Fired when a profile that has this extension installed first starts up. This event is not fired when a private browsing/incognito profile is started, even if this extension is operating in 'split' incognito mode.
Syntax
browser.runtime.onStartup.addListener(listener) browser.runtime.onStartup.removeListener(listener) browser.runtime.onStartup.hasListener(listener)
Events have three functions:
addListener(callback)- Adds a listener to this event.
removeListener(listener)- Stop listening to this event. The
listenerargument is the listener to remove. hasListener(listener)- Checks whether a
listeneris registered for this event. Returnstrueif it is listening,falseotherwise.
addListener syntax
Parameters
callback-
A function that will be called when this event occurs.
Browser compatibility
The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
| Chrome | Edge | Firefox | Firefox for Android | Opera | |
|---|---|---|---|---|---|
| Basic support | 23 | No | 52 | 52 | 15 |
Examples
Open http://chilloutandwatchsomecatgifs.com/ when the browser starts up:
function handleStartup() {
browser.tabs.create({
url: "http://chilloutandwatchsomecatgifs.com/"
});
}
browser.runtime.onStartup.addListener(handleStartup);
This API is based on Chromium's chrome.runtime API. This documentation is derived from runtime.json in the Chromium code.
Microsoft Edge compatibility data is supplied by Microsoft Corporation and is included here under the Creative Commons Attribution 3.0 United States License.
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