sessions.restore()
Restores a closed tab or window. Restoring doesn't just reopen the tab or window: it also restores the tab's navigation history so the back/forward buttons will work. Restoring a window will restore all the tabs that the window contained when it was closed.
This is an asynchronous function that returns a Promise.
Syntax
let restoringSession = browser.sessions.restore( sessionId // string ) Parameters
sessionId-
string. A string containing the session ID for the window or tab to restore. This can be found in thesessionIdproperty of theTaborWindowobject in theSessionreturned fromsessions.getRecentlyClosed().
Return value
A Promise. This will be fulfilled with a Session object representing the session that was restored.
Examples
This restores the single most recently-closed session, whether it's a window or tab:
function restoreMostRecent(sessionInfos) { if (!sessionInfos.length) { console.log("No sessions found"); return; } let sessionInfo = sessionInfos[0]; if (sessionInfo.tab) { browser.sessions.restore(sessionInfo.tab.sessionId); } else { browser.sessions.restore(sessionInfo.window.sessionId); } } function onError(error) { console.log(error); } browser.browserAction.onClicked.addListener(() => { let gettingSessions = browser.sessions.getRecentlyClosed({ maxResults: 1, }); gettingSessions.then(restoreMostRecent, onError); }); Browser compatibility
Note: This API is based on Chromium's chrome.sessions API.
Known issues
Bug 1538119 - Duplicate sessionId in browser.sessions.getRecentlyClosed() after "Restore previous session"