The onEmptinessChange( ) callback method is invoked when the hosted field becomes empty or is no longer empty.
PaymentSession.onEmptinessChange([<HostedFieldsRole>], function(selector, result), [scope])
PaymentSession.onEmptinessChange(["card.number", "card.nameOnCard"], function(selector, result) { //handle change event if (result.isEmpty) { // field has empty value console.log("Element with selector " + selector + " has changed it's emptiness status to empty"); } else if (!result.isEmpty) { // field has non-empty value console.log("Element with selector " + selector + " has changed it's emptiness status to non-empty"); } });
An array of field roles for the hosted fields where the event occurred.
Valid array of field roles:
['card.nameOnCard'
,
'card.number'
,
'card.expiryMonth'
,
'card.expiryYear'
,
'card.securityCode'
,
'giftCard.number'
,
'giftCard.pin'
,
'ach.bankAccountNumber'
,
'ach.bankAccountHolder'
,
'ach.routingNumber']
The callback function invoked when the event is triggered.
The optional named instance of a card payment data set within a session. See Multiple Hosted Sessions for more information.
None