javascript - How to check if input date is equal to today's date? - Stack Overflow

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I have a form input with an id of 'date_trans'. The format for that date input (which is validated server side) can be any of:

• dd/mm/yyyy
• dd-mm-yyyy
• yyyy-mm-dd
• yyyy/mm/dd

However, before posting the form, I'd like to check if the date_trans field has a date that is equal to today's date. Its ok if the date taken is the client's date (i.e. it uses js), since I run a double check on the server as well.

I'm totally lost on how to do the date comparrison in jQuery or just plain old javascript. If it helps, I am using the jquery datepicker

I have a form input with an id of 'date_trans'. The format for that date input (which is validated server side) can be any of:

• dd/mm/yyyy
• dd-mm-yyyy
• yyyy-mm-dd
• yyyy/mm/dd

However, before posting the form, I'd like to check if the date_trans field has a date that is equal to today's date. Its ok if the date taken is the client's date (i.e. it uses js), since I run a double check on the server as well.

I'm totally lost on how to do the date comparrison in jQuery or just plain old javascript. If it helps, I am using the jquery datepicker

• javascript
• jquery

Share Improve this question Follow asked Nov 21, 2011 at 17:02 JonoBJonoB 5,8871717 gold badges5959 silver badges7777 bronze badges 4

• BTW, those are some silly date formats you're accepting. If you have any control over the decision to accept them, I'd suggest rethinking the usefulness/necessity of them all. – Phrogz Commented Nov 21, 2011 at 17:13
• What's silly about them? We operate in multiple countries, and they are accepted formats. I suppose that you think that everyone works on the (ridiculous) US format? – JonoB Commented Nov 21, 2011 at 20:52
• 2 Goodness, no! The US Format is appalling, but it's not present in your list and yet would be easily confused by your first case. If you are sure that all four are necessary, by all means use them. To me it seems like you have chosen to be both arbitrarily permissive and arbitrarily restrictive at the same time. shrug – Phrogz Commented Nov 21, 2011 at 21:04
• The US Format works just fine and has worked for many MANY years. – metal_jacke1 Commented Oct 21, 2020 at 17:56

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12 Answers 12

Sorted by: Reset to default 237

A simple date comparison in pure JS should be sufficient:

// Create date from input value
var inputDate = new Date("11/21/2011");

// Get today's date
var todaysDate = new Date();

// call setHours to take the time out of the comparison
if(inputDate.setHours(0,0,0,0) == todaysDate.setHours(0,0,0,0)) {
    // Date equals today's date
}

Here's a working JSFiddle.

For completeness, taken from this solution:

You could use toDateString:

const today = new Date()
const isToday = today.toDateString() === otherDate.toDateString()

No library dependencies, and looking cleaner than the setHours() approach shown in a previous answer, imho.

Try using moment.js

moment('dd/mm/yyyy').isSame(Date.now(), 'day');

You can replace 'day' string with 'year, month, minute' if you want.

function sameDay( d1, d2 ){
  return d1.getUTCFullYear() == d2.getUTCFullYear() &&
         d1.getUTCMonth() == d2.getUTCMonth() &&
         d1.getUTCDate() == d2.getUTCDate();
}

if (sameDay( new Date(userString), new Date)){
  // ...
}

Using the UTC* methods ensures that two equivalent days in different timezones matching the same global day are the same. (Not necessary if you're parsing both dates directly, but a good thing to think about.)

Just use the following code in your javaScript:

if(new Date(hireDate).getTime() > new Date().getTime())
{
//Date greater than today's date 
}

Change the condition according to your requirement.Here is one link for comparision compare in java script

The following solution compares the timestamp integer divided by the values of hours, minutes, seconds, millis.

var reducedToDay = function(date){return ~~(date.getTime()/(1000*60*60*24));};
return reducedToDay(date1) == reducedToDay(date2)

The tilde truncs the division result (see this article about integer division)

Try this

// method to check date is less than today date
  isLessDate(schedule_date : any){
    var _schedule_date = new Date(schedule_date);
    var date = new Date();
    var transformDate = this.datePipe.transform(date, 'yyyy-MM-dd');
    var _today_date = new Date(''+transformDate);
    if(_schedule_date < _today_date){
      return 'small'
    }
    else if(_schedule_date > _today_date){
      return 'big'
    }
    else {
      return 'same'
    }
  }

You can use this function to figure this one out (86_400_000 is milliseconds per a day).

function isSameDay(date1, date2) {
    return Math.abs(date1.getTime() - date2.getTime()) < 86_400_000
      && date1.getDate() === date2.getDate();
}

isSameDay(new Date("2011-11-21"), new Date("2011-11-21")); // true
isSameDay(new Date("2011-11-21"), new Date("2011-11-22")); // false

Date.js is a handy library for manipulating and formatting dates. It can help in this situation.

The Best way and recommended way of comparing date in typescript is:

var today = new Date().getTime();
var reqDateVar = new Date(somedate).getTime();

if(today === reqDateVar){
 // NOW
} else {
 // Some other time
}

TodayDate = new Date();
if (TodayDate > AnotherDate) {} else{}

< = also works, Although with =, it might have to match the milliseconds.

There is a simpler solution

if (inputDate.getDate() === todayDate.getDate()) {
   // do stuff
}

like that you don't loose the time attached to inputDate if any

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