coverting primitive date into the the month

I have the primitive date that I am calculating the by dividing by this formula 1000 * 60 * 60 * 24 * 365.25 so this will give me age of the person. Now I also want to get a month from this primitive date
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erikTsomikSystem Architect, CF programmer Asked:
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leakim971PluritechnicianCommented:
Now I also want to get a month from this primitive date

store the number of year in a variable : yearAge
use :

function calcage() {
				var vdob = new Date(document.getElementById("dateofbirth").value);				
				var vcurrentTime = new Date();
				var vyear = vcurrentTime.getFullYear();
				var ageInMilliseconds = vcurrentTime.getTime() - vdob.getTime();
                                var ageInYear = Math.floor(ageInMilliseconds / (1000 * 60 * 60 * 24 * 365.25));
                                var ageInYearMillisecond = ageInYear * 1000 * 60 * 60 * 24 * 365.25
                                var months = Math.floor((ageInMilliseconds - ageInYearMillisecond)/(1000 * 60 * 60 * 24 * 29.5));
				document.getElementById("age").value = ageInYear + ' years' + " and " + months;
	}

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erikTsomikSystem Architect, CF programmer Author Commented:
I tried but the formula does not. FOr example the persons birthday is on 3/24/1999 so today he is exactly 15 years 9 month old, if I shift the date to 3/25/1998 then it is still shows me 15 years and 6 month event though his 15 years and 9 month will be tomorrow
leakim971PluritechnicianCommented:
born in march to september 9 - 3 = 6
erikTsomikSystem Architect, CF programmer Author Commented:
different case when 15 years and 6 month

I will also have a rule for 16 years sharp
leakim971PluritechnicianCommented:
if you change the rules, change the code

the question was about having the month using your formula :
Now I also want to get a month from this primitive date

line 8 you've the month :
var months = Ma...

what else?
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