Jeremy Keith has written a new book all about service workers and offline functionality that releases at the end of the month. The first chapter is posted on A List Apart. Now that the latest versions of iOS and macOS Safari support service workers, I can’t think of a better time to learn about how progressive web apps work under the hood. In fact, here’s an example of a simple offline site and a short series on making web apps work offline.
News of Jeremy’s book had me going back through his previous book, Resilient Web Design, where I half-remembered this super interesting quote from Chapter 4:
If you build something using web technologies, and someone visits with a web browser, you can’t be sure how many of the web technologies will be supported. It probably won’t be 100%. But it’s also unlikely to be 0%. Some people will visit with iOS devices. Others will visit with Android devices. Some people will get 80% or 90% of what you’ve designed. Others will get just 20%, 30%, or 50%. The web isn’t a platform. It’s a continuum.
I love this idea of the web as a continuum that’s constantly improving and growing over time and so I’m sure Jeremy’s latest book will be just as fun and interesting.
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