Web フロントエンドにおけるコンポーネント化のアプローチ / Component of Web Frontend

*OTJEF'SPOUFOE !DI4IPHP4FOTVJ 8FCؿٗٝزؒٝسחֶֽ׷ ؝ٝه٦طٝز⻉ך،فٗ٦ث

!DI ‣ 4IPHP4FOTVJ ‣ BLBDIPO*OUFSOFU ‣ $ZCFS"HFOU *OD ‣ 8FC*OJUJBUJWF$FOUFS
‣ 4PGUXBSF&OHJOFFS ‣ 8FCDMJFOUTJEFEFWFMPQNFOU ‣ 0QFO4PVSDF4PGUXBSF

?㼰׃⵸ך8FCחֶֽ׷ ؝ٝه٦طٝزחꟼׅ׷鑧겗

أة؎ٕؖ؎س

$44ךأة؎ٕؖ؎س 䔲儗 ‣ فٗآؙؑز6*ךسًُؗٝزה׃ג ‣ )5.- $44ך朐䡾׾鋅ִ׷⻉׃׋׮ך ‣ ؿٗٝزؒٝسؒٝآص،ָ؝ؾل׃ג⢪ְ׋ְ ‣
رؠ؎ش٦הך⼿噟䩛媮ה׃ג ‣ 椚䟝فٗآؙؑز6*ך侭椚װⱄⵃ欽ך׋׭ ‣ 植㹋ًٝذشٝأׁ׸זְկ؝ؾلⵃ欽ׅ׵דֹזְ

! ⡦׾鍑寸ׅ׸לְְךַ 劤颵涸ח鋅ִגזַ׏׋

؝ٝه٦طٝزהכ ְ׏׋ְז׿זךַ ?

اؿزؐؑ،חְֶגכ暴㹀ך堣腉ծ暴ח ⱄⵃ欽׾罋ִג害欽חꟚ涪ׁ׸׋׮ך չ؝ٝه٦طٝزպהכ˘

☁ 圫ղזꟚ涪؝ٝذؗأز $MJFOU4JEF #SPXTFS J04 "OESPJE 4FSWFS4JEF 8JOEPXT -JOVY 
̞

؝ٝه٦طٝزך⣣⦼ ‣ رؠ؎ٝחְֶג ‣ ِ٦ؠ٦؎ٝة٦ؿؑ٦أך♧顐䚍٥害欽䚍 ‣ 堣腉ח♷ִ׷،ؿؓ٦تٝأ ‣ اؿزؐؑ،חְֶג ‣
فؚٗٓيךⱄⵃ欽䚍٥害欽䚍 ‣ ذأةؽٔذ؍

? 8FCؙٓ؎،ٝز؟؎س חֶֽ׷؝ٝه٦طٝز

剑穄䧭卓暟ך⣣⦼׾ 䊩〸׃䖤׷׮ך "

ֿ׸תדך㉏겗挿 ‣ ؝ٝه٦طٝزך盖椚䩛媮ך㉏겗 ‣ ؙٓ؎،ٝز؟؎س㹋鄲ך彘㉏겗 ‣ ؝ٝه٦طٝز׾㹋植ׅ׷♳דך䪮遭涸铬겗

? ؙٓ؎،ٝز؟؎سחֶֽ׷ ؝ٝه٦طٝزך盖椚倯岀

)5.- $44ד⡲䧭ׅ׷ أة؎ٕؖ؎سכוֲזךַ

رؠ؎ٝر٦ة׾⿫罋חׅ׷ رؠ؎ٝر٦ة׾刿倜ׅ׷ %FTJHO %FWFMPQ )5.- $44דⱄ植ׅ׷ أة؎ٕؖ؎س׾刿倜ׅ׷

铩ָًٝذشٝأׅ׷㉏겗 ‣ رؠ؎ش٦ָ)5.- $44׾⥜姻♶腉ז׵䝤䩛 ‣ رؠ؎ش٦͑؝ٝه٦طٝز盖椚罏ז؛٦أָ㣐⼱ ‣ ♧倯鸐遤ד֮׷ֲ׍כ䛊׵ֻٙ٦ؙ׃זְ ‣ ׉׮׉׮؝ٝه٦طٝز鏣鎘כ8FCח⣛㶷׃זְ
‣ J04װ"OESPJEד׮؝ٝه٦طٝزך罋ִ倯כずׄ ‣ 8FCꣲ㹀ךفٗتؙزז׵葺瘻ַ׮׃׸זְ ‣ ؝ٝه٦طٝز♧鋮׾8FCד鋅׸׷ךכ葺ְө

رؠ؎ش٦הر؍كٗحػ٦ך⚕倯חծ؝ ٝه٦طٝزך鏣鎘ה麊欽ח顑⟣׾《׶竲 ֽ׷䠐陎ָ⵸䲿ח䗳銲׌׏׋ "ؙٓ؎،ٝز㹋鄲罏ך顑⹡

رؠ؎ٝؿ؋؎ٕד盖椚ׅ׷ ‣ ؝ٝه٦طٝز⽃⡘דⴓⶴׅ׷ךָꅾ銲 ‣ رؠ؎ش٦ָ竰竲׃גًٝذشٝأדֹ׷ ‣ 盖椚ׅ׷♳דل٦آ歗꬗הְֲ嚊䙀כ♶銲 ‣ הכְִծل٦آؿ؋؎ٕכ䗳銲חז׷˘ ‣
؝ٝه٦طٝزؿ؋؎ٕ׾⿫撑׃ג圓䧭ׅ׷ ‣ 1IPUPTIPQכ㢩鿇ؿ؋؎ٕ׾⿫撑〳腉ծ4LFUDIכ♶〳腉

4LFUDI*NQPSU4ZNCPMT IUUQTHJUIVCDPNLNFSDTLFUDIJNQPSUTZNCPMT

رؠ؎ٝر٦ة׾⿫罋חׅ׷ رؠ؎ٝر٦ة׾刿倜ׅ׷ %FTJHO %FWFMPQ )5.- $44דⱄ植ׅ׷ أة؎ٕؖ؎س׾刿倜ׅ׷

? ؙٓ؎،ٝز؟؎س㹋鄲ך彘

⼿⫴ך׋׭ךرؠ؎ٝ䙼罋ךⱄ圓眠DPVME IUUQXXXZBTVIJTBDPNDPVMEBSUJDMFEEEPPVYKPC hDPVME

hDPVME

Ꟛ涪فٗإأ♳ך䗳搫 ‣ Ⰻ⡤⫷ך邌植ָ铬ׇ׵׸׷رؠ؎ش٦ ‣ 㹏⯓פך䲿周ծٌحؙ،حفך⡲䧭ծFUD ‣ 銲⟝♶⪒װأ؛آُ٦ٕ㖇鶕ח״׶ծ䖓䩛חז׷ ‣ 㹋鄲ך⵸䲿ד֮׶ծ㹋鄲פך⣛㶷ָ䓼ְ ‣
歗꬗؟؎ؤװ堣腉ך罋䣁怩׸כ㹋鄲٥麊欽؝أزח湫穠ׅ׷ ‣ رؠ؎ش٦הؒٝآص،ך娄׫㺔׶ָ実׭׵׸׷

رؠ؎ش٦כ㹋鄲׾椚鍑׃ ؒٝآص،כرؠ؎ٝ׾椚鍑ׇ״

8FCؿٗٝزؒٝسך $44הְֲ⡂גꬊז׷铬겗 ?

فٓحزؿؓ٦ي嫣ך ؝ٝه٦طٝز׾䧭ׅ䪮遭

)5.- $44 %0. 4UPSZCPBSE 7JFX GSBHNFOUYNM 'SBHNFOU 'SBHNFOU
"DUJWJUZ 7JFX 7JFX$POUSPMMFS #SPXTFS J04 "OESPJE 鋅׋湡ך㹋鄲䮶׷莸ְך㹋鄲 )5.- $44 )5.- $44׌ֽأ؝٦فָזְ

$44כأ؝٦فָזֻ 腚ֻ㠨׸װְׅ鎉铂

أ؝٦فָזֻג鳞ְٔأز ‣ 〳䵤䚍ָזְծֿ׸ח㽴ֹ׷ ‣ ז׈ז׵$BTDBEJOH4UZMF4IFFU׌ַ׵ ‣ 㥴⡦ח⮚׸׋؝ٝه٦طٝز鏣鎘ד׮♳剅ֹ׾꣇־זְ ‣ $44鏣鎘כ剑⡚ꣲךأػ؜ذ؍㼎瘻ח麓ֺזְ ‣
劤颵涸ח؝ٝه٦طٝز⻉׾酡⸔ׅ׷׮ךדכזְ ‣ $44ָ灶笼ׅ׷ַやַכرؠ؎ٝח⣛㶷ׅ׷

$44כ鏣鎘׾䊨㣗׃ג׮ رؠ؎ٝ如痥ד灶笼ׅ׷ ˟暟✲ָծ⥜䗁׃״ֲָזְקוֲתֻ遤ַזֻז׷ֿהկ遤ֹ鑥ת׷ֿהկ

הכְִأ؝٦فכ妜׃ְ

$44.PEVMFTה$44JO+4 ‣ $44.PEVMFT ‣ $44ؿ؋؎ٕ׾JNQPSUד⿫撑ׅ׷ ‣ $44JO+4 ‣ +BWB4DSJQUךؔـآؙؑزד$44׾鎸鶢ׅ׷ ‣
$44ך鎉铂涸ז䓲ׁ׾⯘剪ׅ׷،فٗ٦ث

/* style.css */ .className { color: green; } import styles
from "./style.css"; element.innerHTML = `<input class="${styles.className}">`;

import jss from 'jss'; const styles = jss.createStyleSheet({ className: {
color: green } }).attach(); element.innerHTML = `<input class="${styles.className}">`;

4IBEPX%0. ‣ أ؝٦فך㹋植 ‣ 銲稆⽃⡘ךأ؝٦ف׾㹀纏דֹ׷ ‣ ⱄꂁ䋒〳腉ז劤勻ך؝ٝه٦طٝزָ卓׋ׁ׸׷ ‣ $VTUPN&MFNFOUTח״׷銲稆ךⱄ㹀纏 ‣
⟣䠐ך6*װ䮶׷莸ְ׾תה׭׵׸׷ ‣ 8FC$PNQPOFOUT

<template> <style> :host { display: inline-block; } </style> <input type="checkbox">
</template> <script> class SwitchElement extends HTMLElement { constructor() { super(); const o = document.currentScript.ownerDocument; const t = o.querySelector('template'); this.attachShadow({ mode: 'open' }); this.shadowRoot.appendChild(t.content.cloneNode(true)); } } customElements.define('switch-element', SwitchElement); </script>

ֿֿתדך㉏겗挿ך侭椚 ‣ ؝ٝه٦طٝزכاؿزؐؑ،ךㅷ颵חꟼ׻׷ ‣ וךأةحؙחְֶג׮ずֿׄהָ鎉ִ׷ ‣ أة؎ٕؖ؎سד겥㖈⻉׃׋㉏겗 ‣ ؝ٝه٦طٝزך盖椚倯岀ה׃ג黝ⴖז䩛媮דכזַ׏׋ ‣
رؠ؎ش٦הؒٝآص،ך꟦ך䠐陎ך룪뤍 ‣ ؙٓ؎،ٝز؟؎س㹋鄲חꟼ׻׷➂ך⼿⸂ָ♶〳妀 ‣ 8FCؿٗٝزؒٝس㔿剣ך㹋鄲♳ך㉏겗כ鍑寸׃אא֮׷ ‣ ׻ַ׏גכְ׷ֽוծזַזַ㹋騧דֹזְ؎و؝؝

⼿噟㹋騧חぢֽ׋倯ꆙ ‣ 耵腉ず㡦ך娄׫㺔׶BU植㜥 ‣ رؠ؎ش٦כ㹋鄲׾ծؒٝآص،כرؠ؎ٝ׾㷕ע ‣ ♧倯鸐遤זꟚ涪חז׵זְ׋׭ך铡䖤勞俱ך䲿爙 ‣ Ꟛ涪♳ךًٔحزOPUؒٝآص،鿪さ ‣
ㅷ颵♳ךًٔحزOPUؒٝآص،鿪さ ‣ ⯓➂ח㷕ע ‣ فٗإأ׾ؿٖ٦يٙ٦ؙח䔲גכ׭׷

耵腉ך娄׫㺔׶BU植㜥 ‣ 铡䖤勞俱ך❛䳔 ‣ Ꟛ涪♳ךًٔحزⱄⵃ欽䚍ծ⥂㸚䚍ծꟚ涪؝أز ‣ ㅷ颵♳ךًٔحزرؠ؎ٝװ⹛⡲ך♧顐䚍 ‣ ֶ✼ְך⡲噟׾㼭ֻׁⴓ䬐 ‣
✮劍ׁ׸׷䮶׷莸ְ׾ؒٝآص،ָٖؽُ٦ׅ׷הַ ‣ 6*ך邌植鿇ⴓ׾رؠ؎ش٦ָ㹋鄲׃ג׫׷הַ ‣ ꦄ䱸ׅ׷耵腉ָ実׭׷ֿהך椚鍑

زحفتؐٝז鑧 ‣ أذ٦ؙمٕت٦הךさ䠐䕎䧭 ‣ ⠓爡װ穈籼ٖكٕדך《׶穈׫⻉ ‣ 넝䏝ז佟屚⸂ָ㉏׻׸׷ ‣ رؠ؎ٝءأذي׾鐰⣣ׅ׷ⵖ䏝 ‣
穈籼װفٗآؙؑزךـٓٝر؍ؚٝ ⠓爡鿇縭 فٗآؙؑز Ꟛ涪罏 ̕

نزي،حفז鑧 ‣ 植㜥⚺㼪ך虊ך呎崞⹛ ‣ Ꟛ涪فٗإأ⻉ׅ׷ֿהדך㹀滠 ‣ 竰竲ׅ׷呎孡ָ㉏׻׸׷ ‣ 䩛岀٥ؿٖ٦يٙ٦ؙך㼪Ⰵ ‣
Ꟛ涪鄩ꆀָ֮׷ז׵穈籼涸鍑寸״׶植㹋涸 ‣ 䧭⸆✲⢽⻉ ⠓爡鿇縭 فٗآؙؑز Ꟛ涪罏 ̓

"UPNJD%FTJHO

陎罏ח㷕ע

陎罏 َأؼ؟ׁ׿ ח㷕ע ‣ ֿך䖓ך"."ـ٦أפぢֲַ ‣ !ZIBTTZ㹂חًٝءّׅٝ׷ ‣ IUUQBVUPNBHJDGN׾耮ֻ ‣
IUUQZBTVIJTBDPNDPVME׾鋅׷

#DI $ DI %DIOFU 5IBOLZPV✨

Web フロントエンドにおけるコンポーネント化のアプローチ / Component of We...

Web フロントエンドにおけるコンポーネント化のアプローチ / Component of Web Frontend

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