Password confirmation hint hide/show stopped working

var $password = $("#password");
var $confirmPassword = $("#confirm_password");

//Hide hints

$("form span").hide();

function isPasswordValid() {
  return $password.val().length > 8;
}

function arePasswordsMatching() {
  $password.val() === $confirmPassword.val();
}






function passwordEvent() {
  //Find out if password is valid
  if(isPasswordValid()) {
    //Hide hint if valid
    $password.next().hide();
  } else {
    //Else show hint
    $password.next().show();
  }
}


function confirmPasswordEvent() {
   //Find out if password and confirmation match
    if(arePasswordsMatching()) {
    //Hide hint if matched
      $confirmPassword.next().hide();
    } else {
      //else show hint
      $confirmPassword.next().show();

    }



}






//When event happens on password input
$password.focus(passwordEvent).keyup(passwordEvent).focus(confirmPasswordEvent).keyup(confirmPasswordEvent);


//When event happens on confirmation input
$confirmPassword.focus(confirmPasswordEvent).keyup(confirmPasswordEvent);