An object which allows the addition and removal of listeners for a browser event.
events.Event
Type
Values of this type are objects.
Methods
-
events.Event.addListener() -
Registers an event listener callback to an event.
-
events.Event.removeListener() -
Deregisters an event listener callback from an event.
-
events.Event.hasListener() -
Tests registration status of a listener.
-
events.Event.hasListeners() -
Tests whether any listeners are registered to the event.
-
events.Event.addRules() -
Registers rules to handle events.
-
events.Event.getRules() -
Returns currently registered rules.
-
events.Event.removeRules() -
Unregisters currently registered rules.
Browser compatibility
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
Event |
Yes | 14 | No | ? | Yes | 14 | ? | ? | No | ? | 15 | ? |
addListener |
Yes | 14 | No | ? | Yes | 14 | ? | ? | No | ? | 15 | ? |
addRules |
Yes | 79 | No | ? | Yes | No | ? | ? | No | ? | No | ? |
getRules |
Yes | 79 | No | ? | Yes | No | ? | ? | No | ? | No | ? |
hasListener |
Yes | 14 | No | ? | Yes | 14 | ? | ? | No | ? | 15 | ? |
hasListeners |
Yes | 79 | No | ? | Yes | No | ? | ? | No | ? | No | ? |
removeListener |
Yes | 14 | No | ? | Yes | 14 | ? | ? | No | ? | 15 | ? |
removeRules |
Yes | 79 | No | ? | Yes | No | ? | ? | No | ? | No | ? |
Note: This API is based on Chromium's chrome.events API. This documentation is derived from events.json in the Chromium code.
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https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/events/Event