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PWA专题 - ServiceWorker #41

kangschampagne opened this issue May 10, 2018 · 0 comments

PWA专题 - ServiceWorker #41

kangschampagne opened this issue May 10, 2018 · 0 comments


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@kangschampagne kangschampagne commented May 10, 2018

什么是 ServiceWorker?

Service Workers 只是后台运行的 worker 脚本。它们是用 JavaScript 编写的,只需短短几行代码,它们便可使开发者能够拦截网络请求,处理推送消息并执行许多其他任务。有几个特点:运行在它自己的全局脚本上下文中;不绑定到具体的网页;无法修改网页中的元素,因为它无法访问 DOM;只能使用 HTTPS;

在学习这个好用的家伙之前,我创建了一个 GitHub page,因为它使用 https,可以很方便的进行线上的调试。仓库地址:

在学习 ServiceWorker 之前,我们应该熟悉哪些 Web API 呢?

  1. WebAPI - Cache
  2. WebAPI - FetchEvent


  1. 缓存策略 - network and cache 解释
  2. 缓存策略 - cache only 解释
  3. 缓存策略 - cache and update 解释
  4. 缓存策略 - cache update and refresh 解释
  5. 缓存策略 - embedded fallback 解释
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