Moment.js returns 1 as last day of month

Question

I'm trying to get the last day of the month as an integer. So for the month december 31 should be returned.

moment().endOf('month').day()

This will, however, return 1 - even though

moment().endOf('month').format('YYYY-MM-DD')

returns the correct date. Can someone explain why and how to get the actual day?

Answer 1

To get the day of the month, you have to use .date() instead. See the relevant part of the docs: http://momentjs.com/docs/#/get-set/date/

Answer 2

day() returns the day of the week, not the date

You want to use date() instead

Answer 3

moment().endOf('month').format('DD')

也

moment().endOf('month').date();

Answer 4

var lastDate = moment().endOf('month').format('DD') 

它返回日期，您可以将其解析为整数

Answer 5

As galchen said, day() returns the day of the week. To get the date, manipulate the string:

var lastDay = moment().endOf('month').format('YYYY-MM-DD').split('-')[2];