nodejs socketio code example
Example 1: socket io node js
npm install socket.io
Example 2: socket io nodejs
const express = require('express');const app = express();const http = require('http');const server = http.createServer(app);const { Server } = require("socket.io");const io = new Server(server);app.get('/', (req, res) => { res.sendFile(__dirname + '/index.html');});io.on('connection', (socket) => { console.log('a user connected');});server.listen(3000, () => { console.log('listening on *:3000');});
Example 3: socket io
npm install --save socket.io
Example 4: node socket.io send
io.on('connect', onConnect);
function onConnect(socket){
socket.emit('hello', 'can you hear me?', 1, 2, 'abc');
socket.broadcast.emit('broadcast', 'hello friends!');
socket.to('game').emit('nice game', "let's play a game");
socket.to('game1').to('game2').emit('nice game', "let's play a game (too)");
io.in('game').emit('big-announcement', 'the game will start soon');
io.of('myNamespace').emit('bigger-announcement', 'the tournament will start soon');
io.of('myNamespace').to('room').emit('event', 'message');
io.to(`${socketId}`).emit('hey', 'I just met you');
socket.emit('question', 'do you think so?', function (answer) {});
socket.compress(false).emit('uncompressed', "that's rough");
socket.volatile.emit('maybe', 'do you really need it?');
socket.binary(false).emit('what', 'I have no binaries!');
io.local.emit('hi', 'my lovely babies');
io.emit('an event sent to all connected clients');
};