The unlock() method of the ScreenOrientation interface unlocks the orientation of the containing document, effectively locking it to the default screen orientation.
unlock()None.
None (undefined).
InvalidStateError DOMExceptionThrown if the document is not fully active.
SecurityError DOMExceptionThrown if the document's visibility state is hidden or if the document is forbidden to use the feature (for example, by omitting the keyword allow-orientation-lock of the sandbox attribute of the iframe element).