Fired when any alarm set by the extension goes off.
browser.alarms.onAlarm.addListener(listener)
浏览器
.
alarms
.
onAlarm
.
removeListener
(
listener
)
浏览器
.
alarms
.
onAlarm
.
hasListener
(
listener
)
Events have three functions:
addListener(listener)
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。
listener
Function that will be called when this event occurs. The function will be passed the following arguments:
alarm
alarms.Alarm
. The alarm that fired. Use
Alarm.name
to figure out which alarm fired.
Handle an alarm going off:
function handleAlarm(alarmInfo) {
console.log("on alarm: " + alarmInfo.name);
}
browser.alarms.onAlarm.addListener(handleAlarm);
BCD tables only load in the browser
注意：
This API is based on Chromium's
chrome.alarms
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