Offline.js

Offline.js is a JavaScript library that monitors internet connectivity and provides a better user experience when connections are lost or restored. It automatically detects when a user goes offline or comes back online and displays customizable notifications. Offline.js can be configured to check connectivity by attempting requests to specified URLs at regular intervals. The library includes built-in UI themes and allows developers to respond to connectivity changes with custom handlers. It helps prevent user frustration by clearly communicating connection status and can queue failed requests for retry when connectivity returns. Offline.js is useful for web applications that need to handle unreliable network conditions gracefully.