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Update progressive-web-app.md (#17432)

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Luke Latham 2020-03-23 21:51:12 -05:00 committed by GitHub
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aspnetcore/blazor/progressive-web-app.md
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@ -5,7 +5,7 @@ description: Learn how to build a Blazor-based Progressive Web Application (PWA)
monikerRange: '>= aspnetcore-3.1'
ms.author: riande
ms.custom: mvc
ms.date: 03/12/2020
ms.date: 03/23/2020
no-loc: [Blazor, SignalR]
uid: blazor/progressive-web-app
---
@ -120,7 +120,7 @@ The cache-first strategy is valuable because:
* **It ensures reliability.** – Network access isn't a boolean state. A user isn't simply online or offline:
* The user's device may assume it's online, but the network might be so slow as to be impractical to wait for.
* he network might return invalid results for certain URLs, such as when there's a captive WIFI portal that's currently blocking or redirecting certain requests.
* The network might return invalid results for certain URLs, such as when there's a captive WIFI portal that's currently blocking or redirecting certain requests.
This is why the browser's `navigator.onLine` API isn't reliable and shouldn't be depended upon.