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

**(True or False)** The cache-on-demand strategy can be used with dynamic caching.

(True or False) The cache-on-demand strategy can be used with dynamic caching.

To show the user something quickly and update it whenever a new version is available

To provide an error message when a user requests an uncached HTML page

To prevent the user from accessing the internet

What is the purpose of a custom offline-fallback page?

What is the purpose of a custom offline-fallback page?

**(Select all that apply.)** Which strategy can only be implemented on the page's main JavaScript thread and *not* in the service worker?

(Select all that apply.) Which strategy can only be implemented on the page’s main JavaScript thread and not in the service worker?

Your web application uses a CSS file that's updated frequently. You want the latest version of the file to be served to the user. Which service worker strategy is the best choice?

Your web application uses a CSS file that’s updated frequently. You want the latest version of the file to be served to the user. Which service worker strategy is the best choice?

You want to reduce the loading time for the frequently accessed content on your website. Which service worker strategy should you implement?

You want to reduce the loading time for the frequently accessed content on your website. Which service worker strategy should you implement?

Test your understanding of various caching strategies with their pros and cons.

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

Quiz on Caching Strategies