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HTML Integration: Cart Page (Legacy)

NOTE This section refers to a legacy feature which is only available to existing customers. New and existing customers looking to add personalization should refer to Cart Page (JSON)

The cart page typically displays the items in a shopper's cart. It is a distinct page separate from the add-to-cart page, which may be a modal window or an interstitial page before cart, such as an options page.

How To Make This Code Work For You

Follow the sample integration code below, making these changes:

Function Requirement


Replace MY_API_KEY with your site's API key, a unique identifier for your account.


Set RRSERVER_URL to one of these values.

  • For initial development: window.location.protocol+'//'
  • For production: window.location.protocol+'//'


Replace USER_SESSION_ID with the session ID for the current user and session. The session ID is a crucial variable that allows Algonomy to track shopper behavior when they visit your site so recommendations can be generated. This parameter should remain the same from start to finish for a user's shopping session.


Replace USER_ID with the user ID, a unique string to identify each user. All user behavior will be stored using this key. It is case-sensitive and should be the same UserId sent to {rr} in other applications.User IDs are often connected to email addresses, and can be directly linked to the login credentials a consumer uses to log into and buy products from the e-commerce site. To avoid sending personally identifiable information to Algonomy, you can use a hash of your site's user ID (if, for example, your site uses email addresses as user IDs, then you should not send that information directly to Algonomy).

Note: if the USER_ID is unknown, leave it blank.


Use this function once for every item in the cart. Replace ITEM_ID with the item ID, a unique identifier for the item. Replace SKU with the specific SKU the user has purchased. If there is no SKU ID, this can be left empty.

Note: Personalization capabilities at the SKU level are currently unavailable. However, we are ready to accept and evaluate this data for recommendations.

No changes are required.

This code enables the client to send the domain for click-through URL through the p13n_generated.js call if relative URLs are supplied in the feed. For example, if the domain calling our code is or, we can automatically redirect to the correct domain.

Sample Integration Code

Primary Code Block

<!-- Place this code inside the <body> element as close to the top as possible -->
<script src="//"></script>
<script charset="utf-8" type="text/javascript">
var R3_COMMON = new r3_common(); 
R3_COMMON.setSessionId('6B4D397B'); R3_COMMON.setUserId('1'); // if no user ID is available, please leave this blank

// here's an example requesting recommendations for 3 page areas

var R3_CART = new r3_cart();
R3_CART.addItemId('21666189', '9876A'); // iterate over this line for each item in the cart r3();


Placement-marker Code Blocks

<script charset="utf-8" type="text/javascript">
<!-- Page contents -->
<script charset="utf-8" type="text/javascript">
<!-- Page contents -->
<script charset="utf-8" type="text/javascript">

Flush Code Block

<script charset="utf-8" type="text/javascript">


  • The values in addPlacementType() should match the values in each r3_placement() call.