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
How to control loading state in React
Search
Takumi Ohashi
December 06, 2018
Technology
2
210
How to control loading state in React
Meguro.es #18
Takumi Ohashi
December 06, 2018
Tweet
Share
More Decks by Takumi Ohashi
See All by Takumi Ohashi
freee Tech Night #2 会計freee 7年目のフロントエンド開発
tohashi
1
8.4k
Immutable.js with Flowtype
tohashi
0
7.3k
フロントエンドのモダン化とJavaScriptモジュールの 依存解決
tohashi
8
3.1k
Other Decks in Technology
See All in Technology
社内お問い合わせBotの仕組みと学び
nish01
0
410
組織観点からIAM Identity CenterとIAMの設計を考える
nrinetcom
PRO
1
180
AIが書いたコードをAIが検証する!自律的なモバイルアプリ開発の実現
henteko
1
350
BirdCLEF+2025 Noir 5位解法紹介
myso
0
200
後進育成のしくじり〜任せるスキルとリーダーシップの両立〜
matsu0228
7
2.5k
社内報はAIにやらせよう / Let AI handle the company newsletter
saka2jp
3
250
実装で解き明かす並行処理の歴史
zozotech
PRO
1
420
BtoBプロダクト開発の深層
16bitidol
0
350
定期的な価値提供だけじゃない、スクラムが導くチームの共創化 / 20251004 Naoki Takahashi
shift_evolve
PRO
3
320
多様な事業ドメインのクリエイターへ 価値を届けるための営みについて
massyuu
1
330
Azure Well-Architected Framework入門
tomokusaba
1
310
PLaMo2シリーズのvLLM実装 / PFN LLM セミナー
pfn
PRO
2
990
Featured
See All Featured
Building Adaptive Systems
keathley
43
2.8k
Bootstrapping a Software Product
garrettdimon
PRO
307
110k
Optimising Largest Contentful Paint
csswizardry
37
3.4k
Practical Orchestrator
shlominoach
190
11k
10 Git Anti Patterns You Should be Aware of
lemiorhan
PRO
657
61k
Fashionably flexible responsive web design (full day workshop)
malarkey
407
66k
StorybookのUI Testing Handbookを読んだ
zakiyama
31
6.2k
Connecting the Dots Between Site Speed, User Experience & Your Business [WebExpo 2025]
tammyeverts
9
580
The Invisible Side of Design
smashingmag
301
51k
Git: the NoSQL Database
bkeepers
PRO
431
66k
A Modern Web Designer's Workflow
chriscoyier
697
190k
Dealing with People You Can't Stand - Big Design 2015
cassininazir
367
27k
Transcript
3FBDUͰ ϩʔσΟϯάΛ Ͳ͏ѻ͏͔ @_tohashi
ൃද͢Δਓ • Takumi Ohashi • @_tohashi • freee
࿑ಇڥ • ϞϊϦγοΫͳRailsΞϓϦέʔγϣϯ • ςʔϒϧ 600ڧ • js 40ສߦऑ •
React, flux, flowtype
࣏҆ҡ࣋ • ਓίʔυଟ͍ • ESLint, Prettier • ੩తʹղੳͰ͖ͳ͍ͷ • ίϯϙʔωϯτσʔλϑϩʔͷ࣮ํ
• ׂͷཻ, SFC • HOC, render props • ঢ়ଶཧ
ίϯϙʔωϯτͷঢ়ଶཧ • Ͳ͜Ͱཧ͖͔͢ • ϑΥʔϜͷೖྗ • μΠΞϩάͷ։ด • ඇಉظॲཧதͷεϐφʔදࣔ •
ઃܭ࣮ͷํ͔Ε͕ͪ • υΩϡϝϯταϯϓϧʹΑͬͯҧ͏
Redux ͷ FAQ
ίϯϙʔωϯτͷঢ়ଶཧ • ཁదٓஅ • ΞϓϦέʔγϣϯͷنɺཁ݅ɺར༻͢Δϥ ΠϒϥϦʹΑΔ • ҉ʹͳΓ͕ͪ • νʔϜ։ൃͳΒࢦͷ౷Ұඞཁ
ϩʔσΟϯά • APIϦΫΤετதʹεϐφʔΛදࣔͨ͠Γɺଞ ͷૢ࡞ΛϒϩοΫͨ͠Γ • ίϯϙʔωϯτͷঢ়ଶͰ͋Δ͕ඇಉظॲཧ ActionCreator ଆͰߦΘΕΔ
ϩʔσΟϯάͷ ࣮όϦΤʔγϣϯ
ίϯϙʔωϯτͰ݁
ίϯϙʔωϯτͰ݁ • ϚϯτޙʹҰ͚ͩAPIϦΫΤετΛૹ ΓɺͦͷϨεϙϯεͷϖΠϩʔυΛͬͯί ϯςϯπΛඳը • ϛχϚϜͳ React ΞϓϦέʔγϣϯ
ίϯϙʔωϯτͰ݁
ίϯϙʔωϯτͰ݁
ίϯϙʔωϯτͰ݁ ʢෳճͷϦΫΤετʣ • ϢʔβʔͷΞΫγϣϯʹԠͯ͡ෳճϦΫΤ ετΛૹΔ • ϖʔδωʔγϣϯͳͲ
ίϯϙʔωϯτͰ݁ ʢෳճͷϦΫΤετʣ • v
ίϯϙʔωϯτͰ݁ ʢෳճͷϦΫΤετʣ
Store ͷ State ͱͯ͠ཧ
Store ͷ Stateͱͯ͠ཧ • w/Redux • ϩʔσΟϯάͷঢ়ଶ Store ͷ State
ͱͯ͠ѻ ͏ • ίϯϙʔωϯτΛ presentational ʹͰ͖Δ
Store ͷ Stateͱͯ͠ཧ
Store ͷ Stateͱͯ͠ཧ
ϦετϏϡʔ • ϦετʹෳͷΞΠςϜ • ΞΠςϜ୯ҐͰฤूͯ͠ߋ৽ • ΞΠςϜ͝ͱʹϩʔσΟϯάͷঢ়ଶΛ࣋ͭ
ϦετϏϡʔ
ϦετϏϡʔ
ϦετϏϡʔ
ϩʔσΟϯάྃޙͷΞΫγϣϯ • ʮอଘ͠·ͨ͠ʯͳͲͷϝοηʔδ Notification ͷදࣔ • ϩʔσΟϯά͕ྃͨ͠ޙͷҰճ͚ͩൃੜ͞ ͍ͤͨ • ࣌ؒܦաϢʔβʔͷΞΫγϣϯͰফ͑Δ
ϩʔσΟϯάྃޙͷΞΫγϣϯ
ϩʔσΟϯάྃޙͷΞΫγϣϯ
ΑΓେنͳΞϓϦέʔγϣϯ • ReducerͷංେԽ • API͝ͱʹREQUEST, SUCCESS, (FAILED) • LoadingReducerͳͲʹׂ •
LoadingStateͷόέπϦϨʔ • Context API
ίϯϙʔωϯτͷ State ͱͯ͠ཧ
ίϯϙʔωϯτͷ Stateͱͯ͠ ཧ • Store ͷ State άϩʔόϧ • ϩʔσΟϯάίϯϙʔωϯτͷঢ়ଶͱͯ͠
͍݁ͤͨ͞ • ͔ͭ Redux ͷσʔλϑϩʔͱΈ߹ΘͤΔ
ίϯϙʔωϯτͷ State ͱͯ͠ ཧ
ίϯϙʔωϯτͷ State ͱͯ͠ ཧ
ίϯϙʔωϯτͷ State ͱͯ͠ ཧ
Suspense
Suspense • ϞδϡʔϧͷԆϩʔυඇಉظॲཧ͕ྃ ͢Δ·ͰϨϯμϦϯάΛ suspend Ͱ͖Δ • ϞδϡʔϧͷԆϩʔυ v16.6 ͔Β
• ඇಉظॲཧ mid 2019 ·Ͱʹʢ༧ఆʣ
Suspense
Suspense
Suspense • ۜͷؙͰͳ͍ • Ϧιʔεͷߋ৽ͳͲσʔλϑΣονҎ֎ͷॲཧ ैདྷ௨Γ͍ͬͯ͘ඞཁ͕͋Δ • ΩϟογϡཧϛεΔͱ͍ • ࠷ѱϨϯμϦϯάຖʹ
API ϦΫΤετ͕ඈͿ
͓ΘΓʹ • ϩʔσΟϯάҰͭͱ࣮ͬͯํ๏༷ʑ • ࣗ Store ͷ State ->
ਏ͘ͳͬͯίϯϙʔωϯτͷ State ʹ • ίϯϙʔωϯτͷ async Λڐ༰Ͱ͖Δ͔Ͳ͏͔ • ࣮ࡍ͜͜ʹΤϥʔϋϯυϦϯάೖͬͯ͘Δ • ࠷ڧͷϩʔσΟϯάঢ়ଶཧΛߟ͍͖͑ͯ·͠ΐ͏