By nod_ on
Change record status: 
Published (View all published change records)
Project: 
Drupal core
Introduced in branch: 
8.x
Issue links: 
https://www.drupal.org/node/229825
Description: 

The has_js cookie has been removed. Only Batch API used it as a workaround. A clean solution has been reached avoiding the need for the cookie.

Impacts: 
Module developers