Age calculation script

[William de Smet]

Hi there,

For an educational app I want to calculate someone's age based on date
of birth and todays date but I don't know how to start!
I made a field in which the user puts its 'date of birth' (dd/mm/yy)
and a button that needs to compare 'todays date' and the 'date of
birth'.

The output needs to be : age and months (and days?)

Is there someone who has any suggestions?

greetings,

William de Smet