Is it possible to update multiple cart items?

Question

To be more specific I would like to add an "update cart" button so that the visitor can adjust the quantity of multiple cart items without having to click on "update" for each cart item.

Answer 1

Not at the moment, you can submit a feature request for the feature here: https://github.com/craftcms/commerce/issues

Answer 2

If you're still using Commerce V1 - MultiAdd can do this - https://github.com/verbb/multi-add