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Svelteで作るWebComponents / svelte-web-components
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やし
October 30, 2019
Programming
2
2.1k
Svelteで作るWebComponents / svelte-web-components
Vue.js Night #1
https://giftee.connpass.com/event/150145/
にて発表した資料です。
やし
October 30, 2019
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Transcript
SvelteͰ࡞Δ WebComponents @yashi848484
ࣗݾհ • Twitter: @yashi848484 • Like: WebϑϩϯτΤϯυ • Love: ΑΑ
• Recent troubles: ཱྀߦؼࠃศɺ෩Ͱܽߤ
ຊ͍͑ͨ͜ͱ • SvelteͱͲ͏͍͏frameworkͳͷ͔ • ֤छframeworkʹґଘ͠ͳ͍ܗͰcomponentΛ࡞Δ ͱɺ༷ʑͳϓϩμΫτͰcomponentΛڞ༗Ͱ͖ͯศ རͦ͏
࡞ͬͨͷ • SvelteͰcustom elements(WebComponents)Λ࡞ͬͨ • ࡞ͬͨcustom elementsΛɺVue applicationͱReact applicationͷ྆ํͰͬͯΈͨ
Svelteͱ • https://svelte.dev/ • svélt: ͢ΒΓͱͨ͠ɺ͢ΜͳΓͱͨ͠ • .svelteίʔυΛɺjsʹม͢ΔίϯύΠϥ • (ࠓճɺ.svelte→custom
elementsͱͯ͠ు͖ग़͢ ܗͰ༻)
Svelteͱ • ίʔυྔগͳ͘ॻ͚Δ͜ͱΛతͱ͍ͯ͠Δ • Virtual DOMΛΘͣɺDOMΛॻ͖͑ΔΞϓ ϩʔν • ࣮ߦ࣌ͷύϑΥʔϚϯε͕ྑ͍ɺͱݴΘΕ͍ͯΔ
Svelteͱ • ύϑΥʔϚϯεʹؔͯ͠ɺVueReactͱൺֱ͞ΕΔ ͜ͱ͕ଟ͍ • →jQueryͱൺֱ͢Δ΄͏͕ϕλʔʁ
<template> <h1>Hello {{ name }}</h1> </template> <script> export default {
data() { return { name: "world" }; } }; </script> <script> let name = "world"; </script> <h1>Hello {name}</h1> 7VF 4WFMUF Svelte syntax
<template> <h1>Hello world</h1> </template> <style scoped> h1 { color: red;
} </style> <style> h1 { color: red; } </style> <h1>Hello world </h1> Svelte syntax 7VF 4WFMUF
<template> <div> <div>count: {{ count }}</div> <button @click="handleClick"> button</button> </div>
</template> <script> export default { data() { return { count: 0 }; }, methods: { handleClick() { this.count += 1; } } }; </script> <script> let count = 0; function handleClick() { count += 1; } </script> <div>count: {count}</div> <button on:click={handleClick} >button</button> Svelte syntax 7VF 4WFMUF
Svelte syntax • data binding, style binding • if, eachͳͲͷϒϩοΫ
• slot • ϥΠϑαΠΫϧϝιου • (؆қతͳ)store • transition, animation • (ҰԠ)contextAPI
WebComponents • ࠶ར༻ՄೳͳಠࣗͷΧελϜཁૉΛ࡞͠ɺ͜ΕΛ ΣϒΞϓϦͰར༻͢ΔͨΊͷٕज़ • Custom elements • Shadow DOM
• HTML templates • HTML imports←ഇࢭ
Demo
<script> export let title = "Svelte Card"; export let message
= "This is card component created by svelte"; let selected = false; function handleOnClick() { selected = !selected; } </script> <style> /* লུ */ </style> <svelte:options tag="svelte-card" /> <div class="card" class:selected on:click={handleOnClick}> <div class="card-title">{title}</div> <div class="card-body">{message}</div> <slot name="footer" /> </div> Svelte CustomElement
<template> <div class="container"> <h1>Svelte x {{ name }}</h1> <div class="content-wrapper">
<template v-for="card in cards"> <svelte- card :title="card.title" :message="card.message" :key="car d.id"> <svelte-button slot="footer" @click="handleButtonOnClick" ></svelte-button> </svelte-card> </template> </div> </div> </template> <script> import "../public/svelte-elements"; WebComponents in Vue
return ( <div className="container"> <h1>Svelte x {props.name}</h1> <div className="content-wrapper"> {cards.map((card,
i) => ( <svelte- card title={card.title} message={card.message} key= {i}> <svelte-button slot="footer" onClick={handleButtonOnClick} ></svelte-button> </svelte-card> ))} </div> </div> ); WebComponents in React
ྑͦ͞͏ͳͱ͜Ζ • Svelteɺsyntax͕Vueʹࣅ͍ͯΔ ɹˠVue.jsΛॻ͍͍ͯΔਓͰ͋ΕɺΩϟονΞοϓָͦ͏ • ͔ͭɺΑΓίʔυྔগͳ͘ॻ͘͜ͱ͕Ͱ͖Δ • طʹVueͱReactͷϓϩμΫτ͕͋Γɺޙ͔ΒσβΠϯͷ౷Ұ ԽΛਤΓ͍ͨ߹ͳͲʹWebComponentsศརͦ͏
՝ • SvelteʹΑΔcustom elementsు͖ग़͠ɺSvelteͷ͓·͚ػೳ ɹˠΞϓϦέʔγϣϯ࡞༻్ͰਅՁΛൃشͰ͖Δ⭕ • SvelteTypeScriptະαϙʔτ ɹˠࠓޙαϙʔτ͞ΕΔ༧ఆ • WebComponentsॳΊͯͬͨͷͰɺࠓޙࣝΛਂΊ͍͖͍ͯͨ
Source https://github.com/yashi8484/svelte-custom-elements
Thank you!