What is the event bus in Vue 3?

What is the event bus in Vue 3?

The event bus in Vue 3 is a pattern used for communication between components, allowing them to emit and listen for events.

How do I implement an event bus in my Vue 3 application?

You can create a new Vue instance as an event bus and use it to emit and listen for events across components.

Can you show me a code example of using the event bus?

Sure! Here's a simple example:

// eventBus.js
import { createApp } from 'vue';
const eventBus = createApp({});
export default eventBus;

// In Component A
import eventBus from './eventBus';
eventBus.emit('myEvent', data);

// In Component B
import eventBus from './eventBus';
eventBus.on('myEvent', (data) => {
  console.log(data);
});

Are there any drawbacks to using the event bus?

Yes, using an event bus can lead to harder-to-maintain code if overused, as it can create hidden dependencies between components.