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
Um futuro chamado Web Components
Search
Zeno Rocha
August 22, 2013
Programming
47
26k
Um futuro chamado Web Components
BrazilJS 2013
Zeno Rocha
August 22, 2013
Tweet
Share
More Decks by Zeno Rocha
See All by Zeno Rocha
The Next Generation of Developer-First Products
zenorocha
1
620
7 Habits of Highly Productive Developers
zenorocha
1
400
7 Hábitos de Desenvolvedores Altamente Produtivos
zenorocha
1
520
What's new in the Liferay Community
zenorocha
0
690
Launching Liferay Projects Faster with WeDeploy
zenorocha
1
570
How Liferay fits into the real of latest technologies
zenorocha
0
620
Estoicismo e JavaScript
zenorocha
3
1.1k
Por que ninguém se importa com seu novo projeto open source?
zenorocha
2
990
Como investir em... você!
zenorocha
1
570
Other Decks in Programming
See All in Programming
AIエージェント時代における TypeScriptスキーマ駆動開発の新たな役割
bicstone
4
1.5k
The Past, Present, and Future of Enterprise Java
ivargrimstad
0
130
Railsだからできる 例外業務に禍根を残さない 設定設計パターン
ei_ei_eiichi
0
250
LLMとPlaywright/reg-suitを活用した jQueryリファクタリングの実際
kinocoboy2
4
670
Introducing ReActionView: A new ActionView-Compatible ERB Engine @ Kaigi on Rails 2025, Tokyo, Japan
marcoroth
3
920
overlayPreferenceValue で実現する ピュア SwiftUI な AdMob ネイティブ広告
uhucream
0
110
育てるアーキテクチャ:戦い抜くPythonマイクロサービスの設計と進化戦略
fujidomoe
1
150
Model Pollution
hschwentner
1
180
Advance Your Career with Open Source
ivargrimstad
0
330
iOSエンジニア向けの英語学習アプリを作る!
yukawashouhei
0
170
なぜあの開発者はDevRelに伴走し続けるのか / Why Does That Developer Keep Running Alongside DevRel?
nrslib
3
370
そのpreloadは必要?見過ごされたpreloadが技術的負債として爆発した日
mugitti9
2
3k
Featured
See All Featured
Build your cross-platform service in a week with App Engine
jlugia
232
18k
Chrome DevTools: State of the Union 2024 - Debugging React & Beyond
addyosmani
7
890
Documentation Writing (for coders)
carmenintech
75
5k
Visualizing Your Data: Incorporating Mongo into Loggly Infrastructure
mongodb
48
9.7k
Practical Orchestrator
shlominoach
190
11k
Agile that works and the tools we love
rasmusluckow
331
21k
Building Adaptive Systems
keathley
43
2.8k
Cheating the UX When There Is Nothing More to Optimize - PixelPioneers
stephaniewalter
285
14k
Easily Structure & Communicate Ideas using Wireframe
afnizarnur
194
16k
Being A Developer After 40
akosma
91
590k
実際に使うSQLの書き方 徹底解説 / pgcon21j-tutorial
soudai
PRO
188
55k
Refactoring Trust on Your Teams (GOTO; Chicago 2020)
rmw
35
3.2k
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