Posts Tagged ‘age’

Wednesday, April 16th, 2008

I had to implement a get age method for something we were working on. I was surprised to not find an AS3 version easily, so busted one out. I thought maybe this would be in as3corelib but nope. So posting this in case anyone else is looking for a get age script in AS3. It was quick so any improvements just post them. It will be added to my utilities classes on google code soon it is in quick form so you can jsut plop in an .fla or a class.

The pseudo code is the same for getting age in any language. Get current date, get birthdate to compare. Subtract the current years from the birthday years, then subtract one more year if the day or month is less than today’s day and month.

function calculateAge(birthdate:Date):Number {
    var dtNow:Date = new Date();// gets current date
    var currentMonth:Number = dtNow.getMonth();
    var currentDay:Number = dtNow.getDay();
    var currentYear:Number = dtNow.getFullYear();

    var bdMonth:Number = birthdate.getMonth();
    var bdDay:Number = birthdate.getDay();
    var bdYear:Number = birthdate.getFullYear();

    // get the difference in years
    var years:Number = dtNow.getFullYear() - birthdate.getFullYear();
    // subtract another year if we're before the
    // birth day in the current year
    if (currentMonth < bdMonth || (currentMonth == bdMonth && currentDay < bdDay)) {
    return years;

function dateStringToObject(dateString):Date {
    var date_ar = dateString.split("/");
    return new Date(date_ar[2],date_ar[0] - 1,date_ar[1]);

var dateNow:Date = new Date();
var checkDate:String = "11/25/1976";
var dateBirthday:Date = dateStringToObject(checkDate);
trace("dateNow = "+dateNow);
trace("dateBirthday = "+dateBirthday);
trace("age = "+calculateAge(dateBirthday));