react-code-dataset
/
next.js
/test
/development
/pages-dir
/client-navigation
/fixture
/pages
/head.js
| import React from 'react' | |
| import Head from 'next/head' | |
| export default function HeadPage() { | |
| const [shouldReverseScriptOrder, reverseScriptOrder] = React.useReducer( | |
| (b) => !b, | |
| false | |
| ) | |
| const [shouldInsertScript, toggleScript] = React.useReducer((b) => !b, false) | |
| const scriptAsyncTrue = <script src="/test-async-true.js" async></script> | |
| const scriptAsyncFalse = ( | |
| <script src="/test-async-false.js" async={false}></script> | |
| ) | |
| return ( | |
| <div> | |
| <Head> | |
| {/* this will not render */} | |
| <meta charSet="utf-8" /> | |
| {/* this will get rendered */} | |
| <meta charSet="iso-8859-5" /> | |
| {/* this will not render */} | |
| <meta name="viewport" content="width=device-width" /> | |
| {/* this will override the default */} | |
| <meta name="viewport" content="width=device-width,initial-scale=1" /> | |
| <meta content="my meta" /> | |
| {/* this will not render the content prop */} | |
| <meta name="empty-content" content={undefined} /> | |
| {/* allow duplicates for specific tags */} | |
| <meta property="article:tag" content="tag1" key="tag1key" /> | |
| <meta property="article:tag" content="tag2" key="tag2key" /> | |
| <meta property="dedupe:tag" content="tag3" key="same-key" /> | |
| <meta property="dedupe:tag" content="tag4" key="same-key" /> | |
| <meta property="og:image" content="ogImageTag1" key="ogImageTag1Key" /> | |
| <meta property="og:image" content="ogImageTag2" key="ogImageTag2Key" /> | |
| <meta | |
| property="og:image:alt" | |
| content="ogImageAltTag1" | |
| key="ogImageAltTag1Key" | |
| /> | |
| <meta | |
| property="og:image:alt" | |
| content="ogImageAltTag2" | |
| key="ogImageAltTag2Key" | |
| /> | |
| <meta | |
| property="og:image:width" | |
| content="ogImageWidthTag1" | |
| key="ogImageWidthTag1Key" | |
| /> | |
| <meta | |
| property="og:image:width" | |
| content="ogImageWidthTag2" | |
| key="ogImageWidthTag2Key" | |
| /> | |
| <meta | |
| property="og:image:height" | |
| content="ogImageHeightTag1" | |
| key="ogImageHeightTag1Key" | |
| /> | |
| <meta | |
| property="og:image:height" | |
| content="ogImageHeightTag2" | |
| key="ogImageHeightTag2Key" | |
| /> | |
| <meta | |
| property="og:image:type" | |
| content="ogImageTypeTag1" | |
| key="ogImageTypeTag1Key" | |
| /> | |
| <meta | |
| property="og:image:type" | |
| content="ogImageTypeTag2" | |
| key="ogImageTypeTag2Key" | |
| /> | |
| <meta | |
| property="og:image:secure_url" | |
| content="ogImageSecureUrlTag1" | |
| key="ogImageSecureUrlTag1Key" | |
| /> | |
| <meta | |
| property="og:image:secure_url" | |
| content="ogImageSecureUrlTag2" | |
| key="ogImageSecureUrlTag2Key" | |
| /> | |
| <meta | |
| property="og:image:url" | |
| content="ogImageUrlTag1" | |
| key="ogImageUrlTag1Key" | |
| /> | |
| <meta | |
| property="og:image:url" | |
| content="ogImageUrlTag2" | |
| key="ogImageUrlTag2Key" | |
| /> | |
| <meta property="fb:pages" content="fbpages1" /> | |
| <meta property="fb:pages" content="fbpages2" /> | |
| {/* both meta tags will be rendered since they use unique keys */} | |
| <meta | |
| name="citation_author" | |
| content="authorName1" | |
| key="citationAuthorTag1" | |
| /> | |
| <meta | |
| name="citation_author" | |
| content="authorName2" | |
| key="citationAuthorTag2" | |
| /> | |
| <React.Fragment> | |
| <title>Fragment title</title> | |
| <meta content="meta fragment" /> | |
| </React.Fragment> | |
| {/* the following 2 link tags will both be rendered */} | |
| <link rel="stylesheet" href="/dup-style.css" /> | |
| <link rel="stylesheet" href="/dup-style.css" /> | |
| {/* only one tag will be rendered as they have the same key */} | |
| <link rel="stylesheet" href="dedupe-style.css" key="my-style" /> | |
| <link rel="stylesheet" href="dedupe-style.css" key="my-style" /> | |
| {shouldInsertScript ? scriptAsyncTrue : null} | |
| {/* this should not execute twice on the client */} | |
| {shouldReverseScriptOrder ? scriptAsyncTrue : scriptAsyncFalse} | |
| {/* this should have async set to false on the client */} | |
| {shouldReverseScriptOrder ? scriptAsyncFalse : scriptAsyncTrue} | |
| {/* this should not execute twice on the client (intentionally sets defer to `yas` to test boolean coercion) */} | |
| <script src="/test-defer.js" defer="yas"></script> | |
| {/* such style can be used for alternate links on _app vs individual pages */} | |
| {['pl', 'en'].map((language) => ( | |
| <link | |
| rel="alternate" | |
| key={language} | |
| hrefLang={language} | |
| href={'/first/' + language} | |
| /> | |
| ))} | |
| {['pl', 'en'].map((language) => ( | |
| <link | |
| rel="alternate" | |
| key={language} | |
| hrefLang={language} | |
| href={'/last/' + language} | |
| /> | |
| ))} | |
| </Head> | |
| <h1>I can have meta tags</h1> | |
| <button id="reverseScriptOrder" onClick={reverseScriptOrder}> | |
| Reverse script order | |
| </button> | |
| <button id="toggleScript" onClick={toggleScript}> | |
| Toggle script | |
| </button> | |
| </div> | |
| ) | |
| } | |