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.
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.
new FocusEvent(typeArg); new FocusEvent(typeArg, focusEventInit);
The FocusEvent() constructor also inherits arguments from UIEvent() and from Event().
typeArgIs 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. Note: The FocusEventInit dictionary also accepts fields from the UIEventInit and EventInit dictionaries.
| Specification |
|---|
| UI Events # dom-focusevent-focusevent |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
FocusEvent |
26 |
12 |
24 |
No |
15 |
7 |
4.4 |
26 |
24 |
14 |
7 |
1.5 |
FocusEvent interface it belongs to.
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https://developer.mozilla.org/en-US/docs/Web/API/FocusEvent/FocusEvent