jQuery validation helpers

gistfile1.js

  jQuery.validator.addMethod "min_age", (value, element)  ->
    date = value.split '-'
    dob = new Date date[0], date[1], date[2]
    _today = new Date()
    _18_years_ago = new Date _today.getYear() - 18, _today.getMonth(), _today.getDay()
    return dob < _18_years_ago
  , "You must be over 18 years of age to use Nutmeg"
  
  jQuery.validator.addMethod "max_age", (value, element)  ->
    date = value.split '-'
    dob = new Date date[0], date[1], date[2]
    _today = new Date()
    _100_years_ago = new Date _today.getYear() - 100, _today.getMonth(), _today.getDay()
    return dob > _100_years_ago
  , "You must be under 100 years of age to use Nutmeg"
  
  jQuery.validator.addMethod "ni_number", (value, element) ->
    return /^[A-CEGHJ-PR-TW-Z][A-CEGHJ-NPR-TW-Z] ?([0-9]{2} ?){3} ?[ABCD ]?$/.test(value)
  , "You must supply a valid National Insurance Number"