Previous Page Extension

Prerequisites

• utag v4.38 or later. For more information about updating the utag.js template, see our knowledge base article Best Practices for Updating to the Latest Version of utag.js.
• How extensions work

How it works

The Previous Page extension adds a variable to the data layer named previous_page_name. The value of this variable is set to the value of a data layer variable from the previous page. You specify which data layer variable to use as the page name and the extension will save this value in a cookie so that it can be used on subsequent pages.

Here is a simple example where page_name is used. It shows what value to expect in previous_page_name as a visitor navigates through a series of pages. Notice that previous_page_name is not set on the first page in the session.

Using the extension

Once the extension is added, the following configuration option is available:

• Page Value: Select the data layer variable that contains the page’s name.

The extension automatically saves the value of this variable and sets it to previous_page_name on the next page view.