Edit in JSFiddle

//create a Backbone Router
var myRouter = new Backbone.Router({
    routes: {
        'help': function () {
            console.log('The url hash just change to /#help');
        }
    }
});

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

//change url hash to "#help"
window.location.hash = 'help';