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 State of Web Components
Search
Shogo Sensui
September 24, 2017
Technology
9
8.8k
The State of Web Components
2017年9月24日に開催された HTML5 Conference 2017 の「The State of Web Components」のセッション資料です。
Shogo Sensui
September 24, 2017
Tweet
Share
More Decks by Shogo Sensui
See All by Shogo Sensui
EU のデジタル市場法と Apple / DMA and Apple
1000ch
0
55
Web Share API
1000ch
0
74
2023 年の Web 開発のベースライン / Web Development Baseline 2023
1000ch
0
20
開発生産性と組織 / Productivity and Organization
1000ch
0
1k
なぜ私達は働くのか / Why We Work?
1000ch
0
40
新しいメルカリ Web とそのパフォーマンス / The New Mercari Web and its performance
1000ch
0
37
Web Standards Interop 2022
1000ch
0
260
パフォーマンスを高める CSS / Performance Optimized CSS
1000ch
1
730
HTML Optimization for Web Performance
1000ch
0
670
Other Decks in Technology
See All in Technology
成長期に歩みを止めないための創業期の開発文化形成
mayah
6
420
[2024最新版]AWS Control Towerを使ったセキュアなマルチアカウント環境の作り方
hiashisan
0
270
DevIO2024_レガシー運用からの脱却 -クラウド活用の実践事例とベストプラクティス-
jun2882
0
210
エンジニアの生存戦略 〜クラウド潮流の経験から紐解く技術トレンドのメカニズムと乗りこなし方〜
shimy
9
1.9k
データ分析基盤を作ってみよう~設計編~
nrinetcom
PRO
1
110
サービスの持続的な成長と技術負債について
siva_official
PRO
10
4.4k
Git 研修 Basic【MIXI 24新卒技術研修】
mixi_engineers
PRO
0
310
AWSで”最小権限の原則”を実現するための考え方 /20240722-ssmjp-aws-least-privilege
opelab
10
4.3k
累計ダウンロード数1億8000万を超えるアプリケーションプラットフォームのレガシーシステム脱却とモダン化への道
kmitsuhashi
0
120
プレイドにおけるDatadog APMの活用方法
plaidtech
PRO
2
120
目標設定は好きですか? アジャイルとともに目標と向き合い続ける方法 / Do you like target Management?
kakehashi
10
3k
コミュニティサービスに「あなたへ」フィードを リリースするまでの試行錯誤
takapy
1
140
Featured
See All Featured
Helping Users Find Their Own Way: Creating Modern Search Experiences
danielanewman
26
2.1k
Exploring the Power of Turbo Streams & Action Cable | RailsConf2023
kevinliebholz
12
3.8k
Learning to Love Humans: Emotional Interface Design
aarron
269
39k
Code Review Best Practice
trishagee
58
16k
A Philosophy of Restraint
colly
200
16k
How To Stay Up To Date on Web Technology
chriscoyier
784
250k
Responsive Adventures: Dirty Tricks From The Dark Corners of Front-End
smashingmag
248
20k
How to Ace a Technical Interview
jacobian
274
23k
ParisWeb 2013: Learning to Love: Crash Course in Emotional UX Design
dotmariusz
105
6.8k
Adopting Sorbet at Scale
ufuk
71
8.8k
The World Runs on Bad Software
bkeepers
PRO
63
11k
Designing for humans not robots
tammielis
247
25k
Transcript
)5.-$POGFSFODF 4IPHP4FOTVJBLB!DI 5IF4UBUFPG8FC$PNQPOFOUT
!DI
‣ 4IPHP4FOTVJ ‣ ؎ٝة٦طحزדכDIדׅ ‣ $ZCFS"HFOU *OD ‣ 8FC*OJUJBUJWF$FOUFS ‣
4PGUXBSF&OHJOFFS ‣ 8FC䪮遭Ⰻ菙ָ㥨ֹדׅ ‣ 044崞⹛׃גתׅ
馄鸞劤ָ⳿תׅ 涪㡰✮㹀
8IZ8FC$PNQPOFOUT
)5.- $44 8FC涪罏
8FCחֶֽ鿇ㅷךꨇ׃ׁ ‣ )5.-ה$44חأ؝٦فָ㶷㖈׃זְ ‣ 铣鴥$44ך䕦갟眔㔲ָ鎘濼זְ ‣ せ瑞ָ遼瑱׃זְ״ֲծ䌢ח䠐陎ׅ䗳銲ָ֮ ‣ ⡲鿇ㅷⱄⵃ欽׃חְֻ ‣
)5.- $44 +BWB4DSJQUתה➬穈ָזְ ‣ תה鿇ㅷꂁ䋒ׅؒ؝ءأذيָזַ
نةٝ⡲חכ˘ GBODZCVUUPO
<button> fancy button </button> button { background: #0086b3; color: white;
padding: 1em; border-radius: 0.5em; border: none; } )5.-ה$44剅ֽל0,
GBODZCVUUPO
GBODZCVUUPO GBODZCVUUPO
<button class="a"> fancy button </button> <button class="b"> fancy button </button>
button { color: white; padding: 1em; border-radius: 0.5em; border: none; } button.a { background: #0086b3; } button.b { background: #008080; }
GBODZCVUUPO GBODZCVUUPO
GBODZCVUUPO GBODZCVUUPO GBODZCVUUPO
GBODZCVUUPO GBODZCVUUPO GBODZCVUUPO PWBM TRVBSF
fancy button </button> <button class="b"> fancy button </button> <button class="c">
fancy button </button> <button class="oval"> oval </button> <button class="square"> border-radius: 0.5em; border: none; } button.a { background: #0086b3; } button.b { background: #008080; } button.oval { ... }
GBODZCVUUPO GBODZCVUUPO GBODZCVUUPO PWBM TRVBSF
<fancy-button color="a"> fancy button </fancy-button> <fancy-button color="b"> fancy button </fancy-button>
<fancy-button color="c"> fancy button </fancy-button> <oval-button>oval</oval-button> <square-button>square</square-button>
4IBEPX%0. $VTUPN&MFNFOUT 5FNQMBUFT )5.-*NQPSUT ˟׳התד
˟䎃猧植㖈 4IBEPX%0. $VTUPN&MFNFOUT 5FNQMBUFT &4.PEVMFT
4IBEPX%0.
4IBEPX%0.הכ ‣ )5.-ծ$44ծ+BWB4DSJQUך䕦갟眔㔲ꣲ㹀ׅ ‣ مأزהז銲稆חTIBEPX3PPU欰װ׃ծך⚥ד饯ֿֿה4IBEPX %0.ⰻח殅 ‣ 4IBEPX%0.㢩鿇ַך䕦갟ꣲ㹀ׅ ‣ TIBEPX3PPUפך،ؙإأꣲ㹀涸ח׃ծ䮶莸ְ䬐⥂ׅ
‣ TIBEPX3PPUפ،ؙإأדֹPQFOٌ٦سהծ黪倖ׅDMPTFEٌ٦سָ֮
const button = document.querySelector('button'); const shadowRoot = button.attachShadow({ mode: 'open'
// or 'close' }); // readonly property console.log(button.shadowRoot); 4IBEPX%0.ך欰װ׃倯
GBODZCVUUPO ⢽ִלְֲֲֿنةٝ
<button> fancy button </button> ֲֿ剅ֽءٝفٕ˘ <style> button { background: #0086b3;
color: white; padding: 1em; border-radius: 0.5em; border: none; }ɹ </style>
<button> #shadow-root fancy button </button> <style> button { background: #0086b3;
color: white; padding: 1em; border-radius: 0.5em; border: none; } </style> <button> <slot></slot> </button>
<button> #shadow-root fancy button </button> <style> button { background: #0086b3;
color: white; padding: 1em; border-radius: 0.5em; border: none; }ɹ </style> <button> <slot></slot> </button>
<button> #shadow-root fancy button </button> <style> button { background: #0086b3;
color: white; padding: 1em; border-radius: 0.5em; border: none; } </style> <button> <slot></slot> </button> 4DPQFE
$VTUPN&MFNFOUT
$VTUPN&MFNFOUTהכ ‣ 杝荈ך)5.-銲稆㹑鎉ׅ ‣ )5.-ד㹑鎉涸חⵃ欽דֹ ‣ %0."1*鸐ׄגㄏ⟀涸חⵃ欽דֹ ‣ ⟣䠐ך䮶莸ְ㹀纏ׅ ‣
㹀纏ׁٓ؎ؿ؟؎ؙٕؿحؙׅ
class FancyButton extends HTMLElement { constructor() { ... } connectedCallback()
{ ... } disconnectedCallback() { ... } attributeChangedCallback() { ... } adoptedCallback() { ... } } ؕأةي銲稆ٓ؎ؿ؟؎ؙٕ
䖞勻ך8FC鿇ㅷךⱄⵃ欽 ‣ 鿇ㅷ圓䧭ׅ)5.-鎸鶢ׅ ‣ $44ח״أة؎ؚٔٝ黝欽ׅ ‣ $44ؿ؋؎ٕٗ٦سׅծTUZMF銲稆剅ֻծFUD ‣ +BWB4DSJQUח״䮶莸ְ黝欽ׅ ‣
+BWB4DSJQUؿ؋؎ٕٗ٦سׅծTDSJQU銲稆剅ֻծFUD
GBODZCVUUPO نةٝ⢪ְְ˘
.fancy { background: #0086b3; color: white; padding: 1em; border-radius: 0.5em;
border: none; } CVUUPODTT
CVUUPOKT document .querySelector('.fancy') .addEventListener('click', () => { //... });
<button class="fancy"> fancy button </button> JOEFYIUNM
<link rel="stylesheet" href="button.css"> ... <button class="fancy"> fancy button </button> ...
<script src="button.js"></script> 穈さׇג⢪ֲ
None
class FancyButton extends HTMLElement { connectedCallback() { this.innerHTML = `
<style>button { … }</style> <button>fancy button</button> `; } } customElements .define('fancy-button', FancyButton);
<fancy-button> fancy button </fancy-button> GBODZCVUUPO GBODZCVUUPO⢪ִ
<fancy-button> <style> button { background: #0086b3; color: white; padding: 1em;
border-radius: 0.5em; border: none; } </style> <button> fancy button </button> </fancy-button> /PUTDPQFE
4IBEPX%0. $VTUPN&MFNFOUT
class FancyButton extends HTMLElement { connectedCallback() { this.innerHTML = `
<style>button { … }</style> <button>fancy button</button> `; } } customElements .define('fancy-button', FancyButton);
class FancyButton extends HTMLElement { connectedCallback() { this.shadowRoot.innerHTML = `
<style>button { … }</style> <button><slot></slot></button> `; } } customElements .define('fancy-button', FancyButton);
<fancy-button> <style> button { background: #0086b3; color: white; padding: 1em;
border-radius: 0.5em; border: none; } </style> <button> fancy button </button> </fancy-button>
<fancy-button> #shadow-root <style> button { background: #0086b3; color: white; padding:
1em; border-radius: 0.5em; border: none; } </style> <button> <slot></slot> </button> fancy button </fancy-button> 4DPQFE
5FNQMBUFT
5FNQMBUFTהכ ‣ ꬊ崞䚍ז)5.-銲稆㹑鎉ׅ ‣ ذٝفٖ٦زה׃ג)5.-銲稆䪔ִ ‣ 䖞勻ךعحؙ涸ז،فٗ٦ثׇ׆ח幥
<div style="display:none;"> <p>This is an image</p> <img src="foo.jpg" alt=""> </div>
4FOEBSFRVFTU
<script type="text/template"> <p>This is an image</p> <img src="foo.jpg" alt=""> </script>
&WBMXJUIJOOFS)5.-
<template> <p>This is an image</p> <img src="foo.jpg" alt=""> </template> *OFSU✨
4IBEPX%0. $VTUPN&MFNFOUT 5FNQMBUFT
class FancyButton extends HTMLElement { connectedCallback() { this.shadowRoot.innerHTML = `
<style>button { … }</style> <button><slot></slot></button> `; } } customElements .define('fancy-button', FancyButton);
<template> <style>button { … }</style> <button><slot></slot></button> </template> <script> class FancyButton
extends HTMLElement { // ... } customElements .define('fancy-button', FancyButton); </script>
<link rel="import" href="fancy-button.html"> <fancy-button> fancy button </fancy-button>
)5.-*NQPSUT… IUUQTHJUIVCDPNXDXFCDPNQPOFOUTJTTVFTJTTVFDPNNFOU
)5.-.PEVMFT… IUUQTHJTUHJUIVCDPN5BLBZPTIJ,PDIJGEDFEGECCEBGFGF
import fancy from './fancy.html' as HTMLTemplateElement; export class FancyButton extends
HTMLElement { connectedCallback() { this.attachShadow({ mode: 'open' }).appendChild(fancy.content.cloneNode(true)); } }
&4.PEVMFT
&4.PEVMFTהכ ‣ &4.PEVMFTךـٓؐؠ㹋鄲 ‣ TDSJQUUZQFˑNPEVMF˒ד+BWB4DSJQUؿ؋؎ٕٗ٦سׅ ‣ TDSJQUOPNPEVMFדꬊ㼎䘔橆㞮罋䣁ׅ ‣ &4.PEVMFTך/PEFKT㹋鄲 ‣
NKT&4.PEVMFTך+BWB4DSJQUؿ؋؎ٕה׃גٗ٦سׅ
export default class FancyButton { ... } GBODZCVUUPOKT
import React from 'react'; import ReactDOM from 'react-dom'; import PropTypes
from 'prop-types'; import FancyButton from './fancy-button.js'; JOEFYKT
<script type="module"> import FancyButton from './fancy-button.js'; customElements .define('fancy-button', FancyButton); </script>
4IBEPX%0. $VTUPN&MFNFOUT &4.PEVMFT
class FancyButton extends HTMLElement { connectedCallback() { this.attachShadow({ mode: 'open'
}).innerHTML = ` <style>button { … }</style> <button><slot></slot></button> `; } } customElements .define('fancy-button', FancyButton);
export default class FancyButton extends HTMLElement { connectedCallback() { this.attachShadow({
mode: 'open' }).innerHTML = ` <style>button { … }</style> <button><slot></slot></button> `; } }
<fancy-button> fancy button </fancy-button> <script type="module"> import FancyButton from './fancy-button.js';
customElements .define('fancy-button', FancyButton); </script>
8FCחֶֽ鿇ㅷךꨇ׃ׁ ‣ )5.-ה$44חأ؝٦فָ㶷㖈׃זְ ‣ 铣鴥$44ך䕦갟眔㔲ָ鎘濼זְ ‣ せ瑞ָ遼瑱׃זְ״ֲծ䌢ח䠐陎ׅ䗳銲ָ֮ ‣ ⡲鿇ㅷⱄⵃ欽׃חְֻ ‣
)5.- $44 +BWB4DSJQUתה➬穈ָזְ ‣ תה鿇ㅷꂁ䋒ׅؒ؝ءأذيָזַ
4IBEPX%0. $VTUPN&MFNFOUT &4.PEVMFT OQN ZBSO 8FCחֶֽ鿇ㅷךꨇ׃ׁ ‣ )5.-ה$44חأ؝٦فָ㶷㖈׃זְ ‣ 铣鴥$44ך䕦갟眔㔲ָ鎘濼זְ
‣ せ瑞ָ遼瑱׃זְ״ֲծ䌢ח䠐陎ׅ䗳銲ָ֮ ‣ ⡲鿇ㅷⱄⵃ欽׃חְֻ ‣ )5.- $44 +BWB4DSJQUתה➬穈ָזְ ‣ תה鿇ㅷꂁ䋒ׅؒ؝ءأذيָזַ
1PMZNFS4VNNJU JO$PQFOIBHFO
#PXFSJTEFQSFDBUFE
6TFOQN ZBSO
// fancy-button v1.0.0 customElements .define('fancy-button', FancyButton); // fancy-button v1.1.0 customElements
.define('fancy-button', FancyButton); ZBSO⢪ֲץֹ椚歋 ☠ ⣛㶷ٌآُ٦ٕؿٓحزזخٔ٦ד鍑寸דֹ✨
‣ #SPXTFS4VQQPSU ‣ "DDFTTJCJMJUZ ‣ -PBE1FSGPSNBODF ‣ 3FOEFS1FSGPSNBODF
8FC$PNQPOFOUTTBOECPY IUUQTDIHJUIVCJPXFCDPNQPOFOUTTBOECPY
‣ #SPXTFS4VQQPSU ‣ "DDFTTJCJMJUZ ‣ -PBE1FSGPSNBODF ‣ 3FOEFS1FSGPSNBODF
✅ ✅ $VTUPN&MFNFOUTW 4IBEPX%0.W 5FNQMBUFT &4.PEVMFT ✅ ✅ ✅ ✅
✅ ✅ ✅ ✅ ✅ ✅ 䎃猧ـٓؐؠ؟ه٦ز
8FC$PNQPOFOUT JT BWBJMBCMFOPX PO UIFNPCJMFXFC✨
None
:PV5VCFJTCVJMU POUIFUPQPG1PMZNFS
None
6TFXFCDPNQPOFOUTKT ‣ $VTUPN&MFNFOUTWךهٔؿ؍ٕ ‣ 4IBEZ%0.4IBEPX%0.ך%0."1*هٔؿ؍ٕ ‣ 4IBEZ$444IBEPX%0.ךأة؎ٕꟼ鸬هٔؿ؍ٕ ‣ )5.-*NQPSUT
8IZ4IBEZ%0. ‣ %0.خٔ٦ך،ؙإ؟ⵖ䖴ׅךָꨇ׃ְ ‣ ぐ珏%0."1*װ/PEF-JTUךؒىُٖ٦زָꨇ׃ְ ‣ EPDVNFOUCPEZ瘝ך،ؙإ؟♳剅ֹדֹזְ ‣ ؝٦سꆀָ花㣐חז♳ծػؿؓ٦وٝأח䕦갟ׅ
‣ 4IBEZ%0."1*➜׃ג،ؙإأׇׁ ‣ 㸜㹀䚍⥂אאծػؿؓ٦وٝأ⳿ׅ
None
8FC$PNQPOFOUT JTBMTP BWBJMBCMFOPX PO UIFEFTLUPQXFC
‣ #SPXTFS4VQQPSU ‣ "DDFTTJCJMJUZ ‣ -PBE1FSGPSNBODF ‣ 3FOEFS1FSGPSNBODF
"DDFTTJCJMJUZ ‣ 4IBEPX%0.ך)5.-،ؙإءـٕח ‣ 鸐䌢ך%0.ず圫חծإوٝذ؍ؙأ䠐陎ׅ ‣ )5.-ֽד♶⼧ⴓז㜥さכծ8"*"3*"ד؟ه٦زׅ ‣ 孡חזךכأ؝٦فⰻפך،ؙإأ ‣
4IBEPX%0.ָꪪ⳿ׁגְֽ ‣ ،ؙإءؽٔذ؍ָ⡚ְ؝ٝه٦طٝز⢪ֲ㜥さכ˘
<fancy-button> #shadow-root fancy button </fancy-button> <style> button { background: #0086b3;
color: white; padding: 1em; border-radius: 0.5em; border: none; } </style> <button> <slot></slot> </button> &YQPTFE
<fancy-button> #shadow-root fancy button </fancy-button> <style> div { background: #0086b3;
color: white; padding: 1em; border-radius: 0.5em; border: none; } </style> <div role="button" tabindex="0"> <slot></slot> </div> &YQPTFE
‣ #SPXTFS4VQQPSU ‣ "DDFTTJCJMJUZ ‣ -PBE1FSGPSNBODF ‣ 3FOEFS1FSGPSNBODF
-PBE1FSGPSNBODF ‣ TDSJQUח״؝ٝه٦طٝزךٗ٦س ‣ ؙٔؒأز侧כ)551ד֮ל孡ח׃ֺׅזֻג葺ְ ‣ ؝ٝه٦طٝزך+BWB4DSJQUؿ؋؎ٕכNJOJGZׅ ‣ UZQFˑNPEVMF˒㾩䚍ח״EFGFSٗ٦س ‣
ؔفءّٝדBTZOD㾩䚍➰♷דֹ
TDSJQUח״ぐ珏ٗ٦س IUUQTIUNMTQFDXIBUXHPSHNVMUJQBHFTDSJQUJOHIUNMUIFTDSJQUFMFNFOU
ثُ٦صؚٝه؎ٝز ‣ ٔا٦أ㙵鴥ךַٍؗحءُׅךַ ‣ 㙵鴥כ剑傍ֻٖٝتֲָׁؚٔٝծⴱ劍ٗ٦سָ曯暨חז ‣ ״כ$BDIF$POUSPMقحتװ4FSWJDF8PSLFSזודٍؗحءُ׃ְ ‣ ⴱ劍ٗ٦س傍ְ ‣
MJOLSFMˑQSFMPBE˒ד"5'חꟼٔا٦أٗ٦س׃גֶֻ ‣ 如㔐鼂獳ח䗳銲זٔا٦أכMJOLSFMˑQSFGFUDI˒דٗ٦س׃גֶֻ
‣ #SPXTFS4VQQPSU ‣ "DDFTTJCJMJUZ ‣ -PBE1FSGPSNBODF ‣ 3FOEFS1FSGPSNBODF
3FOEFS1FSGPSNBODF ‣ -JHIU%0.ה4IBEPX%0.ך䊴 ‣ 4IBEPX%0.ךךךכـٓؐؠ㹋鄲ך剑黝⻉ח㨻י״ֲ ‣ ע㣐䊴כזְ⦐➂ך✮䟝דׅ ‣ 7JSUVBM%0.ח״䊴ⴓ䲽歗ך⡭㖑 ‣
➙תד鸐3FBDUזוך7JFXٓ؎ـٓٔה穈さׇ ‣ 8FC$PNQPOFOUTⰻד䊴ⴓ䲽歗㹋倵ׅ
import React from 'react'; export default class Button extends React.Component
{ handleClick(e) { if (this.props.onClick) { this.props.onClick(e); } } render() { const handleClick = this.handleClick.bind(this); return ( <fancy-button onClick={handleClick}> {this.props.children} </fancy-button> ); } }
1PMZNFS-BCTMJUIUNM ‣ 5BHHFE5FNQMBUF-JUFSBMדUFNQMBUF⢪ֲ➬穈 ‣ IUNMAAדذٝفٖ٦ز⡲ծSFOEFS ד)5.-欰䧭ׅ ‣ SFOEFS ד床ׅ⹛涸ז鿇ⴓך䊴ⴓ䲽歗ׅ
const helloTemplate = (name) => html`<div>Hello ${name}!</div>`; // renders <div>Hello
Steve!</div> to the document body render(helloTemplate('Steve'), document.body); // updates to <div>Hello Kevin!</div>, but only updates the ${name} part render(helloTemplate('Kevin'), document.body);
import { html, render } from './lit-html.js'; export default class
IconButton extends HTMLElement { connectedCallback() { this.attachShadow({ mode: 'open' }); render(this.template, this.shadowRoot); } get template() { return html` <style>...</style> <button> <i class="${this.getAttribute('icon')}"></i> <slot></slot> </button> `; } };
תה ‣ 8FC$PNQPOFOUTחꟼׅぐ珏➬圫ָ㸜㹀׃גֹ ‣ ـٓؐؠ㹋鄲滠㹋ח鹌ծ暴חٌغ؎ٕ8FCדכه ٔؿ؍ٕז׃ד⢪ִ ‣ ➙⢪גְ䪮遭أةحؙח《鴥דְֽ ‣ ـٓؐؠⰻ鿇Ⳣ椚ך剑黝⻉䖉אאծطحزٙ٦ؙ
ꟼ鸬כ㛇劤ח屟ثُ٦صؚٝד0,
:PVBSFSFBEZUPVTF 8FC$PNQPOFOUT✨
5IBOLZPV !DI "DI