Edit in JSFiddle

//create a Backbone Router
var myRouter = new Backbone.Router();

//create initial route
myRouter.route('','initialroute',function(){
    console.log('The intital route has been invoked');
});

//tell Backbone to start listening for changes in the URL and run initial route
Backbone.history.start();

//show what url looks like:
$('#url span').text(window.location.href);