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🔧 Как настроить Service Worker для офлайн-режима

Service Worker — это JS-скрипт, работающий в фоне. Он позволяет кэшировать ресурсы и обслуживать запросы без подключения к сети.

Почему важно:

🎱 Доступ к сайту без интернета

🎱 Быстрая загрузка повторно посещаемых страниц

🎱 Гибкий контроль над кэшированием

Как внедрить:

1. Регистрируем Service Worker:

if ('serviceWorker' in navigator) {
navigator.serviceWorker.register('/sw.js')
.then(() => console.log('SW зарегистрирован'))
.catch(err => console.error('SW ошибка:', err));
}


2. Создаем sw.js:

const CACHE_NAME = 'app-cache-v1';
const urlsToCache = ['/', '/index.html', '/styles.css'];

self.addEventListener('install', event => {
event.waitUntil(
caches.open(CACHE_NAME).then(cache => cache.addAll(urlsToCache))
);
});


3. Обслуживаем запросы:

self.addEventListener('fetch', event => {
event.respondWith(
caches.match(event.request)
.then(response => response || fetch(event.request))
);
});


4. Обновляем кэш при необходимости:

self.addEventListener('activate', event => {
event.waitUntil(
caches.keys().then(keys =>
Promise.all(keys.filter(key => key !== CACHE_NAME).map(key => caches.delete(key)))
)
);
});


💡 С помощью Service Worker можно создавать PWA, ускорять загрузку и обеспечить стабильную работу в нестабильных сетях.

🐸 Библиотека фронтендера

#буст
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🔧 Как настроить Service Worker для офлайн-режима

Service Worker — это JS-скрипт, работающий в фоне. Он позволяет кэшировать ресурсы и обслуживать запросы без подключения к сети.

Почему важно:

🎱 Доступ к сайту без интернета

🎱 Быстрая загрузка повторно посещаемых страниц

🎱 Гибкий контроль над кэшированием

Как внедрить:

1. Регистрируем Service Worker:

if ('serviceWorker' in navigator) {
navigator.serviceWorker.register('/sw.js')
.then(() => console.log('SW зарегистрирован'))
.catch(err => console.error('SW ошибка:', err));
}


2. Создаем sw.js:

const CACHE_NAME = 'app-cache-v1';
const urlsToCache = ['/', '/index.html', '/styles.css'];

self.addEventListener('install', event => {
event.waitUntil(
caches.open(CACHE_NAME).then(cache => cache.addAll(urlsToCache))
);
});


3. Обслуживаем запросы:

self.addEventListener('fetch', event => {
event.respondWith(
caches.match(event.request)
.then(response => response || fetch(event.request))
);
});


4. Обновляем кэш при необходимости:

self.addEventListener('activate', event => {
event.waitUntil(
caches.keys().then(keys =>
Promise.all(keys.filter(key => key !== CACHE_NAME).map(key => caches.delete(key)))
)
);
});


💡 С помощью Service Worker можно создавать PWA, ускорять загрузку и обеспечить стабильную работу в нестабильных сетях.

🐸 Библиотека фронтендера

#буст

BY Библиотека фронтендера | Frontend, JS, JavaScript, React.js, Angular.js, Vue.js




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