service worker
service worker is javascript that can intercept the process to fetch resources.example
ServiceWorker.js
1. use the url as a key to match the resource from the cache.2. if the resource does not match, fetch it from online and if the response is ok(200), put it to the cache.
- caches.has()
- check existence of the cache
- caches.open()
- get the cache
- cache.match()
- match the resource from the cache
- cache.put()
- put the resource to the cache
html/PWAManager.js
- navigator.serviceWorker.register()
- register the service worker
- navigator.serviceWorker.getRegistration()
- get the service worker registration
- registration.unregister()
- unregister the service worker
- caches.has()
- check existence of the cache
- caches.open()
- get the cache
- caches.delete()
- delete the cache
- cache.keys()
- get all keys used to match the resource from the cache
- cache.delete()
- delete the resource from the cache
- cache.put()
- put the resource to the cache