Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
The Modern JavaScript Application
Search
Andy Appleton
October 16, 2012
Technology
5
620
The Modern JavaScript Application
A talk at FOWA London
Andy Appleton
October 16, 2012
Tweet
Share
More Decks by Andy Appleton
See All by Andy Appleton
Done is better than perfect
appltn
0
570
Rage against the state machine
appltn
1
480
Modular UI with (Angular || Ember)
appltn
0
110
Building web apps with Express
appltn
4
490
Object Creation Pattern Performance
appltn
1
780
Introducing Mint Source
appltn
1
400
Other Decks in Technology
See All in Technology
AWS Organizations 新機能!マルチパーティ承認の紹介
yhana
1
220
5min GuardDuty Extended Threat Detection EKS
takakuni
0
180
Core Audio tapを使ったリアルタイム音声処理のお話
yuta0306
0
150
asken AI勉強会(Android)
tadashi_sato
0
140
MySQL5.6から8.4へ 戦いの記録
kyoshidaxx
1
300
OPENLOGI Company Profile
hr01
0
67k
AI導入の理想と現実~コストと浸透〜
oprstchn
0
150
AI専用のリンターを作る #yumemi_patch
bengo4com
3
1.8k
Snowflake Summit 2025全体振り返り / Snowflake Summit 2025 Overall Review
mtpooh
2
440
ビギナーであり続ける/beginning
ikuodanaka
1
180
AIとともに進化するエンジニアリング / Engineering-Evolving-with-AI_final.pdf
lycorptech_jp
PRO
0
140
フィンテック養成勉強会#54
finengine
0
200
Featured
See All Featured
Code Reviewing Like a Champion
maltzj
524
40k
Sharpening the Axe: The Primacy of Toolmaking
bcantrill
44
2.4k
Practical Tips for Bootstrapping Information Extraction Pipelines
honnibal
PRO
20
1.3k
We Have a Design System, Now What?
morganepeng
53
7.7k
The Web Performance Landscape in 2024 [PerfNow 2024]
tammyeverts
8
680
Building an army of robots
kneath
306
45k
Writing Fast Ruby
sferik
628
62k
Balancing Empowerment & Direction
lara
1
390
Building Better People: How to give real-time feedback that sticks.
wjessup
367
19k
RailsConf 2023
tenderlove
30
1.1k
Chrome DevTools: State of the Union 2024 - Debugging React & Beyond
addyosmani
7
720
Connecting the Dots Between Site Speed, User Experience & Your Business [WebExpo 2025]
tammyeverts
5
230
Transcript
The Modern JavaScript Application Andy Appleton @appltn http://appleton.me
JS is growing up we are doing more and more
with it and we need more robust tools
$(function(){ $('.thing').on('click', function(ev){ ev.preventDefault(); var $link = $(this) $.get($link.attr('href'), function(data)
{ $link.fadeOut(function(){ $('body').append(data); }); }); }); });
We can do better other languages have rich sets of
tools and patterns, we can too!
None
None
None
Models var Person = Backbone.Model.extend({ sayName: function(){ return this.get('name'); }
}); var andy = new Person({ name: 'Andy' }); andy.sayName(); // => 'Andy'
Collections var People = Backbone.Collection.extend({ sayNames: function(){ return this.map(function(model){ return
model.get('name'); }).join(', '); } });
Views var PersonView = Backbone.view.extend({ render: function(){ this.el.innerHTML = this.model.get('name');
} });
Tools
None
None
Modules defined chunks of code which list their own dependencies
Our Model From Earlier define(['path/to/dependency'], function(dependency){ return Backbone.Model.extend({ // Adding
methods and properties }); });
Alternative Syntax define(function(require){ var dependency = require('path/to/dep'); return Backbone.Model.extend({ //
Adding methods and properties }); });
Structure & Conventions Split each module into a separate file
None
The Requests!
The Requests! The Humanity!
r.js The RequireJS build tool
$ node r.js -o config.js Concatenate & minify JS into
a single file Concatenate & minify CSS via @import
None
Templating
None
http://handlebarsjs.com/
var input = '<h1>{{ name }}</h1>'; var templateFn = Handlebars.compile(input);
var output = templateFn({ name: 'Andy' }); // => '<h1>Andy</h1>'
var input = ' <article>\ <header>\ <h1>{{title}}</h1>\ by {{author}} on
{{date}}\ </header>\ {{content}}\ </article>\ ';
index.html <script type="text/template" id="tpl-name"> <article> <header> <h1>{{title}}</h1> ...etc </script> my-view.js
var input = $('#tpl-name').text(); // ...compile etc
https://github.com/SlexAxton/require-handlebars-plugin
my-view.js define(function(require){ var templateFn = require('hbs!path/to/tpl'); // View now has
access to compiled template // function }); post-template.hbs <article> <header> <h1>{{title}}</h1> ...etc
my-view.js define(function(require){ var templateFn = require('hbs!path/to/tpl'); // View now has
access to compiled template // function }); post-template.hbs <article> <header> <h1>{{title}}</h1> ...etc
Handy Patterns
Mediator A central object to publish and subscribe to global
events
var mediator = _.clone(Backbone.Events); mediator.on('eventname', function(args){ console.log(args); }); mediator.trigger('eventname', 'sausages');
// => 'sausages' mediator.off('eventname');
Model Caching sharing model instances across views
define(function(require){ var _cache = {}, Model = Backbone.Model.extend(); Model.create =
function(opts) { if (opts.id && !_cache[opts.id]) { _cache[opts.id] = new Model(opts); } return _cache[opts.id]; }; return Model; });
define(function(require){ var _cache = {}, Model = Backbone.Model.extend(); Model.create =
function(opts) { if (opts.id && !_cache[opts.id]) { _cache[opts.id] = new Model(opts); } return _cache[opts.id]; }; return Model; });
define(function(require){ var _cache = {}, Model = Backbone.Model.extend(); Model.create =
function(opts) { if (opts.id && !_cache[opts.id]) { _cache[opts.id] = new Model(opts); } return _cache[opts.id]; }; return Model; });
Unit Testing
None
http://pivotal.github.com/jasmine/
var Person = Backbone.Model.extend({ sayName: function(){ return this.get('name'); } });
Our Model From Earlier (again)
describe('Person model', function(){ describe('#sayName', function(){ it('returns `name` attribute', function(){ var
person = new Person({ name: 'Andy' }); expect(person.sayName()).toEqual('Andy'); }); }); });
None
Automation
Grunt JS command line build tool http://gruntjs.com/
None
+ http://phantomjs.org/
None
None
None
https://github.com/mrappleton/jasmine-examples
None
Andy Appleton @appltn http://appleton.me