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In this example, the server object emits an “error” event if an error occurs while starting the server or handling requests. The server.on() method is used to listen for the “error” event, and a callback function is executed when the event is emitted. The callback function logs the error to the console.
Node.js also provides a built-in mechanism for handling unhandled exceptions. If an exception is thrown in a Node.js application and is not caught by any try/catch block, the application will terminate and log the exception to the console. However, you can register a listener for the uncaughtException event to handle uncaught exceptions and prevent the application from terminating. For example:
In this example, the process.on() method is used to register a listener for the uncaughtException event, and a callback function is executed when the event is emitted. The callback function logs the uncaught exception to the console and performs any necessary error handling tasks.
Overall, the Node.js event-driven programming model provides a robust mechanism for handling errors and exceptions in a flexible and customizable way. By listening to events and registering error handling functions, Node.js developers can ensure that their applications handle errors gracefully and provide a good user experience.
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