How to create a PWA (Progressive Web App) with Edge
Jul 28, 2025 am 01:07 AM
The core steps of creating a PWA include: 1. Prepare a Web project that can be accessed via HTTPS; 2. Create and configure the manifest.json file to define application metadata; 3. Write and register Service Worker to implement offline caching; 4. Use the Lighthouse tag of Edge Developer Tools for compliance detection and optimization; 5. Test the installation experience and resource cache status in the Application tab. These steps allow you to quickly build basic PWA applications with offline access and installability.
Creating a PWA (Progressive Web Application) is not complicated, especially when using Microsoft Edge's developer tools, the entire process can be more intuitive and efficient. The Edge browser has built-in functions to help you debug and optimize PWA, allowing you to quickly build a modern web application with offline access and installation capabilities.
Get your web application ready
To create a PWA, first you need a basic web project. This project should have been deployed online, or at least run locally. The core elements of a PWA include:
- A qualified
manifest.jsonfile - A Service Worker script for caching and offline processing
- The website must be provided through HTTPS (except for local development environments)
If you don't have this content yet, you can start with a simple HTML page and gradually add the necessary elements.
For example:
You can first create a manifest.json file and introduce it in HTML via <link rel="manifest" href="/manifest.json"> . This file contains information such as application name, icon, startup method, etc.
Check PWA Compliance with Edge Developer Tools
Microsoft Edge is based on the Chromium kernel, so its developer tools are very similar to Chrome. Open DevTools (F12 or right-click the page to select "Check"), and switch to the Lighthouse tab.
Here, you can run a PWA audit, the system will automatically detect whether your website meets PWA standards and provide suggestions for improvement. For example:
- Whether you have registered Service Worker
- Whether offline loading is supported
- Whether the manifest file is configured and the appropriate icon and theme color is set
If you find a problem, Lighthouse usually prompts where you need to modify it. For example, if your manifest lacks certain fields, it will indicate which ones are necessary.
Add Service Worker to implement offline functions
Service Worker is a key component of PWA, which is responsible for intercepting network requests and managing caches, so that your application can continue to run in a network-free environment.
You can create a file called service-worker.js and register it in the main page:
if ('serviceWorker' in navigator) {
navigator.serviceWorker.register('/service-worker.js')
.then(reg => console.log('Registered successfully', reg.scope))
.catch(err => console.error('Register failed', err));
} Then, add a cache policy in service-worker.js . For example, using the Cache API to cache static resources:
const CACHE_NAME = 'my-site-cache-v1';
const urlsToCache = ['/index.html', '/styles/main.css', '/script.js'];
self.addEventListener('install', event => {
event.waitUntil(
caches.open(CACHE_NAME)
.then(cache => cache.addAll(urlsToCache))
);
});
self.addEventListener('fetch', event => {
event.respondWith(
caches.match(event.request).then(response => response || fetch(event.request))
);
});Although this part of the logic seems a bit technical, it actually only needs to be slightly adjusted according to your own resource path to achieve basic offline access.
Test the installation experience on Edge
When your PWA meets certain conditions, Edge will automatically prompt the user to "install" the application. You can also manually trigger the installation process, or simulate the user clicking "Add to Home Screen".
Under the Application tab of DevTools, you can view:
- Is the Manifest file parsed correctly?
- Whether the Service Worker is registered and activated
- Is there any cache storage available
In addition, you can switch to the "Simulate" section to set the device type and add the home screen prompts.
Basically that's it. Although creating a complete PWA involves many details, such as push notifications, background synchronization and other functions, the above steps are enough to give your application basic PWA features.
The above is the detailed content of How to create a PWA (Progressive Web App) with Edge. For more information, please follow other related articles on the PHP Chinese website!
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