何你想要的部分。例如,两个日期之间相隔了多少天:
var days = (a - b) / (60 * 60 * 24 * 1000);
// 60 * 60 * 24 * 1000 is the amount of milisseconds in a day.
// the variable days now equals 30.958333333333332.
差不多 31 天了。然后,您可以向下舍入 30 天,并使用剩余的时间来计算小时数、分钟数等。
【讨论】:
感谢 Renan 抽空回答。非常好,但是,相同的 Pawelmhm - 获取两个日期之间的毫秒数或天数很简单 - 但考虑到一个月中的天数和闰年等,精确计算很棘手......【参考方案10】:如果您正在使用date-fns
并且不想安装Moment.js
或moment-precise-range-plugin
。您可以使用以下date-fns
函数获得与 moment-precise-range-plugin 相同的结果
intervalToDuration(
start: new Date(),
end: new Date("24 Jun 2020")
)
这将在下面的 JSON 对象中提供输出
"years": 0,
"months": 0,
"days": 0,
"hours": 19,
"minutes": 35,
"seconds": 24
现场示例https://stackblitz.com/edit/react-wvxvql
文档链接https://date-fns.org/v2.14.0/docs/intervalToDuration
【讨论】:
【参考方案11】:另一个解决方案,基于一些 PHP 代码。 同样基于 PHP 的 strtotime 函数可以在这里找到:http://phpjs.org/functions/strtotime/。
Date.dateDiff = function(d1, d2)
d1 /= 1000;
d2 /= 1000;
if (d1 > d2) d2 = [d1, d1 = d2][0];
var diffs =
year: 0,
month: 0,
day: 0,
hour: 0,
minute: 0,
second: 0
$.each(diffs, function(interval)
while (d2 >= (d3 = Date.strtotime('+1 '+interval, d1)))
d1 = d3;
++diffs[interval];
);
return diffs;
;
用法:
> d1 = new Date(2000, 0, 1)
Sat Jan 01 2000 00:00:00 GMT+0100 (CET)
> d2 = new Date(2013, 9, 6)
Sun Oct 06 2013 00:00:00 GMT+0200 (CEST)
> Date.dateDiff(d1, d2)
Object
day: 5
hour: 0
minute: 0
month: 9
second: 0
year: 13
【讨论】:
我承认这段代码很短,很干净而且不那么难理解,但我怀疑它的性能(特别是有很多数据)。【参考方案12】: let startDate = moment(new Date('2017-05-12')); // yyyy-MM-dd
let endDate = moment(new Date('2018-09-14')); // yyyy-MM-dd
let Years = newDate.diff(date, 'years');
let months = newDate.diff(date, 'months');
let days = newDate.diff(date, 'days');
console.log("Year: " + Years, ", Month: " months-(Years*12), ", Days: " days-(Years*365.25)-((365.25*(days- (Years*12)))/12));
sn-p 上方将打印:年:1,月:4,日:2
【讨论】:
添加注释,如果您从服务器获得更长的日期,即。2018-10-31T00:58:08.041Z
dateVar.substring(0,9)
会很好吃
@mewc 这个库有复杂的解析器,查看文档momentjs.com/docs/#/parsing【参考方案13】:
使用平面 Javascript:
function dateDiffInDays(start, end)
var MS_PER_DAY = 1000 * 60 * 60 * 24;
var a = new Date(start);
var b = new Date(end);
const diffTime = Math.abs(a - b);
const diffDays = Math.ceil(diffTime / MS_PER_DAY);
console.log("Days: ", diffDays);
// Discard the time and time-zone information.
const utc1 = Date.UTC(a.getFullYear(), a.getMonth(), a.getDate());
const utc2 = Date.UTC(b.getFullYear(), b.getMonth(), b.getDate());
return Math.floor((utc2 - utc1) / MS_PER_DAY);
function dateDiffInDays_Months_Years(start, end)
var m1 = new Date(start);
var m2 = new Date(end);
var yDiff = m2.getFullYear() - m1.getFullYear();
var mDiff = m2.getMonth() - m1.getMonth();
var dDiff = m2.getDate() - m1.getDate();
if (dDiff < 0)
var daysInLastFullMonth = getDaysInLastFullMonth(start);
if (daysInLastFullMonth < m1.getDate())
dDiff = daysInLastFullMonth + dDiff + (m1.getDate() -
daysInLastFullMonth);
else
dDiff = daysInLastFullMonth + dDiff;
mDiff--;
if (mDiff < 0)
mDiff = 12 + mDiff;
yDiff--;
console.log('Y:', yDiff, ', M:', mDiff, ', D:', dDiff);
function getDaysInLastFullMonth(day)
var d = new Date(day);
console.log(d.getDay() );
var lastDayOfMonth = new Date(d.getFullYear(), d.getMonth() + 1, 0);
console.log('last day of month:', lastDayOfMonth.getDate() ); //
return lastDayOfMonth.getDate();
使用moment.js:
function dateDiffUsingMoment(start, end)
var a = moment(start,'M/D/YYYY');
var b = moment(end,'M/D/YYYY');
var diffDaysMoment = b.diff(a, 'days');
console.log('Moments.js : ', diffDaysMoment);
preciseDiffMoments(a,b);
function preciseDiffMoments( a, b)
var m1= a, m2=b;
m1.add(m2.utcOffset() - m1.utcOffset(), 'minutes'); // shift timezone of m1 to m2
var yDiff = m2.year() - m1.year();
var mDiff = m2.month() - m1.month();
var dDiff = m2.date() - m1.date();
if (dDiff < 0)
var daysInLastFullMonth = moment(m2.year() + '-' + (m2.month() + 1),
"YYYY-MM").subtract(1, 'M').daysInMonth();
if (daysInLastFullMonth < m1.date()) // 31/01 -> 2/03
dDiff = daysInLastFullMonth + dDiff + (m1.date() -
daysInLastFullMonth);
else
dDiff = daysInLastFullMonth + dDiff;
mDiff--;
if (mDiff < 0)
mDiff = 12 + mDiff;
yDiff--;
console.log('getMomentum() Y:', yDiff, ', M:', mDiff, ', D:', dDiff);
使用以下示例测试了上述功能:
var sample1 = all('2/13/2018', '3/15/2018'); // 'M/D/YYYY' 30, Y: 0 , M: 1 , D: 2
console.log(sample1);
var sample2 = all('10/09/2019', '7/7/2020'); // 272, Y: 0 , M: 8 , D: 29
console.log(sample2);
function all(start, end)
dateDiffInDays(start, end);
dateDiffInDays_Months_Years(start, end);
try
dateDiffUsingMoment(start, end);
catch (e)
console.log(e);
【讨论】:
【参考方案14】:非常老的线程,我知道,但这是我的贡献,因为线程尚未解决。
它考虑了闰年,并且不假定每月或每年的固定天数。
它在边境案件中可能存在缺陷,因为我没有对其进行彻底测试,但它适用于原始问题中提供的所有日期,因此我很有信心。
function calculate()
var fromDate = document.getElementById('fromDate').value;
var toDate = document.getElementById('toDate').value;
try
document.getElementById('result').innerHTML = '';
var result = getDateDifference(new Date(fromDate), new Date(toDate));
if (result && !isNaN(result.years))
document.getElementById('result').innerHTML =
result.years + ' year' + (result.years == 1 ? ' ' : 's ') +
result.months + ' month' + (result.months == 1 ? ' ' : 's ') + 'and ' +
result.days + ' day' + (result.days == 1 ? '' : 's');
catch (e)
console.error(e);
function getDateDifference(startDate, endDate)
if (startDate > endDate)
console.error('Start date must be before end date');
return null;
var startYear = startDate.getFullYear();
var startMonth = startDate.getMonth();
var startDay = startDate.getDate();
var endYear = endDate.getFullYear();
var endMonth = endDate.getMonth();
var endDay = endDate.getDate();
// We calculate February based on end year as it might be a leep year which might influence the number of days.
var february = (endYear % 4 == 0 && endYear % 100 != 0) || endYear % 400 == 0 ? 29 : 28;
var daysOfMonth = [31, february, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31];
var startDateNotPassedInEndYear = (endMonth < startMonth) || endMonth == startMonth && endDay < startDay;
var years = endYear - startYear - (startDateNotPassedInEndYear ? 1 : 0);
var months = (12 + endMonth - startMonth - (endDay < startDay ? 1 : 0)) % 12;
// (12 + ...) % 12 makes sure index is always between 0 and 11
var days = startDay <= endDay ? endDay - startDay : daysOfMonth[(12 + endMonth - 1) % 12] - startDay + endDay;
return
years: years,
months: months,
days: days
;
<p><input type="text" name="fromDate" id="fromDate" placeholder="yyyy-mm-dd" value="1999-02-28" /></p>
<p><input type="text" name="toDate" id="toDate" placeholder="yyyy-mm-dd" value="2000-03-01" /></p>
<p><input type="button" name="calculate" value="Calculate" onclick="javascript:calculate();" /></p>
<p />
<p id="result"></p>
【讨论】:
【参考方案15】:我使用了一堆函数。 纯 JavaScript 且精确。
此代码包含计算天、月和年时差的函数。其中之一可用于获取精确的时差,例如X years, Y months, Z days
。在代码的最后我提供了一些测试。
工作原理:
getDaysDiff()
:
将时间差从毫秒转换为天。
getYearsDiff()
:
无需担心两个日期的月份和日期的影响。该函数通过前后移动日期来计算年差。
getMonthsDiff()
(这个和问题无关,但calExactTimeDiff()
中使用了这个概念,我认为可能有人需要这样的功能,所以我插入它):
这个有点棘手。艰苦的工作是处理两个日期的月份和日期。
如果endDate
的月份多于startDate
的月份,这意味着又过了一年(12 个月)。但这在monthsOfFullYears
中得到了解决,所以唯一需要做的就是加上endDate
和startDate
月份的减法。
如果startDate
的月份大于endDate
的月份,则没有其他年份。所以我们应该得到它们之间的区别。想象一下,我们想从当年的 10
月份转到下一年的 2
月份。我们可以这样:11, 12, 1, 2
。所以我们通过了4
个月。这等于12 - (10 - 2)
。我们得到月份之间的差异,然后从一整年的月份中减去它。
下一步是照顾几个月的几天。如果endDate
的日期大于或等于startDate
,则意味着又过了一个月。所以我们添加1
到它。但如果它更少,那么就没有什么可担心的了。但是在我的代码中我没有这样做。因为当我添加月份之间的差异时,我假设月份的天数是相等的。所以我已经添加了1
。因此,如果endDate
的天数小于startDate
,我必须将months
减少1
。
有一个例外:如果月份相等且endDate
的日期小于startDate
的日期,月份应为11
。
我在calExactTimeDiff()
中使用了相同的概念。
希望有用:)
// time difference in Days
function getDaysDiff(startDate = new Date(), endDate = new Date())
if (startDate > endDate) [startDate, endDate] = [endDate, startDate];
let timeDiff = endDate - startDate;
let timeDiffInDays = Math.floor(timeDiff / (1000 * 3600 * 24));
return timeDiffInDays;
// time difference in Months
function getMonthsDiff(startDate = new Date(), endDate = new Date())
let monthsOfFullYears = getYearsDiff(startDate, endDate) * 12;
let months = monthsOfFullYears;
// the variable below is not necessary, but I kept it for understanding of code
// we can use "startDate" instead of it
let yearsAfterStart = new Date(
startDate.getFullYear() + getYearsDiff(startDate, endDate),
startDate.getMonth(),
startDate.getDate()
);
let isDayAhead = endDate.getDate() >= yearsAfterStart.getDate();
if (startDate.getMonth() == endDate.getMonth() && !isDayAhead)
months = 11;
return months;
if (endDate.getMonth() >= yearsAfterStart.getMonth())
let diff = endDate.getMonth() - yearsAfterStart.getMonth();
months += (isDayAhead) ? diff : diff - 1;
else
months += isDayAhead
? 12 - (startDate.getMonth() - endDate.getMonth())
: 12 - (startDate.getMonth() - endDate.getMonth()) - 1;
return months;
// time difference in Years
function getYearsDiff(startDate = new Date(), endDate = new Date())
if (startDate > endDate) [startDate, endDate] = [endDate, startDate];
let yearB4End = new Date(
endDate.getFullYear() - 1,
endDate.getMonth(),
endDate.getDate()
);
let year = 0;
year = yearB4End > startDate
? yearB4End.getFullYear() - startDate.getFullYear()
: 0;
let yearsAfterStart = new Date(
startDate.getFullYear() + year + 1,
startDate.getMonth(),
startDate.getDate()
);
if (endDate >= yearsAfterStart) year++;
return year;
// time difference in format: X years, Y months, Z days
function calExactTimeDiff(firstDate, secondDate)
if (firstDate > secondDate)
[firstDate, secondDate] = [secondDate, firstDate];
let monthDiff = 0;
let isDayAhead = secondDate.getDate() >= firstDate.getDate();
if (secondDate.getMonth() >= firstDate.getMonth())
let diff = secondDate.getMonth() - firstDate.getMonth();
monthDiff += (isDayAhead) ? diff : diff - 1;
else
monthDiff += isDayAhead
? 12 - (firstDate.getMonth() - secondDate.getMonth())
: 12 - (firstDate.getMonth() - secondDate.getMonth()) - 1;
let dayDiff = 0;
if (isDayAhead)
dayDiff = secondDate.getDate() - firstDate.getDate();
else
let b4EndDate = new Date(
secondDate.getFullYear(),
secondDate.getMonth() - 1,
firstDate.getDate()
)
dayDiff = getDaysDiff(b4EndDate, secondDate);
if (firstDate.getMonth() == secondDate.getMonth() && !isDayAhead)
monthDiff = 11;
let exactTimeDiffUnits =
yrs: getYearsDiff(firstDate, secondDate),
mths: monthDiff,
dys: dayDiff,
;
return `$exactTimeDiffUnits.yrs years, $exactTimeDiffUnits.mths months, $exactTimeDiffUnits.dys days`
let s = new Date(2012, 4, 12);
let e = new Date(2008, 5, 24);
console.log(calExactTimeDiff(s, e));
s = new Date(2001, 7, 4);
e = new Date(2016, 6, 9);
console.log(calExactTimeDiff(s, e));
s = new Date(2011, 11, 28);
e = new Date(2021, 3, 6);
console.log(calExactTimeDiff(s, e));
s = new Date(2020, 8, 7);
e = new Date(2021, 8, 6);
console.log(calExactTimeDiff(s, e));
【讨论】:
如果说 2 天之间的 1 天不到一年,则此方法不起作用,例如“2021-07-15”到“2022-07-14”将返回“0 年,- 1个月30天” 谢谢你,@Touchpad。我修好了。【参考方案16】:以人性化的方式获取两个日期之间的差异
此函数能够返回类似自然语言的文本。使用它来获得如下响应:
“4年1个月11天”
“1年2个月”
“11个月零20天”
“12 天”
重要提示:date-fns 是一个依赖项
只需复制下面的代码并将过去的日期插入我们的 getElapsedTime 函数!它会将输入的日期与当前时间进行比较,并返回类似人类的响应。
import * as dateFns from "https://cdn.skypack.dev/date-fns@2.22.1";
function getElapsedTime(pastDate)
const duration = dateFns.intervalToDuration(
start: new Date(pastDate),
end: new Date(),
);
let [years, months, days] = ["", "", ""];
if (duration.years > 0)
years = duration.years === 1 ? "1 year" : `$duration.years years`;
if (duration.months > 0)
months = duration.months === 1 ? "1 month" : `$duration.months months`;
if (duration.days > 0)
days = duration.days === 1 ? "1 day" : `$duration.days days`;
let response = [years, months, days].filter(Boolean);
switch (response.length)
case 3:
response[1] += " and";
response[0] += ",";
break;
case 2:
response[0] += " and";
break;
return response.join(" ");
【讨论】:
【参考方案17】:时间跨度以天、小时、分钟、秒、毫秒为单位:
// Extension for Date
Date.difference = function (dateFrom, dateTo)
var diff = TotalMs: dateTo - dateFrom ;
diff.Days = Math.floor(diff.TotalMs / 86400000);
var remHrs = diff.TotalMs % 86400000;
var remMin = remHrs % 3600000;
var remS = remMin % 60000;
diff.Hours = Math.floor(remHrs / 3600000);
diff.Minutes = Math.floor(remMin / 60000);
diff.Seconds = Math.floor(remS / 1000);
diff.Milliseconds = Math.floor(remS % 1000);
return diff;
;
// Usage
var a = new Date(2014, 05, 12, 00, 5, 45, 30); //a: Thu Jun 12 2014 00:05:45 GMT+0400
var b = new Date(2014, 02, 12, 00, 0, 25, 0); //b: Wed Mar 12 2014 00:00:25 GMT+0400
var diff = Date.difference(b, a);
/* diff:
Days: 92
Hours: 0
Minutes: 5
Seconds: 20
Milliseconds: 30
TotalMs: 7949120030
*/
【讨论】:
【参考方案18】:这两个代码都不适合我,所以我用这个代替了几个月和几天:
function monthDiff(d2, d1)
var months;
months = (d2.getFullYear() - d1.getFullYear()) * 12;
months -= d1.getMonth() + 1;
months += d2.getMonth() + 1;
return months <= 0 ? 0 : months;
function daysInMonth(date)
return new Date(date.getYear(), date.getMonth() + 1, 0).getDate();
function diffDate(date1, date2)
if (date2 && date2.getTime() && !isNaN(date2.getTime()))
var months = monthDiff(date1, date2);
var days = 0;
if (date1.getUTCDate() >= date2.getUTCDate())
days = date1.getUTCDate() - date2.getUTCDate();
else
months--;
days = date1.getUTCDate() - date2.getUTCDate() + daysInMonth(date2);
// Use the variables months and days how you need them.
【讨论】:
【参考方案19】:以下是一种算法,它给出了正确但不完全精确的算法,因为它没有考虑闰年。它还假设一个月有 30 天。例如,如果某人居住在 12/11/2010 到 11/10/2011 的地址中,它可以快速判断此人在那里住了 10 年。月零 29 天。从 12/11/2010 到 11/12/2011 是 11 个月零 1 天。对于某些类型的应用,这种精度就足够了。这适用于这些类型的应用程序,因为它旨在简化:
var datediff = function(start, end)
var diff = years: 0, months: 0, days: 0 ;
var timeDiff = end - start;
if (timeDiff > 0)
diff.years = end.getFullYear() - start.getFullYear();
diff.months = end.getMonth() - start.getMonth();
diff.days = end.getDate() - start.getDate();
if (diff.months < 0)
diff.years--;
diff.months += 12;
if (diff.days < 0)
diff.months = Math.max(0, diff.months - 1);
diff.days += 30;
return diff;
;
Unit tests
【讨论】:
【参考方案20】:使用 TypeScript/JavaScript 计算年、月、日、分、秒、毫秒的两个日期之间的差异
dateDifference(actualDate)
// Calculate time between two dates:
const date1 = actualDate; // the date you already commented/ posted
const date2: any = new Date(); // today
let r = ; // object for clarity
let message: string;
const diffInSeconds = Math.abs(date2 - date1) / 1000;
const days = Math.floor(diffInSeconds / 60 / 60 / 24);
const hours = Math.floor(diffInSeconds / 60 / 60 % 24);
const minutes = Math.floor(diffInSeconds / 60 % 60);
const seconds = Math.floor(diffInSeconds % 60);
const milliseconds =
Math.round((diffInSeconds - Math.floor(diffInSeconds)) * 1000);
const months = Math.floor(days / 31);
const years = Math.floor(months / 12);
// the below object is just optional
// if you want to return an object instead of a message
r =
years: years,
months: months,
days: days,
hours: hours,
minutes: minutes,
seconds: seconds,
milliseconds: milliseconds
;
// check if difference is in years or months
if (years === 0 && months === 0)
// show in days if no years / months
if (days > 0)
if (days === 1)
message = days + ' day';
else message = days + ' days';
else if (hours > 0)
if (hours === 1)
message = hours + ' hour';
else
message = hours + ' hours';
else
// show in minutes if no years / months / days
if (minutes === 1)
message = minutes + ' minute';
else message = minutes + ' minutes';
else if (years === 0 && months > 0)
// show in months if no years
if (months === 1)
message = months + ' month';
else message = months + ' months';
else if (years > 0)
// show in years if years exist
if (years === 1)
message = years + ' year';
else message = years + ' years';
return 'Posted ' + message + ' ago';
// this is the message a user see in the view
但是,您可以更新消息的上述逻辑以显示秒和毫秒,或者使用对象“r”以任何您想要的方式格式化消息。
如果你想直接复制代码,可以用上面的代码here查看我的gist
【讨论】:
【参考方案21】:我知道这是一个旧线程,但我想根据@Pawel Miech 的回答投入我的 2 美分。
确实,您需要将差异转换为毫秒,然后您需要进行一些数学运算。但请注意,您需要以倒数的方式进行数学运算,即您需要计算年、月、日、小时和分钟。
我曾经做过这样的事情:
var mins;
var hours;
var days;
var months;
var years;
var diff = new Date() - new Date(yourOldDate);
// yourOldDate may be is coming from DB, for example, but it should be in the correct format ("MM/dd/yyyy hh:mm:ss:fff tt")
years = Math.floor((diff) / (1000 * 60 * 60 * 24 * 365));
diff = Math.floor((diff) % (1000 * 60 * 60 * 24 * 365));
months = Math.floor((diff) / (1000 * 60 * 60 * 24 * 30));
diff = Math.floor((diff) % (1000 * 60 * 60 * 24 * 30));
days = Math.floor((diff) / (1000 * 60 * 60 * 24));
diff = Math.floor((diff) % (1000 * 60 * 60 * 24));
hours = Math.floor((diff) / (1000 * 60 * 60));
diff = Math.floor((diff) % (1000 * 60 * 60));
mins = Math.floor((diff) / (1000 * 60));
但是,当然,这并不精确,因为它假定所有年份都有 365 天,所有月份都有 30 天,但并非在所有情况下都是如此。
【讨论】:
【参考方案22】:它非常简单,请使用下面的代码,它将根据 //3 年 9 个月 3 周 5 天 15 小时 50 分钟给出该格式的差异
Date.getFormattedDateDiff = function(date1, date2)
var b = moment(date1),
a = moment(date2),
intervals = ['years','months','weeks','days'],
out = [];
for(var i=0; i<intervals.length; i++)
var diff = a.diff(b, intervals[i]);
b.add(diff, intervals[i]);
out.push(diff + ' ' + intervals[i]);
return out.join(', ');
;
var today = new Date(),
newYear = new Date(today.getFullYear(), 0, 1),
y2k = new Date(2000, 0, 1);
//(AS OF NOV 29, 2016)
//Time since New Year: 0 years, 10 months, 4 weeks, 0 days
console.log( 'Time since New Year: ' + Date.getFormattedDateDiff(newYear, today) );
//Time since Y2K: 16 years, 10 months, 4 weeks, 0 days
console.log( 'Time since Y2K: ' + Date.getFormattedDateDiff(y2k, today) );
【讨论】:
【参考方案23】:通过使用Moment 库和一些自定义逻辑,我们可以得到准确的日期差异
var out;
out = diffDate(new Date('2014-05-10'), new Date('2015-10-10'));
display(out);
out = diffDate(new Date('2014-05-10'), new Date('2015-10-09'));
display(out);
out = diffDate(new Date('2014-05-10'), new Date('2015-09-09'));
display(out);
out = diffDate(new Date('2014-05-10'), new Date('2015-03-09'));
display(out);
out = diffDate(new Date('2014-05-10'), new Date('2016-03-09'));
display(out);
out = diffDate(new Date('2014-05-10'), new Date('2016-03-11'));
display(out);
function diffDate(startDate, endDate)
var b = moment(startDate),
a = moment(endDate),
intervals = ['years', 'months', 'weeks', 'days'],
out = ;
for (var i = 0; i < intervals.length; i++)
var diff = a.diff(b, intervals[i]);
b.add(diff, intervals[i]);
out[intervals[i]] = diff;
return out;
function display(obj)
var str = '';
for (key in obj)
str = str + obj[key] + ' ' + key + ' '
console.log(str);
<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.24.0/moment.js"></script>
【讨论】:
【参考方案24】:这段代码应该会给你想要的结果
//************************** Enter your dates here **********************//
var startDate = "10/05/2014";
var endDate = "11/3/2016"
//******* and press "Run", you will see the result in a popup *********//
var noofdays = 0;
var sdArr = startDate.split("/");
var startDateDay = parseInt(sdArr[0]);
var startDateMonth = parseInt(sdArr[1]);
var startDateYear = parseInt(sdArr[2]);
sdArr = endDate.split("/")
var endDateDay = parseInt(sdArr[0]);
var endDateMonth = parseInt(sdArr[1]);
var endDateYear = parseInt(sdArr[2]);
console.log(startDateDay+' '+startDateMonth+' '+startDateYear);
var yeardays = 365;
var monthArr = [31,,31,30,31,30,31,31,30,31,30,31];
var noofyears = 0
var noofmonths = 0;
if((startDateYear%4)==0) monthArr[1]=29;
else monthArr[1]=28;
if(startDateYear == endDateYear)
noofyears = 0;
noofmonths = getMonthDiff(startDate,endDate);
if(noofmonths < 0) noofmonths = 0;
noofdays = getDayDiff(startDate,endDate);
else
if(endDateMonth < startDateMonth)
noofyears = (endDateYear - startDateYear)-1;
if(noofyears < 1) noofyears = 0;
else
noofyears = endDateYear - startDateYear;
noofmonths = getMonthDiff(startDate,endDate);
if(noofmonths < 0) noofmonths = 0;
noofdays = getDayDiff(startDate,endDate);
alert(noofyears+' year, '+ noofmonths+' months, '+ noofdays+' days');
function getDayDiff(startDate,endDate)
if(endDateDay >=startDateDay)
noofdays = 0;
if(endDateDay > startDateDay)
noofdays = endDateDay - startDateDay;
else
if((endDateYear%4)==0)
monthArr[1]=29;
else
monthArr[1] = 28;
if(endDateMonth != 1)
noofdays = (monthArr[endDateMonth-2]-startDateDay) + endDateDay;
else
noofdays = (monthArr[11]-startDateDay) + endDateDay;
return noofdays;
function getMonthDiff(startDate,endDate)
if(endDateMonth > startDateMonth)
noofmonths = endDateMonth - startDateMonth;
if(endDateDay < startDateDay)
noofmonths--;
else
noofmonths = (12-startDateMonth) + endDateMonth;
if(endDateDay < startDateDay)
noofmonths--;
return noofmonths;
https://jsfiddle.net/moremanishk/hk8c419f/
【讨论】:
【参考方案25】:您应该尝试使用date-fns。下面是我使用来自date-fns 的intervalToDuration 和formatDuration 函数的方法。
let startDate = Date.parse("2010-10-01 00:00:00 UTC");
let endDate = Date.parse("2020-11-01 00:00:00 UTC");
let duration = intervalToDuration(start: startDate, end: endDate);
let durationInWords = formatDuration(duration, format: ["years", "months", "days"]); //output: 10 years 1 month
【讨论】:
【参考方案26】:因为我不得不使用moment-hijri(回历)并且不能使用 moment.diff() 方法,所以我想出了这个解决方案。也可以和moment.js一起使用
var momenti = require('moment-hijri')
//calculate hijri
var strt = await momenti(somedateobject)
var until = await momenti()
var years = await 0
var months = await 0
var days = await 0
while(strt.valueOf() < until.valueOf())
await strt.add(1, 'iYear');
await years++
await strt.subtract(1, 'iYear');
await years--
while(strt.valueOf() < until.valueOf())
await strt.add(1, 'iMonth');
await months++
await strt.subtract(1, 'iMonth');
await months--
while(strt.valueOf() < until.valueOf())
await strt.add(1, 'day');
await days++
await strt.subtract(1, 'day');
await days--
await console.log(years)
await console.log(months)
await console.log(days)
【讨论】:
【参考方案27】:我个人会使用http://www.datejs.com/,真的很方便。具体看time.js文件:http://code.google.com/p/datejs/source/browse/trunk/src/time.js
【讨论】:
感谢乔的分享。但是,我找不到 datejs 能够说出“4 年 2 个月和 11 天前”这样的两个日期之间的确切时差?【参考方案28】:我是这样做的。精确的?也许也许不是。试试看
<html>
<head>
<title> Age Calculator</title>
</head>
<input type="date" id="startDate" value="2000-01-01">
<input type="date" id="endDate" value="2020-01-01">
<button onclick="getAge(new Date(document.getElementById('startDate').value), new Date(document.getElementById('endDate').value))">Check Age</button>
<script>
function getAge (startDate, endDate)
var diff = endDate-startDate
var age = new Date(new Date("0000-01-01").getTime()+diff)
var years = age.getFullYear()
var months = age.getMonth()
var days = age.getDate()
console.log(years,"years",months,"months",days-1,"days")
return (years+"years "+ months+ "months"+ days,"days")
</script>
</html>
【讨论】:
【参考方案29】:我在遇到同样问题时偶然发现了这一点。 这是我的代码。 完全依赖JS日期函数,处理闰年,不按小时比较天数,避免了夏令时问题。
function dateDiff(start, end)
let years = 0, months = 0, days = 0;
// Day diffence. Trick is to use setDate(0) to get the amount of days
// from the previous month if the end day less than the start day.
if (end.getDate() < start.getDate())
months = -1;
let datePtr = new Date(end);
datePtr.setDate(0);
days = end.getDate() + (datePtr.getDate() - start.getDate());
else
days = end.getDate() - start.getDate();
if (end.getMonth() < start.getMonth() ||
(end.getMonth() === start.getMonth() && end.getDate() < start.getDate()))
years = -1;
months += end.getMonth() + (12 - start.getMonth());
else
months += end.getMonth() - start.getMonth();
years += end.getFullYear() - start.getFullYear();
console.log(`$yearsy $monthsm $daysd`);
return [years, months, days];
let a = new Date(2019,6,31); // 31 Jul 2019
let b = new Date(2022,2, 1); // 1 Mar 2022
console.log(dateDiff(a, b)); // [2, 7, -2]
【讨论】:
这个问题需要 Javascript,而不是 Typescript。如果你修复它,我会投票有用。 只需删除点后面的类型标识符。我在这里分享了最好的算法。我不在乎你的投票。 这与个人无关。作者需要一个 Javascript 解决方案。不是打字稿解决方案。我要求你进行修复。这是正确的。 这不处理不同长度的月份,如添加的示例所示。 2019年7月31日到2022年3月1日应该是2年6个月1天,但是函数返回[2, 7, -2]
,即2年7个月-2天。以上是关于JavaScript 中两个日期的年、月、日之间的差异的主要内容,如果未能解决你的问题,请参考以下文章