A
BrowserSetting
object that can be used to prevent websites from showing notifications using the
Notifications
Web API.
Notifications
API is used to display desktop notifications to the user. There are three levels of permission for notifications:
allow
,
deny
，和
prompt
. Users can set this permission for every site. If the user has not set a permission for a particular site, then the browser will fall back to a global permission, which defaults to
prompt
.
设置
browserSettings.webNotificationsDisabled
to
true
switches the global permission to
deny
.
Note that this won't affect sites for which the user has set a per-site preference. For example, if the user sets
https://example.org
to
allow
, and an extension then sets
browserSettings.webNotificationsDisabled
to
true
, then pages under
https://example.org
will still be allowed to show notifications.
设置
browserSettings.webNotificationsDisabled
to
false
switches the global default back to its default value.
Note that this setting has no effect on notifications created by extensions using the
notifications
API。
BCD tables only load in the browser
Toggle the setting:
async function toggleWebNotifications() {
let current = await browser.browserSettings.webNotificationsDisabled.get({});
console.log(`Current value: ${current.value}`);
browser.browserSettings.webNotificationsDisabled.set({value: !current.value});
}
browser.browserAction.onClicked.addListener(() => {
toggleWebNotifications();
});
最后修改： , 由 MDN 贡献者