AngularJS vs. Ember.js vs. Backbone.js

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@markbates

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hire me* (for rent, not sale)

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KODIO13 www.metacasts.tv

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AngularJS vs. Ember vs. Backbone.js

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Knockout.js

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philosophies

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Backbone.js “minimal set of data-structure and view primitives for building web application with JavaScript”

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Backbone.js do what you want, however you want to do it (we won’t tell anyone)

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Ember “framework for creating ambitious web applications”

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Ember convention over conﬁguration

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AngularJS “Toolset for building the framework most suited to your application development”

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AngularJS plain old JavaScript

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Round 1

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weight

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“production” versions (miniﬁed) w/ required dependencies

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AngularJS Ember Backbone.js base 81kb 235kb 6.4kb templating language built-in 73kb (handlebars) ?? data adapter built-in 210kb (ember-data) 32kb (jQuery) support N/A 32kb (jQuery) 17kb (json2.js) 4.9kb (underscore.js) 81kb 550kb 60.3kb

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Round 2

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“basic” models

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Backbone.js class App.Beer extends Backbone.Model class App.Beers extends Backbone.Collection ! model: Beer

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Ember App.Beer = DS.Model.extend title: DS.attr("string") abv: DS.attr("number") country_id: DS.attr("number") brewery_id: DS.attr("number") brewery: DS.belongsTo("App.Brewery") country: DS.belongsTo("App.Country")

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AngularJS App.Beer = {}

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“remote” models

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Backbone.js class App.Beer extends Backbone.Model urlRoot: "/api/v1/beers" class App.Beers extends Backbone.Collection url: -‐> if @brewery_id? return "/api/v1/breweries/#{@brewery_id}/beers" else return "/api/v1/beers" model: Beer

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Ember DS.RESTAdapter.reopen namespace: 'api/v1' App.Store = DS.Store.extend revision: 11 adapter: DS.RESTAdapter.create()

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AngularJS App.factory "Beer", ($resource) -‐> return $resource "/api/v1/beers/:id", {id: "@id"}, {update: {method: "PUT"}}

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Round 3

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routers

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Backbone.js @Router = Backbone.Router.extend initialize: -‐> @countries = new Countries() routes: "breweries/:brewery_id": "brewery" "breweries/:brewery_id/edit": "breweryEdit" brewery: (brewery_id) -‐> @changeView(new BreweryView(collection: @countries, model: new Brewery(id: brewery_id))) breweryEdit: (brewery_id) -‐> @changeView(new BreweryEditView(collection: @countries, model: new Brewery(id: brewery_id))) changeView: (view) => @currentView?.remove() @currentView = view $("#outlet").html(@currentView.el)

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Ember App.Router.map -‐> @resource "brewery", {path: "brewery/:brewery_id"}

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Ember App.BreweryRoute = Ember.Route.extend model: (params)-‐> App.Brewery.find(params.brewery_id)

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AngularJS App.config ($routeProvider) -‐> $routeProvider .when("/breweries/:id", { templateUrl: "/assets/brewery.html", controller: "BreweryController" }) .when("/breweries/:id/edit", { templateUrl: "/assets/edit_brewery.html", controller: "EditBreweryController" })

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Round 4

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controllers/views

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Backbone.js class @BreweryEditView extends Backbone.View template: "brewery_edit" events: "click #save-‐button": "saveClicked" "keypress #brewery-‐title": "titleEdited" initialize: -‐> super @countriesView = new CountriesView(collection: @collection) @$el.html(@countriesView.el) @model.on "change", @render @model.fetch() render: => @$("#country-‐outlet").html(@renderTemplate()) return @ saveClicked: (e) => e?.preventDefault() attrs = title: @$("#brewery-‐title").val() synonyms: @$("#brewery-‐synonyms").val() address: @$("#brewery-‐address").val() @model.save attrs, success: (model, response, options) => App.navigate("/breweries/#{@model.id}", trigger: true) error: (model, xhr, options) -‐> errors = [] for key, value of xhr.responseJSON.errors errors.push "#{key}: #{value.join(", ")}" alert errors.join("\n") titleEdited: (e) => title = @$("#brewery-‐title").val() @$("h2").text(title) ! # further code omitted

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Ember App.BreweryController = Ember.ObjectController.extend save: -‐> @store.commit() # further code omitted

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AngularJS @EditBreweryController = ($scope, $routeParams, $location, Brewery) -‐> $scope.brewery = Brewery.get(id: $routeParams.id) $scope.save = -‐> success = -‐> $location.path("/breweries/#{$routeParams.id}") $scope.errors = null failure = (object)-‐> $scope.errors = object.data.errors $scope.brewery.$update {}, success, failure

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Round 5

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templates

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Backbone.js

<%= @model.displayName() %>

Title

Synonyms

Address

<%= @model.get("address") %>

Save Cancel

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Backbone.js

<%= @model.displayName() %>

Title

Synonyms

Address

<%= @model.get("address") %>

Save Cancel

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Backbone.js

<%= @model.displayName() %>

Title

Synonyms

Address

<%= @model.get("address") %>

Save Cancel <%= @model.get("address") %>

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Title

{{view Ember.TextField valueBinding="title" class='input-‐xxlarge'}}

Synonyms

{{view Ember.TextField valueBinding="synonyms" class='input-‐xxlarge'}}

Synonyms

{{view Ember.TextArea valueBinding="address" class='input-‐xxlarge'}}

Save {{ else }} {{ partial "brewery/show" }} {{/if}}

Ember

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Title

{{view Ember.TextField valueBinding="title" class='input-‐xxlarge'}}

Synonyms

{{view Ember.TextField valueBinding="synonyms" class='input-‐xxlarge'}}

Synonyms

{{view Ember.TextArea valueBinding="address" class='input-‐xxlarge'}}

Save {{ else }} {{ partial "brewery/show" }} {{/if}}

Ember {{view Ember.TextField valueBinding="title" class='input-‐xxlarge'}}

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Title

{{view Ember.TextField valueBinding="title" class='input-‐xxlarge'}}

Synonyms

{{view Ember.TextField valueBinding="synonyms" class='input-‐xxlarge'}}

Synonyms

{{view Ember.TextArea valueBinding="address" class='input-‐xxlarge'}}

Save {{ else }} {{ partial "brewery/show" }} {{/if}}

Ember Save

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Title

Synonyms

Address

Save AngularJS

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AngularJS

Title

Synonyms

Address

Save

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Title

Synonyms

Address

Save AngularJS Save

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Round 6

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pros/cons

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Backbone.js • Too simple • Not opinionated enough • “Memory” management • Unstructured • Spaghetti code • Lightweight • Not opinionated • Simple • Easy to read source • “widget” development Pros Cons

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Ember • Too complex • Overly opinionated • Heavyweight • ember-data - not production ready • API always in ﬂux • Buggy • Little to no mind-share outside of Rails • Difﬁcult to read source code • Structured • Highly opinionated • “less” code • “large” apps Pros Cons

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AngularJS • Difﬁcult to read source code • jQuery plugins require custom directives • Large apps requiring self-imposed structure • Lightly structured • Lightly opinionated • “less” code • Plain JavaScript • Simple/Powerful • Easy to test • Lightweight • small, medium, or large apps Pros Cons