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 のリアル/ Realistic Web Components
Search
aggre
November 25, 2018
Technology
12
8.1k
Web Components のリアル/ Realistic Web Components
HTML5 Conference 2018 (
https://events.html5j.org/conference/2018/11/
)での資料です
aggre
November 25, 2018
Tweet
Share
More Decks by aggre
See All by aggre
The money for the openable and shareable era
aggre
0
470
エンジニアは会社に何を求めるか? / What does engineers wants the company?
aggre
0
120
The importance ofopen assets
aggre
0
62
Fully AMP pros and cons
aggre
0
180
OSS の持続的開発をトークンエコノミーで支援する / Dev Token @OSS Universe
aggre
1
370
OSS の持続的開発をトークンエコノミーで支援する / Dev Token @CryptoBowl
aggre
1
420
Mastering lit-html directive
aggre
0
430
非中央集権ウェブ / Decentralized Web
aggre
3
580
OSS の持続的開発をトークンエコノミーで支援する / Dev Token
aggre
0
500
Other Decks in Technology
See All in Technology
Streamline Cloud-Native App Development Using CDEs
saeedzf
0
660
OTel meets Wasm: プラグイン機構としてのWebAssemblyから見る次世代のObservability
lycorptech_jp
PRO
0
270
新卒から4年間、20年もののWebサービスと向き合って学んだソフトウェア考古学 - PHPカンファレンス新潟2025 / new graduate 4year software archeology
oguri
2
330
LT:組込み屋さんのオシロが壊れた!
windy_pon
0
260
Oracle Database オプティマイザ・ヒントの活用
oracle4engineer
PRO
1
130
アプリケーションの中身が見える!Mackerel APMの全貌と展望 / Mackerel APMリリースパーティ
mackerelio
0
390
会社紹介資料 / Sansan Company Profile
sansan33
PRO
6
360k
Okayama WordPress Meetup #12 | そのバックアップ、本当に復元できますか? リストアやってみた!
takeshifurusato
0
110
テストを実施する前に考えるべきテストの話 / Thinking About Testing Before You Test
nihonbuson
PRO
12
2k
Machine Intelligence for Vision, Language, and Actions
keio_smilab
PRO
0
430
FastMCPでSQLをチェックしてくれるMCPサーバーを自作してCursorから動かしてみた
nayuts
1
160
君だけのオリジナル async / await を作ろう / TSKaigi 2025
susisu
17
13k
Featured
See All Featured
Unsuck your backbone
ammeep
671
58k
Intergalactic Javascript Robots from Outer Space
tanoku
271
27k
Automating Front-end Workflow
addyosmani
1370
200k
Helping Users Find Their Own Way: Creating Modern Search Experiences
danielanewman
29
2.6k
Code Review Best Practice
trishagee
68
18k
The Invisible Side of Design
smashingmag
299
50k
How to Ace a Technical Interview
jacobian
276
23k
Building an army of robots
kneath
306
45k
Fight the Zombie Pattern Library - RWD Summit 2016
marcelosomers
233
17k
The Success of Rails: Ensuring Growth for the Next 100 Years
eileencodes
45
7.3k
The Art of Delivering Value - GDevCon NA Keynote
reverentgeek
14
1.5k
It's Worth the Effort
3n
184
28k
Transcript
Web Components HTML5 Conference 2018 @2018-11-25
aggre @aggre_ @aggre FRAME00, INC. CTO aggre.io
• Web Components (5min) • Web Components (5min) • Web
Components (10min) • Web Components (20min)
Web Components
Custom Elements Shadow DOM HTML Templates ES Modules
Custom Elements Shadow DOM HTML Templates ES Modules / Production-ready
Custom Elements Shadow DOM HTML Templates ES Modules Edge Developing
‼
IE
IE • Windows 10 Edge • Windows 7 2020 1
• Windows 8.1 ? Edge … App
None
Polyfills IE, Edge
Polyfills IE, Edge Shadow DOM
• / Polyfills OK • Edge , IE 2020 Polyfills
Web Components
• Custom Elements • Shadow DOM • HTML Templates •
HTML Imports
• Custom Elements • Shadow DOM • ES Modules
• Custom Elements • Shadow DOM • HTML Templates •
HTML Imports • Custom Elements • Shadow DOM • ES Modules
None
HTML
HTML
Custom Elements
Custom Elements
None
Custom Elements Shadow DOM ES Modules
Custom Elements Shadow DOM ES Modules Custom Elements Shadow DOM
DOM
Custom Elements
None
None
DOM createElement()
DOM createElement()
None
None
None
destroy
observedAttributes DOM
observedAttributes DOM
iframe adoptNode() ownerDocument
iframe adoptNode() ownerDocument
Shadow DOM
DOM
CSS
Shadow DOM
None
Shadow DOM
<slot>
<slot> Shadow DOM slot slot
None
slot
None
Shadow DOM slot
• Custom Elements • • Shadow DOM DOM • slot
Shadow DOM
Web Components
• • • • SSR • more…
Web Components
None
size=large
Web Components
e.g. <iron-autogrow-textarea>
e.g. <pinch-zoom>
Web Components xxx-dnd … <drag-and-drop>
None
Web Components
e.g. React
e.g. React Shadow DOM React render
• Web Components • React, Angular, Vue… • • •
:
SSR Shadow DOM slot Hydrate SSR
HTML
shadowRoot <slot> render shadowRoot
shadowRoot <slot> render shadowRoot slot
shadowRoot <slot> render shadowRoot Hydrate
shadowRoot <slot> render shadowRoot SSR
• Custom Elements • Shadow DOM, slot • •
Web Components
…
None
Web Components
• • lit-html • Web Components • lit-html Web Components
• lit-element • Angular/Vue
• lit-html • lit-html Web Components • lit-element • Angular/Vue
• lit-html • lit-html Web Components • lit-element • Angular/Vue
Web Components
• lit-html • lit-html Web Components • lit-element • Angular/Vue
FW FW Web Components
• lit-html • lit-html Web Components • lit-element • Angular/Vue
( )
None
• • innerHTML addEventListener DOM API •
lit-html ( lit-html )
None
lit-html
lit-html
lit-html html, render directive 3 API
lit-html Tagged Templates
lit-html HTML
lit-html HTML DOM DOM
lit-html DOM
lit-html textContent <p>
@Event
?attribute
.property DOM
Intellisense for lit-html typescript-lit-html-plugin, vscode-lit-html
lit-html • lit-html • Intellisense • Web Components • …
• lit-html • lit-element
lit-element
None
None
lit-html React.Component
lit-element • TypeScript Native • lit-html • Web Components •
@property({type: X}) • • lit-html .property
lit-html
None
None
lit-html
None
<header>
<nav>
<article>
<footer>
JSX lit-html
RxJS
fit-html Redux + lit-html
Directive API
Directive API 1
Directive API 0 -1
Directive API directive
Directive API
Directive API render
lit-html • TypeScript Native • JSX • Directive API •
• Vue/Angular HTML React
appendix
lit-html, hyperHTML, htm Tagged Templates
lit-html
hyperHTML
hyperHTML bind() DOM
hyperHTML wire()
htm
htm htm ( preact )
htm JSX
htm …
lit-html hyperHTML htm • (HTML Template Instantiation) • PolymerLabs/template-instantiation •
Directive API • ES5 • Node.js • Tagged Templates JSX • preact vhtml developit/ WebReflection/ Polymer/
( TypeScript Native lit-html )
• lit-element Web Components • FP lit-html ( )
• / Polyfills OK • Edge , IE 2020 Polyfills
• Custom Elements • Shadow DOM DOM • slot Shadow DOM • • • lit-element Web Components • FP lit-html
Thank you! @aggre_ @aggre aggre.io