在此页

• 句法
• 浏览器兼容性
• 另请参阅
• 相关话题

弃用
This feature is no longer recommended. Though some browsers might still support it, it may have already been removed from the relevant web standards, may be in the process of being dropped, or may only be kept for compatibility purposes. Avoid using it, and update existing code if possible; see the 兼容性表格 at the bottom of this page to guide your decision. Be aware that this feature may cease to work at any time.

battery 只读特性返回 BatteryManager which provides information about the system's battery charge level and whether the device is charging and exposes events that fire when these parameters change. This interface was introduced in early drafts of the Battery Status API and but has been replaced with Promise -based Navigator.getBattery() .

battery property has been removed in favor of the standard Navigator.getBattery() method, which returns a battery Promise .

句法

var battery = navigator.battery;
					

浏览器兼容性

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
battery 弃用	Chrome 20 — 29 Prefixed 不支持 20 — 29 Prefixed Prefixed Implemented with the vendor prefix: webkit	Edge No	Firefox 16 — 50 不支持 16 — 50 Removed in favor of navigator.getBattery() . The Battery API was supported on Android, Windows, and Linux with UPower installed. Support for macOS was available starting with Firefox 18. 不支持 11 — 16 Prefixed Prefixed Implemented with the vendor prefix: moz 不支持 10 — 16 Disabled Disabled ). To change preferences in Firefox, visit	IE No	Opera No	Safari No	WebView Android No	Chrome Android No	Firefox Android 16 — 50 不支持 16 — 50 Removed in favor of navigator.getBattery() . The Battery API was supported on Android, Windows, and Linux with UPower installed. Support for macOS was available starting with Firefox 18. 不支持 14 — 16 Prefixed Prefixed Implemented with the vendor prefix: moz 不支持 10 — 16 Disabled Disabled ). To change preferences in Firefox, visit	Opera Android No	Safari iOS No	Samsung Internet Android No

图例

不支持

不支持

弃用。不要用于新网站。

弃用。不要用于新网站。

见实现注意事项。

用户必须明确启用此特征。

用户必须明确启用此特征。

要求使用供应商前缀或不同名称。

要求使用供应商前缀或不同名称。

另请参阅

• Navigator.getBattery()
• Battery Status API
• Blog post - Using the Battery API
• David Walsh on the JavaScript Battery API

元数据

• 最后修改： Aug 26, 2020

相关话题

1. Battery Status API
2. Navigator
3. 特性

   1. activeVRDisplays
   2. appCodeName
   3. appName
   4. appVersion
   5. battery
   6. buildID
   7. clipboard
   8. connection
   9. cookieEnabled
   10. credentials
   11. deviceMemory
   12. doNotTrack
   13. geolocation
   14. keyboard
   15. 语言
   16. languages
   17. locks
   18. maxTouchPoints
   19. mediaDevices
   20. mediaSession
   21. onLine
   22. oscpu
   23. permissions
   24. platform
   25. product
   26. productSub
   27. serviceWorker
   28. userAgent
   29. vendor
   30. vendorSub
   31. webdriver
   32. xr
4. 方法

   1. canShare()
   2. getBattery()
   3. getGamepads()
   4. getUserMedia()
   5. getVRDisplays()
   6. mozIsLocallyAvailable()
   7. msLaunchUri()
   8. registerContentHandler()
   9. registerProtocolHandler()
   10. requestMediaKeySystemAccess()
   11. sendBeacon()
   12. share()
   13. taintEnabled()
   14. vibrate()
5. Related pages for Battery API

   1. BatteryManager
   2. Navigator.battery
   3. Navigator.getBattery()