cats-pwa
Simply shows cute cat pics
How to run:
As we have no server, let's use the python inbuilt http server, so go into the project dir and then run,
python -m SimpleHTTPServer
it will run your corrent dir on port 8000, now thing would be accessible on localhost:8000.
Open localhost:8000, you should see cute cat pics.
Go and check application tab in chrome to see if service worker is installed/working and caching stuff.
Now if you go offline, you can still see your app working.
Also:
On chrome, you will see + icon on the right corner of the address bar, telling you to install the app, as it is a PWA, it can be installed as a desktop app, and same happens on mobile.
Install it and try it out.
Experiment with it
When service worker installs, it caches the static assets like html, js and css.
Now if you make changes to your assets, we want the new version in the cache, so we need to remove the old cache.
To do this, we simply change the cacheVersion variable in our sw.js, doing this would kick the new service worker install ( due to change in service worker code ) and now as it installs, we download the new resources.
Since the old cache still exists, we simply remove the old cache when service worker activates (in the activate cycle )