MomentJS - How to get last day of previous month from date?

Question

I'm trying to get last day of the previous month using:

 var dateFrom = moment(dateFrom).subtract(1, 'months').format('YYYY-MM-DD'); 

Where:

dateFrom = 2014-11-30  

But after using

subtract(1, 'months') 

it returns date

DATE_FROM: "2014-10-30" 

But last day of the 10'th month is 31.

How can I solve i please?

Many thanks for any help.

Answer 1

Simply add a endOf('month') to your calls:

var dateFrom = moment(dateFrom).subtract(1,'months').endOf('month').format('YYYY-MM-DD');

http://jsfiddle.net/r42jg/327/

Answer 2

An even easier solution would be to use moment.date(0). the .date() function takes the 1 to n day of the current month, however, passing a zero or negative number will yield a dates in the previous month.

For example if current date is February 3rd:

var _date = moment(); // 2018-02-03 (current day)  var _date2 = moment().date(0) // 2018-01-31 (start of current month minus 1 day)  var _date3 = moment().date(4) // 2018-02-04 (4th day of current month)  var _date4 = moment().date(-4) // 2018-01-27 (start of current month minus 5 days)    console.log(_date.format("YYYY-MM-DD"));  console.log(_date2.format("YYYY-MM-DD"));  console.log(_date3.format("YYYY-MM-DD"));  console.log(_date4.format("YYYY-MM-DD"));

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