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ReactとFluxのこと
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geta6
April 26, 2015
Programming
65k
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ReactとFluxのこと
http://inside.pixiv.net/entry/2015/04/27/170944
geta6
April 26, 2015
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Transcript
React Flux
HFUB SFBDUͱqVYʹ͍ͭͯษڧͯ͠Δ
HFUB ࡶʹ·ͱΊͯΈΔ
None
3FBDU w GBDFCPPL͕࡞ͬͨ+BWB4DSJQUͷϏϡʔ༻ϥΠϒϥϦ w ϑϨʔϜϫʔΫͰͳ͍ʢॏཁʣ w ΞʔΩςΫνϟΛ੍͢ΔͷͰͳ͍ɺϏϡʔ༻ͷ ίϯϙʔωϯτͱͯ͠୯ಠͰར༻͢Δ͜ͱ͕Ͱ͖Δ w .PEFMͱ$PMMFDUJPO#BDLCPOFɺ7JFX͚ͩ3FBDUɺ
ͱ͍͏ετʔϦʔ͋ΓಘΔ w αʔόͰΫϥΠΞϯτͰར༻Մೳ
#FGPSF3FBDU
TUPSZ { items: ['foo'] } <ul id='items'> <li>foo</li> </ul> {
items: ['foo', 'bar'] } <ul id='items'> <li>foo</li> <li>bar</li> </ul> w Ϟσϧͷߏʹैͬͯ%0.Λग़ྗ͢ΔγʔϯΛߟ͑Δ
K2VFSZ $('#item').append('<li>' + _.last(items) + '</li>'); { items: ['foo'] }
<ul id='items'> <li>foo</li> </ul> { items: ['foo', 'bar'] } <ul id='items'> <li>foo</li> <li>bar</li> </ul>
{ items: ['foo'] } <ul id='items'> <li>foo</li> </ul> { items:
['foo', 'bar'] } <ul id='items'> <li>foo</li> <li>bar</li> </ul> K2VFSZ $('#item').append('<li>' + _.last(items) + '</li>'); HTML͕ೖͬͯདྷΔՄೳੑ͕͋ΔͷͰ XSSϦεΫ͕..
K2VFSZ $('#item').append('<li>' + _.escape(_.last(items)) + '</li>'); { items: ['foo'] }
<ul id='items'> <li>foo</li> </ul> { items: ['foo', '<i>bar</i>'] } <ul id='items'> <li>foo</li> <li><i>bar</i></li> </ul>
{ items: ['foo'] } <ul id='items'> <li>foo</li> </ul> { items:
['foo', '<i>bar</i>'] } <ul id='items'> <li>foo</li> <li><i>bar</i></li> </ul> K2VFSZ $('#item').append('<li>' + _.escape(_.last(items)) + '</li>'); ςϯϓϨʔτ͍ͨ͠ͷͰ ݅Ͱม͑ͯΒ͍͍ͬͯͰ͔͢.. APIมΘΓ·͢..
K2VFSZ var val = _.last(items); if (val.t !== 'tmpl') val.b
= _.escape(val.b); $('#item').append('<li>' + val.b + '</li>'); { items: [{t: 'text', b:'foo'}] } <ul id='items'> <li>foo</li> </ul> { items: [ {t: 'text', b: 'foo'}, {t: 'tmpl', b: '<i>bar</i>'} ] } <ul id='items'> <li>foo</li> <li><i>bar</i></li> </ul>
K2VFSZ var val = _.last(items); if (val.t !== 'tmpl') val.b
= _.escape(val.b); $('#item').append('<li>' + val.b + '</li>'); { items: [{t: 'text', b:'foo'}] } <ul id='items'> <li>foo</li> </ul> { items: [ {t: 'text', b: 'foo'}, {t: 'tmpl', b: '<i>bar</i>'} ] } <ul id='items'> <li>foo</li> <li><i>bar</i></li> </ul> ಛఆ݅ͷ࣌inputͰฤूͰ͖ΔΑ͏ʹ ͯ͠Β͍͍ͨΜͰ͕͍͍͢Ͱ͔͢..
K2VFSZ var val = _.last(items); if (val.t !== 'tmpl') {
val.b = _.escape(val.b); } else if (val.t === 'edit') { val.b = '<input value=' + val.b + '>'; } $('#item').append('<li>' + val.b + '</li>'); { items: [{t: 'text', b:'foo'}] } <ul id='items'> <li>foo</li> </ul> { items: [ {t: 'text', b: 'foo'}, {t: 'edit', b: '<i>bar</i>'} ] } <ul id='items'> <li>foo</li> <li><input value='<i>bar</i>'></li> </ul>
K2VFSZ var val = _.last(items); if (val.t !== 'tmpl') {
val.b = _.escape(val.b); } else if (val.t === 'edit') { val.b = '<input value=' + val.b + '>'; } $('#item').append('<li>' + val.b + '</li>'); { items: [{t: 'text', b:'foo'}] } <ul id='items'> <li>foo</li> </ul> { items: [ {t: 'text', b: 'foo'}, {t: 'edit', b: '<i>bar</i>'} ] } <ul id='items'> <li>foo</li> <li><input value='<i>bar</i>'></li> </ul> ࠷ऴߦ͡Όͳ్ͯ͘தʹ৽σʔλ͕ ૠೖ͞ΕΔͱόάΓ·͢..
K2VFSZ var val = _.last(items); if (val.t !== 'tmpl') {
val.b = _.escape(val.b); } else if (val.t === 'edit') { val.b = '<input value=' + val.b + '>'; } $('#item').append('<li>' + val.b + '</li>'); { items: [{t: 'text', b:'foo'}] } <ul id='items'> <li>foo</li> </ul> { items: [ {t: 'text', b: 'foo'}, {t: 'edit', b: '<i>bar</i>'} ] } <ul id='items'> <li>foo</li> <li><input value='<i>bar</i>'></li> </ul> ࠷ऴߦ͡Όͳ్ͯ͘தʹ৽σʔλ͕ ૠೖ͞ΕΔͱόάΓ·͢.. ͷ༧ײ #7299716
K2VFSZ var val = _.last(items); if (val.t !== 'tmpl') {
val.b = _.escape(val.b); } else if (val.t === 'edit') { val.b = '<input value=' + val.b + '>'; } $('#item').append('<li>' + val.b + '</li>'); { items: [{t: 'text', b:'foo'}] } <ul id='items'> <li>foo</li> </ul> { items: [ {t: 'text', b: 'foo'}, {t: 'edit', b: '<i>bar</i>'} ] } <ul id='items'> <li>foo</li> <li><input value='<i>bar</i>'></li> </ul> ్தʹૠೖͱ͔ϋʔυίʔσΟϯάʹͳΓͦ͏.. ͜ΕҎ্ཁٻ͕૿͑ΔͱରԠͰ͖ͳͦ͏.. Ҿ͖ܧ͍ͩΒෛ࠴ʹͳΓͦ͏.. ϑϨʔϜϫʔΫೖΕΕ͍͍ͱฉ͍ͨͷͰ ͱΓ͋͑ͣBackboneΛೖΕͯΈΔ
#BDLCPOF class RawView extends Backbone.View { constructor() { this.tagName =
'li'; super(); } initialize(options) { _.bindAll(this, 'render', 'remove'); this.listenTo(this.model, 'change', this.render); this.listenTo(this.model, 'destroy', this.remove); } render() { $(this.el).html(_.template('<span><%- b %></span>', this.model.toJSON())); return this; } } class InputView extends RawView { render() { $(this.el).html(_.template('<input val="<%- b %>">', this.model.toJSON())); return this; } } class EscapeView extends RawView { render() { $(this.el).html(_.template('<span><%- _.escape(b) %></span>">', this.model.toJSON())); return this; } } { items: [{t: 'text', b:'foo'}] } <ul id='items'> <li>foo</li> </ul> { items: [ {t: 'text', b: 'foo'}, {t: 'edit', b: '<i>bar</i>'} ] } <ul id='items'> <li><span>foo</span></li> <li><input value='<i>bar</i>'></li> </ul> class CollectionView extends Backbone.View { constructor() { this.el = '#items'; super(); } initialize(options) { _.bindAll(this, 'resetItems', 'appendItem', 'removeItem'); this.listenTo(this.collection, 'reset', this.resetItems); this.listenTo(this.collection, 'add', this.appendItem); this.listenTo(this.collection, 'remove', this.removeItem); } resetItems(collection) { collection.each((model) => this.appendItem(model)); } appendItem(model) { var view; switch (model.get('t')) { case 'text': view = new EscapeView({model}); break; case 'tmpl': view = new RawView({model}); break; case 'edit': view = new InputView({model}); break; } var view = new ModelView({model}); $(this.el).append(view.render().el); } removeItem(model) { model.destroy(); } } var collection = new Backbone.Collection(items); new CollectionView({collection}); http://goo.gl/aiVQks
#BDLCPOF class RawView extends Backbone.View { constructor() { this.tagName =
'li'; super(); } initialize(options) { _.bindAll(this, 'render', 'remove'); this.listenTo(this.model, 'change', this.render); this.listenTo(this.model, 'destroy', this.remove); } render() { $(this.el).html(_.template('<span><%- b %></span>', this.model.toJSON())); return this; } } class InputView extends RawView { render() { $(this.el).html(_.template('<input val="<%- b %>">', this.model.toJSON())); return this; } } class EscapeView extends RawView { render() { $(this.el).html(_.template('<span><%- _.escape(b) %></span>">', this.model.toJSON())); return this; } } { items: [{t: 'text', b:'foo'}] } <ul id='items'> <li>foo</li> </ul> { items: [ {t: 'text', b: 'foo'}, {t: 'edit', b: '<i>bar</i>'} ] } <ul id='items'> <li>foo</li> <li><input value='<i>bar</i>'></li> </ul> class CollectionView extends Backbone.View { constructor() { this.el = '#items'; super(); } initialize(options) { _.bindAll(this, 'resetItems', 'appendItem', 'removeItem'); this.listenTo(this.collection, 'reset', this.resetItems); this.listenTo(this.collection, 'add', this.appendItem); this.listenTo(this.collection, 'remove', this.removeItem); } resetItems(collection) { collection.each((model) => this.appendItem(model)); } appendItem(model) { var view; switch (model.get('t')) { case 'text': view = new EscapeView({model}); break; case 'tmpl': view = new RawView({model}); break; case 'edit': view = new InputView({model}); break; } var view = new ModelView({model}); $(this.el).append(view.render().el); } removeItem(model) { model.destroy(); } } var collection = new Backbone.Collection(items); new CollectionView({collection}); ͳɹ͕ɹ͍ ͜ͷྫͩͱModel୯ಠ͕ͩ Model͕ෳʹͳΔͱ ͞Βʹάονϟάνϟʹͳ͍ͬͯ͘ http://goo.gl/aiVQks
#BDLCPOF class RawView extends Backbone.View { constructor() { this.tagName =
'li'; super(); } initialize(options) { _.bindAll(this, 'render', 'remove'); this.listenTo(this.model, 'change', this.render); this.listenTo(this.model, 'destroy', this.remove); } render() { $(this.el).html(_.template('<span><%- b %></span>', this.model.toJSON())); return this; } } class InputView extends RawView { render() { $(this.el).html(_.template('<input val="<%- b %>">', this.model.toJSON())); return this; } } class EscapeView extends RawView { render() { $(this.el).html(_.template('<span><%- _.escape(b) %></span>">', this.model.toJSON())); return this; } } { items: [{t: 'text', b:'foo'}] } <ul id='items'> <li>foo</li> </ul> { items: [ {t: 'text', b: 'foo'}, {t: 'edit', b: '<i>bar</i>'} ] } <ul id='items'> <li>foo</li> <li><input value='<i>bar</i>'></li> </ul> class CollectionView extends Backbone.View { constructor() { this.el = '#items'; super(); } initialize(options) { _.bindAll(this, 'resetItems', 'appendItem', 'removeItem'); this.listenTo(this.collection, 'reset', this.resetItems); this.listenTo(this.collection, 'add', this.appendItem); this.listenTo(this.collection, 'remove', this.removeItem); } resetItems(collection) { collection.each((model) => this.appendItem(model)); } appendItem(model) { var view; switch (model.get('t')) { case 'text': view = new EscapeView({model}); break; case 'tmpl': view = new RawView({model}); break; case 'edit': view = new InputView({model}); break; } var view = new ModelView({model}); $(this.el).append(view.render().el); } removeItem(model) { model.destroy(); } } var collection = new Backbone.Collection(items); new CollectionView({collection}); ͳɹ͕ɹ͍ ͜ͷྫͩͱModel୯ಠ͕ͩɺ Model͕ෳʹͳͬͨ࣌ ͞Βʹάονϟάνϟʹͳ͍ͬͯ͘
#BDLCPOF class RawView extends Backbone.View { constructor() { this.tagName =
'li'; super(); } initialize(options) { _.bindAll(this, 'render', 'remove'); this.listenTo(this.model, 'change', this.render); this.listenTo(this.model, 'destroy', this.remove); } render() { $(this.el).html(_.template('<span><%- b %></span>', this.model.toJSON())); return this; } } class InputView extends RawView { render() { $(this.el).html(_.template('<input val="<%- b %>">', this.model.toJSON())); return this; } } class EscapeView extends RawView { render() { $(this.el).html(_.template('<span><%- _.escape(b) %></span>">', this.model.toJSON())); return this; } } { items: [{t: 'text', b:'foo'}] } <ul id='items'> <li>foo</li> </ul> { items: [ {t: 'text', b: 'foo'}, {t: 'edit', b: '<i>bar</i>'} ] } <ul id='items'> <li>foo</li> <li><input value='<i>bar</i>'></li> </ul> class CollectionView extends Backbone.View { constructor() { this.el = '#items'; super(); } initialize(options) { _.bindAll(this, 'resetItems', 'appendItem', 'removeItem'); this.listenTo(this.collection, 'reset', this.resetItems); this.listenTo(this.collection, 'add', this.appendItem); this.listenTo(this.collection, 'remove', this.removeItem); } resetItems(collection) { collection.each((model) => this.appendItem(model)); } appendItem(model) { var view; switch (model.get('t')) { case 'text': view = new EscapeView({model}); break; case 'tmpl': view = new RawView({model}); break; case 'edit': view = new InputView({model}); break; } var view = new ModelView({model}); $(this.el).append(view.render().el); } removeItem(model) { model.destroy(); } } var collection = new Backbone.Collection(items); new CollectionView({collection}); ͳɹ͕ɹ͍ ͜ͷྫͩͱModel୯ಠ͕ͩɺ Model͕ෳʹͳͬͨ࣌ ͞Βʹάονϟάνϟʹͳ͍ͬͯ͘ #7299716
FWJM w ͳʹ͕ѱ͍ͷ͔
FWJM w ϨϯμϦϯάίετΛؾʹͯ͠ભҠΛॻ͔ͳ͍ͱ͍͚ͳ ͍ͷ͕ѱ͍ w BQQFOEͱ͔͊͞
FWJM w ຖճ৽͘͠%0.࡞্ͬͯॻ͖͢Είʔυͱ%0.ͷঢ় ଶʹဃ͕ແ͘ͳΔ w Ͱͦ͏͢ΔͱJOQVUͷೖྗςΩετͳͲɺҰ࣌తͳ ঢ়ଶ͕ഁغ͞Εͯ͠·͏ w ྻ͕ͭͱ͔ͳΒ͍͍͚ͲUVNCMSͷμογϡϘʔυ Έͨ͘ݸͱ͔ʹͳΔͱϨϯμϦϯάίετͰٿ
͕Ϡό͍
FWJM w ϦΞϧλΠϜόΠϯσΟϯάʹ͠ΖԿʹ͠Ζɺશ෦Λ· Δͬͱॻ͖͑ΔҎ֎ͷख๏ΛͱΔͳΒɺσʔλͷભҠ ʹਵ͢ΔॲཧΛॻ͔͟ΔΛಘͳ͍ w ࠷ॳͷϨϯμϦϯά͔Βεςοϓ͕ਐΊਐΉ΄Ͳɺίʔ υͱ%0.ͷဃ͕ਐߦ͍ͯ͘͠
FWJM w ਓԿ͔ͷ٘ਜ਼ͳ͠ʹԿಘΔࣄͳͲͰ͖ͳ͍ w KTѱຐͱͷܖͩͬͨ
FWJM w ਓԿ͔ͷ٘ਜ਼ͳ͠ʹԿಘΔࣄͳͲͰ͖ͳ͍ w KTѱຐͱͷܖͩͬͨ
FWJM w ਓԿ͔ͷ٘ਜ਼ͳ͠ʹԿಘΔࣄͳͲͰ͖ͳ͍ w KTѱຐͱͷܖͩͬͨ
3FBDUͷར w ʮຖճ৽͘͠%0.࡞্ͬͯॻ͖͢Είʔυͱ%0.ͷ ঢ়ଶʹဃ͕ແ͘ͳΔʯ w ࡶʹݴ͏ͱɺ͜ΕˢΛݱ࣮తͳ࣮ʹམͱ͠ࠐΜͩͷ ͕3FBDU w ͜ΕΛ࣮ݱ͢ΔͨΊʹ7JSUVBM%0.ͱ͍͏ΈΛͬ ͯͨ
7JSUVBM%0. w ͜Ε·ͰϑϩϯτͰسආ͞Ε͖߽ͯͨతϓϩάϥϛϯάύϥμΠϜͷ ݱ࣮తͳղͷҰ͕ͭ3FBDU w σʔλߏʹରԠ͢Δͷ%0.Λߏங͢Δϝιου͕͋Γɺͦͷ %0.ͱݱࡏͷ%0.ͷEJGGΛऔͬͯࠩߋ৽͢Δ { items: ['foo',
'bar'] } <ul id='items'> <li>foo</li> <li>bar</li> </ul> { items: ['foo', 'baz'] } <ul id='items'> <li>foo</li> <li>baz</li> </ul> EJGG <ul id='items'> <li>foo</li> <li>baz</li> </ul>
7JSUVBM%0. w EJGGΛऔΔͨΊʹੜ͞ΕΔ%0.ͷ͜ͱΛ7JSUVBM%0.ͱ͍͏ɺࣗͰॻ ͘ͷ͜͏͍͏σʔλͳΒ͜͏ͳΔͱ͍͏ϝιουͷΈ w ભҠʹؔ͢ΔॲཧΛॻ͘ඞཁ͕ແ͍ɺৗʹʮ͜͏ͳͬͯ΄͍͠ʯͱ͍͏ %0.Λు͖ग़͠ଓ͚ɺݱࡏͷ%0.ͦͷ%0.ʹ͔ͬͯࣗಈͰભҠ͢Δ { items: ['foo',
'bar'] } <ul id='items'> <li>foo</li> <li>bar</li> </ul> { items: ['foo', 'baz'] } EJGG <ul id='items'> <li>foo</li> <li>baz</li> </ul> 7JSUVBM%0. <ul id='items'> <li>foo</li> <li>baz</li> </ul>
7JSUVBM%0. w BUUSJCVUF͕มΘΕมΘΔͷBUUSJCVUF͚ͩɺCPEZ͕มΘΕมΘΔ ͷCPEZ͚ͩ w 7JFXͰ࣮͠ͳ͚Ε͍͚ͳ͍ͷʮJUFNTΛΠςϨʔτͯ͠MJTUΛ࡞Δ ςϯϓϨʔτʯ͚ͩʹͳΔ { items: ['foo',
'bar'] } <ul id='items'> <li>foo</li> <li>bar</li> </ul> { items: ['foo', 'baz'] } EJGG <ul id='items'> <li>foo</li> <li>baz</li> </ul> <ul id='items'> <li>foo</li> <li>baz</li> </ul> 7JSUVBM%0.
3FBDUͷར w ίϯϙʔωϯτϕʔεͰ%0.ΛΈཱͯΔ͜ͱ͕Ͱ͖Δ w ࡶʹݴ͏ͱػೳΛแͨ͠ಠࣗλά͕࡞ΕΔ w 8FC$PNQPOFOUT͕ࢦ͍ͯͨ͠ੈքΛ࣮ϨϕϧͰ࣮ ݱͰ͖Δ
3FBDUͷར w KTY͏ͱΑΓ࣮ײͰ͖Δ σΟʔφϯτΧࣾͷ͡Όͳ͍΄͏ w KTYίϯύΠϧͨ͠ΒKTʹͳΔͭͰ͢ɺ$PGGFFΈ͍ͨͳΜ ͩͱࢥ͍ͬͯͩ͘͞ var Hello
= React.createClass({ render() { return React.DOM.div(null, `Hello ${this.props.name}`); } }) var Hello = React.createClass({ render() { return <div>Hello {this.props.name}</div>; } })
3FBDU w ྫ͑ɺྻ͕͞ΕͨΒMJTUΛউखʹ࡞Δλάͱ͔ <Iterate items={['foo', 'bar']} /> <ul> <li>foo</li> <li>bar</li>
</ul>
3FBDU w ྫ͑ɺݕࡧ݁ՌΛΠςϨʔτͨ͠Β֤ཁૉΛϨϯμϦϯ άͯ͠ग़ͯ͘͠ΕΔͱ͔ w ͏·͘Γ͚ΕɺΛదʹࢄ͢Δ͜ͱ͕Ͱ͖Δ <section className='results'> {this.state.results.map(item =>
{ return <Result item={item} />; })} </section>
3FBDU w ྫ͑ɺޙ͔Β͜͜ΛJODSFNFOUͨ͘͠ ͳͬͨͱ͢Δ <section className='results'> {this.state.results.map(item => { return
<Result item={item} />; })} </section> #49974740
3FBDU w ͜͏͢Δ͚ͩͰউखʹࠩߋ৽ͯ͘͠ΕΔΠϝʔδ Ͱ͢ ࣮ࡍʹTFUUFSΛ௨͢ w ߋ৽͞ΕΔͷதͷࣈͷΈɺ%0.มߋ͞Εͳ͍ results[1].fav_count +=
1 --- <section className='results'> {this.state.results.map(item => { return <Result item={item} />; })} </section> #49974740
None
qVY w qVY͕Ͳ͏͍͏ΞʔΩςΫνϟ͔ɺͷલʹ
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WBM^ 0CKFDU \LFZ WBM^ 4UPSFE0CKFDU <> #18558660
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