windowId

integer. The ID of the window object you want returned.

getInfo Optional

object. Contains options to filter the type of window.

populate Optional

boolean. If true, the windows.Window object will have a tabs property that contains a list of tabs.Tab objects representing the tabs open in the window. The Tab objects only contain the url, title and favIconUrl properties if the extension's manifest file includes the "tabs" permission or a matching host permission.

windowTypes Optional

array of windows.WindowType objects. If set, the windows.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.

A Promise that will be fulfilled with a windows.Window object containing the details of the window. If any error occurs, the promise will be rejected with an error message.

This example gets the current window and logs the URLs of the tabs it contains. Note that you'll need the "tabs" permission or matching host 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.get(tab.windowId, { populate: true }).then(logTabs, onError);
});