var exampleCallback = function() { console.log('Order complete!'); }; window.EBWidgets.createWidget({ // Required widgetType: 'checkout', eventId: '2003621812778', iframeContainerId: 'eventbrite-widget-container-2003621812778', // Optional iframeContainerHeight: 425, // Widget height in pixels. Defaults to a minimum of 425px if not provided themeSettings: { brandColor: '#D1410C', fontColor: '#000000', background: '#FFFFFF', }, onOrderComplete: exampleCallback // Method called when an order has successfully completed });