This is an experimental technology
Check the Browser compatibility table carefully before using this in production.
The FocusEvent()
constructor returns a newly created FocusEvent
object with an optional EventTarget
. When a change a focus has a source and a destination, the relatedTarget value must be set to the other target.
Syntax
var focusEvent = new FocusEvent(typeArg, focusEventInit);
Properties
The FocusEvent()
constructor also inherits arguments from UIEvent()
and from Event()
.
typeArg
- Is a
DOMString
representing the name of the event. focusEventInit
Optional- Is a
FocusEventInit
dictionary, having the following fields:"relatedTarget"
, optional and defaulting tonull
, is anEventTarget
representing the secondary target of aFocusEvent
.
The
FocusEventInit
dictionary also accepts fields from theUIEventInit
andEventInit
dictionaries.
Specifications
Specification | Status | Comment |
---|---|---|
Document Object Model (DOM) Level 3 Events Specification The definition of 'FocusEvent()' in that specification. |
Obsolete | Initial definition |
Browser compatibility
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|
Basic support | (Yes) | 24.0 (24.0) | No support | (Yes) | (Yes) |
Feature | Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|
Basic support | (Yes) | 24.0 (24.0) | No support | (Yes) | (Yes) |
See also
- The
FocusEvent
interface it belongs to.