This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage 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 specification changes.
The FocusEvent interface represents focus-related events like focus, blur, focusin, or focusout.
FocusEvent()FocusEvent event with the given parameters.Inherits properties from its parent UIEvent, and indirectly from Event.
FocusEvent.relatedTarget Read only
EventTarget representing a secondary target for this event. As in some cases (like when tabbing in or out a page), this property may be set to null for security reasons.No specific method; inherits methods from its parent UIEvent, and indirectly from Event.
| Specification | Status | Comment |
|---|---|---|
| Document Object Model (DOM) Level 3 Events Specification The definition of 'FocusEvent' in that specification. | Working Draft | Initial definition. |
| Feature | Chrome | Edge | Firefox (Gecko) | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|---|
| Basic support | (Yes) | (Yes) | 24.0 (24.0) | 9.0 | (Yes) | (Yes) |
| Constructor | (Yes) | (Yes) | 24.0 (24.0) | No support | (Yes) | (Yes) |
| Feature | Android | Edge | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|---|
| Basic support | (Yes) | (Yes) | 24.0 (24.0) | (Yes) | (Yes) | (Yes) |
| Constructor | (Yes) | (Yes) | 24.0 (24.0) | No support | (Yes) | (Yes) |
Event base interface.
© 2005–2017 Mozilla Developer Network and individual contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/FocusEvent