59 lines
1.5 KiB
JavaScript
59 lines
1.5 KiB
JavaScript
const cacheName = "v1";
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const preCacheResources = [
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// 添加需要预缓存的资源列表
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"/.next/static",
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"/public",
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"/",
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"/index.html",
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"/styles/main.css",
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"/scripts/main.js",
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// 更多资源...
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];
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// 安装事件：预缓存关键资源
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self.addEventListener("install", (e) => {
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console.log("Service Worker: Installed");
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e.waitUntil(
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caches
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.open(cacheName)
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.then((cache) => {
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console.log("Service Worker: Caching Files");
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cache.addAll(preCacheResources);
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})
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.then(() => self.skipWaiting())
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);
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});
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// 激活事件：清理旧缓存
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self.addEventListener("activate", (e) => {
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console.log("Service Worker: Activated");
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e.waitUntil(
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caches.keys().then((cacheNames) => {
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return Promise.all(
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cacheNames.map((cache) => {
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if (cache !== cacheName) {
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console.log("Service Worker: Clearing Old Cache");
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return caches.delete(cache);
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}
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})
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);
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})
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);
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});
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// 尝试从网络获取资源，并将响应克隆到缓存
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const cacheClone = async (e) => {
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const res = await fetch(e.request);
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const resClone = res.clone();
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const cache = await caches.open(cacheName);
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await cache.put(e.request, resClone);
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return res;
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};
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// Fetch 事件：网络优先，然后缓存
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self.addEventListener("fetch", (e) => {
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e.respondWith(
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cacheClone(e)
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.catch(() => caches.match(e.request))
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.then((res) => res || fetch(e.request))
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);
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});
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