在此页

• 句法
• 范例
• 规范
• 浏览器兼容性
• 相关话题

type 只读特性在 Client interface indicates the type of client the service worker is controlling.

句法

var myClientType = client.type;
					

值

A string, representing the client type. The value can be one of

• "window"
• "worker"
• "sharedworker"

范例

// service worker client (e.g. a document)
function sendMessage(message) {
  return new Promise(function(resolve, reject) {
    // note that this is the ServiceWorker.postMessage version
    navigator.serviceWorker.controller.postMessage(message);
    window.serviceWorker.onMessage = function(e) {
      resolve(e.data);
    };
  });
}
// controlling service worker
self.addEventListener("message", function(e) {
  // e.source is a client object
  e.source.postMessage("Hello! Your message was: " + e.data);
  // Let's also post the type value back to the client
  e.source.postMessage(e.source.type);
});
					

规范

规范	状态	注释
服务工作者 The definition of 'type' 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
type	Chrome 60	Edge ≤79	Firefox 54	IE 不支持 No	Opera 47	Safari 不支持 No	WebView Android 60	Chrome Android 60	Firefox Android 54	Opera Android 44	Safari iOS 不支持 No	Samsung Internet Android 8.0

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。

元数据

• 最后修改： Apr 2, 2020

相关话题

1. 服务工作者 API
2. Client
3. 特性

   1. frameType
   2. id
   3. type
   4. url
4. 方法

   1. postMessage()
5. Related pages for Service Workers API

   1. 缓存
   2. CacheStorage
   3. Clients
   4. ExtendableEvent
   5. FetchEvent
   6. InstallEvent
   7. Navigator.serviceWorker
   8. NotificationEvent
   9. PeriodicSyncEvent
   10. PeriodicSyncManager
   11. PeriodicSyncRegistration
   12. ServiceWorker
   13. ServiceWorkerContainer
   14. ServiceWorkerGlobalScope
   15. ServiceWorkerRegistration
   16. SyncEvent
   17. SyncManager
   18. SyncRegistration
   19. WindowClient