Fired when a window is closed.

Syntax

browser.windows.onRemoved.addListener(listener)browser.windows.onRemoved.removeListener(listener)browser.windows.onRemoved.hasListener(listener)

Events have three functions:

addListener(listener)

Adds a listener to this event.

removeListener(listener)

Stop listening to this event. Thelistener argument is the listener to remove.

hasListener(listener)

Checks whether alistener 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 this argument:

windowId

integer. ID of the window that was closed.

Examples

Log the IDs of windows as they are removed.

browser.windows.onRemoved.addListener((windowId) => {  console.log(`Closed window: ${windowId}`);});

Browser compatibility