February 1, 2014

Tealium Universal Tag (utag.js)

• Introduces support for AudienceStream Data Layer Enrichment. This requires AudienceStream and the DataCloud Tag.
• The utag.js reads Meta tags with every utag.view call in order to capture dynamic Meta tags.
• There are several changes to the utag_main cookie:

  • The utag_main cookie’s lifespan is now set to 1 year to conform to EU laws.

  • The session ID (ses_id) value in the utag_main cookie is now a timestamp that is used to compute a visitor’s time on your website.

    To reference this value, use the following syntax:

    b["cp.utag_main_ses_id"]
    

  • Introduces the session number value in the utag_main cookie.

    To reference this value, use the following syntax:

    b["cp.utag_main__sn"]
    

  • Introduces the page number value, which increments every time utag.js loads, essentially with each new URL load. This is not to be confused with an Event Counter. This value starts over at 1 with each new session.

    To reference this value, use the following syntax:

    b["cp.utag_main__pn"]
    

  • Known issue: The page number (_pn) and session number (_sn) values are set to NaN whenever a visitor visits a website in which the utag_main session cookies was already set by a version of utag.js prior to 4.27. This issue is resolved in utag.js version 4.28.

• Introduces the utag.ut.flatten function, which flattens objects. This is primarily used with Data Layer Enrichment for AudienceStream.