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 元年 v3 / Web Components first yea...
Search
Jxck
November 06, 2020
Technology
1
970
Web Components 元年 v3 / Web Components first year v3
2020/11/05 #new_style_study
https://web-study.connpass.com/event/192863/
Jxck
November 06, 2020
Tweet
Share
More Decks by Jxck
See All by Jxck
IE Graduation (IE の功績を讃える)
jxck
22
15k
IE Graduation Certificate
jxck
6
6k
RFC 9111: HTTP Caching
jxck
0
630
tc39_study_2
jxck
1
5.8k
IETF における ABNF とプロトコルパーサの話 / ABNF for Protocol Parser @ IETF
jxck
2
1k
Periodic Background Sync
jxck
0
530
Podcast over PWA
jxck
0
230
Yearly Web 2019
jxck
0
150
webbundle_study
jxck
2
580
Other Decks in Technology
See All in Technology
KubeCon NA 2024 Recap / Running WebAssembly (Wasm) Workloads Side-by-Side with Container Workloads
z63d
1
240
スタートアップで取り組んでいるAzureとMicrosoft 365のセキュリティ対策/How to Improve Azure and Microsoft 365 Security at Startup
yuj1osm
0
210
re:Invent 2024 Innovation Talks(NET201)で語られた大切なこと
shotashiratori
0
300
10個のフィルタをAXI4-Streamでつなげてみた
marsee101
0
160
10分で学ぶKubernetesコンテナセキュリティ/10min-k8s-container-sec
mochizuki875
3
330
NilAway による静的解析で「10 億ドル」を節約する #kyotogo / Kyoto Go 56th
ytaka23
3
370
Storage Browser for Amazon S3
miu_crescent
1
130
OpenShift Virtualizationのネットワーク構成を真剣に考えてみた/OpenShift Virtualization's Network Configuration
tnk4on
0
130
How to be an AWS Community Builder | 君もAWS Community Builderになろう!〜2024 冬 CB募集直前対策編?!〜
coosuke
PRO
2
2.8k
AI時代のデータセンターネットワーク
lycorptech_jp
PRO
1
280
社内イベント管理システムを1週間でAKSからACAに移行した話し
shingo_kawahara
0
180
re:Invent をおうちで楽しんでみた ~CloudWatch のオブザーバビリティ機能がスゴい!/ Enjoyed AWS re:Invent from Home and CloudWatch Observability Feature is Amazing!
yuj1osm
0
120
Featured
See All Featured
Embracing the Ebb and Flow
colly
84
4.5k
Cheating the UX When There Is Nothing More to Optimize - PixelPioneers
stephaniewalter
280
13k
Optimising Largest Contentful Paint
csswizardry
33
3k
Fashionably flexible responsive web design (full day workshop)
malarkey
405
66k
Site-Speed That Sticks
csswizardry
2
190
Building an army of robots
kneath
302
44k
個人開発の失敗を避けるイケてる考え方 / tips for indie hackers
panda_program
95
17k
Why Our Code Smells
bkeepers
PRO
335
57k
Fantastic passwords and where to find them - at NoRuKo
philnash
50
2.9k
Mobile First: as difficult as doing things right
swwweet
222
9k
Gamification - CAS2011
davidbonilla
80
5.1k
Helping Users Find Their Own Way: Creating Modern Search Experiences
danielanewman
29
2.3k
Transcript
WebComponents 元年 v3 #new_style_study
WebComponent 元年 v0 2012~13 • Custom Elements v0 • Shadow
DOM v0 • Template Element • HTML Imports v0 の API を見直し v1 へ Deprecate には Reverse Origin Trials をしながら削除中 仕様段階で否定されそのまま Deprecated
WebComponent 元年 v1 2016~19 • Custom Elements v1 • Shadow
DOM v1 • Template Instantiation • Synthetic Modules 実質ただの HTML Snippet なので Handlebars 系の記法を入れて本当に Template にしよう。 => 議論進まず Import 構文を使って HTML/CSS/JSON など様々 な Module を Import できるようにしよう。 => Security Risk が見つかる
WebComponent 元年 v2 2019-2020 • Custom Elements v1 • Shadow
DOM v1 ◦ Declarative Shadow DOM ◦ Imeperative Slot Element • Template Instantiation • Synthetic Modules
Declarative Shadow DOM HTML DOM <host-element> <template shadowroot="open"> <style></style> <h2>Shadow
Content</h2> <slot></slot> </template> <h2>Light content</h2> </host-element> <host-element> #shadow-root (open) <style></style> <h2>Shadow Content</h2> <slot> ↳ <h2> reveal </slot> <h2>Light content</h2> </host-element>
Template Instantiation <template type="with-for-each" id="list"> <ul> {{foreach items}} {{if exists}}
<li class={{class}}>{{label}}</li> {{/if}} {{/foreach}} </ul> </template>
WebComponent 元年 v3 (期待) 2021~? • Custom Elements v1 ◦
Scoped Custom Element Registration • Shadow DOM v1 ◦ Declarative Shadow DOM ◦ Imeperative Slot Element • Template Instantiation ◦ DOM Parts • Synthetic Modules ◦ Import Assertions 勝手にファミリー認定 • WebPackaging ◦ Subresource Webbundle
Import Assertions & Synthetic Modules import json from "./foo.json" assert
{ type: "json" }; import("foo.json", { assert: { type: "json" } });
DOM Parts // <a href=""></a> nodePart = new ChildNodePart($a) attributePart
= new AttributePart($a, 'href') nodePart.value = "Example" attributePart.value = "https://example.com" nodePart.commit(); attributePart.commit(); // <a href="https://example.com">Example</a>
Subresource WebBundle <link rel="webbundle" href="bundle.wbn" resources=" style.css script.js image.webp template.html
" >
元年は続く