55 lines
1.4 KiB
JavaScript
55 lines
1.4 KiB
JavaScript
let CACHE_STATIC_NAME = "static-v2";
|
|
let CACHE_DYNAMIC_NAME = "dynamic-v3";
|
|
|
|
self.addEventListener("install", function (event) {
|
|
console.log("[SW install]", event);
|
|
self.skipWaiting();
|
|
event.waitUntil(
|
|
caches.open(CACHE_STATIC_NAME).then((cache) => {
|
|
console.log("[SW precache]");
|
|
return cache.addAll(["/", "/index.html", "/offline.html", "/help/index.html", "/js/app.js"]);
|
|
}),
|
|
);
|
|
});
|
|
|
|
self.addEventListener("activate", function (event) {
|
|
console.log("[SW activate]", event);
|
|
event.waitUntil(
|
|
caches.keys().then((keys) => {
|
|
console.log("removing the old cache");
|
|
return Promise.all(
|
|
keys.map((key) => {
|
|
if (key !== CACHE_STATIC_NAME) {
|
|
return caches.delete(key);
|
|
}
|
|
}),
|
|
);
|
|
}),
|
|
);
|
|
return self.clients.claim();
|
|
});
|
|
|
|
self.addEventListener("fetch", function (event) {
|
|
event.respondWith(
|
|
caches.match(event.request).then((res) => {
|
|
console.log("res", res);
|
|
if (res) {
|
|
return res;
|
|
} else {
|
|
return fetch(event.request.url)
|
|
.then((res) => {
|
|
return caches.open(CACHE_DYNAMIC_NAME).then((cache) => {
|
|
cache.put(event.request.url, res.clone());
|
|
return res;
|
|
});
|
|
})
|
|
.catch(() => {
|
|
return caches.open(CACHE_STATIC_NAME).then((cache) => {
|
|
return cache.match("/offline.html");
|
|
});
|
|
});
|
|
}
|
|
}),
|
|
);
|
|
});
|