Fired when a page is removed completely from the browser history.
history.deleteUrl
), then this event is fired once.
history.deleteRange
or a browser feature like "Clear Recent History"), then it is fired once for each page
whose visits all fall within the cleared range
.
history.deleteAll
), then it is fired only once.
browser.history.onVisitRemoved.addListener(listener)
browser.history.onVisitRemoved.removeListener(listener)
browser.history.onVisitRemoved.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. The function will be passed the following argument:
removed
对象
. Details of the removal. This is an object containing two properties: a boolean
allHistory
and an array
urls
.
allHistory
将是
true
and
urls
will be an empty array.
allHistory
将是
false
and
urls
will contain one item, which is the URL of the removed page.
BCD tables only load in the browser
function onRemoved(removed) {
if (removed.allHistory) {
console.log("All history removed");
} else if (removed.urls.length) {
console.log("URL removed: " + removed.urls[0]);
}
}
browser.history.onVisitRemoved.addListener(onRemoved);
注意：
This API is based on Chromium's
chrome.history
API. This documentation is derived from
history.json
in the Chromium code.
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