stop immediate propagation flag

stop immediate propagation flag

仕様書

歴史

[1] Properly check event's stop immediate propagation flag in "inner invoke" · whatwg/dom@b7a94a2 ( 版) <https://github.com/whatwg/dom/commit/b7a94a2d90b37330ae9a5e5a125ce9047f867e42>