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
Web Components: Where we are now, and what’s next?
Search
Peter Gasston
June 19, 2015
Technology
1
220
Web Components: Where we are now, and what’s next?
Responsive Day Out, 19/06/15.
Peter Gasston
June 19, 2015
Tweet
Share
More Decks by Peter Gasston
See All by Peter Gasston
People Don’t Change
stopsatgreen
0
150
Your Reality Here
stopsatgreen
0
89
Growing Up, Getting Serious - #SotB6
stopsatgreen
1
340
Growing Up, Getting Serious
stopsatgreen
0
86
Surveying the Landscape — November 2016
stopsatgreen
1
160
Surveying the Landscape - Fronteers
stopsatgreen
2
480
The Web vs. The Browser
stopsatgreen
0
180
Surveying the Landscape Sept. 2016
stopsatgreen
1
370
Surveying the Landscape
stopsatgreen
4
820
Other Decks in Technology
See All in Technology
LTに影響を受けてテンプレリポジトリを作った話
hol1kgmg
0
300
2025-07-31: GitHub Copilot Agent mode at Vibe Coding Cafe (15min)
chomado
2
380
専門分化が進む分業下でもユーザーが本当に欲しかったものを追求するプロダクトマネジメント/Focus on real user needs despite deep specialization and division of labor
moriyuya
1
1k
大規模イベントに向けた ABEMA アーキテクチャの遍歴 ~ Platform Strategy 詳細解説 ~
nagapad
0
190
いかにして命令の入れ替わりについて心配するのをやめ、メモリモデルを愛するようになったか(改)
nullpo_head
2
150
dipにおけるSRE変革の軌跡
dip_tech
PRO
1
230
ロールが細分化された組織でSREと協働するインフラエンジニアは何をするか? / SRE Lounge #18
kossykinto
0
190
LLMをツールからプラットフォームへ〜Ai Workforceの戦略〜 #BetAIDay
layerx
PRO
1
870
LLM 機能を支える Langfuse / ClickHouse のサーバレス化
yuu26
5
380
データモデリング通り #2オンライン勉強会 ~方法論の話をしよう~
datayokocho
0
110
【CEDEC2025】『ウマ娘 プリティーダービー』における映像制作のさらなる高品質化へ!~ 豊富な素材出力と制作フローの改善を実現するツールについて~
cygames
PRO
0
230
LLMでAI-OCR、実際どうなの? / llm_ai_ocr_layerx_bet_ai_day_lt
sbrf248
0
430
Featured
See All Featured
Practical Tips for Bootstrapping Information Extraction Pipelines
honnibal
PRO
21
1.4k
Into the Great Unknown - MozCon
thekraken
40
2k
Cheating the UX When There Is Nothing More to Optimize - PixelPioneers
stephaniewalter
283
13k
Exploring the Power of Turbo Streams & Action Cable | RailsConf2023
kevinliebholz
34
6k
Code Reviewing Like a Champion
maltzj
524
40k
Thoughts on Productivity
jonyablonski
69
4.8k
Being A Developer After 40
akosma
90
590k
Facilitating Awesome Meetings
lara
54
6.5k
Dealing with People You Can't Stand - Big Design 2015
cassininazir
367
26k
Java REST API Framework Comparison - PWX 2021
mraible
32
8.8k
RailsConf & Balkan Ruby 2019: The Past, Present, and Future of Rails at GitHub
eileencodes
139
34k
How to train your dragon (web standard)
notwaldorf
96
6.2k
Transcript
@stopsatgreen Web Components: where we are now, and what next?
Responsive Day Out 19/06/15
@stopsatgreen Peter Gasston @stopsatgreen broken-links.com
@stopsatgreen For the designers.
@stopsatgreen Web Components have been around for a while.
@stopsatgreen In a trough on the hype cycle.
@stopsatgreen Everybody’s in… but that means trouble.
@stopsatgreen Web Components enable us to create widgets. CSS JS
Widget Widget Widget
@stopsatgreen Composable, reusable, encapsulated. CSS JS Widget Widget Widget
@stopsatgreen We run things, things don’t run we, don’t take
nothing from nobody.
@stopsatgreen React, BEM, etc. are ways of doing this using
the technologies of today.
@stopsatgreen The Extensible Web Manifesto. extensiblewebmanifesto.org <picture> <source srcset="foo.png" media="(min-width:
600px)"> <img src="bar.png" alt="Logo"> </picture>
@stopsatgreen Web Components are: Templates, HTML Imports, Custom Elements, Shadow
DOM.
@stopsatgreen Templates. Reusable fragments of inert HTML.
@stopsatgreen <script type="text/x-tmpl-mustache"> … </script> <template>…</template>
@stopsatgreen Templates. OK to use, with fallback for IE/Edge.
@stopsatgreen HTML Imports. Include HTML documents in an HTML document.
@stopsatgreen <link rel="import" href="file.html"> // file.js export foo; // page.js
import foo from "file.js";
@stopsatgreen HTML Imports. Will probably be replaced by ES6 modules.
@stopsatgreen Shadow DOM. Hide complex markup inside an element.
@stopsatgreen root = el.createShadowRoot({ mode: 'open' }); root.innerHTML = '<div>…</div>';
@stopsatgreen Shadow DOM is very hard to polyfill.
@stopsatgreen Shadow DOM. Lots still to be defined.
@stopsatgreen Custom Elements. Meaningful markup with bespoke properties.
@stopsatgreen <fun-times></fun-times> document.registerElement('fun-times');
@stopsatgreen <fun-times> = HTMLElement <funtimes> = HTMLUnknownElement document.registerElement('fun-times'); <fun-times> =
fun-times
@stopsatgreen fTs = document.querySelector('fun-times'); fTs.hooray(); p = Object.create(HTMLElement.prototype); p.hooray =
function() {…}; document.registerElement('fun-times', { prototype: p });
@stopsatgreen // ES6 approach (not final) class fTs extends HTMLElement
{…} document.registerElement('fun-times', fTs); ES6 offers a better way to do this.
@stopsatgreen Custom Elements. Approach is sound, some details to finalise.
@stopsatgreen is A major sticking point.
@stopsatgreen p = Object.create(HTMLButtonElement.prototype); document.registerElement('fun-times', { prototype: p, extends: 'button'
}); <button is="fun-times"></button>
@stopsatgreen is isn’t (probably)
@stopsatgreen In summary: welcome to the trough of disillusionment.
@stopsatgreen A tour of the sausage factory.
@stopsatgreen This is our big opportunity. We need to get
this right.
@stopsatgreen A11y, usability, SEO, etc, become our responsibility.
@stopsatgreen Sturgeon’s Revelation: 90% of everything is crap.
@stopsatgreen The Gold Standard. github.com/webcomponents/gold-standard/wiki
@stopsatgreen Loading, DOM Presence, Content, Interaction, API, Styling, Performance, Localisation,
Factoring, Development.
@stopsatgreen Unix philosophy: every component does one job.
@stopsatgreen Learn a library first, then vanilla.
@stopsatgreen
@stopsatgreen Everybody’s in. but that means trouble. …
@stopsatgreen Cheers.
@stopsatgreen Reading list: • webcomponents.org/articles/why-web-components/ • hacks.mozilla.org/2015/06/the-state-of-web-components/ • aerotwist.com/blog/polymer-for-the-performance-obsessed/ •
tjvantoll.com/speaking/slides/Web-Components-Catch/San-Francisco/ web-components-catch.pdf • w3.org/2015/04/24-webapps-minutes.html • … and many, many more.