onFocus Callback

The onFocus( ) callback invokes the function registered against this event when the hosted field in the iFrame has gained focus.

PaymentSession.onFocus([HostedFieldsRole], function(selector));

PaymentSession.onFocus(['cardNumber', 'securityCode'], function(selector) {
    //handle focus event
});

HostedFieldsRole Array

An array of field roles for the hosted fields where the event occurred. Valid array of field roles:

cardNumber

securityCode

callbackFunction Function

The callback function invoked with the selector for the field whose proxy triggered the event.

None