To delete users from a chat room in a web application using WebSockets and Node.js, you will need to implement a mechanism for removing the user's connection from the list of active connections.
Here is an example of how you could do this using the
ws
library for WebSockets in Node.js:
const WebSocket = require('ws');
const wss = new WebSocket.Server({ port: 8080 });
const connections = [];
wss.on('connection', (ws) => {
connections.push(ws);
ws.on('close', () => {
connections = connections.filter((conn) => conn !== ws);
});
});
In this example, the
connections
array is used to store the list of active connections. When a new connection is established, it is added to the array using the
push
method. When a connection closes, it is removed from the array using the
filter
method.
You can then use the
connections
array to broadcast messages or perform other actions on the chat room's users. For example, you could use the
forEach
method to iterate over the connections and send a message to each one:
connections.forEach((conn) => {
conn.send('Hello, everyone!');
});