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In this article, I will show you how to add a notification to your site and display it each time that there is a new version of the service worker available.
You’ll also learn how to refresh the page, so that the user is up to date and has the latest version of any cached files.
Firstly, the browser checks to see if there has been an update to the service worker file.
If you fire them up and head over to the Application tab and with the Service Workers menu option selected, you should notice your service worker is installed for the current page.If a new version is discovered, the event will be fired.If this event is fired, we then need to check if a new service worker has been acquired and assign it to a new variable as we will be using this at a later stage.Let’s take what we’ve learnt from the flow above and apply the code changes to our web page.We are going to be making the changes below to our file. Let’s break it down step by step in order to get a better understanding of the flow.
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Now that we have determined that there is a new service worker waiting to be installed, we can then display a notification at the bottom of our page notifying the user that there is a new version available.