Comment fonctionne la directive "Utiliser le client" dans Next.js 13
<p>J'essaie d'en savoir plus sur le rendu côté serveur à l'aide de Next.js 13.4 et du nouveau répertoire <code>app/</code> D'après ce que j'ai compris, chaque composant est un composant <em>server</em> par défaut (c'est-à-dire rendu côté serveur). </p>
<p>Cependant, nous pouvons utiliser la directive <code>'use client'</code> pour forcer le composant à devenir un composant <em>client</em> </p>
<p> Ci-dessous, j'ai configuré un simple composant "Hello World", d'abord en tant que composant serveur puis en tant que composant client. Dans chaque cas, je compare le code source de la page.</p>
<h3><code>src/app/page.js</code>（服务器组件）</h3>
<pre class="brush:php;toolbar:false;">exporter la fonction par défaut Home() {
retour (
<principal>
<h1>Bonjour tout le monde</h1>
</principal>
)
}</pré>
<p>Chrome> 查看页面源代码</p>
<pre class="brush:php;toolbar:false;"><!DOCTYPE html>
<html lang="fr">
<tête>
<meta charSet="utf-8" />
<title>Créer l'application suivante</title>
<meta name="description" content="Généré par la création de l'application suivante" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<script src="/_next/static/chunks/polyfills.js" noModule=""></script>
≪/tête>
<corps>
<principal>
<h1>Bonjour tout le monde</h1>
</principal>
<script src="/_next/static/chunks/webpack.js" async=""></script>
<script src="/_next/static/chunks/main-app.js" async=""></script>
<script>(self.__next_f = self.__next_f || []).push([0])</script>
<script>self.__next_f.push([1, "0:"$L1"n"])</script>
<script>self.__next_f.push([1, "2:I{"id":"(app-client)/./node_modules/next/dist/client/components/app-router.js","chunks ":["webpack:static/chunks/webpack.js"],"name":"","async":false}n4:I{"id":"(app-client)/./node_modules/next/ dist/client/components/error-boundary.js","chunks":["webpack:static/chunks/webpack.js"],"name":"","async":false}n6:I{"id ":"(app-client)/./node_modules/next/dist/client/components/layout-router.js","chunks":["app-client-internals:static/chunks/app-client-internals. js"],"name":"","async":false}n7:I{"id":"(app-client)/"])</script>
<script>self.__next_f.push([1, "./node_modules/next/dist/client/components/render-from-template-context.js","chunks":["app-client-internals:static /chunks/app-client-internals.js"],"name":"","async":false}n"])</script>
<script>self.__next_f.push([1, "1:[[],["$","$L2",null,{"assetPrefix":"","initialCanonicalUrl":"/","initialTree ":["",{"children":["__PAGE__",{}]},"$undéfini","$undéfini",true],"initialHead":["$L3",null],"globalErrorComponent" :"$4","notFound":["$","html",null,{"lang":"fr","children":["$","body",null,{"children":[ "$L5","$undefined",[["$","title",null,{"children":"404 : Cette page est introuvable."}],["$","div", null,{"style":{"fontFamily":"system-ui,"Segoe UI",Roboto,Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji"","height":" 100vh","textAlign":"center","display":"flex","flexDirection":"column","alignItems":"center","justifyContent":"center"},"children":[" $","div",null,{"children":[["$","style",null,{"dangerouslySetInnerHTML":{"__html":"body{color:#000;background:#fff;margin :0}.next-error-h1{border-right:1px solid rgba(0,0,0,.3)}@media (prefers-color-scheme:dark){body{color:#fff;background:# 000}.next-error-h1{border-right:1px solid rgba(255,255,255,.3)}}"}}],["$","h1",null,{"className":"next-error- h1","style":{"display":"inline-block","margin":"0 20px 0 0","padding":"0 23px 0 0","fontSize":24,"fontWeight": 500,"verticalAlign":"top","lineHeight":"49px"},"children":"404"}],["$","div",null,{"style":{"display": "inline-block"},"children":["$","h2",null,{"style":{"fontSize":14,"fontWeight":400,"lineHeight":"49px","margin ":0},"children": "Cette page est introuvable."}]}]]}]}]]]}]}],"asNotFound":false,"children":[["$","html",null,{"lang":"fr","children":["$","body",null,{" enfants":["$","$L6",null,{"parallelRouterKey":"enfants","segmentPath":["enfants"],"error":"$undéfini","errorStyles":"$undéfini ","loading":"$non défini","loadingStyles":"$undéfini","hasLoading":false,"template":["$","$L7",null,{}],"templateStyles": "$undéfini", "notFound": "$undéfini", "notFoundStyles": "$undéfini", "childProp": {"current":[["$","main",null,{"enfants":[ "$","h1",null,{"children":"Hello World"}]}],null],"segment":"__PAGE__"},"styles":[]}]}]}],null ]}]]n"])</script>
<script>self.__next_f.push([1, "5:[[["$","meta",null,{"charSet":"utf-8"}],null,null,null,null, null,null,null,null,null,null,["$","meta",null,{"name":"viewport","content":"width=device-width, initial-scale=1"} ],null,null,null,null,null,null,null,null,null,null,[]],[null,null,null,null],null,null,[null,null,null,null,null ],null,null,null,null,null]n3:[[["$","meta",null,{"charSet":"utf-8"}],["$","title",null ,{"children":"Créer l'application suivante"}],["$","meta",null,{"name":"description","content":"Généré par la création de l'application suivante"}],null, null,null,null,n"])</script>
<script>self.__next_f.push([1, "ull,null,null,null,["$","meta",null,{"name":"viewport","content":"width=device -width, initial-scale=1"}],null,null,null,null,null,null,null,null,null,null,[]],[null,null,null,null],null,null, [null,null,null,null,null],null,null,null,null,null]n"])</script>
</corps>
</html></pre>
<h3><code>src/app/page.js</code>（客户端组件）</h3>
<pre class="brush:php;toolbar:false;">'utiliser le client';
exporter la fonction par défaut Home() {
retour (
<principal>
<h1>Bonjour tout le monde</h1>
</principal>
)
}</pre>
<p>Chrome > 查看页面源代码</p>
<pre class="brush:php;toolbar:false;"><!DOCTYPE html>
<html lang="en">
<head>
<meta charSet="utf-8" />
<title>Create Next App</title>
<meta name="description" content="Generated by create next app" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<script src="/_next/static/chunks/polyfills.js" noModule=""></script>
</head>
<body>
<main>
<h1>Hello World</h1>
</main>
<script src="/_next/static/chunks/webpack.js" async=""></script>
<script src="/_next/static/chunks/main-app.js" async=""></script>
<script>(self.__next_f = self.__next_f || []).push([0])</script>
<script>self.__next_f.push([1, "0:"$L1"n"])</script>
<script>self.__next_f.push([1, "2:I{"id":"(app-client)/./node_modules/next/dist/client/components/app-router.js","chunks":["webpack:static/chunks/webpack.js"],"name":"","async":false}n4:I{"id":"(app-client)/./node_modules/next/dist/client/components/error-boundary.js","chunks":["webpack:static/chunks/webpack.js"],"name":"","async":false}n6:I{"id":"(app-client)/./node_modules/next/dist/client/components/layout-router.js","chunks":["app-client-internals:static/chunks/app-client-internals.js"],"name":"","async":false}n7:I{"id":"(app-client)/"])</script>
<script>self.__next_f.push([1, "./node_modules/next/dist/client/components/render-from-template-context.js","chunks":["app-client-internals:static/chunks/app-client-internals.js"],"name":"","async":false}n8:I{"id":"(app-client)/./src/app/page.js","chunks":["app/page:static/chunks/app/page.js"],"name":"","async":false}n"])</script>
<script>self.__next_f.push([1, "1:[[],["$","$L2",null,{"assetPrefix":"","initialCanonicalUrl":"/","initialTree ":["",{"children":["__PAGE__",{}]},"$undéfini","$undéfini",true],"initialHead":["$L3",null],"globalErrorComponent" :"$4","notFound":["$","html",null,{"lang":"fr","children":["$","body",null,{"children":[ "$L5","$undefined",[["$","title",null,{"children":"404 : Cette page est introuvable."}],["$","div", null,{"style":{"fontFamily":"system-ui,"Segoe UI",Roboto,Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji"","height":" 100vh","textAlign":"center","display":"flex","flexDirection":"column","alignItems":"center","justifyContent":"center"},"children":[" $","div",null,{"children":[["$","style",null,{"dangerouslySetInnerHTML":{"__html":"body{color:#000;background:#fff;margin :0}.next-error-h1{border-right:1px solid rgba(0,0,0,.3)}@media (prefers-color-scheme:dark){body{color:#fff;background:# 000}.next-error-h1{border-right:1px solid rgba(255,255,255,.3)}}"}}],["$","h1",null,{"className":"next-error- h1","style":{"display":"inline-block","margin":"0 20px 0 0","padding":"0 23px 0 0","fontSize":24,"fontWeight": 500,"verticalAlign":"top","lineHeight":"49px"},"children":"404"}],["$","div",null,{"style":{"display": "inline-block"},"children":["$","h2",null,{"style":{"fontSize":14,"fontWeight":400,"lineHeight":"49px","margin ":0},"children": "Cette page est introuvable."}]}]]}]}]]]}]}],"asNotFound":false,"children":[["$","html",null,{"lang":"en","children":["$","body",null,{"children":["$","$L6",null,{"parallelRouterKey":"children","segmentPath":["children"],"error":"$undefined","errorStyles":"$undefined","loading":"$undefined","loadingStyles":"$undefined","hasLoading":false,"template":["$","$L7",null,{}],"templateStyles":"$undefined","notFound":"$undefined","notFoundStyles":"$undefined","childProp":{"current":[["$","$L8",null,{"params":{},"searchParams":{}}],null],"segment":"__PAGE__"},"styles":[]}]}]}],null]}]]n"])</script>
<script>self.__next_f.push([1, "5:[[["$","meta",null,{"charSet":"utf-8"}],null,null,null,null, null,null,null,null,null,null,["$","meta",null,{"name":"viewport","content":"width=device-width, initial-scale=1"} ],null,null,null,null,null,null,null,null,null,null,[]],[null,null,null,null],null,null,[null,null,null,null,null ],null,null,null,null,null]n3:[[["$","meta",null,{"charSet":"utf-8"}],["$","title",null ,{"children":"Créer l'application suivante"}],["$","meta",null,{"name":"description","content":"Généré par la création de l'application suivante"}],null, null,null,null,n"])</script>
<script>self.__next_f.push([1, "ull,null,null,null,["$","meta",null,{"name":"viewport","content":"width=device -width, initial-scale=1"}],null,null,null,null,null,null,null,null,null,null,[]],[null,null,null,null],null,null, [null,null,null,null,null],null,null,null,null,null]n"])</script>
</corps>
</html></pre>
<heure />
<p>于 React et DOM 节点的东西 - 基本上是一个空的div 等待注入一些 HTML。我在这里缺少什么？</p>
