socket.io linking local jQuery gives 404

I want to use a local version of jQuery on my socket.io app which runs on port 8000

when I try to link it I get 404. I tried all the below:

<script src=" js/vendor/jquery-1.8.3.min.js"></script>
<script src=" http://localhost/js/vendor/jquery-1.8.3.min.js"></script>
<script src=" http://localhost:8000/js/vendor/jquery-1.8.3.min.js"></script>

I don't want to use google CDN. How do I link it?

It should look something like

var express = require('express'),
    http = require('http');

var app = express();

app.configure ( function () {
    app.use('/js', express.static(__dirname + '/js'));
});

var server = http.createServer(app).listen(8000);

var io = require('socket.io').listen(server);  // Your app passed to socket.io

io.sockets.on('connection', function (socket) { console.log('socket connected') });

And place your jquery file in your app/js/vendor directory ;)