Connect to Socket.IO Server

Server

var express = require('express');
var app = express();
var logger = require('morgan');
var server = require('http').Server(app);
var io = require('socket.io')(server);
app.use(express.static('public'));

app.use(logger('dev'));
server.listen(14000);

app.get('/', function (req, res) {
    res.sendFile(__dirname + '/public/index.html');
});

io.on('connection', function (socket) {
    console.log("Connected : " + socket.client.id);
});

Client

$(document).ready(function () {
    var socket = io.connect('http://localhost:14000');
});

References
https://socket.io/docs/#Using-with-Express