The navigator.setAppBadge() method allows installed web applications to display an application badge, typically a dot or number shown alongside the application's icon on the device's home screen or application dock.

Learning resources on MDN

• Navigator: clearAppBadge() method
• Badging API

Browser support

• Chrome 81 Released on 2020-04-07
• Chrome Android ❌
• Edge 81 Released on 2020-04-13
• Firefox ❌
• Firefox for Android ❌
• Safari 17 Released on 2023-09-18
• Safari on iOS 16.4 Released on 2023-03-27

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