Progressive Web Apps (PWA): Building Modern Web Experiences
August 30, 2024•1 min read
PWAService WorkersWeb DevelopmentMobile
# Progressive Web Apps (PWA): Building Modern Web Experiences
Progressive Web Apps combine the best of web and mobile apps, providing native app-like experiences through web technologies.
## PWA Features
### Service Workers
Enable offline functionality:
```typescript
// service-worker.ts
self.addEventListener('install', (event) => {
event.waitUntil(
caches.open('v1').then((cache) => {
return cache.addAll([
'/',
'/styles.css',
'/app.js',
]);
})
);
});
self.addEventListener('fetch', (event) => {
event.respondWith(
caches.match(event.request).then((response) => {
return response || fetch(event.request);
})
);
});
```
### Web App Manifest
Define app metadata:
```json
{
"name": "My App",
"short_name": "App",
"start_url": "/",
"display": "standalone",
"background_color": "#ffffff",
"theme_color": "#000000",
"icons": [
{
"src": "/icon-192.png",
"sizes": "192x192",
"type": "image/png"
}
]
}
```
### Registration
```typescript
if ('serviceWorker' in navigator) {
navigator.serviceWorker.register('/sw.js');
}
```
## Benefits
- Offline functionality
- Installable on devices
- Push notifications
- Fast loading
- Responsive design
## Conclusion
PWAs provide native app experiences through web technologies. Implement service workers and manifests to enhance user experience.