vue3 websocket

Vue3 does not come with built-in support for WebSockets. However, you can use any JavaScript WebSocket library with Vue3. Here are the basic steps to use WebSockets in Vue3:

1. Install a WebSocket library like `socket.io`, `ws`, or `stomp.js` using a package manager like `npm` or `yarn`.

2. Import the WebSocket library in your Vue3 component.

3. Create a WebSocket instance and connect to the server.

4. Listen for WebSocket events like `open`, `message`, `error`, and `close`.

5. Update the Vue3 component's data or trigger methods based on the WebSocket events.

Here's an example using the `socket.io` library:

<template>
  <div>
    <p v-for="message in messages" :key="message.id">{{ message.text }}</p>
  </div>
</template>

<script>
import io from 'socket.io-client';

export default {
  data() {
    return {
      messages: []
    };
  },
  created() {
    const socket = io('http://localhost:3000');
    socket.on('connect', () => {
      console.log('WebSocket connected');
    });
    socket.on('message', (message) => {
      console.log('WebSocket message received', message);
      this.messages.push(message);
    });
    socket.on('disconnect', () => {
      console.log('WebSocket disconnected');
    });
  }
};
</script>

In this example, we import the `socket.io-client` library and create a WebSocket instance that connects to a server running on `http://localhost:3000`. We listen for the `connect`, `message`, and `disconnect` events and update the Vue3 component's `messages` data array with each received message.