The JS implementation calculates the age based on the date of birth
- 2020-03-30 01:16:36
- OfStack
<script language=javascript>
function ages(str)
{
var r = str.match(/^(d{1,4})(-|/)(d{1,2})2(d{1,2})$/);
if(r==null)return false;
var d= new Date(r[1], r[3]-1, r[4]);
if (d.getFullYear()==r[1]&&(d.getMonth()+1)==r[3]&&d.getDate()==r[4])
{
var Y = new Date().getFullYear();
return(" age = "+ (Y-r[1]) +" One full year of life ");
}
return(" Wrong date format! ");
}
alert(ages("1980-03-22"));
alert(ages("2002-01-31"));
alert(ages("2002-01-41"));
</script>