How can I implement an event bus in my application?

How can I implement an event bus in my application?

Implementing an event bus involves creating a central hub for events to be published and subscribed to. Would you like a code example?

Yes, please provide a simple code example.

Here's a basic example in JavaScript:

class EventBus {
    constructor() {
        this.listeners = {};
    }

    on(event, listener) {
        if (!this.listeners[event]) {
            this.listeners[event] = [];
        }
        this.listeners[event].push(listener);
    }

    emit(event, data) {
        if (this.listeners[event]) {
            this.listeners[event].forEach(listener => listener(data));
        }
    }
}

const bus = new EventBus();

bus.on('testEvent', (data) => {
    console.log('Event received:', data);
});

bus.emit('testEvent', { message: 'Hello, World!' });

This creates an event bus where you can listen for and emit events.

What are the benefits of using an event bus?

Using an event bus decouples components, making your application more modular and easier to maintain. It also simplifies communication between different parts of your app.