Very simple code to demonstrate Progressive Web Apps.

This demo app runs on localhost.

npm install http-server -g
http-server -c-1 # with cache disabled

Then open http://localhost:8080 with Chrome.

Change cacheStorageKey in sw.js to update app version.

• Why -c-1 to disable cache?

sw.js can be cached by HTTP Caches, then in debugging we could get unexpected behaviors. Disable the cache to simplify the problem.

MIT