How to run JavaScript code once the connection is established?

As a Node.js newbie I am trying to change the Smartphone Remote Control with Node.js and Socket.io example by Nick Anastasov so that a password is not required.

In the original source code the app.js file sends { access : 'granted' } after the word kittens has been entered into a web form and the script.js starts its main tasks, for example unblurs the web page:

socket.on('access', function(data) {
    if (data.access === "granted") {  // XXX Tried removing this line

        blurredElements.removeClass('blurred');
        form.hide();

        $(window).on('hashchange', function() {
            // ....
        });

        socket.on('navigate', function(data) {
            // ....
        });
    }
});

I have changed the app.js so that it does not emit access at all.

Then I have tried removing just the line if (data.access === "granted") from script.js, but this of course hasn't worked: the web page stays blurred, because no access event is received anymore (neither granted, nor denied).

My question is: how should I please change the above code, so that it is run once the connection is established?

Should I maybe use socket.on('connect') or socket.on('connection') or is it same problem (since there is no string connect being sent)?

UPDATE:

As suggested by Brad (thank you!) I have changed the string in script.js from "access" to "connection", but the web page stays blurred - here is the complete source code:

$(function() {
    Reveal.initialize({
        history: true
    });

    var socket = io();
    var presentation = $('.reveal');

    socket.on('connection', function(data){ // XXX changed this

                presentation.removeClass('blurred'); // XXX not called
                var ignore = false;

                $(window).on('hashchange', function(){
                        if (ignore){
                                return;
                        }
                        var hash = window.location.hash;
                        socket.emit('slide-changed', {
                                hash: hash
                        });
                });

                socket.on('navigate', function(data){
                        window.location.hash = data.hash;
                        ignore = true;
                        setInterval(function () {
                                ignore = false;
                        },100);
                });
    });
});

And here is the complete app.js source code:

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

var port = process.env.PORT || 8080;
var io = require('socket.io').listen(app.listen(port));
app.use(express.static(__dirname + '/public'));

var presentation = io.on('connection', function (socket) {
    socket.on('slide-changed', function(data){
                presentation.emit('navigate', {
                        hash: data.hash
                });
    });
});