What are some practical use cases for event emitters?

What are some practical use cases for event emitters?

Event emitters are great for handling asynchronous events in applications. For example, in a web app, you can use them to manage user interactions like clicks or form submissions.

Can you give me a specific example of how they are used in a web application?

Sure! In a chat application, an event emitter can be used to notify users when a new message arrives, allowing the UI to update in real-time.

Are there any performance considerations when using event emitters?

Yes, while event emitters are efficient, too many listeners can lead to memory leaks. It's important to manage listeners properly.

How do event emitters compare to other patterns like callbacks or promises?

Event emitters provide a more flexible way to handle multiple events and listeners compared to callbacks or promises, which are more linear.