FocusEvent.relatedTarget

The FocusEvent.relatedTarget read-only property is the secondary target, depending on the type of event:

Event name target relatedTarget
blur The EventTarget losing focus The EventTarget receiving focus (if any).
focus The EventTarget receiving focus The EventTarget losing focus (if any)
focusin The EventTarget receiving focus The EventTarget losing focus (if any)
focusout The EventTarget losing focus The EventTarget receiving focus (if any)

Note that many elements can't have focus, which is a common reason for relatedTarget to be null. relatedTarget may also be set to null for security reasons, like when tabbing in or out of a page.

MouseEvent.relatedTarget is a similar property for mouse events.

Syntax

secondTarget = focusEvent.relatedTarget

Specifications

Specification
UI Events
# dom-focusevent-relatedtarget

Browser compatibility

BCD tables only load in the browser

See also