how to age and month from date

C# Corner

Reylin Mathew

5y808

Age calculation

DOB = 2010-07-01(July)

DATE = 2026-08-01 (August)

correct age is = 15 yrs 11 mnths

but this code returns = 16 yr 1 mnt..

my code attached also,

var age = retoday.getFullYear() - dob.getFullYear();
var mnth = 0;
if (today.getMonth() == 0) {
mnth = (today.getMonth() + 1) - dob.getMonth();
}
else
tmnth = today.getMonth() - dob.getMonth();
if (tmnth < 0 || (retmnth == 0 && (today.getDate() < dob.getDate()))) {
tage--;
}

plz hlp me...thnkx in adv

2 Replies

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Sachin Singh5y ago
Before doubting the Logic, have you did the common real-life calculation its simply 16 years 1 month.
Your code is correct.
for calculating DOB, we first subtract the daypart then month part, and then the year part,

example:-
18-07-2021 (borrowed 1 month(30+18) then borrowed 1year (12+6=18) year left=2020)
- 21-11-1995
_____________
27- 07-25
Vikas Jha5y ago
I think your code is returning correct value . I tried same and got the same value .
var dob = "07/01/2010"; debugger;
var dobTill = "08/01/2026";
var nextDate = new Date(dobTill);
    var birthDate = new Date(dob);
    var age = nextDate.getFullYear() - birthDate.getFullYear();
    var m = nextDate.getMonth() - birthDate.getMonth();
    if (m < 0 || (m === 0 && nextDate.getDate() < birthDate.getDate())) {
        age--;
    }
Then I tried as above image and it gave me same result. Please let me know if solved your issue.