Get the first and last date of the previous month in JQuery

Question

I have this script,

 var today = new Date();
 var dd = today.getDate();
 var ddd = today.getDate()-1;
 var dddd = today.getDate()-2;

 var mm = today.getMonth()+1; //January is 0!
 var yyyy = today.getFullYear();
 if(dd<10){
   dd='0'+dd
 } 
 if(mm<10){
   mm='0'+mm
 } 
 if(ddd<10){
   ddd='0'+ddd
 } 

 var today = dd+'/'+mm+'/'+yyyy;
 var d2 = ddd+'/'+mm+'/'+yyyy;
 var d3 = dddd+'/'+mm+'/'+yyyy;

With this i obtain the last 3 days of the current day but in this case today is 02 if i rest two days i obtain 0 but i want in this case the last day of the previous month, how can do this?

Here is my fiddle

If you create three date objects, then subtract the number of milliseconds in a day (1000 * 60 * 60 * 24), you have a date that is yesterday, regardless of months, years, whatever. Now repeat three times — adeneo, Feb 03 '16 at 05:27
Already solved at this link http://stackoverflow.com/questions/10931288/how-to-add-subtract-dates-with-javascript — mmuzahid, Feb 03 '16 at 05:42
@adeneo that's not true for boundaries on daylight savings which are 23 or 25 hours — Patrick Roberts, Feb 03 '16 at 05:52
I provided you a working snippet with 4 lines of code that produces a result exactly the same as you desire. What else do you need? — Alexander Elgin, Feb 03 '16 at 06:47

Alexander Elgin · Accepted Answer · 2017-08-15T14:00:28.100

27

That's the first day of the current month new Date(now.getFullYear(), now.getMonth(), 1) to get the last day of the previous month create a date 1-day earlier: new Date(now.getFullYear(), now.getMonth(), 1 - 1).

To get the first day of the previous month we should substract 1 from the month component new Date(now.getFullYear(), now.getMonth() - 1, 1) but there is an issue if the current month is January (0) and the previous month is December (11). Hence I wrapped the month expression creating a cycle so it always returns a positiove value.

var now = new Date();
var prevMonthLastDate = new Date(now.getFullYear(), now.getMonth(), 0);
var prevMonthFirstDate = new Date(now.getFullYear() - (now.getMonth() > 0 ? 0 : 1), (now.getMonth() - 1 + 12) % 12, 1);

var formatDateComponent = function(dateComponent) {
  return (dateComponent < 10 ? '0' : '') + dateComponent;
};

var formatDate = function(date) {
  return formatDateComponent(date.getMonth() + 1) + '/' + formatDateComponent(date.getDate()) + '/' + date.getFullYear();
};

document.write(formatDate(prevMonthFirstDate) + ' - ' + formatDate(prevMonthLastDate));

edited Aug 15 '17 at 14:00

answered Feb 03 '16 at 05:36

Alexander Elgin

6,796
4
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50

Im sorry to answer to late, thanks for your suppor only have question, which number i need to change to obtain the previous month? i ask this be cause i always try your code's to understand – victor Feb 03 '16 at 07:06
@victor It is for the previous month. Have you run the code in the snippet? – Alexander Elgin Feb 03 '16 at 07:15
Im sorry, was my mistake, i change the date to march 2 to check the previous date, with your code how can convert numbers down of 10 like 01 02 03 04 05... in my code i have `if dd < 10 { dd = '0' + dd }` to change it – victor Feb 03 '16 at 07:22
@victor I don't understand what you are asking. Is it a new problem / question? – Alexander Elgin Feb 03 '16 at 07:30
no, is not an another question, is only about your result, if you check the date is like m/d/yyyy (1/1/2016) and i want to change the format of your date like mm/dd/yyyy (01/01/2016) – victor Feb 03 '16 at 07:36
@victor I guess I've understood you. You mean the date formatting with leading '0', right? Check the updated answer – Alexander Elgin Feb 03 '16 at 07:37
2

@AlexanderElgin unfortunately that doesn't work if the current month is January. If `now = 2016/01/05` then `prevMonthFirstDate = 2016/12/01` which is wrong. – AndyS Nov 15 '16 at 07:21
@AndyS Thanks for the report. I've fixed it. – Alexander Elgin Aug 15 '17 at 14:01

score 4 · Answer 2 · edited Nov 19 '19 at 11:48

4

You can do it like this

//one day previous  Date
var date = new Date();
date.setDate(date.getDate() - 1);
console.log(date.getDay());

//for previous month last date 
var date = new Date();
date.setDate(0);
console.log(date);

//for perivous Month First date
var date = new Date();
date.setDate(0);
date.setDate(1);
console.log(date);

edited Nov 19 '19 at 11:48

M.A.K. Ripon

2,070
3
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answered Feb 03 '16 at 05:39

Roli Agrawal

2,356
3
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28

The topic starter asked the PREVIOUS month first and last dates (not the previous day). – Alexander Elgin Feb 03 '16 at 05:49
@AlexanderElgin Thanks for suggestion i have edited it – Roli Agrawal Feb 03 '16 at 06:06
Thanks for your answer, but if i wrong, with your previous month last date i obtain only the firts month of the year, i change the current date to march 2 and i get january 31 and the correct date is feb 29 – victor Feb 03 '16 at 06:13
But when i am doing like this var date=new Date("March 2, 2016 01:00:00"); date.setDate(0); console.log(date); I am getting 29 feb only – Roli Agrawal Feb 03 '16 at 06:22

score 3 · Answer 3 · answered Feb 03 '16 at 05:38

3

Try using bellow

var date = new Date();
var monthStartDay = new Date(date.getFullYear(), date.getMonth(), 1);
var monthEndDay = new Date(date.getFullYear(), date.getMonth() + 1, 0);

answered Feb 03 '16 at 05:38

Sujithrao

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3
12
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The topic starter asked the PREVIOUS month (not the current one) first and last dates. – Alexander Elgin Feb 03 '16 at 05:48

Bhushan Kawadkar · Answer 4 · 2019-11-21T05:58:26.150

Try this: get today's date and set date to 1 which will get first of the current month. Then set hour to -1 which will shift it to previous months last day. Then set day to 1 to get first day of previous month.

var today = new Date();
var dd = today.getDate();

today.setDate(1); // going to 1st of the month
today.setHours(-1); // going to last hour before this date even started.
var lastDay = today.toLocaleDateString('en-GB', {  
                              year: 'numeric',
                              month: 'numeric',
                              day: 'numeric'
                          }).split(' ').join('-');

alert("last day of previous month " + lastDay);

today.setDate(1); // going to 1st of the previous month

var firstDay = today.toLocaleDateString('en-GB', {  
                              year: 'numeric',
                              month: 'numeric',
                              day: 'numeric'
                          }).split(' ').join('-');

alert("first day of previous month " + firstDay);

JSFiddle Demo

With your code how can obtain the date in this way dd/mm/yyyy, be cause with this i obtain a full date — victor, Feb 03 '16 at 05:41
please check my edited answer where I have formatted the date to desired format of dd/mm/yyyy. You can modify `toLocaleDateString` method as per your requirement. — Bhushan Kawadkar, Feb 03 '16 at 05:51

score 1 · Answer 5 · answered Feb 03 '16 at 05:46

What I have guessed is if current month is February then your output should be 1,31 because January's first day and last day is 1 and 31. So if that is the case then

var toDay = new Date();
var myDate = new Date(2016,toDay.getMonth()-1);
Fri Jan 01 2016 00:00:00 GMT+0530 (India Standard Time)

This will be assigned with the first day of the previous month.

Also, for the second case

var myDate = new Date(2016, toDay.getMonth());
myDate = new Date(myDate -1);
Sat Jan 31 2015 23:59:59 GMT+0530 (India Standard Time)

You can just use myDate to find whatever you want.

score 0 · Answer 6 · answered Feb 03 '16 at 05:40

A convenient trick to get the end of last month is the take current date and use setDate(0). Then use that that to create a new date object and setDate(1) for beginning of the month

var prevMonthEnd = new Date();
prevMonthEnd.setDate(0);
var beginLastMonth = new Date(prevMonthEnd);
beginLastMonth.setDate(1);


console.log([beginLastMonth.toString(), prevMonthEnd.toString()])

score 0 · Answer 7 · answered Feb 03 '16 at 06:43

0

    var firstDay = new Date();
    var secondDay = new Date();
    var thirdDay = new Date();


  //Now say you want to set secondDay as before 2 days

    secondDay.setDate(secondDay.getDate()-2);

//Now say you want to set thirdDay as after 2 days  

        thirdDay.setDate(thirdDay.getDate()+2);
        alert("firstDay: "+firstDay+", secondDay:"+secondDay+", thirdDay:"+thirdDay);
        alert("date of thirdDay: dd/mm/yyyy  "+thirdDay.getDate()+"/"+ (thirdDay.getMonth()+1) +"/"+thirdDay.getFullYear());

answered Feb 03 '16 at 06:43

zakaiter

439
3
11

Hope this is what you are looking for. Cheers!! – zakaiter Feb 03 '16 at 06:45
i create a confuse with answer to @Mytri, be cause he put a solution to my question but if you check he set a january and always obtain the same date like jan 31, but i want the last three days of the current date – victor Feb 03 '16 at 06:54
var today= new Date(); var firstDay = new Date(); var secondDay = new Date(); var thirdDay = new Date(); firstDay.setDate(firstDay.getDate()-1); secondDay.setDate(secondDate.getDate()-2); thirdDay.setDate(thirdDay.getDate()-3); This is the way of setting previous days or next days date – zakaiter Feb 03 '16 at 07:13

score 0 · Answer 8 · edited Apr 12 '22 at 09:43

I know many people have already answered it but I just figure out a 3 line solution so I thought I could share it in case anyone needs it.

let date = new Date();
let firstDay = new Date(date.getFullYear(), date.getMonth() - 1, 2);
let lastDay = new Date(date.getFullYear(), date.getMonth(), 1);
console.log(firstDay.toISOString(), lastDay.toISOString())

This solution works dynamically even if the current month is January, this method will auto-detect the previous year.

Example:

If the current date is: 2022-01-12

Previous month's first day: 2021-12-01

Previous month's last day: 2021-12-31

**Additionally you can set the time of both dates to 00:00:00 by using setUTCHours like this:

let date = new Date();
let firstDay = new Date(date.getFullYear(), date.getMonth() - 1, 2);
firstDay.setUTCHours(0,0,0,0);
let lastDay = new Date(date.getFullYear(), date.getMonth(), 1);
lastDay.setUTCHours(0,0,0,0);
console.log(firstDay.toISOString(), lastDay.toISOString())

Here's a working Fiddle example in case you need it.

score 0 · Answer 9 · answered Aug 24 '22 at 13:25

0

var mydate = new Date(2020,2,1); // march 1st 2020 leap year
var lastdate = new Date(mydate.getFullYear(),mydate.getMonth(),0);// get last date of prev month
var firstdate = new Date(lastdate.getFullYear(), lastdate.getMonth(), 1);//get first date using last date

alert('' + firstdate.toDateString() + '');
alert('' + lastdate.toDateString() + '');

answered Aug 24 '22 at 13:25

srinidhi

61
1

Your answer could be improved with additional supporting information. Please [edit] to add further details, such as citations or documentation, so that others can confirm that your answer is correct. You can find more information on how to write good answers [in the help center](/help/how-to-answer). – Community Aug 29 '22 at 07:17

Get the first and last date of the previous month in JQuery

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