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
630
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
580
Rage against the state machine
appltn
1
480
Modular UI with (Angular || Ember)
appltn
0
120
Building web apps with Express
appltn
4
490
Object Creation Pattern Performance
appltn
1
800
Introducing Mint Source
appltn
1
400
Other Decks in Technology
See All in Technology
多野優介
tanoyusuke
1
410
実装で解き明かす並行処理の歴史
zozotech
PRO
1
310
Access-what? why and how, A11Y for All - Nordic.js 2025
gdomiciano
1
110
動画データのポテンシャルを引き出す! Databricks と AI活用への奮闘記(現在進行形)
databricksjapan
0
140
Shirankedo NOCで見えてきたeduroam/OpenRoaming運用ノウハウと課題 - BAKUCHIKU BANBAN #2
marokiki
0
110
GopherCon Tour 概略
logica0419
2
180
「Verify with Wallet API」を アプリに導入するために
hinakko
1
230
10年の共創が示す、これからの開発者と企業の関係 ~ Crossroad
soracom
PRO
1
170
GA technologiesでのAI-Readyの取り組み@DataOps Night
yuto16
0
260
神回のメカニズムと再現方法/Mechanisms and Playbook for Kamikai scrumat2025
moriyuya
4
510
PLaMoの事後学習を支える技術 / PFN LLMセミナー
pfn
PRO
9
3.8k
AWSにおけるTrend Vision Oneの効果について
shimak
0
120
Featured
See All Featured
[RailsConf 2023] Rails as a piece of cake
palkan
57
5.9k
Refactoring Trust on Your Teams (GOTO; Chicago 2020)
rmw
35
3.2k
Designing Experiences People Love
moore
142
24k
Chrome DevTools: State of the Union 2024 - Debugging React & Beyond
addyosmani
7
890
Raft: Consensus for Rubyists
vanstee
139
7.1k
Rails Girls Zürich Keynote
gr2m
95
14k
Done Done
chrislema
185
16k
Why Our Code Smells
bkeepers
PRO
339
57k
Build your cross-platform service in a week with App Engine
jlugia
232
18k
GraphQLの誤解/rethinking-graphql
sonatard
73
11k
Templates, Plugins, & Blocks: Oh My! Creating the theme that thinks of everything
marktimemedia
31
2.5k
Practical Tips for Bootstrapping Information Extraction Pipelines
honnibal
PRO
23
1.5k
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