[PWA] Check Online Status by using the NavigatorOnLine API

最新推荐文章于 2024-08-06 13:51:50 发布

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最新推荐文章于 2024-08-06 13:51:50 发布

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原文链接：http://www.cnblogs.com/Answer1215/p/9255725.html

本文介绍如何使用NavigatorOnLine API及在线/离线事件来检测应用是否处于离线状态，并据此禁用应用的消息发送功能。

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Even if you have your application fully cached, you couldn’t perform any external request without internet connection. That’s why in order to build an offline-capable application, you must know when it’s actually offline.

This lesson shows you how to use the NavigatorOnLine API and online/offline events in order to disable the functionality to send messages of the application.

    this.online = navigator.onLine
    window.addEventListener('online', () => (this.online = true))
    window.addEventListener('offline', () => {
      this.online = false
    })

转载于:https://www.cnblogs.com/Answer1215/p/9255725.html