好猛的網頁快取，即使線都能瀏覽
範例程式碼
https://developers.google.com/web/fundamentals/primers/service-workers
chrome://inspect/#service-workers chrome://serviceworker-internals
好猛的網頁快取，即使線都能瀏覽
https://developers.google.com/web/fundamentals/primers/service-workers
chrome://inspect/#service-workers chrome://serviceworker-internals
