内容表

• 类型
• 特性
• 函数
• 事件
• 浏览器兼容性
• Example extensions

sessions

Use the sessions API to list, and restore, tabs and windows that have been closed while the browser has been running.

sessions.getRecentlyClosed() function returns an array of  tabs.Tab and windows.Window objects, representing tabs and windows that have been closed since the browser was running, up to the maximum defined in sessions.MAX_SESSION_RESULTS .

You can then restore a window or tab using the sessions.restore() function. Restoring doesn't just reopen the tab: it also restores the tab's navigation history so the back/forward buttons will work.

This API also provides a group of functions that enable an extension to store additional state associated with a tab or a window. Then, if the tab or window is closed and subsequently restored, the extension can retrieve the state. For example, a tab grouping extension might use this to remember which group a tab is in, so as to restore it into the right group if the user restores the tab.

To use the sessions API you must have the "sessions" API permission .

类型

sessions.Filter

Enables you to restrict the number of Session objects returned by a call to sessions.getRecentlyClosed() .

sessions.Session

Represents a tab or window that the user has closed in the current browsing session.

特性

sessions.MAX_SESSION_RESULTS

The maximum number of sessions that will be returned by a call to sessions.getRecentlyClosed() .

函数

sessions.forgetClosedTab()

Removes a closed tab from the browser's list of recently closed tabs.

sessions.forgetClosedWindow()

Removes a closed window from the browser's list of recently closed windows.

sessions.getRecentlyClosed()

Returns an array of Session objects, representing windows and tabs that were closed in the current browsing session (that is: the time since the browser was started).

sessions.restore()

Restores a closed tab or window.

sessions.setTabValue()

Store a key/value pair associated with a given tab.

sessions.getTabValue()

Retrieve a previously stored value for a given tab, given its key.

sessions.removeTabValue()

Remove a key/value pair from a given tab.

sessions.setWindowValue()

Store a key/value pair associated with a given window.

sessions.getWindowValue()

Retrieve a previously stored value for a given window, given its key.

sessions.removeWindowValue()

Remove a key/value pair from a given window.

事件

sessions.onChanged

Fired when a tab or window is closed.

浏览器兼容性

BCD tables only load in the browser

Example extensions

• session-state

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.

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最后修改： Jan 21, 2022 , 由 MDN 贡献者

相关话题

1. 浏览器扩展名
2. 快速入门

   1. What are extensions?
   2. Your first extension
   3. Your second extension
   4. Anatomy of an extension
   5. Example extensions
   6. What next?
3. 概念

   1. Using the JavaScript APIs
   2. Content scripts
   3. Match patterns
   4. Working with files
   5. 国际化
   6. Content Security Policy
   7. Native messaging
   8. Differences between API implementations
   9. Chrome incompatibilities
4. 用户界面

   1. 用户界面
   2. Toolbar button
   3. Address bar button
   4. Sidebars
   5. Context menu items
   6. Options page
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5. 如何

   1. Intercept HTTP requests
   2. Modify a web page
   3. Insert external content
   4. Share objects with page scripts
   5. Add a button to the toolbar
   6. Implement a settings page
   7. Work with the Tabs API
   8. Work with the Bookmarks API
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   10. Work with contextual identities
   11. Interact with the clipboard
   12. Build a cross-browser extension
6. Firefox differentiators
7. JavaScript API

   1. Browser support for JavaScript APIs
   2. alarms
   3. bookmarks
   4. browserAction
   5. browserSettings
   6. browsingData
   7. captivePortal
   8. clipboard
   9. 命令
   10. contentScripts
   11. contextualIdentities
   12. Cookie
   13. devtools
   14. dns
   15. downloads
   16. events
   17. extension
   18. extensionTypes
   19. find
   20. history
   21. i18n
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   23. idle
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   26. notifications
   27. omnibox
   28. pageAction
   29. permissions
   30. pkcs11
   31. privacy
   32. proxy
   33. runtime
   34. search
   35. sessions
       1. 方法
          1. forgetClosedTab()
          2. forgetClosedWindow()
          3. getRecentlyClosed()
          4. getTabValue()
          5. getWindowValue()
          6. removeTabValue()
          7. removeWindowValue()
          8. restore()
          9. setTabValue()
          10. setWindowValue()
       2. 特性
          1. MAX_SESSION_RESULTS
       3. 类型
          1. 过滤
          2. Session
       4. 事件
          1. onChanged
   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
   7. 命令
   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
9. Extension Workshop

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10. Contact us
11. Channels

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