内容表

• 类型
• 方法
• 事件
• Example extensions
• 浏览器兼容性

alarms

Schedule code to run at a specific time in the future. This is like setTimeout() and setInterval() , except that those functions don't work with background pages that are loaded on demand.

Alarms do not persist across browser sessions. They are created globally across all contexts of a single extension. E.g. alarm created in background script will fire onAlarm event in background script, options page, popup page and extension tabs (and vice versa). Alarms API is not available in Content scripts .

To use this API you need to have the "alarms" permission .

类型

alarms.Alarm

Information about a particular alarm.

方法

alarms.clear()

Clear a specific alarm, given its name.

alarms.clearAll()

Clear all scheduled alarms.

alarms.create()

Create a new alarm.

alarms.get()

Retrieves a specific alarm, given its name.

alarms.getAll()

Retrieve all scheduled alarms.

事件

alarms.onAlarm

Fired when an alarm goes off.

Example extensions

• chill-out
• dynamic-theme

浏览器兼容性

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.

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最后修改： Oct 26, 2021 , 由 MDN 贡献者

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6. Firefox differentiators
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   1. Browser support for JavaScript APIs
   2. alarms
      1. 方法
         1. clear()
         2. clearAll()
         3. create()
         4. get()
         5. getAll()
      2. 类型
         1. 闹钟
      3. 事件
         1. onAlarm
   3. bookmarks
   4. browserAction
   5. browserSettings
   6. browsingData
   7. captivePortal
   8. clipboard
   9. 命令
   10. contentScripts
   11. contextualIdentities
   12. Cookie
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   15. downloads
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   17. extension
   18. extensionTypes
   19. find
   20. history
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   27. omnibox
   28. pageAction
   29. permissions
   30. pkcs11
   31. privacy
   32. proxy
   33. runtime
   34. search
   35. sessions
   36. sidebarAction
   37. storage
   38. tabs
   39. theme
   40. topSites
   41. 类型
   42. userScripts
   43. webNavigation
   44. webRequest
   45. windows
8. Manifest keys

   1. 介绍

   1. 作者
   2. background
   3. browser_action
   4. browser_specific_settings
   5. chrome_settings_overrides
   6. chrome_url_overrides
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   8. content_scripts
   9. content_security_policy
   10. default_locale
   11. description
   12. developer
   13. devtools_page
   14. dictionaries
   15. externally_connectable
   16. homepage_url
   17. icons
   18. incognito
   19. manifest_version
   20. name
   21. offline_enabled
   22. omnibox
   23. optional_permissions
   24. options_page
   25. options_ui
   26. page_action
   27. permissions
   28. protocol_handlers
   29. short_name
   30. sidebar_action
   31. storage
   32. theme
   33. theme_experiment
   34. user_scripts
   35. version
   36. version_name
   37. web_accessible_resources
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