This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for the proper prefixes to use in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the spec changes.
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. |
Working Draft | Initial definition |
Browser compatibility
Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
---|---|---|---|---|---|
Basic support | (Yes) | 24.0 (24.0) | Not supported | (Yes) | (Yes) |
Feature | Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
---|---|---|---|---|---|
Basic support | (Yes) | 24.0 (24.0) | Not supported | (Yes) | (Yes) |
See also
- The
FocusEvent
interface it belongs to.