Gets the window that was most recently focused — typically the window 'on top'.

This is an asynchronous function that returns aPromise.

Syntax

let gettingWindow = browser.windows.getLastFocused(  getInfo               // optional object)

Parameters

getInfoOptional

object.

populateOptional

boolean. Iftrue, thewindows.Window object will have atabs property that contains a list oftabs.Tab objects representing the tabs in the window. TheTab objects only contain theurl,title andfavIconUrl properties if the extension's manifest file includes the"tabs" permission orhost permissions matching the tab's URL.

windowTypesOptional

Anarray ofwindows.WindowType objects. If set, thewindows.Window returned will be filtered based on its type. If unset the default filter is set to['normal', 'panel', 'popup'], with'panel' window types limited to the extension's own windows.

Return value

APromise that will be fulfilled with awindows.Window object containing the details of the last focused window. If any error occurs, the promise will be rejected with an error message.

Examples

Get the last focused window, and log the tabs it contains. Note that you'll need the "tabs"permission or matchinghost permissions to access tab URLs.

function logTabs(windowInfo) {  for (const tabInfo of windowInfo.tabs) {    console.log(tabInfo.url);  }}function onError(error) {  console.error(`Error: ${error}`);}browser.browserAction.onClicked.addListener((tab) => {  browser.windows.getLastFocused({ populate: true }).then(logTabs, onError);});

Browser compatibility