HTMLStyleElement.scoped
Non-standard: This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.
Deprecated: This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the compatibility table at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.
The HTMLStyleElement.scoped property is a Boolean value indicating if the
element applies to the whole document (false) or only to the parent's
sub-tree (true).
By default it contains the value of the scoped content
attribute.
Syntax
value = style.scoped;
style.scoped = true;
Browser compatibility
BCD tables only load in the browser