Fired whenever the list of closed tabs or windows changes.
browser.sessions.onChanged.addListener(listener)
浏览器
.
sessions
.
onChanged
.
removeListener
(
listener
)
浏览器
.
sessions
.
onChanged
.
hasListener
(
listener
)
Events have three functions:
addListener(callback)
Adds a listener to this event.
removeListener(listener)
Stop listening to this event. The
listener
argument is the listener to remove.
hasListener(listener)
校验是否
listener
is registered for this event. Returns
true
if it is listening,
false
否则。
callback
Function that will be called when this event occurs. It's passed no parameters.
BCD tables only load in the browser
This very annoying extension listens for
onChanged
, then immediately restores the most recently closed session, thus making it impossible to close windows or tabs:
function restoreSession(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);
}
function restoreMostRecent() {
var gettingSessions = browser.sessions.getRecentlyClosed({
maxResults: 1
});
gettingSessions.then(restoreSession, onError);
}
browser.sessions.onChanged.addListener(restoreMostRecent);
注意：
This API is based on Chromium's
chrome.sessions
API。
Microsoft Edge compatibility data is supplied by Microsoft Corporation and is included here under the Creative Commons Attribution 3.0 United States License.
最后修改： , 由 MDN 贡献者