The simplest PWA to demonstrate how to speed up slow apps and add to homescreen / install to desktop.
- index.php has the required Manifest in the head section.
- An install button is hidden by default on index.php.
- The install button is displayed when PWA is ready to install.
- page1.php has a two second sleep to emulate slow server-side code.
- page2.php has a one second sleep and dynamic content (shows the current time, with seconds).
- The two slow pages are cached to load instantly, and page2 still has dynamic content.
- App works offline.
- Viewing page2 offline shows the last-cached time.
- As soon as networking comes back online, the clock starts ticking again.
Have fun!
Thoughts and to dos:
- How can we capture form POSTs when offline, to send them when the network comes back up?
- What's the best way to prevent certain user actions when offline?
- How can we disable caching on certain URLs? (Useful for lazy loading quick-changing content).