Can you help me fix my code? [Socket.io not working.]

[mcherryportfolio]

Hello, I'm working on a html online video game. I need help I think socket.io is not working.

This is the code down below.

var express = require('express');
var app = express();
var serv = require('http').Server(app);

app.get('/',function(req, res) {
res.sendFile(__dirname + '/client/index.html');
});
app.use('/client',express.static(__dirname + '/client'));

serv.listen(2000);
console.log("Server started.");

var SOCKET_LIST = {};

var io = require('socket.io')(serv,{});
io.sockets.on('connection', function(socket){
socket.id = Math.random();
socket.x = 0;
socket.y = 0;
SOCKET_LIST[socket.id] = socket;
console.log('socket connection');
});

setInterval(function() {
for(var i in SOCKET_LIST){
var socket = SOCKET_LIST[i];
socket.x++;
socket.y++;
socket.emit('newPostion',{
x:socket.x,
y:socket.y,
});
}
},1000/25);

The output on console is : [See Photo]