Rooster - Apply Discount on Interaction

gistfile1.txt

<script>
    function onInteraction(e) { 
        // Run the discount code here. 
        // Important - interaction events can happen multiple times with a given overlay so
        //  you'll want to ensure the discount is only applied once. 
    }
    
    $(window).on('message', function(e) {
        // Make sure the message is coming from Rooster
        if (e.originalEvent.origin + '/' !== window.location.protocol + _GT_config.gt_host) {
            return;
        }
        switch (e.originalEvent.data) {
            case "gt_interaction_popup":
                return onInteraction(e.originalEvent);
        }

    });
</script>