Now supports cross-browser push notifications

Push notifications were standardized in 2016 with the release of the Push API and Notification API, which are part of the W3C's Web Applications Working Group. These APIs provide web developers with the necessary functionality to incorporate push notifications into their web applications and let users receive and interact with notifications on their web browsers. Push messages are notifications sent to a user's web browser from a website or application that the user has previously granted permission to send notifications. These messages can be used to alert users of new content or updates, remind them of upcoming events or deadlines, or provide other important information. Push messages are especially useful for apps that need to provide users with timely and relevant information, such as news or sports apps, or for e-commerce sites that want to send users notifications about special offers or sales.

To register for push notifications, first check if your browser supports push notifications by checking the and object in the and object.serviceWorkerPushManagernavigatorwindow

 The Safari browser for iOS and iPadOS supports push notifications starting with version 16.4, but only for apps that have been added to the home screen. Apple calls these home screen web apps.

If push notifications are supported, use the and keyword to register a service worker and subscribe to push notifications. Here's an example of how to do this with JavaScript:asyncawait

// Check if the browser supports push notifications.
if ("serviceWorker" in navigator && "PushManager" in window) {
   
   
  try {
   
   
    // Register the service worker.
    const swReg = await navigator.serviceWorker.register("/sw.js");

    // Subscribe for push notifications.
    const pushSubscription = await swReg.pushManager.subscribe({
   
   
      userVisibleOnly: true
    });

    // Save the push subscription to the database.
    savePushSubscription(pushSubscription);
  } catch (error) {
   
   
    // Handle errors.
    console.error("Error subscribing for push notifications.", error);
  }
} else {
   
   
  // Push notifications are not supported by the browser.
  console.error("Push notifications are not supported by the browser.");
}