WorkerGlobalScope：caches 属性
Baseline
Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since 2018年4月.
WorkerGlobalScope 接口的 caches 只读属性返回与当前上下文相关联的 CacheStorage 对象。此对象提供了诸如存储用于离线使用的资源，并生成对请求的自定义响应等功能。
值
一个 CacheStorage 对象。
示例
以下示例展示了在 service worker 上下文中应该如何运用缓存对资源进行离线存储。
js
self.addEventListener("install", (event) => {
event.waitUntil(
self.caches
.open("v1")
.then((cache) =>
cache.addAll([
"/",
"/index.html",
"/style.css",
"/app.js",
"/image-list.js",
"/star-wars-logo.jpg",
"/gallery/",
"/gallery/bountyHunters.jpg",
"/gallery/myLittleVader.jpg",
"/gallery/snowTroopers.jpg",
]),
),
);
});
规范
| Specification |
|---|
| Service Workers # self-caches |
浏览器兼容性
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