Two primary goals: - Be able to embed iframes that have same-origin as other frames in the frame tree but not be able to directly script them. - Have a same-origin iframe with other iframes be in a separate event loop.
Motivation
Allowing cross-document DOM access has made the web very complicated. Wouldn't it be nice if individual pages could opt themselves or their frames into a simplier mode which didn't allow cross-document access?
Documentation
Specification
Specification being incubated in a Community Group
Status in Chromium
No longer pursuing
(tracking bug)
Consensus & Standardization
After a feature ships in Chrome, the values listed here are not guaranteed to be up to date.
Owner
Last updated on 2021-06-09