How to get date with specific time in javascript - javascript

I am trying to fetch 1st and last date and time of current month and I have to convert to ISOString.
I tried below but when I am converting ISO its reducing 1 day and after removing it coming proper date .
I have to get 1st and last day of month with time ..
This is what I want to have:
start datetime 2022-12-01T00:00:00.000Z
end datetime 2022-12-31T23:59:59.000Z
Here is my code:
var date = new Date();
var firstDay = new Date(date.getFullYear(), date.getMonth(), 1);
var lastDay = new Date(date.getFullYear(), date.getMonth() + 1, 0);
console.log(firstDay.toISOString())
console.log(lastDay.toISOString())
console.log(firstDay)
console.log(lastDay)
Result:
// ISO string:
2022-11-30T18:30:00.000Z
2022-12-30T18:30:00.000Z
// without ISO string:
VM4876:4 Thu Dec 01 2022 00:00:00 GMT+0530 (India Standard Time)
VM4876:5 Sat Dec 31 2022 00:00:00 GMT+0530 (India Standard Time)


You can use Date.UTC() to help you construct a date instance at the specified UTC datetime:
var firstDay = new Date(Date.UTC(y, m, 1));
var lastDay = new Date(Date.UTC(y, m + 1, 0, 23, 59, 59, 0));
Your date instances will now log the expected UTC time:
console.log(firstDay.toISOString())
console.log(lastDay.toISOString())
2022-12-01T00:00:00.000Z
2022-12-31T23:59:59.000Z


let currentDate = new Date();
let cDay = currentDate.getDate();
let cMonth = currentDate.getMonth() + 1;
let cYear = currentDate.getFullYear();
console.log("<b>" + cDay + "/" + cMonth + "/" + cYear + "</b>");
thats how you get date and time in js
i got it from here : https://www.w3docs.com/snippets/javascript/how-to-get-the-current-date-and-time-in-javascript.html
you might want to go over on how to do it.

Related

why not get correctly date, (plus 1 day) in javascript? [duplicate]

This question already has answers here:
How to add days to Date?
(56 answers)
Incrementing a date in JavaScript
(19 answers)
How can I add 1 day to current date?
(10 answers)
Closed 12 months ago.
I am trying to get JavaScript to display tomorrows date in format (dd-mm-yyyy)
I have got this script which displays todays date in format (dd-mm-yyyy)
var currentDate = new Date()
var day = currentDate.getDate()
var month = currentDate.getMonth() + 1
var year = currentDate.getFullYear()
document.write("<b>" + day + "/" + month + "/" + year + "</b>")
Displays: 25/2/2012 (todays date of this post)
But how do I get it to display tomorrows date in the same format i.e. 26/2/2012
I tried this:
var day = currentDate.getDate() + 1
However I could keep +1 and go over 31 obviously there are not >32 days in a month
Been searching for hours but seems to be no answer or solution around this?

This should fix it up real nice for you.
If you pass the Date constructor a time it will do the rest of the work.
24 hours 60 minutes 60 seconds 1000 milliseconds
var currentDate = new Date(new Date().getTime() + 24 * 60 * 60 * 1000);
var day = currentDate.getDate()
var month = currentDate.getMonth() + 1
var year = currentDate.getFullYear()
document.write("<b>" + day + "/" + month + "/" + year + "</b>")
One thing to keep in mind is that this method will return the date exactly 24 hours from now, which can be inaccurate around daylight savings time.
Phil's answer work's anytime:
var currentDate = new Date();
currentDate.setDate(currentDate.getDate() + 1);
The reason I edited my post is because I myself created a bug which came to light during DST using my old method.

The JavaScript Date class handles this for you
var d = new Date(2012, 1, 29) // month is 0-based in the Date constructor
console.log(d.toLocaleDateString())
// Wed Feb 29 2012
d.setDate(d.getDate() + 1)
console.log(d.toLocaleDateString())
// Thu Mar 01 2012
console.log(d.getDate())
// 1

Method Date.prototype.setDate() accepts even arguments outside the standard range and changes the date accordingly.
function getTomorrow() {
const tomorrow = new Date();
tomorrow.setDate(tomorrow.getDate() + 1); // even 32 is acceptable
return `${tomorrow.getFullYear()}/${tomorrow.getMonth() + 1}/${tomorrow.getDate()}`;
}

Using JS only(Pure js)
Today
new Date()
//Tue Oct 06 2020 12:34:29 GMT+0530 (India Standard Time)
new Date(new Date().setHours(0, 0, 0, 0))
//Tue Oct 06 2020 00:00:00 GMT+0530 (India Standard Time)
new Date(new Date().setHours(0, 0, 0,0)).toLocaleDateString('fr-CA')
//"2020-10-06"
Tomorrow
new Date(+new Date() + 86400000);
//Wed Oct 07 2020 12:44:02 GMT+0530 (India Standard Time)
new Date(+new Date().setHours(0, 0, 0, 0) + 86400000);
//Wed Oct 07 2020 00:00:00 GMT+0530 (India Standard Time)
new Date(+new Date().setHours(0, 0, 0,0)+ 86400000).toLocaleDateString('fr-CA')
//"2020-10-07"
//don't forget the '+' before new Date()
Day after tomorrow
Just multiply by two ex:- 2*86400000
You can find all the locale shortcodes from https://stackoverflow.com/a/3191729/7877099

I would use the DateJS library. It can do exactly that.
http://www.datejs.com/
The do the following:
var d = new Date.today().addDays(1).toString("dd-mm-yyyy");
Date.today() - gives you today at midnight.

The below uses a combination of Roderick and Phil's answers with two extra conditionals that account for single digit months/days.
Many APIs I've worked with are picky about this, and require dates to have eight digits (eg '02022017'), instead of the 6 or 7 digits the date class is going to give you in some situations.
function nextDayDate() {
// get today's date then add one
var nextDay = new Date();
nextDay.setDate(nextDay.getDate() + 1);
var month = nextDay.getMonth() + 1;
var day = nextDay.getDate();
var year = nextDay.getFullYear();
if (month < 10) { month = "0" + month }
if (day < 10) { day = "0" + day }
return month + day + year;
}

Use cases :
Date.tomorrow() // 1 day next
Date.daysNext(1) // alternative Date.tomorrow()
Date.daysNext(2) // 2 days next.
IF "tomorrow " is not depend of today but of another Date different of Date.now(), Don't use static methods but rather you must use non-static :
i.e: Fri Dec 05 2008
var dec5_2008=new Date(Date.parse('2008/12/05'));
dec5_2008.tomorrow(); // 2008/12/06
dec5_2008.tomorrow().day // 6
dec5_2008.tomorrow().month // 12
dec5_2008.tomorrow().year //2008
dec5_2008.daysNext(1); // the same as previous
dec5_2008.daysNext(7) // next week :)
API :
Dateold=Date;function Date(e){var t=null;if(e){t=new Dateold(e)}else{t=new Dateold}t.day=t.getDate();t.month=t.getMonth()+1;t.year=t.getFullYear();return t}Date.prototype.daysNext=function(e){if(!e){e=0}return new Date(this.getTime()+24*60*60*1e3*e)};Date.prototype.daysAgo=function(e){if(!e){e=0}return Date.daysNext(-1*e)};Date.prototype.tomorrow=function(){return this.daysNext(1)};Date.prototype.yesterday=function(){return this.daysAgo(1)};Date.tomorrow=function(){return Date.daysNext(1)};Date.yesterday=function(){return Date.daysAgo(1)};Date.daysNext=function(e){if(!e){e=0}return new Date((new Date).getTime()+24*60*60*1e3*e)};Date.daysAgo=function(e){if(!e){e=0}return Date.daysNext(-1*e)}

Method 1: If you don't have problem in using other library, then this could work for you using moment.js
moment().add('days', 1).format('L');
Method 2: Using Date.js,
<script type="text/javascript" src="date.js"></script>
var tomorrow = new Date.today().addDays(1).toString("dd-mm-yyyy");
This method uses external library and not the native Date library.
As my bootstrap-datetimepicker was using moment.js and native date library, I preferred method 1. This question mentions these and some other methods.

Its really simple:
1: Create date object with today' date and time.
2: Use date object methods to retrieve day, month and full year and concatenate them using the + operator.
Sample Code:
var my_date = new Date();
var tomorrow_date = (my_date.getDate() + 1) + "-" + (my_date.getMonth() + 1) + "-" + my_date.getFullYear();
document.write(tomorrow_date);

function getMonday(d)
{
// var day = d.getDay();
var day = #Config.WeekStartOn
diff = d.getDate() - day + (day == 0 ? -6 : 0);
return new Date(d.setDate(diff));
}

The same as the original answer, but in one line:
var tomorrow = new Date(Date.now() + 24 * 60 * 60 * 1000)
The numbers stand for 24 hours 60 minutes 60 seconds 1000 milliseconds.

you can try this:
function Tomorrow(date=false) {
var givendate = (date!=false) ? new Date(date) : new Date();
givendate.setDate(givendate.getDate() + 1);
var day = givendate.getUTCDate()
var month = givendate.getUTCMonth()+1
var year = givendate.getUTCFullYear()
result ="<b>" + day + "/" + month + "/" + year + "</b>";
return result;
}
var day = Tomorrow('2020-06-30');
console.log('tomorrows1: '+Tomorrow('2020-06-30'));
console.log('tomorrows2: '+Tomorrow());

//to get date of tomorrow
let tomorrow=new Date(`${(new Date()).getFullYear()}-${(new Date()).getMonth()+1}-${(new Date()).getDate()+1}`);
//for dd-mm-yy format
tomorrow=`${tomorrow.getDate()}-${tomorrow.getMonth()+1}-${((tomorrow.getFullYear()).toString()).slice(-2)}`;
document.write(tomorrow)

//-----------Date Configuration march 18,2014----------------------
//alert(DateFilter);
var date = new Date();
y = date.getFullYear(), m = date.getMonth();
var EndDate = new Date();
switch (DateFilter) {
case 'today': var StartDate = EndDate; //todays date
break;
case 'yesterday':
var d = new Date();
var previousDate = new Date(d.getTime() - 1000 * 60 * 60 * 24);
var StartDate = new Date(previousDate.yyyymmdd()); //yesterday Date
break;
case 'tomorrow':
var d = new Date();
var NextDate = new Date(d.getTime() + 1000 * 60 * 60 * 24);
var StartDate = new Date(NextDate.yyyymmdd()); //tomorrow Date
break;
case 'thisweek': var StartDate = getMonday(new Date()); //1st date of this week
break;
case 'thismonth': var StartDate = new Date(y, m, 1); //1st date of this month
break;
case 'thisyear': var StartDate = new Date("01/01/" + date.getFullYear()); //1st date of this year
break;
case 'custom': //var StartDate = $("#txtFromDate").val();
break;
default:
var d = new Date();
var StartDate = new Date(d.getTime() - 30 * 24 * 60 * 60 * 1000); //one month ago date from now.
}
if (DateFilter != "custom") {
var SDate = $.datepicker.formatDate('#Config.DateFormat', StartDate); $("#txtFromDate").val(SDate);
var EDate = $.datepicker.formatDate('#Config.DateFormat', EndDate); $("#txtToDate").val(EDate);
}
//-----------Date Configuration march 18,2014----------------------

var curDate = new Date().toLocaleString().split(',')[0];
Simply! in dd.mm.yyyy format.

Date.prototype.NextDay = function (e) {
return new Date(this.getFullYear(), this.getMonth(), this.getDate() + ("string" == typeof e ? parseInt(e, 10) : e));
}
// tomorrow
console.log(new Date().NextDay(1))
// day after tomorrow
console.log(new Date().NextDay(2))

How to get last month date from selected date in asp.net c#

selected date is (txtfromdate) : Dec 01 2016
to date:(txttodate): Dec 31 2016
how to calculate Dec 31 2016 from Dec 01 2016 in c# or javascript.

DateTime firstOfDecember = new DateTime(2016, 12, 1);
int lastDay = DateTime.DaysInMonth(firstOfDecember.Year, firstOfDecember.Month);
If you want to create DateTime object equivalent to last day of the month:
DateTime lastOfDecember = new DateTime(firstOfDecember.Year, firstOfDecember.Month, lastDay);
Use DaysInMonth method of DateTime: DateTime.DaysInMonth Method (Int32, Int32)

In C# you can use DaysInMonth
DateTime endOfMonth = new DateTime (year, month,DateTime.DaysInMonth(year, month));

By Using JQuery
var selectedData = txtfromdate;
var date = new Date(selectedData);
var lastDay = new Date(date.getFullYear(), date.getMonth() + 1, 0);
So, In lastDay variable has result.
By Using C#
DateTime now = new Date(txtfromdate);
var startDate = new DateTime(now.Year, now.Month, 1);
var endDate = startDate.AddMonths(1).AddDays(-1);
In endDate variable has lastDate.

Add A Year To Today's Date

I am trying to add a year to todays date. I am working in a system that does not allow you to use standard JavaScript.
For instance, to get todays date I have to use:
javascript:now();
I have tried:
javascript:now(+1);
I have never seen this before, but am in need of adding one year to todays date...
Has anyone seen getting current date this way before? And if so, how could I add a year?

Use the Date.prototype.setFullYear method to set the year to what you want it to be.
For example:
const aYearFromNow = new Date();
aYearFromNow.setFullYear(aYearFromNow.getFullYear() + 1);
console.log(aYearFromNow);
There really isn't another way to work with dates in JavaScript if these methods aren't present in the environment you are working with.

You can create a new date object with todays date using the following code:
var d = new Date();
console.log(d);
// => Sun Oct 11 2015 14:46:51 GMT-0700 (PDT)
If you want to create a date a specific time, you can pass the new Date constructor arguments
var d = new Date(2014);
console.log(d)
// => Wed Dec 31 1969 16:00:02 GMT-0800 (PST)
If you want to take todays date and add a year, you can first create a date object, access the relevant properties, and then use them to create a new date object
var d = new Date();
var year = d.getFullYear();
var month = d.getMonth();
var day = d.getDate();
var c = new Date(year + 1, month, day);
console.log(c);
// => Tue Oct 11 2016 00:00:00 GMT-0700 (PDT)
You can read more about the methods on the date object on MDN
Date Object

One liner as suggested here
How to determine one year from now in Javascript
by JP DeVries
new Date(new Date().setFullYear(new Date().getFullYear() + 1))
Or you can get the number of years from somewhere in a variable:
const nr_years = 3;
new Date(new Date().setFullYear(new Date().getFullYear() + nr_years))

This code adds the amount of years required for a date.
var d = new Date();
// => Tue Oct 01 2017 00:00:00 GMT-0700 (PDT)
var amountOfYearsRequired = 2;
d.setFullYear(d.getFullYear() + amountOfYearsRequired);
// => Tue Oct 01 2019 00:00:00 GMT-0700 (PDT)

I like to keep it in a single line, you can use a self calling function for this eg:
If you want to get the timestamp of +1 year in a single line
console.log(
(d => d.setFullYear(d.getFullYear() + 1))(new Date)
)
If you want to get Date object with single line
console.log(
(d => new Date(d.getFullYear() + 1, d.getMonth(), d.getDate()))(new Date)
)

In Angular, This is how you Calculate Date
today = new Date();
year = this.today.getFullYear();
month = this.today.getMonth();
day = this.today.getDate();
//To go 18 years back
yearsBack18= new Date(this.year - 18, this.month, this.day);
//To go to same day next year
nextYear= new Date(this.year + 1, this.month, this.day);

var d = new Date();
var year = d.getFullYear();
var month = d.getMonth();
var day = d.getDate();
var fulldate = new Date(year + 1, month, day);
var toDate = fulldate.toISOString().slice(0, 10);
$("#txtToDate").val(toDate);
output : 2020-01-02

//This piece of code will handle the leap year addition as well.
function updateExpiryDate(controlID, value) {
if ( $("#ICMEffectiveDate").val() != '' &&
$("#ICMTermYears").val() != '') {
var effectiveDate = $("#ICMEffectiveDate").val();
var date = new Date(effectiveDate);
var termYears = $("#ICMTermYears").val();
date = new Date(date.setYear(date.getFullYear() + parseInt(termYears)));
var expiryDate = (date.getMonth() + 1) + '/' + date.getDate() + '/' + date.getFullYear();
$('#ICMExpiryDate').val(expiryDate);
}
}

var yearsToAdd = 5;
var current = new Date().toISOString().split('T')[0];
var addedYears = Number(this.minDate.split('-')[0]) + yearsToAdd + '-12-31';

What's wrong on adding Days at this Date function?

This is my code:
var dat = new Date("24/03/2013");
dat.setDate(dat.getDate() + 7);
console.log(dat)
but it print Tue Jan 06 2015 00:00:00 GMT+0100?
The date is wrong: should be 31/03/2013 (and I'd like to print it in this format).

My browser (Chrome) prints "Invalid date", but apparently yours interprets the initializing date in mm/dd/yyyy format instead of dd/mm/yyyy. Therefore it thinks it's the 3rd day of the 24th month of 2013, which is January 3rd, 2015.
I'm not sure why it would print it as January 6th if you add 7 days to it.
The safest way is to give the numbers explicitly:
var dat = new Date( 2013, 2, 24 );

Change the format of your date to put the day after the month:
var dat = new Date("03/24/2013");
dat.setDate(dat.getDate() + 7);
console.log(dat)
For me this returns:
Sun Mar 31 2013 00:00:00 GMT+0000 (GMT Standard Time)

You should have to give the month number first. Then you'll get the correct answer
Try this code
var dat = new Date("03/24/2013");
dat.setDate(dat.getDate() + 7);
var curr_date = dat.getDate();
var curr_month = dat.getMonth() + 1; //Months are zero based
var curr_year = dat.getFullYear();
console.log(curr_date + "/" + curr_month + "/" + curr_year);

You should print out your date before you add seven. I suspect it's being set to the 3rd day of the 24th month in 2013, which equates to somewhere close to January 2015.
That's why you're getting a date well advanced from the current one. Why it's giving you the 6th of January rather than the 10th, I'm not sure, but you can probably fix it just by changing your input string to the US format of mm/dd/yyyy, or using a more explicit constructor that's not subject to misinterpretation:
var d = new Date(year, month, day, hours, minutes, seconds, milliseconds);

try this!!!
var aDate = new Date(2013,3,24);
aDate.setDate(aDate.getDate() + 7);
var dateString = aDate.getDate() + "-" + aDate.getMonth() + "-" + aDate.getFullYear();
alert(dateString);

JavaScript how to get tomorrows date in format dd-mm-yy [duplicate]

This question already has answers here:
How to add days to Date?
(56 answers)
Incrementing a date in JavaScript
(19 answers)
How can I add 1 day to current date?
(10 answers)
Closed 12 months ago.
I am trying to get JavaScript to display tomorrows date in format (dd-mm-yyyy)
I have got this script which displays todays date in format (dd-mm-yyyy)
var currentDate = new Date()
var day = currentDate.getDate()
var month = currentDate.getMonth() + 1
var year = currentDate.getFullYear()
document.write("<b>" + day + "/" + month + "/" + year + "</b>")
Displays: 25/2/2012 (todays date of this post)
But how do I get it to display tomorrows date in the same format i.e. 26/2/2012
I tried this:
var day = currentDate.getDate() + 1
However I could keep +1 and go over 31 obviously there are not >32 days in a month
Been searching for hours but seems to be no answer or solution around this?

This should fix it up real nice for you.
If you pass the Date constructor a time it will do the rest of the work.
24 hours 60 minutes 60 seconds 1000 milliseconds
var currentDate = new Date(new Date().getTime() + 24 * 60 * 60 * 1000);
var day = currentDate.getDate()
var month = currentDate.getMonth() + 1
var year = currentDate.getFullYear()
document.write("<b>" + day + "/" + month + "/" + year + "</b>")
One thing to keep in mind is that this method will return the date exactly 24 hours from now, which can be inaccurate around daylight savings time.
Phil's answer work's anytime:
var currentDate = new Date();
currentDate.setDate(currentDate.getDate() + 1);
The reason I edited my post is because I myself created a bug which came to light during DST using my old method.

The JavaScript Date class handles this for you
var d = new Date(2012, 1, 29) // month is 0-based in the Date constructor
console.log(d.toLocaleDateString())
// Wed Feb 29 2012
d.setDate(d.getDate() + 1)
console.log(d.toLocaleDateString())
// Thu Mar 01 2012
console.log(d.getDate())
// 1

Method Date.prototype.setDate() accepts even arguments outside the standard range and changes the date accordingly.
function getTomorrow() {
const tomorrow = new Date();
tomorrow.setDate(tomorrow.getDate() + 1); // even 32 is acceptable
return `${tomorrow.getFullYear()}/${tomorrow.getMonth() + 1}/${tomorrow.getDate()}`;
}

Using JS only(Pure js)
Today
new Date()
//Tue Oct 06 2020 12:34:29 GMT+0530 (India Standard Time)
new Date(new Date().setHours(0, 0, 0, 0))
//Tue Oct 06 2020 00:00:00 GMT+0530 (India Standard Time)
new Date(new Date().setHours(0, 0, 0,0)).toLocaleDateString('fr-CA')
//"2020-10-06"
Tomorrow
new Date(+new Date() + 86400000);
//Wed Oct 07 2020 12:44:02 GMT+0530 (India Standard Time)
new Date(+new Date().setHours(0, 0, 0, 0) + 86400000);
//Wed Oct 07 2020 00:00:00 GMT+0530 (India Standard Time)
new Date(+new Date().setHours(0, 0, 0,0)+ 86400000).toLocaleDateString('fr-CA')
//"2020-10-07"
//don't forget the '+' before new Date()
Day after tomorrow
Just multiply by two ex:- 2*86400000
You can find all the locale shortcodes from https://stackoverflow.com/a/3191729/7877099

I would use the DateJS library. It can do exactly that.
http://www.datejs.com/
The do the following:
var d = new Date.today().addDays(1).toString("dd-mm-yyyy");
Date.today() - gives you today at midnight.

The below uses a combination of Roderick and Phil's answers with two extra conditionals that account for single digit months/days.
Many APIs I've worked with are picky about this, and require dates to have eight digits (eg '02022017'), instead of the 6 or 7 digits the date class is going to give you in some situations.
function nextDayDate() {
// get today's date then add one
var nextDay = new Date();
nextDay.setDate(nextDay.getDate() + 1);
var month = nextDay.getMonth() + 1;
var day = nextDay.getDate();
var year = nextDay.getFullYear();
if (month < 10) { month = "0" + month }
if (day < 10) { day = "0" + day }
return month + day + year;
}

Use cases :
Date.tomorrow() // 1 day next
Date.daysNext(1) // alternative Date.tomorrow()
Date.daysNext(2) // 2 days next.
IF "tomorrow " is not depend of today but of another Date different of Date.now(), Don't use static methods but rather you must use non-static :
i.e: Fri Dec 05 2008
var dec5_2008=new Date(Date.parse('2008/12/05'));
dec5_2008.tomorrow(); // 2008/12/06
dec5_2008.tomorrow().day // 6
dec5_2008.tomorrow().month // 12
dec5_2008.tomorrow().year //2008
dec5_2008.daysNext(1); // the same as previous
dec5_2008.daysNext(7) // next week :)
API :
Dateold=Date;function Date(e){var t=null;if(e){t=new Dateold(e)}else{t=new Dateold}t.day=t.getDate();t.month=t.getMonth()+1;t.year=t.getFullYear();return t}Date.prototype.daysNext=function(e){if(!e){e=0}return new Date(this.getTime()+24*60*60*1e3*e)};Date.prototype.daysAgo=function(e){if(!e){e=0}return Date.daysNext(-1*e)};Date.prototype.tomorrow=function(){return this.daysNext(1)};Date.prototype.yesterday=function(){return this.daysAgo(1)};Date.tomorrow=function(){return Date.daysNext(1)};Date.yesterday=function(){return Date.daysAgo(1)};Date.daysNext=function(e){if(!e){e=0}return new Date((new Date).getTime()+24*60*60*1e3*e)};Date.daysAgo=function(e){if(!e){e=0}return Date.daysNext(-1*e)}

Method 1: If you don't have problem in using other library, then this could work for you using moment.js
moment().add('days', 1).format('L');
Method 2: Using Date.js,
<script type="text/javascript" src="date.js"></script>
var tomorrow = new Date.today().addDays(1).toString("dd-mm-yyyy");
This method uses external library and not the native Date library.
As my bootstrap-datetimepicker was using moment.js and native date library, I preferred method 1. This question mentions these and some other methods.

Its really simple:
1: Create date object with today' date and time.
2: Use date object methods to retrieve day, month and full year and concatenate them using the + operator.
Sample Code:
var my_date = new Date();
var tomorrow_date = (my_date.getDate() + 1) + "-" + (my_date.getMonth() + 1) + "-" + my_date.getFullYear();
document.write(tomorrow_date);

function getMonday(d)
{
// var day = d.getDay();
var day = #Config.WeekStartOn
diff = d.getDate() - day + (day == 0 ? -6 : 0);
return new Date(d.setDate(diff));
}

The same as the original answer, but in one line:
var tomorrow = new Date(Date.now() + 24 * 60 * 60 * 1000)
The numbers stand for 24 hours 60 minutes 60 seconds 1000 milliseconds.

you can try this:
function Tomorrow(date=false) {
var givendate = (date!=false) ? new Date(date) : new Date();
givendate.setDate(givendate.getDate() + 1);
var day = givendate.getUTCDate()
var month = givendate.getUTCMonth()+1
var year = givendate.getUTCFullYear()
result ="<b>" + day + "/" + month + "/" + year + "</b>";
return result;
}
var day = Tomorrow('2020-06-30');
console.log('tomorrows1: '+Tomorrow('2020-06-30'));
console.log('tomorrows2: '+Tomorrow());

//to get date of tomorrow
let tomorrow=new Date(`${(new Date()).getFullYear()}-${(new Date()).getMonth()+1}-${(new Date()).getDate()+1}`);
//for dd-mm-yy format
tomorrow=`${tomorrow.getDate()}-${tomorrow.getMonth()+1}-${((tomorrow.getFullYear()).toString()).slice(-2)}`;
document.write(tomorrow)

//-----------Date Configuration march 18,2014----------------------
//alert(DateFilter);
var date = new Date();
y = date.getFullYear(), m = date.getMonth();
var EndDate = new Date();
switch (DateFilter) {
case 'today': var StartDate = EndDate; //todays date
break;
case 'yesterday':
var d = new Date();
var previousDate = new Date(d.getTime() - 1000 * 60 * 60 * 24);
var StartDate = new Date(previousDate.yyyymmdd()); //yesterday Date
break;
case 'tomorrow':
var d = new Date();
var NextDate = new Date(d.getTime() + 1000 * 60 * 60 * 24);
var StartDate = new Date(NextDate.yyyymmdd()); //tomorrow Date
break;
case 'thisweek': var StartDate = getMonday(new Date()); //1st date of this week
break;
case 'thismonth': var StartDate = new Date(y, m, 1); //1st date of this month
break;
case 'thisyear': var StartDate = new Date("01/01/" + date.getFullYear()); //1st date of this year
break;
case 'custom': //var StartDate = $("#txtFromDate").val();
break;
default:
var d = new Date();
var StartDate = new Date(d.getTime() - 30 * 24 * 60 * 60 * 1000); //one month ago date from now.
}
if (DateFilter != "custom") {
var SDate = $.datepicker.formatDate('#Config.DateFormat', StartDate); $("#txtFromDate").val(SDate);
var EDate = $.datepicker.formatDate('#Config.DateFormat', EndDate); $("#txtToDate").val(EDate);
}
//-----------Date Configuration march 18,2014----------------------

var curDate = new Date().toLocaleString().split(',')[0];
Simply! in dd.mm.yyyy format.

Date.prototype.NextDay = function (e) {
return new Date(this.getFullYear(), this.getMonth(), this.getDate() + ("string" == typeof e ? parseInt(e, 10) : e));
}
// tomorrow
console.log(new Date().NextDay(1))
// day after tomorrow
console.log(new Date().NextDay(2))

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