Simplest of backbone.js examples

You had some fundamental problems with your code to get the functionality that you required. I turned your code into a jsfiddle and you can see the working solution here.

http://jsfiddle.net/thomas/Yqk5A/

Code

<!DOCTYPE HTML>
<html>
<head>
<title>Tut</title>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.5.2/jquery.min.js"></script>
<script type="text/javascript" src="http://ajax.cdnjs.com/ajax/libs/underscore.js/1.1.4/underscore-min.js"></script>
<script type="text/javascript" src="http://ajax.cdnjs.com/ajax/libs/backbone.js/0.3.3/backbone-min.js"></script>
</head>
<body>

<input type="text" placeholder="Enter friend's name" id="input" />
<button id="add-input">Add Friend</button>

<ul id="friends-list">
</ul>
<script type="text/javascript" src="test.js"></script>
</body>
</html>
$(function() {

FriendList = Backbone.Collection.extend({
    initialize: function(){

    }
});

FriendView = Backbone.View.extend({

    tagName: 'li',

    events: {
        'click #add-input':  'getFriend',
    },

    initialize: function() {
        var thisView = this;
        this.friendslist = new FriendList;
        _.bindAll(this, 'render');
        this.friendslist.bind("add", function( model ){
            alert("hey");
            thisView.render( model );
        })
    },

    getFriend: function() {
        var friend_name = $('#input').val();
        this.friendslist.add( {name: friend_name} );
    },

    render: function( model ) {
        $("#friends-list").append("<li>"+ model.get("name")+"</li>");
        console.log('rendered')
    },

});

var view = new FriendView({el: 'body'});
});

I noticed that you wanted as little code as possible so I left some things out that you don't need such as declaring an actual model. It might be easier if you use a collection like in the example instead.

Also I have just launched a new site containing Backbone tutorials which might help solve your problem.

BackboneTutorials.com