What is the best way to calculate Age using Flex?

What is the best way to calculate Age using Flex?

From stackoverflow

• I found an Answer at the bottom of this page in comments section

  Repeated here for posterity (should the original comment be lost)

  jpwrunyan said on Apr 30, 2007 at 10:10 PM :

  By the way, here is how to calculate age in years (only) from DOB without needing to account for leap years:

  private function getYearsOld(dob:Date):uint {
var now:Date = new Date();
var yearsOld:uint = Number(now.fullYear) - Number(dob.fullYear);
if (dob.month >= now.month && dob.date >= now.date) {
yearsOld--;
}
return yearsOld;
}

  This handles most situations where you need to calculate age.

• You could also do it roughly the same as discussed here: (translated to AS3)

  var age:int = (new Date()).fullYear - bDay.fullYear;
  if ((new Date()) < (new Date((bDay.fullYear + age), bDay.month, bDay.date))) age--;
  

• Here is a little more complex calculation, this calculates age in years and months. Example: User is 3 years 2 months old.

  private function calculateAge(dob:Date):String {        
      var now:Date = new Date();
  
      var ageDays:int = 0;
      var ageYears:int = 0;
      var ageRmdr:int = 0;
  
      var diff:Number = now.getTime()-dob.getTime();
      ageDays = diff / 86400000;
      ageYears = Math.floor(ageDays / 365.24);
      ageRmdr = Math.floor( (ageDays - (ageYears*365.24)) / 30.4375 );
  
      if ( ageRmdr == 12 ) {
       ageRmdr = 11;
      }
  
      return ageYears + " years " + ageRmdr + " months";
  }
  

• var userDOB : Date = new Date(year,month-1,day);
  var today : Date = new Date();
  
  var diff : Date = new Date();
  diff.setTime( today.getTime() - userDOB.getTime() );
  
  var userAge : int = diff.getFullYear() - 1970;
  

• Here's a one-liner:

  int( now.getFullYear() - dob.getFullYear() + (now.getMonth() - dob.getMonth())*.01 + (now.getDate() - dob.getDate())*.0001 );
  

• The first answer is incorrect. The last comparison should be:

  if (dob.month > now.month || (dob.month == now.month && dob.date >= now.date)) 
  {
     yearsOld--;
  }
  

• The previous correction is still incorrect: you don't need to reduce 1 year on your birthday!

  if (dob.month > now.month || (dob.month == now.month && dob.date > now.date)) { yearsOld--; }

• I found a few problems with the top answer here. I used a couple of answers here to cobble together something which was accurate (for me anyway, hope for you too!)

  private function getYearsOld(dob:Date):uint
  {
      var now:Date = new Date();
      var age:Date = new Date(now.getTime() - dob.getTime());
      var yearsOld:uint = age.getFullYear() - 1970;
      return yearsOld;
  }
  

• I tried to correct the answer from Braxton here. Some people have aldready noticed it, but here is the correction in its context:

  private function getYearsOld(dob:Date):uint 
  {
    var now:Date = new Date();
    var yearsOld:uint = Number(now.fullYear) - Number(dob.fullYear);
  
    if (dob.month > now.month || (dob.month == now.month && dob.date > now.date) 
    {
      yearsOld--;
    }
    return yearsOld;
  }