Weblayer use cases

Show a weblayer with the last visited product

Use this setup to show a weblayer on your home page featuring the product a customer last viewed.

Requirements

• A product catalog with the following columns: item_id, picture_url, link_url, price, and available.
• Event tracking: the view_item event tracked on every product page visit, with an item_id property matching the catalog's item_id.

Create an aggregate that returns last(view_item) → item_id. In the personalization panel, find your aggregate and use catalog lookup personalization:

{% set item = catalogs.products.item_by_id(aggregates['0102030405example']) %}

• Replace 0102030405example with the actual recommendation ID.

To check item availability and render values from the catalog:

{% if item and item.available == "true" %}
    {{ item.picture_url }}
    {{ item.link_url }}
    {{ item.price }}
{% endif %}

Show a weblayer on a specific day

To show a weblayer only on a specific day of the week, use either an expression or JavaScript.

Using an expression: Create an expression that evaluates the current day of the week.

(floor((((((now() / 86400) - 4) / 7)) - floor(((((now() / 86400) - 4) / 7)))) * 7)) + 1

• The expression divides the current Unix timestamp into weeks, extracts the fractional part to get the position within the week, and scales it to a value between 1 and 7 — where 1 is Monday and 7 is Sunday.

In the Audience settings, add a customer filter where this expression equals the target day. For example, to show the weblayer on Fridays, set the expression to equal 5.

Using JavaScript: Add custom JavaScript to the weblayer to control when it renders. The example below limits display to Sundays:

var today = new Date(Date.now());
var day = today.getDay()
if (day === 0){
//show banner
    console.log("Sunday")
} else {
//do not show banner
    console.log("Not Sunday")
}

📘

Unlike the expression above, getDay() uses a different numbering convention — 0 is Sunday and 6 is Saturday.