Checking if a day is the same day (but not year) with momentjs

Question

I'm using momentjs to determine wether or not a date is a persons birthday. But for some reason moment always returns false and I'm not sure why.

Used code

moment(dateObject).isSame(moment(otherDateObject), 'day')

What is returned when logging the individual dates and the isSame()

Any ideas on what the issue is here? As you can see the only difference in the 2 moment instances is the year.

From momentjs

Passing in day will check day, month, and year

So how do I check if it is the matching day and month then?

Answer 1

If you want to check only day of the month and the month, you can write your own function using date() and month() getters.

Here a sample:

var m1 = moment('2017-01-25');
var m2 = moment('2015-02-25');
var m3 = moment('2015-02-25');

function isSameDayAndMonth(m1, m2){
  return m1.date() === m2 .date() && m1.month() === m2.month()
}

console.log( isSameDayAndMonth(m1, m2) );
console.log( isSameDayAndMonth(m1, m3) );
console.log( isSameDayAndMonth(m2, m3) );

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