App Pwa — Free App Development Tutorial
Learn App Pwa in App Development with a free, beginner-friendly tutorial, examples and practice for Indian students on Syllab.in.
TL;DR: Learn App Pwa in App Development with a free, beginner-friendly tutorial, examples and practice for Indian students on Syllab.in.
Written & reviewed by the Syllab.in Academic Team (CBSE/NCERT subject experts) · Updated
App Pwa in App Development
A Progressive Web App (PWA) is a web app that uses modern web APIs to deliver app-like experiences on any device.
PWAs can be installed on a user's home screen, work offline, send push notifications, and load instantly.
A Service Worker is a JavaScript file that runs in the background, intercepting network requests and enabling offline caching.
The Web App Manifest is a JSON file that defines how the app looks when installed (name, icon, colors, display mode).
PWAs must be served over HTTPS and meet Lighthouse's installability criteria to be installable.
App Pwa — Syntax
// Register a Service Worker
if ('serviceWorker' in navigator) {
navigator.serviceWorker.register('/sw.js')
.then(() => console.log('SW registered'))
.catch(console.error);
}
Learn App Pwa step by step with Syllab's free interactive App Development tutorial — runnable code examples, practice exercises and instant AI feedback, all free with no signup. Explore the full App Development course →