Question

When I click ‘Cancel’ from First page – it’s ok. But ‘Cancel’ doesn’t work when I
move to ‘Second page’. In this case router redirects application to “” route.
I need to prevent this redirection.

“Cancel” – hide links, “Second page” – move to Second page

<script type="text/html" id="template">
    <a href="#" class="cancel">Cancel</a>
    <a href="#second">Second page</a>
</script>

<div id="container"></div>    

<script>
var View = Backbone.View.extend({

    template: $('#template').html(),

    events: {
        "click .cancel": "cancel"
    },

    cancel: function () {
        this.$el.hide();
    },

    render: function () {
        this.$el.html(this.template);
        return this;
    }
});

var AppRouter = Backbone.Router.extend({

    routes: {
        "": "first",
        "second": "second"
    },

Create view and replace container’s html

    links: function () {
        var view = new View;
        $('#container').html(view.render().el);
    },

    second: function () {
        this.links();
        $('#container').prepend("<h1>Second page</h1>");
    },

    first: function () {
        this.links();
        $('#container').prepend("<h1>First page</h1>");
    }

});

$(document).ready(function () {
    app = new AppRouter;
    Backbone.history.start();
});
</script>

Answer 1

I think you should return false from the cancel handler to prevent navigation to #:

cancel: function (e) {
        this.$el.hide();
        return false;
    },

http://api.jquery.com/on/ says:

Returning false from an event handler will automatically call
event.stopPropagation() and event.preventDefault().