<f:if condition="{pageEventData}">
    <f:asset.script identifier="json-page-event-data"  priority="1" type="application/json" id="page-event-data">
        {pageEventData -> f:format.raw()}
    </f:asset.script>
</f:if>

<f:if condition="{ecommerceData}">
    <f:asset.script identifier="json-ecommerce-data"  priority="1" type="application/json" id="ecommerce-data">
        {ecommerceData -> f:format.raw()}
    </f:asset.script>
</f:if>