How do Event Emitters and Observables differ in JavaScript?

Can you explain the differences between Event Emitters and Observables in JavaScript?

Sure! Event Emitters are part of Node.js and allow you to emit and listen for events. Observables, on the other hand, are part of the RxJS library and provide a more powerful way to handle asynchronous data streams.

What are the main use cases for each?

Event Emitters are great for handling events in Node.js applications, like user interactions or server responses. Observables are ideal for managing complex asynchronous data flows, especially in Angular applications.

Can you give an example of how to use each?

Certainly! For Event Emitters, you might create an instance and use on to listen for events. For Observables, you would use the Observable constructor and subscribe to it to receive data.

Which one is better for performance?

It depends on the context. Event Emitters are lightweight and faster for simple event handling, while Observables offer more features but can introduce overhead. Choose based on your specific needs.