Discover how to build Progressive Web Apps with offline support, push notifications, responsive design, and native-like experiences. Gain insights into service workers, caching strategies, and app optimization.

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Web development is challenging, but progressive web applications provide a significant advantage over traditional web applications by enabling capabilities such as installation to the device, offline access, and push notifications.

You’ll start by learning about PWAs and understanding the core tenets of a PWA. Next, you’ll learn to implement features like offline support, intercepting network requests, and app installation banners using service worker APIs. You’ll then progress to caching strategies for improved performance, IndexedDB for storing data locally, and background syncing for unstable networks. Finally, you’ll cover responsive web design and native-device APIs to make your PWA feel and look like a native app.

After completing this course, you can build progressive apps with engaging and responsive experiences. You’ll also be prepared to optimize your existing web apps as PWAs, extending their reach and improving performance.

Building Progressive Web Applications

# Requesting notification permission

We can use the `Notification.requestPermission()` method to ask the user for notification permission. Calling this method displays a prompt asking the user if they consent to receive notifications.



Notification.requestPermission(status => {
  if (status === 'granted') {
    console.log("Permission Granted!")
    showNotification();
  }
})

By requesting notification permission, we also implicitly request the push notification permission. The `status` returned by the `requestPermission()` will be either `granted` or `denied`, indicating whether the user consented to receive notifications.


Explore the steps to set up web push notifications on a website.


Introduction

Understanding the App Manifest

The Service Workers

Caching Using Service Workers

Cache Strategies

Offline Image Viewer

IndexedDB

Note-Taking App

Creating App-Like UI and UX

Offline Experience with Background Sync API

Web Push Notifications (Notification API, Push API)

Native Device Features

The Photo-Sharing App

Wrapping Up

Implementing Notifications

Requesting notification permission