Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Sign up for free
Menu
Search
Features
All features
Private URLs
Password Protection
Custom URLS
Scheduled publishing
Remove Branding
Restrict embedding
Deck Collections
Notes
Features
All features
Private URLs
Password Protection
Custom URLS
Scheduled publishing
Remove Branding
Restrict embedding
Deck Collections
Notes
Explore
Featured decks
Featured speakers
Programming
Technology
Storyboards
Explore
Featured decks
Featured speakers
Programming
Technology
Storyboards
Pricing
Search
Sign in
Sign up for free
Um futuro chamado Web Components
Search
Zeno Rocha
August 22, 2013
Programming
26k
47
Share
Embed
Copy iframe code
Copy JS code
Copy link
Start on current slide
Um futuro chamado Web Components
BrazilJS 2013
Zeno Rocha
August 22, 2013
More Decks by Zeno Rocha
See All by Zeno Rocha
The Next Generation of Developer-First Products
zenorocha
1
770
7 Habits of Highly Productive Developers
zenorocha
1
460
7 Hábitos de Desenvolvedores Altamente Produtivos
zenorocha
1
600
What's new in the Liferay Community
zenorocha
0
750
Launching Liferay Projects Faster with WeDeploy
zenorocha
1
630
How Liferay fits into the real of latest technologies
zenorocha
0
690
Estoicismo e JavaScript
zenorocha
3
1.3k
Por que ninguém se importa com seu novo projeto open source?
zenorocha
2
1.2k
Como investir em... você!
zenorocha
1
640
Other Decks in Programming
See All in Programming
自分的「カンファレンスの楽しみ方」
syumai
0
200
まだ間に合う!今年の夏こそSchemeのマクロ展開器を完全理解!
omasanori
0
650
How I Stole PSI from Android Studio - DroidKaigi2026
worker8
0
100
AIとGame Jamで、ゲームを完成させた話
takahirosaeki
0
120
【DroidKaigi 2026】「アクセシビリティを利用するとき、 アクセシビリティもまたこちらを利用している」 〜マルウェアによる攻撃と防衛について〜
halunoyo
0
440
The Good Stuff, Not the Slop: Engineering High-Quality Android Apps with Modern AI Tooling
danybony
1
240
Gmail/Google DriveをトリガーにAIエージェントを動かそう! / Run AI agents with Gmail/Google Drive as triggers!
har1101
3
490
The Past, Present, and Future of Enterprise Java
ivargrimstad
0
200
AWS Step Functions 大規模並列の壁を越える / jaws-sonic-2026-niigata-step-functions
kasacchiful
PRO
1
430
[DroidKaigi 2026] Bring your own phones to Gradle Managed Devices
f2lk
0
110
{ Android | Kotlin } Gradle Plugin in 2026
ryunen344
1
300
ハーネス設計入門 〜プロンプト、コンテキストの次〜
kinopeee
56
37k
Featured
See All Featured
Designing for humans not robots
tammielis
254
26k
Heart Work Chapter 1 - Part 1
lfama
PRO
9
36k
Mobile First: as difficult as doing things right
swwweet
225
10k
Docker and Python
trallard
47
4.2k
Max Prin - Stacking Signals: How International SEO Comes Together (And Falls Apart)
techseoconnect
PRO
0
460
GitHub's CSS Performance
jonrohan
1033
470k
Designing Experiences People Love
moore
143
24k
Practical Orchestrator
shlominoach
191
12k
The State of eCommerce SEO: How to Win in Today's Products SERPs - #SEOweek
aleyda
2
11k
Designing Powerful Visuals for Engaging Learning
tmiket
1
540
Code Reviewing Like a Champion
maltzj
528
40k
Kristin Tynski - Automating Marketing Tasks With AI
techseoconnect
PRO
0
510
Transcript
<web components> um futuro chamado @zenorocha
@liferay @alloyui
None
None
None
jqueryboilerplate.com
browserdiet.com
None
os projetos mais populares voltados para client-side estão fadados a
morrer
vs <canvas>
document.querySelector vs
vs <input type=”date”>
então quer dizer que tudo vai virar “nativo” um dia?
o que as principais empresas da web estão trabalhando hoje?
None
getbootstrap.com
None
facebook.github.io/react
None
topcoat.io
None
alloyui.com
None
purecss.io
None
None
None
como usar um “componente” hoje?
1. Nunca crie! Use um plugin jQuery
2. Copie e cole o código de alguém
3. Torça pra que funcione
Web Components
<braziljs> braziljs.github.io/braziljs-element
<video is=”camera”> customelements.github.io/camera-element
Web Components Custom Elements Import Templates Shadow DOM Decorators*
Custom Elements
<element name="braziljs" constructor="BrazilJS" attributes="onde"> // implementação </element> <element>
<element name="camera" extends="video"> // implementação </element> <element>
zno.io/QxNJ
<brazil-js></brazil-js> usando JS var proto = Object.create(HTMLElement.prototype); proto.createdCallback = function()
{ this.textContent = 'BrazilJS!'; }; document.register('brazil-js', { prototype: proto });
lifecycle •createdCallback •enteredDocumentCallback •leftDocumentCallback •attributeChangedCallback
x-tags.org
polymer-project.org
<polymer-element name="braziljs" attributes="onde"> <script> Polymer('braziljs', { onde: 'Porto Alegre', created:
function() { // faça algo } }); </script> </polymer-element> como usar?
zno.io/QxlZ
Templates
Templates são blocos reutilizáveis de código
server-side mustache handlebars liquid jinja velocity savant
client-side mustache handlebars eco ejs jade hogan
gambiarra #1 <div id="template" style="display: none"> <img src="logo.png" class="logo.png"> </div>
<script id="template" type="text/x-handlebars-template"> <img src="logo.png"> </script> gambiarra #2
<template>
<template id="meuTemplate"> <img src=""> </template> como criar?
// 1. Acessa o conteúdo do template var t =
document.querySelector('#meuTemplate').content; // 2. Manipula elemento interno do template t.querySelector('img').src = 'logo.png'; // 3. Clona e insere no DOM document.body.appendChild(t.cloneNode(true)); como usar?
Shadow DOM
Shadow DOM esconde os detalhes de implementação
mas e o <iframe>?
do que é feito um <video>? ou um password, textarea,
date?
como usar? <h1>Documento</h1> <div id=”cuia”></div> var cuia = document.querySelector('#cuia') .createShadowRoot();
cuia.innerHTML = '<h1>Mate</h1>';
estilo, marcação e script encapsulados <h1>Documento</h1> <div id=”cuia”></div> var cuia
= document.querySelector('#cuia') .createShadowRoot(); cuia.innerHTML = '<h1>Mate</h1>' + '<style>h1 { color: #f00; }</style>';
como ativar?
Import
None
None
None
None
como usar? <link rel="import" href="braziljs.html">
None
jonrimmer.github.io/are-we-componentized-yet
Flags
quero usar hoje, onde eu encontro? NPM? Bower?
@eduardolundgren
@bernarddeluna
customelements.io
<twitter> customelements.github.io/twitter-element
<gmaps> customelements.github.io/gmaps-element
<video is=”camera”> customelements.github.io/camera-element
<video is=”tracking”> eduardolundgren.github.io/tracking-element
ou seja...
encapsulamento e reaproveitamento de código de verdade
A melhor forma de prever o futuro é inventando ele
e..... camisetas!
None