Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Sign up for free
Menu
Search
Features
All features
Private URLs
Password Protection
Custom URLS
Scheduled publishing
Remove Branding
Restrict embedding
Deck Collections
Notes
Features
All features
Private URLs
Password Protection
Custom URLS
Scheduled publishing
Remove Branding
Restrict embedding
Deck Collections
Notes
Explore
Featured decks
Featured speakers
Programming
Technology
Storyboards
Explore
Featured decks
Featured speakers
Programming
Technology
Storyboards
Pricing
Search
Sign in
Sign up for free
コンポーネント指向による、Reactのベストプラクティスとバッドプラクティス
Search
Kohei Asai
May 27, 2015
Technology
460
0
Share
Embed
Copy iframe code
Copy JS code
Copy link
Start on current slide
コンポーネント指向による、Reactのベストプラクティスとバッドプラクティス
2015-05-27にLINE社で行われた、Data Binding JS Nightでの発表内容です。
Kohei Asai
May 27, 2015
More Decks by Kohei Asai
See All by Kohei Asai
The State Transparented Web Application
axross
1
350
UIコンポーネント指向と「協働」
axross
6
2.9k
安全なJavaScriptを書く
axross
22
8.7k
Introduction to Redux
axross
34
22k
作るのにデザイナーもエンジニアもない
axross
14
7.3k
なぜprottか
axross
4
2.7k
Nodeとフロントエンド − 知っておかなければならない、今と未来の話 −
axross
2
1.4k
gulpを使うと彼女ができるよ - かんたんな紹介とハンズオン
axross
2
1.1k
Other Decks in Technology
See All in Technology
2026-09-11 【Snowflake World Tour Tokyo 2026】Snowflakeを起点に、AI Agentが自律稼働し続ける未来へ / Driving AI Agents with Snowflake
civitaspo
0
450
[2026-09-11]SREは誰のもの?運用エンジニアが始める 「SRE領域への越境」とチームの進化の軌跡 〜Road to NEXT CRE
tosite
0
250
LLMに渡さなかった仕事
nanaism
0
170
The Agent Builder Loop from Daily Work to OSS
minorun365
PRO
3
200
Slack上でインフラをトラブルシュートする! Agentic Platform Engineeringの第一歩
teru0x1
4
1.7k
顧客に向き合う開発組織へ。リアーキテクチャとフィーチャーチーム化で挑む組織改革
safie
0
1.9k
バイブコーディング時代のWebアプリ開発入門~Cloud Runで学ぶセキュアなビルドとデプロイ
waiwai2111
1
120
負債のメタファと2026年 / Debt Metaphor in Agentic Engineering Age 202609 Edition
twada
PRO
5
2.5k
Deployment の 先にある AI Agent 基盤 - kagent vNext、Agent Substrate、Hermes から読み解く Agent Runtime の現在地 / k8s-matsuri-2-ai-agent-platform-amsy810
masayaaoyama
3
560
SREは、MCPとAutopilotをこう使え!
kazumax55
2
800
【技術的負債conf】事業成長に伴う技術的負債の説明責任とAIによるモニタリング、認知的負債について
i35_267
2
1.6k
Genieを崇めよ
kameitomohiro
0
130
Featured
See All Featured
Optimizing for Happiness
mojombo
378
71k
Save Time (by Creating Custom Rails Generators)
garrettdimon
PRO
32
4.8k
Efficient Content Optimization with Google Search Console & Apps Script
katarinadahlin
PRO
1
850
AI Search: Where Are We & What Can We Do About It?
aleyda
0
7.9k
Applied NLP in the Age of Generative AI
inesmontani
PRO
4
2.5k
SEO Brein meetup: CTRL+C is not how to scale international SEO
lindahogenes
2
2.9k
Ethics towards AI in product and experience design
skipperchong
2
370
How To Stay Up To Date on Web Technology
chriscoyier
790
250k
JAMstack: Web Apps at Ludicrous Speed - All Things Open 2022
reverentgeek
1
600
Art, The Web, and Tiny UX
lynnandtonic
304
22k
Impact Scores and Hybrid Strategies: The future of link building
tamaranovitovic
0
440
Building Experiences: Design Systems, User Experience, and Full Site Editing
marktimemedia
1
610
Transcript
ίϯϙʔωϯτࢦ ʹΑΔɺReactͷ ϕετϓϥΫςΟεͱ όουϓϥΫςΟε @axross Data Binding JS Night
Hi :) • Kohei Asai • @axross • Software Engineer
• React.js, express.js
ίϯϙʔωϯτࢦ
ίϯϙʔωϯτࢦΛਪ
Reactͷʹ͓͚ΔComponent const SomeComponent = React.createClass({ render() { return ( <div>
<span>{this.state.valueA}</span> <span>{this.props.valueB}</span> </div> ); }, }); ෦ঢ়ଶ ֎͔Βͷ Component = DOMͱJSͷηοτɺUI෦
-> DOM มث • stateΛΘͣɺpropsΛ͏Α͏ʹ͢Εɺ Componentʮ -> DOM มثʯʹͳΔ
Component props DOM ( or Virtual DOM)
JS͕DOMΛࢧ͢Δੈք • XHRͱHistory APIͰSPA͕Մೳʹͳͬͨ • ͯ͢ͷঢ়ଶΛJavaScript͕ཧͰ͖Δ • JavaScript͕DOMΛࢧ͢Δੈք
Data-bindedͳʮDOMʯͱ • σʔλόΠϯυ͞Εͨͯ͢ͷDOMɺ JavaScriptͷʹΑͬͯు͖ग़͞ΕΔ • ͳΒɺDOMίϯύΠϧ݁Ռ • σʔλόΠϯσΟϯάͷخ͜͜͠͞ʹ͋Δ
Reactͷࢥ͔Βٯࢉ͢Δ ϕετϓϥΫςΟεͱ όουϓϥΫςΟε
ίϯϙʔωϯτࢦ 3ͭͷ๏ଇ • ΛDOMʹม͢ΔஔͰ͋Δ͜ͱΛప͢Δ • ࠶ར༻͞ΕΔ͜ͱΛલఏʹ͢Δ • ίϯϙʔωϯτͱͦ͏Ͱͳ͍ͷΛ໌֬ʹ ͚Δ
ΛDOMʹม͢Δஔ Ͱ͋Δ͜ͱΛప͢Δ
ႈੑΛकΔ • ௨ৗʮ -> DOM มثʯͰ͋Δͣ • ड͚ೖΕ͕ͨಉ͡Ͱ͋Εɺు͖ग़͞ΕΔ DOMৗʹಉͣ͡ •
ͭ·Γɺႈੑ͕͋Δͣ
༨ܭͳࣄͤ͞ͳ͍ • ͦΕҎ্ͷࣄΛͤ͞Δͱɺ٘ਜ਼ΛੜΉ • ඞཁҎ্ͳstateͷอ࣋ɾར༻ • ίϯϙʔωϯτͷதͰXHR • = ႈੑΛࣦ͏
• = ૄ݁߹Ͱͳ͘ͳΔ
ඞཁҎ্ʹঢ়ଶΛ࣋ͨͤͳ͍ • ඞཁҎ্ʹঢ়ଶΛ࣋ͨͤΔͱ • ಉ͡Λ֎͔Β༩͑ͨͱͯ͠ɺు͖ग़͞ ΕΔDOM͕ҧ͏ͷʹͳΔՄೳੑ͕͋Δ • = ςετ͕ࠔʹͳΔ
෭࡞༻ͷ͋ΔߦҝΛؚΊͳ͍ • ෭࡞༻ͷ͋Δߦҝίϯϙʔωϯτͷ֎Ͱ͖͢ • XHRɺWeb StorageͷΞΫηεͳͲ • FluxͷStoreΛsubscribe͢ΔͳͲ • =
݁Ռతʹঢ়ଶΛ࣋ͬͯ͠·͏ • = ґଘ͕૿͑ɺςετ͕ࠔʹͳΔ
ίϯϙʔωϯτ͕࠶ར༻ ͞ΕΔ͜ͱΛલఏʹ͢Δ
componentDidMountʹҙ • componentDidMountͰɺwriteͳ࡞༻ͷ͋Δ Flux ActionΛݺΜͰ͍Δ • ίϯϙʔωϯτΛmount͚ͨͩ͠Ͱɺ ଞͷίϯϙʔωϯτʹ࡞༻ͯ͠͠·͏ • =
ίϯϙʔωϯτͷ෭࡞༻
ʮͲ͏͏͔ʯʮ͏࣌ʯʹ • ίϯϙʔωϯτࣗମͷҐஔαΠζΛࢦఆ͢ ΔCSSΑΖ͘͠ͳ͍ • ͦΕʮίϯϙʔωϯτΛͲ͏͏͔ʯͱ ͍͏Ͱ͋ͬͯɺʮίϯϙʔωϯτͷఆٛʯ ͱίϯςΩετ͕ҟͳͬͯ͠·͏ • =
ผͷॴʹͦͷ··ஔ͚ͳ͍
ίϯϙʔωϯτͱ ͦ͏Ͱͳ͍ͷΛ ໌֬ʹ͚Δ
ʮͦ͏Ͱͳ͍ͷʯඞཁ • ႈੑͷ͋ΔίϯϙʔωϯτͷΈͰΫϥΠΞ ϯταΠυͷΞϓϦέʔγϣϯ࡞Εͳ͍ • ୭͔͕ঢ়ଶΛ࣋ͬͨΓɺXHR͢Δඞཁ͕͋Δ • ແཧͷͳ͍Α͏ʹઃܭ͢Δʹɺ ʮͦ͏Ͱͳ͍ͷʯඞཁ
ςετՄೳൣғΛ͛ΔͨΊʹ • ComponentͷͱͳΔఘΊΔ • ঢ়ଶΛ࣋ͪɺFlux StoreΛsubscribe͢Δ • ίϯϙʔωϯτʹpropsΛ͢ • Ϣχοτςετ͕ෆՄೳͳ།Ұͷଘࡏ
• = ΘΓʹଞͷͯ͢ͷςετ͕༰қʹͳΔ
CSSઃܭͷΞϯαʔ
୯ҐΛ߹ΘͤΔ • 1 ίϯϙʔωϯτ = 1 BEM Blockͱ͔ʹ͢Δ • ϑΝΠϧ໊ɺηϨΫλ໊߹ΘͤΔ
• ໊લͷڝ߹͕͕ΕΔ • ଞͷηϨΫλͷґଘӨڹ͕ͳ͘ͳΔ • = ΧδϡΞϧʹআͰ͖Δɾ࠶ར༻Ͱ͖Δ
·ͱΊ
Reactͱίϯϙʔωϯτ • Reactίϯϙʔωϯτࢦ • ίϯϙʔωϯτɺ -> DOM มث ͱͯ͠ ػೳ͢Δ
ίϯϙʔωϯτࢦ 3ͭͷ๏ଇ • -> DOM มث Ͱ͋Δ͜ͱΛప͢Δ • ࠶ར༻͞ΕΔ͜ͱΛલఏʹ͢Δ
• ίϯϙʔωϯτͱͦ͏Ͱͳ͍ͷΛ໌֬ʹ ͚Δ
ϝϦοτ • ςελϒϧ • ႈੑͱૄ݁߹Ͱ͋Δ͜ͱ͕୲อ͞ΕΔ • ΧδϡΞϧͳมߋɾআͱ࠶ར༻͕Մೳ • ߴͳPDCAαΠΫϧʹऑ͘ͳ͍ •
CSSઃܭॿ͚Δ
ΈΜͳReact͓͏ʂ
Thank you for listening :)