I always forget to bind the Backbone save success and error functions to this...

Binding.js

Backbone.View.extend({

    events: {
        'click a.enable': 'enableHandler',
        'click a.disable': 'disableHandler'
    },

    initialize: function() {
        this.model = new Model();
        this.model.bind('change', this.render, this);
    }

    // ...

    enableHandler: function(e) {
        e.preventDefault();
        this.model.save({
            enabled: true
        }, {
            wait: true,
            success: _.bind(function() {
                this.$('a.enable').hide();
                this.$('a.disable').show();
            }, this),
            error: _.bind(function() {
                // ...
            }, this)
        });
    }

    // ...

});

NoBinding.js

Backbone.View.extend({

    events: {
        'click a.enable': 'enableHandler',
        'click a.disable': 'disableHandler'
    },

    initialize: function() {
        this.model = new Model();
        this.model.bind('change', this.render, this);
    }

    // ...

    enableHandler: function(e) {
        e.preventDefault();
        this.model.save({
            enabled: true
        }, {
            wait: true,
            success: function() {
                this.$('a.enable').hide();
                this.$('a.disable').show();
            },
            error: function() {
                // ...
            }
        });
    }

    // ...

});