Some merchant sites may not know the total or line items at the time of attempting to open the payment sheet with show(). This feature is a way to signal that the browser should show a spinner or equivalent and wait on allowing end user interaction until an update.



Specification link

Specification currently under development in a Working Group

Status in Chromium


Enabled by default (tracking bug)

Consensus & Standardization

After a feature ships in Chrome, the values listed here are not guaranteed to be up to date.


Last updated on 2021-12-13