onEmptinessChange Callback

The onEmptinessChange( ) callback method is invoked when the hosted field becomes empty or is no longer empty.

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PaymentSession.onEmptinessChange([HostedFieldsRole], function(selector, result), [scope])

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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");
    }
});

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HostedFieldsRole Array REQUIRED

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

callbackFunction Function

The callback function invoked when the event is triggered.

scope String

The optional named instance of a card payment data set within a session. See Multiple Hosted Sessions for more information.

Return Value Copied to clipboard

None