.day() returns wrong day of month with Moment.js

Question

I am using Moment.js to parse a string and get the day, month and year separately:

var date = moment("12-25-1995", "MM-DD-YYYY");
var day = date.day();        

However, day is not 25—it's 1. What is the correct API method?

Mesentery

Answer 1

The correct function to use is .date():

date.date() === 25;

.day() gives you the day of the week. This works similarly to javascript's .getDate() and .getDay() functions on the date object.

If you want to get the month and year, you can use the .month() and .year() functions.

Boiler

date.month() returns 11 instead of 12. It always returns -1 the entered month. – Mesentery

@YaronLevi yeah, it's zero indexed. It talks about that in the documentation. The javascript date object does that too. – Boiler

Wow that's confusing. They should just make 'day' represent day and then have a separate one for 'dayOfMonth'. – Superiority

Answer 2

You can use moment().format('DD') to get the day of month.

var date = +moment("12-25-1995", "MM-DD-YYYY").format('DD'); 
// notice the `+` which will convert 
// the returned string to a number.

Good Luck...

Jehiel

Answer 3

This how to get parts of date:

var date = moment("12-25-1995", "MM-DD-YYYY");

if (date.isValid()) {

    day = date.date(); 
    console.log('day ' + day);

    month = date.month() + 1;
    console.log('month ' + month);

    year = date.year(); 
    console.log('year '+ urlDateMoment.year());

} else {
    console.log('Date is not valid! ');
}

Embrace

Answer 4

.day(), is getting the day number of the week which output values ( 1 - 7 ) starting from Monday.

If the day is

1. Monday will output 1
2. Tuesday will output 2
3. Wednesday will output 3
4. Thursday will output 4
5. Friday will output 5
6. Saturday will output 6
7. Sunday will output 7

To get the day of the month as @David mentioned, you need to use .date() Ex:

const today = moment().date()

Bought