The BarProp interface of the Document Object Model represents the web browser user interface elements that are exposed to scripts in web pages.
BarProp
MDN Reference
Readonly
The visible read-only property of the BarProp interface returns true if the user interface element it represents is visible.
visible
true
The
BarProp
interface of the Document Object Model represents the web browser user interface elements that are exposed to scripts in web pages.MDN Reference