ServiceWorkerRegistration.active

在此页

active 特性为 ServiceWorkerRegistration interface returns a service worker whose ServiceWorker.state is activated . This property is initially set to null .

An active worker controls a ServiceWorkerClient if the client's URL falls within the scope of the registration (the scope option set when ServiceWorkerContainer.register is first called.)

注意 : This feature is available in Web 工作者 .

var serviceWorker = serviceWorkerRegistration.active;

A ServiceWorker object's property, if it is currently in an activated 状态。

规范	状态	注释
服务工作者 The definition of 'ServiceWorkerRegistration.active' in that specification.	工作草案	初始定义。

The compatibility table in 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
`active`	Chrome 40	Edge 17 17 16 Disabled Disabled From version 16: this feature is behind the `Enable service workers` preference.	Firefox 44 44 Extended Support Releases (ESR) before Firefox 78 ESR do not support service workers and the Push API.	IE No	Opera 27	Safari 11.1	WebView Android 40	Chrome Android 40	Firefox Android 44	Opera Android 27	Safari iOS 11.3	Samsung Internet Android 4.0