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React Tutorial

This is the React comment box example from the React tutorial.

To use

There are several simple server implementations included. They all serve static files from public/ and handle requests to /api/comments to fetch or add data. Start a server with one of the following:

Node

npm install
node server.js

Python

pip install -r requirements.txt
python server.py

Haskell

cabal sandbox init
cabal install --only-dependencies
ghc Server.hs
./Server

Ruby

ruby server.rb

PHP

php server.php

Go

go run server.go

Lua

go get github.com/xyproto/algernon
# or brew install algernon
algernon server.lua

Perl

cpan Mojolicious
perl server.pl

And visit http://localhost:3000/. Try opening multiple tabs!

Changing the port

You can change the port number by setting the $PORT environment variable before invoking any of the scripts above, e.g.,

PORT=3001 node server.js

About

Code from the React tutorial.

facebook.github.io/react/docs/tutorial.html

Resources

Readme
License
Activity

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0 stars

Watchers

1 watching

Forks

0 forks
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, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n 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;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

Skip to content
BranchesTags
Repository files navigation
Deploy
React Tutorial
This is the React comment box example from the React tutorial.
To use
There are several simple server implementations included. They all serve static files from public/ and handle requests to /api/comments to fetch or add data. Start a server with one of the following:
Node
npm install
node server.js
Python
pip install -r requirements.txt
python server.py
Haskell
cabal sandbox init
cabal install --only-dependencies
ghc Server.hs
./Server
Ruby
ruby server.rb
PHP
php server.php
Go
go run server.go
Lua
go get github.com/xyproto/algernon
# or brew install algernon
algernon server.lua
Perl
cpan Mojolicious
perl server.pl
And visit http://localhost:3000/. Try opening multiple tabs!
Changing the port
You can change the port number by setting the $PORT environment variable before invoking any of the scripts above, e.g.,
PORT=3001 node server.js
About
Code from the React tutorial.
facebook.github.io/react/docs/tutorial.html
Resources
Readme
License
Activity
Stars
0 stars
Watchers
1 watching
Forks
0 forks
Report repository
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Contributors
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, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
Deploy
React Tutorial
This is the React comment box example from the React tutorial.
To use
There are several simple server implementations included. They all serve static files from public/ and handle requests to /api/comments to fetch or add data. Start a server with one of the following:
Node
npm install
node server.js
Python
pip install -r requirements.txt
python server.py
Haskell
cabal sandbox init
cabal install --only-dependencies
ghc Server.hs
./Server
Ruby
ruby server.rb
PHP
php server.php
Go
go run server.go
Lua
go get github.com/xyproto/algernon
# or brew install algernon
algernon server.lua
Perl
cpan Mojolicious
perl server.pl
And visit http://localhost:3000/. Try opening multiple tabs!
Changing the port
You can change the port number by setting the $PORT environment variable before invoking any of the scripts above, e.g.,
PORT=3001 node server.js
About
Code from the React tutorial.
facebook.github.io/react/docs/tutorial.html
Resources
Readme
License
Activity
Stars
0 stars
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
Deploy
React Tutorial
This is the React comment box example from the React tutorial.
To use
There are several simple server implementations included. They all serve static files from public/ and handle requests to /api/comments to fetch or add data. Start a server with one of the following:
Node
npm install
node server.js
Python
pip install -r requirements.txt
python server.py
Haskell
cabal sandbox init
cabal install --only-dependencies
ghc Server.hs
./Server
Ruby
ruby server.rb
PHP
php server.php
Go
go run server.go
Lua
go get github.com/xyproto/algernon
# or brew install algernon
algernon server.lua
Perl
cpan Mojolicious
perl server.pl
And visit http://localhost:3000/. Try opening multiple tabs!
Changing the port
You can change the port number by setting the $PORT environment variable before invoking any of the scripts above, e.g.,
PORT=3001 node server.js
About
Code from the React tutorial.
facebook.github.io/react/docs/tutorial.html
Resources
Readme
License
Activity
Stars
0 stars
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

Skip to content
BranchesTags
Repository files navigation
Deploy
React Tutorial
This is the React comment box example from the React tutorial.
To use
There are several simple server implementations included. They all serve static files from public/ and handle requests to /api/comments to fetch or add data. Start a server with one of the following:
Node
npm install
node server.js
Python
pip install -r requirements.txt
python server.py
Haskell
cabal sandbox init
cabal install --only-dependencies
ghc Server.hs
./Server
Ruby
ruby server.rb
PHP
php server.php
Go
go run server.go
Lua
go get github.com/xyproto/algernon
# or brew install algernon
algernon server.lua
Perl
cpan Mojolicious
perl server.pl
And visit http://localhost:3000/. Try opening multiple tabs!
Changing the port
You can change the port number by setting the $PORT environment variable before invoking any of the scripts above, e.g.,
PORT=3001 node server.js
About
Code from the React tutorial.
facebook.github.io/react/docs/tutorial.html
Resources
Readme
License
Activity
Stars
0 stars
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
Deploy
React Tutorial
This is the React comment box example from the React tutorial.
To use
There are several simple server implementations included. They all serve static files from public/ and handle requests to /api/comments to fetch or add data. Start a server with one of the following:
Node
npm install
node server.js
Python
pip install -r requirements.txt
python server.py
Haskell
cabal sandbox init
cabal install --only-dependencies
ghc Server.hs
./Server
Ruby
ruby server.rb
PHP
php server.php
Go
go run server.go
Lua
go get github.com/xyproto/algernon
# or brew install algernon
algernon server.lua
Perl
cpan Mojolicious
perl server.pl
And visit http://localhost:3000/. Try opening multiple tabs!
Changing the port
You can change the port number by setting the $PORT environment variable before invoking any of the scripts above, e.g.,
PORT=3001 node server.js
About
Code from the React tutorial.
facebook.github.io/react/docs/tutorial.html
Resources
Readme
License
Activity
Stars
0 stars
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
BranchesTags
Repository files navigation
Deploy
React Tutorial
This is the React comment box example from the React tutorial.
To use
There are several simple server implementations included. They all serve static files from public/ and handle requests to /api/comments to fetch or add data. Start a server with one of the following:
Node
npm install
node server.js
Python
pip install -r requirements.txt
python server.py
Haskell
cabal sandbox init
cabal install --only-dependencies
ghc Server.hs
./Server
Ruby
ruby server.rb
PHP
php server.php
Go
go run server.go
Lua
go get github.com/xyproto/algernon
# or brew install algernon
algernon server.lua
Perl
cpan Mojolicious
perl server.pl
And visit http://localhost:3000/. Try opening multiple tabs!
Changing the port
You can change the port number by setting the $PORT environment variable before invoking any of the scripts above, e.g.,
PORT=3001 node server.js
About
Code from the React tutorial.
facebook.github.io/react/docs/tutorial.html
Resources
Readme
License
Activity
Stars
0 stars
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

Skip to content
BranchesTags
Repository files navigation
Deploy
React Tutorial
This is the React comment box example from the React tutorial.
To use
There are several simple server implementations included. They all serve static files from public/ and handle requests to /api/comments to fetch or add data. Start a server with one of the following:
Node
npm install
node server.js
Python
pip install -r requirements.txt
python server.py
Haskell
cabal sandbox init
cabal install --only-dependencies
ghc Server.hs
./Server
Ruby
ruby server.rb
PHP
php server.php
Go
go run server.go
Lua
go get github.com/xyproto/algernon
# or brew install algernon
algernon server.lua
Perl
cpan Mojolicious
perl server.pl
And visit http://localhost:3000/. Try opening multiple tabs!
Changing the port
You can change the port number by setting the $PORT environment variable before invoking any of the scripts above, e.g.,
PORT=3001 node server.js
About
Code from the React tutorial.
facebook.github.io/react/docs/tutorial.html
Resources
Readme
License
Activity
Stars
0 stars
Watchers
1 watching
Forks
0 forks
Report repository
Releases
Packages
Contributors
Languages