在此页

• 句法
• 规范
• 浏览器兼容性
• 相关话题

这是 实验性技术
检查 浏览器兼容性表格 要小心谨慎在生产中使用这之前。

permissionState() 方法在 PushManager interface returns a Promise 解析为 DOMString indicating the permission state of the push manager. Possible values are 'prompt' , 'denied' ，或 'granted' .

注意 : As of Firefox 44, the permissions for Notifications and Push have been merged. If permission is granted for notifications, push will also be enabled.

句法

PushManager.permissionState(options).then(function(PushMessagingState) { ... });
					

参数

选项 可选

An object containing optional configuration parameters. It can have the following properties:

• userVisibleOnly : A boolean indicating that the returned push subscription will only be used for messages whose effect is made visible to the user.
• applicationServerKey : A public key your push server will use to send messages to client apps via a push server. This value is part of a signing key pair generated by your application server and usable with elliptic curve digital signature (ECDSA) over the P-256 curve.

返回

A Promise 解析为 DOMString 采用值 'prompt' , 'denied' ，或 'granted' .

规范

规范	状态	注释
Push API The definition of 'permissionState()' in that specification.	工作草案	初始定义。

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
permissionState	Chrome 42	Edge 16 Disabled 16 Disabled Disabled From version 16: this feature is behind the Enable service workers preference. 17	Firefox 44 44 注意事项 注意事项 Extended Support Releases (ESR) before Firefox 78 ESR do not support service workers and the Push API.	IE 不支持 No	Opera 29	Safari 不支持 No	WebView Android 不支持 No	Chrome Android 42	Firefox Android 48 48 注意事项 注意事项 Push enabled by default.	Opera Android 29	Safari iOS 不支持 No	Samsung Internet Android 4.0

图例

完整支持

完整支持

不支持

不支持

实验。期望将来行为有所改变。

实验。期望将来行为有所改变。

见实现注意事项。

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。

元数据

• 最后修改： 2020 年 1 月 22 日

相关话题

1. Push API
2. PushManager
3. 特性

   1. supportedContentEncodings
4. 方法

   1. getSubscription()
   2. hasPermission()
   3. permissionState()
   4. register()
   5. registrations()
   6. subscribe()
   7. unregister()
5. Related pages for Push API

   1. PushEvent
   2. PushMessageData
   3. PushSubscription
   4. ServiceWorkerGlobalScope.onpush
   5. ServiceWorkerGlobalScope.onpushsubscriptionchange
   6. ServiceWorkerRegistration.pushManager