Web/API/FocusEvent/FocusEvent

The FocusEvent() constructor returns a newly created FocusEvent object with an optional EventTarget. When the event has both 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 to null, is an EventTarget representing the secondary target of a FocusEvent.

The FocusEventInit dictionary also accepts fields from the UIEventInit and EventInit dictionaries.

Specifications

Specification	Status	Comment
Document Object Model (DOM) Level 3 Events SpecificationThe definition of 'FocusEvent()' in that specification.	Obsolete	Initial definition

Browser compatibility

Update compatibility data on GitHub

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`FocusEvent()` constructor Experimental'	Chrome Full support Yes	Edge Full support ≤18	Firefox Full support 24	IE No support No	Opera Full support Yes	Safari Full support Yes	WebView Android Full support Yes	Chrome Android Full support Yes	Firefox Android Full support 24	Opera Android Full support Yes	Safari iOS Full support Yes	Samsung Internet Android Full support Yes

Legend

Full support: Full support
No support: No support
Experimental. Expect behavior to change in the future.': Experimental. Expect behavior to change in the future.