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• 句法
• 范例
• 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。

getKey() 方法在 PushSubscription interface returns an ArrayBuffer representing a client public key, which can then be sent to a server and used in encrypting push message data.

句法

​var key = subscription.getKey(name);
					

参数

名称

DOMString representing the encryption method used to generate a client key.  The value can be:

• p256dh : An Elliptic curve Diffie–Hellman public key on the P-256 curve (that is, the NIST secp256r1 elliptic curve).  The resulting key is an uncompressed point in ANSI X9.62 format.
• auth : An authentication secret, as described in Message Encryption for Web Push .

返回

ArrayBuffer .

范例

reg.pushManager.getSubscription()
  .then(function(subscription) {
  // Enable any UI which subscribes / unsubscribes from
  // push messages.
  subBtn.disabled = false;
  if (!subscription) {
    console.log('Not yet subscribed to Push')
    // We aren't subscribed to push, so set UI
    // to allow the user to enable push
    return;
  }
  // Set your UI to show they have subscribed for
  // push messages
  subBtn.textContent = 'Unsubscribe from Push Messaging';
  isPushEnabled = true;
  // initialize status, which includes setting UI elements for subscribed status
  // and updating Subscribers list via push
  var endpoint = subscription.endpoint;
  var key = subscription.getKey('p256dh');
  var auth = subscription.getKey('auth');
    ...
					

规范

规范	状态	注释
Push API	工作草案	This is the Push API spec, but note that getKey() is not currently specified in here. It is currently Firefox-only experimental.

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
getKey()	Chrome 42	Edge 16	Firefox 44 注意事项 44 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	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

见实现注意事项。

元数据

• 最后修改： 2019 年 3 月 23 日

相关话题

1. Push API
2. PushSubscription
3. 特性

   1. endpoint
   2. expirationTime
   3. 选项
   4. subscriptionId
4. 方法

   1. getKey()
   2. toJSON()
   3. unsubscribe()
5. Related pages for Push API

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