tabs.onRemoved
Fired when a tab is closed.
Syntax
browser.tabs.onRemoved.addListener(listener)
browser.tabs.onRemoved.removeListener(listener)
browser.tabs.onRemoved.hasListener(listener)
Events have three functions:
addListener(listener)
-
Adds a listener to this event.
removeListener(listener)
-
Stop listening to this event. The
listener
argument is the listener to remove. hasListener(listener)
-
Check whether
listener
is registered for this event. Returnstrue
if it is listening,false
otherwise.
addListener syntax
Parameters
listener
-
The function called when this event occurs. The function is passed these arguments:
tabId
-
integer
. ID of the tab that closed. removeInfo
-
object
. The tab's window ID, and a boolean indicating whether the window is also being closed. See the removeInfo section for more details.
Additional objects
removeInfo
windowId
-
integer
. The window whose tab is closed. isWindowClosing
-
boolean
.true
if the tab is being closed because its window is being closed.
Examples
Listen for close events, and log the info:
function handleRemoved(tabId, removeInfo) {
console.log(`Tab: ${tabId} is closing`);
console.log(`Window ID: ${removeInfo.windowId}`);
console.log(`Window is closing: ${removeInfo.isWindowClosing}`);
}
browser.tabs.onRemoved.addListener(handleRemoved);
Example extensions
Browser compatibility
BCD tables only load in the browser
Note: This API is based on Chromium's chrome.tabs
API. This documentation is derived from tabs.json
in the Chromium code.