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2017年のformの話
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Yosuke Furukawa
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July 05, 2017
Programming
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2k
2017年のformの話
teppeis_sushi でした。てっぺーさん、おめでとう。
Yosuke Furukawa
PRO
July 05, 2017
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Transcript
2017ͷformʹ͍ͭͯ #teppeis_sushi @ ͑͢ͷϛϟϯϚʔϨετϥϯ
formͯ͠·͔͢ʁ <form> <input type="text" name="username" /> <input type="password" name="password" />
<input type="submit" /> </form>
2017ݱࡏɺ form ͷΛ Ͳ͏ͬͯѻ͏͔ܾ·ͬͯ ͳ͍ʢԶௐʣ
ࠓͷ form ͷΛཧ͢Δॴ %0. 3FBDU 3FEVY +BWB4DSJQUͷϝϞϦ
ࠓͷ form ͷΛཧ͢Δॴ %0. 3FBDU 3FEVY +BWB4DSJQUͷϝϞϦ 6ODPOUSPMMFE 'PSN $POUSPMMFE
'PSN
Uncontrolled vs Controlled • DOMͷΛ͏ (Uncontrolled) • DOM͔Βऔ͖ͬͯͨΛJSͷϝϞϦʹೖΕ ͯɺεφοϓγϣοτͱͯ͠͏ (Controlled)
Uncontrolled form // React ͩͱ͜͏ class NameForm extends React.Component {
// … handleSubmit(event) { alert('A name was submitted: ' + this.input.value); event.preventDefault(); } render() { return ( <form onSubmit={this.handleSubmit}> <label> Name: <input type="text" ref={(input) => this.input = input} /> </label> <input type="submit" value="Submit" /> </form> ); } }
Controlled form class NameForm extends React.Component { // … handleChange(event)
{ this.setState({value: event.target.value}); } handleSubmit(event) { alert('A name was submitted: ' + this.state.value); event.preventDefault(); } render() { return ( <form onSubmit={this.handleSubmit}> <label> Name: <input type="text" value={this.state.value} onChange={this.handleCha </label> <input type="submit" value="Submit" /> </form> ); } }
Uncontrolled vs Controlled • Controlled ͳํ ͜͜Ͱ React ͷ state
ͱ ͯ͠ཧ͢Δ • Uncontrolled ͳํDOMʹ͚ͩཧͤ͞Δ
Uncontrolled vs Controlled • Facebook ͕ਪͯ͠Δͷ Controlled Ұ • React
ͷ v-dom ߋ৽ͷλΠϛϯάͱ߹Θͤͯ React ͕࠷దԽͨ͠ํ๏ͰDOMʹөͤ͞Δ͜ͱ ͕Ͱ͖Δ • ͪΐͬͱڽͬͨformΛ࡞ΕେମControlledͰ࣮ ͢Δඞཁ͕ग़ͯ͘Δɻ
Uncontrolled vs Controlled • jQuery UI Έ͍ͨͳϥΠϒϥϦେମ Uncontrolled ͳํ๏ͰͬͯΔ͜ͱ͕ଟ͍ʢؾ ͕͢Δʣ
• طଘͷࢿ࢈͕jQueryʹ͋ͬͯͦΕ͕ Uncontrolled ͳํ๏Ͱ࣮ݱ͞ΕͯΔͳΒ͏ͷ ྑ͍͕ɺجຊ Controlled Ͱྑ͍ؾ͕͢Δɻɹ
Uncontrolled vs Controlled • https://goshakkk.name/controlled-vs-uncontrolled-inputs-react/
ࠓͷ form ͷΛཧ͢Δॴ %0. 3FBDU 3FEVY +BWB4DSJQUͷϝϞϦ 6ODPOUSPMMFE 'PSN ͏Εͯྑ͍͔
$POUSPMMFE 'PSN ͓ͬͪ͜͢͢Ί
Ͱ 2017 ݱࡏ state ͕ ෳ͋Δ
ࠓͷ form ͷΛཧ͢Δॴ %0. 3FBDU 3FEVY -PDBMTUPSBHF DPPLJF *OEFYFE%#
Ͳ͜ʹΛอଘ͢Δͷ͕ਖ਼͠ ͍ͷ͔ʁ
None
6TF3FBDUGPSFQIFNFSBMTUBUFUIBUEPFTO`UNBUUFSUPUIF BQQHMPCBMMZ
ࠓͷ form ͷΛཧ͢Δॴ %0. 3FBDU 3FEVY -PDBMTUPSBHF DPPLJF *OEFYFE%# &QIFNFSBM
&UFSOBM 'PSFWFS
ࠓͷ form ͷΛཧ͢Δॴ %0. 3FBDU 3FEVY -PDBMTUPSBHF DPPLJF *OEFYFE%# Ұ࣌తͳGPSNͷ
ͳΒ͜͜ʹ HMPCBMͳTUBUFͳΒ ͜͜ʹ
ͰͬͯΈΔͱ
React ͷ state ͱ Redux ͷ state Ͱ form ͔ͩΒͱ͍ͬͯ
͚Δͷ໘
ࠓ
ࠓͷ form ͷΛཧ͢Δॴ %0. 3FBDU 3FEVY -PDBMTUPSBHF DPPLJF *OEFYFE%# ͳΜ͔ύϑΥʔϚϯεͷϘ
τϧωοΫ͕͋ͬͨΒ͜͜ جຊ͜͜
twitter Lite ͷߏ
ࠓͷ form ͷΛཧ͢Δॴ %0. 3FBDU 3FEVY -PDBMTUPSBHF DPPLJF *OEFYFE%# UXJUUFSͷGPSNͷใ
Ұ୴͜͜ͰCV⒎FS จࣈهड़ͨ͠Β SFEVDFSʹߦ͘
͋Δఔ form ͷใ React ͰͨΊͯɺจࣈೖΕ ͨΒ Redux ʹ flush ͤ͞Δɻ
·ͱΊ • 2017ݱࡏɺ Controlled form ͕ओྲྀ • ͨͩ͠ɺControll ͢Δ state
Ͳ͜ͰΔ͔ఆ·ͬͯ ͳ͍ • ݟతʹ Redux ʹཧ͢ΔͰྑͦ͞͏ɻ • ύϑΥʔϚϯε্ͷ͕͋ͬͨ࣌ʹReactͰཧ͕ ྑͦ͞͏ɻ
ࢀߟࢿྉ • https://goshakkk.name/controlled-vs- uncontrolled-inputs-react/ • https://goshakkk.name/should-i-put-form- state-into-redux/