ServiceWorker pwa缓存

index.js

if ( navigator.serviceWorker ) {

    console.log("cache index")

    window.addEventListener("load", function(){
        navigator.serviceWorker
            .register('/serversWork.js')
            .then(function(registration) {
                console.log('service worker 注册成功')
            })
            .catch(function(err) {
                console.log('servcie worker 注册失败')
            })
    })
    
}else{
    console.log("chche error")
}

serversWork.js

let cachelist = [
    "/index.js",
    // "/favicon.ico",
    "/_nuxt/app.js",
    "/_nuxt/runtime.js",
    "/_nuxt/commons.app.js",
    "/_nuxt/pages/index.js",
    // "/_nuxt/930f2fe73ad8f77ebbc1.js",
]

self.addEventListener('install', e => {
    e.waitUntil(
        caches.open('my-cache').then(function (cache) {
            // console.log("cache success")
            return cache.addAll(cachelist)
        })
    )
})

// 拦截所有请求事件
// 如果缓存中已经有请求的数据就直接用缓存，否则去请求数据
self.addEventListener('fetch', e => {
    e.respondWith(
        caches.match(e.request).then(function (response) {
            
            if ( response ) {
                return response
            }

            return fetch( e.request );

        })
    )
})