Join MDN and developers like you at Mozilla's View Source conference, 12-14 September in Berlin, Germany. Learn more at https://viewsourceconf.org

unread

unread
Type: boolean
This attribute is set to true if the tab is unread; that is, either it has not yet been selected during the current session, or has changed since the last time it was selected. This attribute is not present if the tab is not unread.

See also

Document Tags and Contributors

 Contributors to this page: Sheppy
 Last updated by: Sheppy,