vertical-scroll policy controls whether a document has the right to
override normal scrolling behaviour. When disallowed in a document, calls to
event.preventDefault() on scroll-related events will be ineffective, the
touch-action: none will behave as if it is
touch-action: pan-y, and
element.scrollIntoView() will not
propagate outside the document (ie. any parent frame that needs to be scrolled in order
for the element to be in view, will not be).
How to apply this policy
Send the following HTTP header to control the
vertical-scroll policy, and
disallow it on all origins:
Feature-Policy: vertical-scroll 'none'
Does it work?
Currently Firefox, and Chromium based browsers, such as Google Chrome, Samsung Internet,
and Opera, are the only user-agents to support Feature Policy. The minimum version that
correctly recognises the
vertical-scroll policy is: