How to set the _tracking_consent cookie to a domain that does not propagate to subdomains

[alex_pandectes]

Hi, so I was wondering if there is a way to stop the propagation of the Shopify _tracking_consent cookie to the subdomains of a main domain. For example: 

_tracking_consent should be on the domain.com site
but not on the subdomain.domain.com site.

So my question is: is it possible to change this cookie's domain scope? from .domain.com to domain.com
Thanks! 

[Small_Task_Help]

Hi,

It can be done by correctly setting up domain attribute 

Example script that you can add to your theme’s theme.liquid or use through Google Tag Manager:

document.addEventListener('DOMContentLoaded', function() {
  // Check if the existing cookie is set to the current domain
  var trackingConsentCookie = document.cookie.match(/_tracking_consent=([^;]*)/);
  
  if (trackingConsentCookie) {
    // Delete the existing cookie with .domain.com
    document.cookie = "_tracking_consent=; path=/; domain=.domain.com; expires=Thu, 01 Jan 1970 00:00:00 UTC;";

    // Set the cookie specifically to domain.com
    document.cookie = "_tracking_consent=" + trackingConsentCookie[1] + "; path=/; domain=domain.com; SameSite=Lax;";
  }
});

[alex_pandectes]

Thanks! I will test and let you know if this works on my store! 

[alex_pandectes]

Hi, it's me again here, Tested this approach, but it did not work. Tried many variants of this code, but in general, the following happens: 

The cookie is deleted (this is OK)
when setting the new cookie up only for the main domain, it automatically gets set on the .domain.com ... Not sure if I did something wrong, please let me know 🙂
Is there also any other approach to this? 

Thanks a lot!