The onChange( ) callback invokes the function registered against this event when the input value in the hosted field in the iFrame has changed.
PaymentSession.onChange([<HostedFieldsRole>], function(selector))
PaymentSession.onChange(['cardNumber','securityCode'], function(selector) { //handle change event });
An array of field roles for the hosted fields where the event occurred. Valid array of field roles: ['cardNumber','securityCode']
The callback function invoked with the selector for the field whose proxy triggered the event.
None