[momentjs] Moment JS - check if a date is today or in the future

I am trying to use momentjs to check if a given date is today or in the future.

This is what I have so far:

<script type="text/javascript" src="http://momentjs.com/downloads/moment.min.js"></script>
<script type="text/javascript">

var SpecialToDate = '31/01/2014'; // DD/MM/YYYY

var SpecialTo = moment(SpecialToDate, "DD/MM/YYYY");
if (moment().diff(SpecialTo) > 0) {
    alert('date is today or in future');
} else {
    alert('date is in the past');
}

</script>

The code is evaluating my date (31st of Jan 2014) as a date in past.

Any idea what I am doing wrong?

Use the simplest one to check for future date

if(moment().diff(yourDate) >=  0)
     alert ("Past or current date");
else
     alert("It is a future date");

You can use the isAfter() query function of momentjs:

Check if a moment is after another moment.

moment('2010-10-20').isAfter('2010-10-19'); // true

If you want to limit the granularity to a unit other than milliseconds, pass the units as the second parameter.

moment('2010-10-20').isAfter('2010-01-01', 'year'); // false

moment('2010-10-20').isAfter('2009-12-31', 'year'); // true

http://momentjs.com/docs/#/query/is-after/

Select yesterday to check past days or not with help of moment().subtract(1, "day");

Reference:- http://momentjs.com/docs/#/manipulating/subtract/

function myFunction() {_x000D_
  var yesterday = moment().subtract(1, "day").format("YYYY-MM-DD");_x000D_
  var SpecialToDate = document.getElementById("theDate").value;_x000D_
_x000D_
  if (moment(SpecialToDate, "YYYY-MM-DD", true).isAfter(yesterday)) {_x000D_
    alert("date is today or in future");_x000D_
    console.log("date is today or in future");_x000D_
  } else {_x000D_
    alert("date is in the past");_x000D_
    console.log("date is in the past");_x000D_
  }_x000D_
}

<script src="http://momentjs.com/downloads/moment.js"></script>_x000D_
<input type="date" id="theDate" onchange="myFunction()">

invert isBefore method of moment to check if a date is same as today or in future like this:

!moment(yourDate).isBefore(moment(), "day");

Since no one seems to have mentioned it yet, the simplest way to check if a Moment date object is in the past:

momentObj.isBefore()

Or in the future:

momentObj.isAfter()

Just leave the args blank -- that'll default to now.

There's also isSameOrAfter and isSameOrBefore.

N.B. this factors in time. If you only care about the day, see Dipendu's answer.

You can use the isSame function:

var iscurrentDate = startTime.isSame(new Date(), "day");
if(iscurrentDate) {

}

// Returns true if it is today or false if it's not
moment(SpecialToDate).isSame(moment(), 'day');

if firstDate is same or after(future) secondDate return true else return false. Toda is firstDate = new Date();

  static isFirstDateSameOrAfterSecondDate(firstDate: Date, secondDate: Date): boolean {
    var date1 = moment(firstDate);
    var date2 = moment(secondDate);
    if(date1 && date2){
      return date1.isSameOrBefore(date2,'day');
    }
    return false;
  }

There is isSame, isBefore and isAfter for day compare moment example;

  static isFirstDateSameSecondDate(firstDate: Date, secondDate: Date): boolean {
    var date1 = moment(firstDate);
    var date2 = moment(secondDate);
    if (date1 && date2) {
      return date1.isSame(date2,'day');
    }
    return false;
  }

  static isFirstDateAfterSecondDate(firstDate: Date, secondDate: Date): boolean {
    var date1 = moment(firstDate);
    var date2 = moment(secondDate);
    if(date1 && date2){
      return date1.isAfter(date2,'day');
    }
    return false;
  }

  static isFirstDateBeforeSecondDate(firstDate: Date, secondDate: Date): boolean {
    var date1 = moment(firstDate);
    var date2 = moment(secondDate);
    if(date1 && date2){
      return date1.isBefore(date2,'day');
    }
    return false;
  }

check with following:

let isContinue = moment().diff('2020-04-04T20:06:11+05:30')/1000

it is returning in seconds..

If will check as 2 mins condition then

if (isContinue < 120) {
  ..To check otp details or further logic
} else {
   // otp is getting invalid
}

Update

moment().isSame('2010-02-01', 'day'); // Return true if we are the 2010-02-01

I have since found the isSame function, which in I believe is the correct function to use for figuring out if a date is today.

Original answer

Just in case someone else needs this, just do this:

const isToday = moment(0, "HH").diff(date, "days") == 0;

or if you want a function:

isToday = date => moment(0,"HH").diff(date, "days") == 0;

Where date is the date you want to check for.

Explanation

moment(0, "HH") returns today's day at midnight.

date1.diff(date2, "days") returns the number of days between the date1 and date2.

To check if it is today:

If we compare two dates which contain also the time information isSame will obviously fail. diff will fail in case that the two dates span over the new day:

var date1 = moment("01.01.2016 23:59:00", "DD.MM.YYYY HH.mm.ss");
var date2 = moment("02.01.2016 00:01:00", "DD.MM.YYYY HH.mm.ss");
var diff = date2.diff(date1); // 2seconds

I think the best way, even if it is not quick and short, is the following:

var isSame = date1.date() == date2.date() && date1.month() == date2.month() && date1.year() == date2.year()

To check if it is in the future:

As suggested also by other users, the diff method works.

var isFuture = now.diff(anotherDate) < 0 

If you only need to know which one is bigger, you can also compare them directly:

var SpecialToDate = '31/01/2014'; // DD/MM/YYYY

var SpecialTo = moment(SpecialToDate, "DD/MM/YYYY");
if (moment() > SpecialTo) {
    alert('date is today or in future');
} else {
    alert('date is in the past');
}

Hope this helps!

function isTodayOrFuture(date){
  date = stripTime(date);
  return date.diff(stripTime(moment.now())) >= 0;
}

function stripTime(date){
  date = moment(date);
  date.hours(0);
  date.minutes(0);
  date.seconds(0);
  date.milliseconds(0);
  return date;
}

And then just use it line this :

isTodayOrFuture(YOUR_TEST_DATE_HERE)

Simplest answer will be:

const firstDate = moment('2020/10/14'); // the date to be checked
const secondDate = moment('2020/10/15'); // the date to be checked

firstDate.startOf('day').diff(secondDate.startOf('day'), 'days'); // result = -1
secondDate.startOf('day').diff(firstDate.startOf('day'), 'days'); // result = 1

It will check with the midnight value and will return an accurate result. It will work also when time diff between two dates is less than 24 hours also.

If we want difference without the time you can get the date different (only date without time) like below, using moment's format.

As, I was facing issue with the difference while doing ;

moment().diff([YOUR DATE])

So, came up with following;

const dateValidate = moment(moment().format('YYYY-MM-DD')).diff(moment([YOUR SELECTED DATE HERE]).format('YYYY-MM-DD'))

IF dateValidate > 0 
   //it's past day
else
   //it's current or future

Please feel free to comment if there's anything to improve on.

Thanks,

i wanted it for something else but eventually found a trick which you can try

somedate.calendar(compareDate, { sameDay: '[Today]'})=='Today'

var d = moment();_x000D_
 var today = moment();_x000D_
 _x000D_
 console.log("Usign today's date, is Date is Today? ",d.calendar(today, {_x000D_
    sameDay: '[Today]'})=='Today');_x000D_
    _x000D_
 var someRondomDate = moment("2012/07/13","YYYY/MM/DD");_x000D_
 _x000D_
 console.log("Usign Some Random Date, is Today ?",someRondomDate.calendar(today, {_x000D_
    sameDay: '[Today]'})=='Today');_x000D_
    _x000D_
  _x000D_
 var anotherRandomDate =  moment("2012/07/13","YYYY/MM/DD");_x000D_
 _x000D_
 console.log("Two Random Date are same date ? ",someRondomDate.calendar(anotherRandomDate, {_x000D_
    sameDay: '[Today]'})=='Today');

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