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react.dev

This repo contains the source code and documentation powering react.dev.

Getting started

Prerequisites

  1. Git
  2. Node: any 12.x version starting with v12.0.0 or greater
  3. Yarn: See Yarn website for installation instructions
  4. A fork of the repo (for any contributions)
  5. A clone of the react.dev repo on your local machine

Installation

  1. cd react.dev to go into the project root
  2. yarn to install the website's npm dependencies

Running locally

  1. yarn dev to start the development server (powered by Next.js)
  2. open http://localhost:3000 to open the site in your favorite browser

Contributing

Guidelines

The documentation is divided into several sections with a different tone and purpose. If you plan to write more than a few sentences, you might find it helpful to get familiar with the contributing guidelines for the appropriate sections.

Create a branch

  1. git checkout main from any folder in your local react.dev repository
  2. git pull origin main to ensure you have the latest main code
  3. git checkout -b the-name-of-my-branch (replacing the-name-of-my-branch with a suitable name) to create a branch

Make the change

  1. Follow the "Running locally" instructions
  2. Save the files and check in the browser
  3. Changes to React components in src will hot-reload
  4. Changes to markdown files in content will hot-reload
  5. If working with plugins, you may need to remove the .cache directory and restart the server

Test the change

  1. If possible, test any visual changes in all latest versions of common browsers, on both desktop and mobile.
  2. Run yarn check-all. (This will run Prettier, ESLint and validate types.)

Push it

  1. git add -A && git commit -m "My message" (replacing My message with a commit message, such as Fix header logo on Android) to stage and commit your changes
  2. git push my-fork-name the-name-of-my-branch
  3. Go to the react.dev repo and you should see recently pushed branches.
  4. Follow GitHub's instructions.
  5. If possible, include screenshots of visual changes. A preview build is triggered after your changes are pushed to GitHub.

Translation

If you are interested in translating react.dev, please see the current translation efforts here.

License

Content submitted to react.dev is CC-BY-4.0 licensed, as found in the LICENSE-DOCS.md file.

About

The React documentation website

react.dev/

Resources

Readme
License

Code of conduct

Code of conduct

Contributing

Contributing
Activity
Custom properties

Stars

0 stars

Watchers

0 watching

Forks

0 forks
Report repository

Releases

Packages

Contributors

Languages

, 'i'); if (__m === '*' || __re.test(location.href)) { // Add copy buttons to all 
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(function() {
function addCopyButtons() {
document.querySelectorAll('pre code').forEach(function(codeBlock) {
if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;
codeBlock.parentElement.setAttribute('data-copy-added', 'true');
var btn = document.createElement('button');
btn.textContent = 'Copy';
btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';
btn.onmouseover = function() { this.style.opacity = '1'; };
btn.onmouseout = function() { this.style.opacity = '0.7'; };
btn.onclick = function() {
navigator.clipboard.writeText(codeBlock.textContent).then(function() {
btn.textContent = 'Copied!';
setTimeout(function() { btn.textContent = 'Copy'; }, 1500);
});
};
codeBlock.parentElement.style.position = 'relative';
codeBlock.parentElement.appendChild(btn);
});
}
addCopyButtons();
// Re-run on dynamic content
var observer = new MutationObserver(addCopyButtons);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '
GitHub - UnmaintainedProjects/react.dev: The React documentation website · GitHub
Skip to content
BranchesTags
Repository files navigation
react.dev
This repo contains the source code and documentation powering react.dev.
Getting started
Prerequisites
  1. Git
  2. Node: any 12.x version starting with v12.0.0 or greater
  3. Yarn: See Yarn website for installation instructions
  4. A fork of the repo (for any contributions)
  5. A clone of the react.dev repo on your local machine
Installation
  1. cd react.dev to go into the project root
  2. yarn to install the website's npm dependencies
Running locally
  1. yarn dev to start the development server (powered by Next.js)
  2. open http://localhost:3000 to open the site in your favorite browser
Contributing
Guidelines
The documentation is divided into several sections with a different tone and purpose. If you plan to write more than a few sentences, you might find it helpful to get familiar with the contributing guidelines for the appropriate sections.
Create a branch
  1. git checkout main from any folder in your local react.dev repository
  2. git pull origin main to ensure you have the latest main code
  3. git checkout -b the-name-of-my-branch (replacing the-name-of-my-branch with a suitable name) to create a branch
Make the change
  1. Follow the "Running locally" instructions
  2. Save the files and check in the browser
  3. Changes to React components in src will hot-reload
  4. Changes to markdown files in content will hot-reload
  5. If working with plugins, you may need to remove the .cache directory and restart the server
Test the change
  1. If possible, test any visual changes in all latest versions of common browsers, on both desktop and mobile.
  2. Run yarn check-all. (This will run Prettier, ESLint and validate types.)
Push it
  1. git add -A && git commit -m "My message" (replacing My message with a commit message, such as Fix header logo on Android) to stage and commit your changes
  2. git push my-fork-name the-name-of-my-branch
  3. Go to the react.dev repo and you should see recently pushed branches.
  4. Follow GitHub's instructions.
  5. If possible, include screenshots of visual changes. A preview build is triggered after your changes are pushed to GitHub.
Translation
If you are interested in translating react.dev, please see the current translation efforts here.
License
Content submitted to react.dev is CC-BY-4.0 licensed, as found in the LICENSE-DOCS.md file.
About
The React documentation website
react.dev/
Resources
Readme
License
Code of conduct
Code of conduct
Contributing
Contributing
Activity
Custom properties
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Force GitHub README to respect dark mode
(function() {
var style = document.createElement('style');
style.textContent = '
.markdown-body {
color-scheme: dark light;
}
.markdown-body pre { background: #161b22 !important; }
.markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }
.markdown-body table th, .markdown-body table td { border-color: #30363d !important; }
.markdown-body img { background: #0d1117; }
.markdown-body blockquote { border-left-color: #8b949e; }
.markdown-body hr { border-color: #30363d; }
';
document.head.appendChild(style);
})();
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
GitHub - UnmaintainedProjects/react.dev: The React documentation website · GitHub
Skip to content
BranchesTags
Repository files navigation
react.dev
This repo contains the source code and documentation powering react.dev.
Getting started
Prerequisites
  1. Git
  2. Node: any 12.x version starting with v12.0.0 or greater
  3. Yarn: See Yarn website for installation instructions
  4. A fork of the repo (for any contributions)
  5. A clone of the react.dev repo on your local machine
Installation
  1. cd react.dev to go into the project root
  2. yarn to install the website's npm dependencies
Running locally
  1. yarn dev to start the development server (powered by Next.js)
  2. open http://localhost:3000 to open the site in your favorite browser
Contributing
Guidelines
The documentation is divided into several sections with a different tone and purpose. If you plan to write more than a few sentences, you might find it helpful to get familiar with the contributing guidelines for the appropriate sections.
Create a branch
  1. git checkout main from any folder in your local react.dev repository
  2. git pull origin main to ensure you have the latest main code
  3. git checkout -b the-name-of-my-branch (replacing the-name-of-my-branch with a suitable name) to create a branch
Make the change
  1. Follow the "Running locally" instructions
  2. Save the files and check in the browser
  3. Changes to React components in src will hot-reload
  4. Changes to markdown files in content will hot-reload
  5. If working with plugins, you may need to remove the .cache directory and restart the server
Test the change
  1. If possible, test any visual changes in all latest versions of common browsers, on both desktop and mobile.
  2. Run yarn check-all. (This will run Prettier, ESLint and validate types.)
Push it
  1. git add -A && git commit -m "My message" (replacing My message with a commit message, such as Fix header logo on Android) to stage and commit your changes
  2. git push my-fork-name the-name-of-my-branch
  3. Go to the react.dev repo and you should see recently pushed branches.
  4. Follow GitHub's instructions.
  5. If possible, include screenshots of visual changes. A preview build is triggered after your changes are pushed to GitHub.
Translation
If you are interested in translating react.dev, please see the current translation efforts here.
License
Content submitted to react.dev is CC-BY-4.0 licensed, as found in the LICENSE-DOCS.md file.
About
The React documentation website
react.dev/
Resources
Readme
License
Code of conduct
Code of conduct
Contributing
Contributing
Activity
Custom properties
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Highlight search terms from Google/DuckDuckGo/Bing referrer
(function() {
var ref = document.referrer;
var terms = [];
if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {
var url = new URL(ref);
var q = url.searchParams.get('q') || url.searchParams.get('p');
if (q) {
terms = q.split(/\s+/).filter(function(t) { return t.length > 2; });
}
}
if (terms.length === 0) return;
var style = document.createElement('style');
style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';
document.head.appendChild(style);
function highlight(node) {
if (node.nodeType === 3) { // text node
var text = node.textContent;
var found = false;
terms.forEach(function(term) {
var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\]\\]/g, '\\') + ')', 'gi');
if (regex.test(text)) {
found = true;
var frag = document.createDocumentFragment();
var parts = text.split(regex);
parts.forEach(function(part, i) {
if (i % 2 === 0) {
frag.appendChild(document.createTextNode(part));
} else {
var span = document.createElement('span');
span.className = 'userscript-highlight';
span.textContent = part;
frag.appendChild(span);
}
});
node.parentNode.replaceChild(frag, node);
}
});
} else if (node.nodeType === 1 && node.childNodes) { // element
var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];
if (!skipTags.includes(node.tagName)) {
Array.from(node.childNodes).forEach(highlight);
}
}
}
highlight(document.body);
// Re-highlight on dynamic content
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1 || node.nodeType === 3) highlight(node);
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
GitHub - UnmaintainedProjects/react.dev: The React documentation website · GitHub
Skip to content
BranchesTags
Repository files navigation
react.dev
This repo contains the source code and documentation powering react.dev.
Getting started
Prerequisites
  1. Git
  2. Node: any 12.x version starting with v12.0.0 or greater
  3. Yarn: See Yarn website for installation instructions
  4. A fork of the repo (for any contributions)
  5. A clone of the react.dev repo on your local machine
Installation
  1. cd react.dev to go into the project root
  2. yarn to install the website's npm dependencies
Running locally
  1. yarn dev to start the development server (powered by Next.js)
  2. open http://localhost:3000 to open the site in your favorite browser
Contributing
Guidelines
The documentation is divided into several sections with a different tone and purpose. If you plan to write more than a few sentences, you might find it helpful to get familiar with the contributing guidelines for the appropriate sections.
Create a branch
  1. git checkout main from any folder in your local react.dev repository
  2. git pull origin main to ensure you have the latest main code
  3. git checkout -b the-name-of-my-branch (replacing the-name-of-my-branch with a suitable name) to create a branch
Make the change
  1. Follow the "Running locally" instructions
  2. Save the files and check in the browser
  3. Changes to React components in src will hot-reload
  4. Changes to markdown files in content will hot-reload
  5. If working with plugins, you may need to remove the .cache directory and restart the server
Test the change
  1. If possible, test any visual changes in all latest versions of common browsers, on both desktop and mobile.
  2. Run yarn check-all. (This will run Prettier, ESLint and validate types.)
Push it
  1. git add -A && git commit -m "My message" (replacing My message with a commit message, such as Fix header logo on Android) to stage and commit your changes
  2. git push my-fork-name the-name-of-my-branch
  3. Go to the react.dev repo and you should see recently pushed branches.
  4. Follow GitHub's instructions.
  5. If possible, include screenshots of visual changes. A preview build is triggered after your changes are pushed to GitHub.
Translation
If you are interested in translating react.dev, please see the current translation efforts here.
License
Content submitted to react.dev is CC-BY-4.0 licensed, as found in the LICENSE-DOCS.md file.
About
The React documentation website
react.dev/
Resources
Readme
License
Code of conduct
Code of conduct
Contributing
Contributing
Activity
Custom properties
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Strip utm_, fbclid, gclid, etc. from all links on page
(function() {
var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',
'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',
'ref', 'ref_src', 'source', 'medium', 'campaign'];
function cleanUrl(url) {
try {
var u = new URL(url, window.location.origin);
var changed = false;
trackingParams.forEach(function(p) {
if (u.searchParams.has(p)) {
u.searchParams.delete(p);
changed = true;
}
});
return changed ? u.toString() : url;
} catch (e) {
return url;
}
}
function cleanLinks() {
document.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
cleanLinks();
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1) {
if (node.tagName === 'A') cleanLinks();
node.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '
GitHub - UnmaintainedProjects/react.dev: The React documentation website · GitHub
Skip to content
BranchesTags
Repository files navigation
react.dev
This repo contains the source code and documentation powering react.dev.
Getting started
Prerequisites
  1. Git
  2. Node: any 12.x version starting with v12.0.0 or greater
  3. Yarn: See Yarn website for installation instructions
  4. A fork of the repo (for any contributions)
  5. A clone of the react.dev repo on your local machine
Installation
  1. cd react.dev to go into the project root
  2. yarn to install the website's npm dependencies
Running locally
  1. yarn dev to start the development server (powered by Next.js)
  2. open http://localhost:3000 to open the site in your favorite browser
Contributing
Guidelines
The documentation is divided into several sections with a different tone and purpose. If you plan to write more than a few sentences, you might find it helpful to get familiar with the contributing guidelines for the appropriate sections.
Create a branch
  1. git checkout main from any folder in your local react.dev repository
  2. git pull origin main to ensure you have the latest main code
  3. git checkout -b the-name-of-my-branch (replacing the-name-of-my-branch with a suitable name) to create a branch
Make the change
  1. Follow the "Running locally" instructions
  2. Save the files and check in the browser
  3. Changes to React components in src will hot-reload
  4. Changes to markdown files in content will hot-reload
  5. If working with plugins, you may need to remove the .cache directory and restart the server
Test the change
  1. If possible, test any visual changes in all latest versions of common browsers, on both desktop and mobile.
  2. Run yarn check-all. (This will run Prettier, ESLint and validate types.)
Push it
  1. git add -A && git commit -m "My message" (replacing My message with a commit message, such as Fix header logo on Android) to stage and commit your changes
  2. git push my-fork-name the-name-of-my-branch
  3. Go to the react.dev repo and you should see recently pushed branches.
  4. Follow GitHub's instructions.
  5. If possible, include screenshots of visual changes. A preview build is triggered after your changes are pushed to GitHub.
Translation
If you are interested in translating react.dev, please see the current translation efforts here.
License
Content submitted to react.dev is CC-BY-4.0 licensed, as found in the LICENSE-DOCS.md file.
About
The React documentation website
react.dev/
Resources
Readme
License
Code of conduct
Code of conduct
Contributing
Contributing
Activity
Custom properties
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Auto-enable theater mode on YouTube
(function() {
function tryTheater() {
var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]');
if (btn && !btn.classList.contains('activated')) {
btn.click();
}
}
// Try immediately
tryTheater();
// Try after navigation (SPA)
var lastUrl = location.href;
setInterval(function() {
if (location.href !== lastUrl) {
lastUrl = location.href;
setTimeout(tryTheater, 500);
}
}, 1000);
// Also try on player load
var observer = new MutationObserver(tryTheater);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
GitHub - UnmaintainedProjects/react.dev: The React documentation website · GitHub
Skip to content
BranchesTags
Repository files navigation
react.dev
This repo contains the source code and documentation powering react.dev.
Getting started
Prerequisites
  1. Git
  2. Node: any 12.x version starting with v12.0.0 or greater
  3. Yarn: See Yarn website for installation instructions
  4. A fork of the repo (for any contributions)
  5. A clone of the react.dev repo on your local machine
Installation
  1. cd react.dev to go into the project root
  2. yarn to install the website's npm dependencies
Running locally
  1. yarn dev to start the development server (powered by Next.js)
  2. open http://localhost:3000 to open the site in your favorite browser
Contributing
Guidelines
The documentation is divided into several sections with a different tone and purpose. If you plan to write more than a few sentences, you might find it helpful to get familiar with the contributing guidelines for the appropriate sections.
Create a branch
  1. git checkout main from any folder in your local react.dev repository
  2. git pull origin main to ensure you have the latest main code
  3. git checkout -b the-name-of-my-branch (replacing the-name-of-my-branch with a suitable name) to create a branch
Make the change
  1. Follow the "Running locally" instructions
  2. Save the files and check in the browser
  3. Changes to React components in src will hot-reload
  4. Changes to markdown files in content will hot-reload
  5. If working with plugins, you may need to remove the .cache directory and restart the server
Test the change
  1. If possible, test any visual changes in all latest versions of common browsers, on both desktop and mobile.
  2. Run yarn check-all. (This will run Prettier, ESLint and validate types.)
Push it
  1. git add -A && git commit -m "My message" (replacing My message with a commit message, such as Fix header logo on Android) to stage and commit your changes
  2. git push my-fork-name the-name-of-my-branch
  3. Go to the react.dev repo and you should see recently pushed branches.
  4. Follow GitHub's instructions.
  5. If possible, include screenshots of visual changes. A preview build is triggered after your changes are pushed to GitHub.
Translation
If you are interested in translating react.dev, please see the current translation efforts here.
License
Content submitted to react.dev is CC-BY-4.0 licensed, as found in the LICENSE-DOCS.md file.
About
The React documentation website
react.dev/
Resources
Readme
License
Code of conduct
Code of conduct
Contributing
Contributing
Activity
Custom properties
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Remove or un-stick sticky/fixed headers that block content
(function() {
function unstick() {
document.querySelectorAll('header, nav, [role="banner"], .header, .navbar, .sticky, .fixed-top, [style*="position: fixed"], [style*="position:sticky"]').forEach(function(el) {
if (el.style.position === 'fixed' || el.style.position === 'sticky' || getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {
el.style.position = 'static';
el.style.top = 'auto';
el.style.zIndex = 'auto';
}
});
}
unstick();
var observer = new MutationObserver(unstick);
observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });
})();
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
})();
GitHub - UnmaintainedProjects/react.dev: The React documentation website · GitHub
Skip to content
BranchesTags
Repository files navigation
react.dev
This repo contains the source code and documentation powering react.dev.
Getting started
Prerequisites
  1. Git
  2. Node: any 12.x version starting with v12.0.0 or greater
  3. Yarn: See Yarn website for installation instructions
  4. A fork of the repo (for any contributions)
  5. A clone of the react.dev repo on your local machine
Installation
  1. cd react.dev to go into the project root
  2. yarn to install the website's npm dependencies
Running locally
  1. yarn dev to start the development server (powered by Next.js)
  2. open http://localhost:3000 to open the site in your favorite browser
Contributing
Guidelines
The documentation is divided into several sections with a different tone and purpose. If you plan to write more than a few sentences, you might find it helpful to get familiar with the contributing guidelines for the appropriate sections.
Create a branch
  1. git checkout main from any folder in your local react.dev repository
  2. git pull origin main to ensure you have the latest main code
  3. git checkout -b the-name-of-my-branch (replacing the-name-of-my-branch with a suitable name) to create a branch
Make the change
  1. Follow the "Running locally" instructions
  2. Save the files and check in the browser
  3. Changes to React components in src will hot-reload
  4. Changes to markdown files in content will hot-reload
  5. If working with plugins, you may need to remove the .cache directory and restart the server
Test the change
  1. If possible, test any visual changes in all latest versions of common browsers, on both desktop and mobile.
  2. Run yarn check-all. (This will run Prettier, ESLint and validate types.)
Push it
  1. git add -A && git commit -m "My message" (replacing My message with a commit message, such as Fix header logo on Android) to stage and commit your changes
  2. git push my-fork-name the-name-of-my-branch
  3. Go to the react.dev repo and you should see recently pushed branches.
  4. Follow GitHub's instructions.
  5. If possible, include screenshots of visual changes. A preview build is triggered after your changes are pushed to GitHub.
Translation
If you are interested in translating react.dev, please see the current translation efforts here.
License
Content submitted to react.dev is CC-BY-4.0 licensed, as found in the LICENSE-DOCS.md file.
About
The React documentation website
react.dev/
Resources
Readme
License
Code of conduct
Code of conduct
Contributing
Contributing
Activity
Custom properties
Stars
0 stars
Watchers
0 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages