get number of days in the CURRENT month using javascript

Question

For my website I am trying to get the number of days for the CURRENT month for a certain feature.

I have seen examples online that get days of a specified month, however I need to get the days of the CURRENT month and find how many days are left of that month.

Here is the code I managed to put together:

function myFunction() {
    var today = new Date();
    var month = today.getMonth();
    console.log(month);
}

myFunction();

So, use the example online, and pass the current month to it...? — Heretic Monkey, Jul 18 '16 at 22:10
Possible duplicate of [What is the best way to determine the number of days in a month with javascript?](http://stackoverflow.com/questions/315760/what-is-the-best-way-to-determine-the-number-of-days-in-a-month-with-javascript) — Heretic Monkey, Jul 18 '16 at 22:10
And what exactly isn’t working with this code? Your code only gets the current month. Use it with whatever function you found that gets the number of days. — Sebastian Simon, Jul 18 '16 at 22:11

score 52 · Accepted Answer · answered Jul 18 '16 at 22:11

52

Does this do what you want?

function daysInThisMonth() {
  var now = new Date();
  return new Date(now.getFullYear(), now.getMonth()+1, 0).getDate();
}

answered Jul 18 '16 at 22:11

user94559

59,196
6
103
103

so how would i edit this to make it functional showing the days in the month? – Khan Jul 18 '16 at 23:05
I'm not sure what you mean. This function returns the number of days in the current month. – user94559 Jul 18 '16 at 23:09
Maybe you need help logging it? E.g. `console.log(daysInThisMonth());`? – user94559 Jul 18 '16 at 23:10
sorry let me reword it, I need to find the days remaining of the current month. – Khan Jul 18 '16 at 23:10
1

Oh, that would be `daysInThisMonth() - (new Date()).getDate()`. – user94559 Jul 18 '16 at 23:11
thank you so much this worked perfectly! being a newbie and having great help is hard to come by thank you – Khan Jul 18 '16 at 23:14
Can you please explain in brief the working behind this? – program_bumble_bee Jun 29 '19 at 05:25
@bubble-cord new Date(2019, 7, 0): 0 => gives u the Date of the last day of the month (Wed Jul 31 2019). Then Date(2019, 7, 0).getDate(); returns you the day of that Date as integer (31). – egidiocs Jul 21 '19 at 20:48
@bubble-cord mdn rocks: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date – egidiocs Jul 21 '19 at 20:51

score 3 · Answer 2 · edited May 23 '17 at 12:17

3

based on the answer from this post: What is the best way to determine the number of days in a month with javascript?

It should be easy to modify this to work for the current month Here's your code and the function from the other post:

function myFunction() {
    var today = new Date();
    var month = today.getMonth();
    console.log(daysInMonth(month + 1, today.getFullYear()))
}

function daysInMonth(month,year) {
  return new Date(year, month, 0).getDate();
}

myFunction();

Note that the function date.getMonth() returns a zero-based number, so just add 1 to normalize.

edited May 23 '17 at 12:17

Community

1
1

answered Jul 18 '16 at 22:18

Peter

1,361
15
19

this is exactly what I was looking for thank you. any idea how to figure out how many days left in the current month? – Khan Jul 18 '16 at 22:39
Sure. Check out https://jsfiddle.net/8023vhfs/ Tell me if it helped you. – Peter Jul 20 '16 at 13:51

score 0 · Answer 3 · answered Mar 22 '23 at 06:47

0

Get number of day's in current month: single line of code.

var daysInCurrentMonth=new Date(new Date().getFullYear(), new Date().getMonth() + 1, 0).getDate()
console.log(daysInCurrentMonth);

answered Mar 22 '23 at 06:47

Bhanu Pratap

1,635
17
17

score -1 · Answer 4 · answered Sep 01 '20 at 05:28

-1

var numberOfDaysOnMonth = function() {
    let h = new Date()
    h.setMonth(h.getMonth() + 1)
    h.setDate(h.getDate() - 1)
    return h.getDate()
};

answered Sep 01 '20 at 05:28

ariel_556

368
1
9

get number of days in the CURRENT month using javascript

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