Fires when the active tab in a window changes. Note that the tab's URL may not be set at the time this event fired, but you can listen to tabs.onUpdated
events to be notified when a URL is set.
browser.tabs.onActivated.addListener(listener) browser.tabs.onActivated.removeListener(listener) browser.tabs.onActivated.hasListener(listener)
Events have three functions:
addListener(callback)
removeListener(listener)
listener
argument is the listener to remove.hasListener(listener)
listener
is registered for this event. Returns true
if it is listening, false
otherwise.callback
Function that will be called when this event occurs. The function will be passed the following arguments:
activeInfo
object
. ID of the tab that was made active, and ID of its window.previousTabId
integer
. The ID of the previous activated tab, if that tab is still open.tabId
integer
. The ID of the tab that has become active.windowId
integer
. The ID of the tab's window.Listen for and log tab activation events:
function handleActivated(activeInfo) { console.log("Tab " + activeInfo.tabId + " was activated"); } browser.tabs.onActivated.addListener(handleActivated);
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | |
onActivated |
Yes |
14 |
45 |
? |
Yes |
14 |
? |
? |
54 |
? |
? |
? |
Note: This API is based on Chromium's chrome.tabs
API. This documentation is derived from tabs.json
in the Chromium code.
© 2005–2021 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/tabs/onActivated