For example, does the following mark-up...
dataLayer = [
{
'transactionId': 'placeholder-id',
'transactionAffiliation': 'placeholder-affiliation',
'transactionTotal': 'placeholder-total',
Work with analytics.js, or a Google Tag Manager configuration? Any resources which provide information about how necessary an upgrade to Universal Analytics' new data layer would be hugely useful.
Thanks.
No, they are totally different. Try to search a little and you will find a lot of todos like: https://developers.google.com/tag-manager/enhanced-ecommerce http://merch.docs.magento.com/ee/user_guide/content/marketing/google-universal-analytics-enhanced-ecommerce.html
Example from google developers