gistfile1.js

var MustacheView = Backbone.View.extend({

    initialize : function (data) {
        if(this.template) this.mustacheTemplate = this.template.html();
        this.data = data!==undefined ? data : [];

    },
    render : function () {
        var view = this;
        var _render = function() {

            if(view.data.toJSON == undefined) {
                view.renderedContent = Mustache.to_html(view.mustacheTemplate, {data:view.data});
            } else {
                view.renderedContent = Mustache.to_html(view.mustacheTemplate, {data:view.data.toJSON()});
            }

            view.$el.html(view.renderedContent);
        }

        if(this.extTemplate && this.mustacheTemplate==undefined){
            $.ajax({
                type:"GET",
                url:view.extTemplate,
                error:function(err){ throw err; },
                success:function(template) {
                    view.mustacheTemplate = template;
                    _render();
                }
            });
        } else {
            _render();
        }
    }

});