In this recipe, we are going to use the service worker to test the waitUntil
method, which will delay the install method of the service worker life cycle until the process of opening caches and saving a page to the cache.
To get started with service workers, you will need to have the service worker experiment feature turned on in your browser settings. If you have not done this yet, refer to the Setting up service workers recipe of Chapter 1, Learning Service Worker Basics. Service workers only run across HTTPS. To find out how to set up a development environment to support this feature, refer to the following recipes of Chapter 1, Learning Service Worker Basics: Setting up GitHub pages for SSL, Setting up SSL for Windows, and Setting up SSL for Mac.
Follow these instructions to set up your file structure:
Download files from the following location:
https://github.com/szaranger/szaranger.github.io/blob/master/service-workers/10/03/
Open a browser...