Links
Description
React is a library. It lets you put components together, but it doesn’t prescribe how to do routing and data fetching.
To build an entire app with React, we recommend a full-stack React framework like Next.js or Remix.
Command line
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# create a new project (framework: React, variant: TypeScript)
npm create vite@latest
# install the packages
npm install
# run the project
npm run dev
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Basic App
| public/index.html
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<body>
<!-- hosts the React application -->
<div id="root"></div>
<script type="module" src="/src/main.tsx"></script>
</body>
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| src/main.tsx
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import { StrictMode } from 'react'
import { createRoot } from 'react-dom/client'
import './index.css'
createRoot(document.getElementById('root')!).render(
<StrictMode>
<h1>My App</h1>
</StrictMode>,
)
|
| package.json
|
{
"name": "vite-project",
"private": true,
"version": "0.0.0",
"type": "module",
"scripts": {
"dev": "vite",
"build": "tsc -b && vite build",
"lint": "eslint .",
"preview": "vite preview"
},
"dependencies": {
"react": "^18.3.1",
"react-dom": "^18.3.1"
},
"devDependencies": {
"@eslint/js": "^9.13.0",
"@types/react": "^18.3.11",
"@types/react-dom": "^18.3.1",
"@vitejs/plugin-react": "^4.3.3",
"eslint": "^9.13.0",
"eslint-plugin-react-hooks": "^5.0.0",
"eslint-plugin-react-refresh": "^0.4.13",
"globals": "^15.11.0",
"typescript": "~5.6.2",
"typescript-eslint": "^8.10.0",
"vite": "^5.4.9"
}
}
|
Component
| src/App.tsx
|
import { useState } from 'react'
import './App.css'
function App() {
const [count, setCount] = useState(0)
return (
<>
<h1>My App</h1>
</>
)
}
export default App
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| src/main.tsx
|
import { StrictMode } from 'react'
import { createRoot } from 'react-dom/client'
import App from './App.tsx'
createRoot(document.getElementById('root')!).render(
<StrictMode>
<App />
</StrictMode>,
)
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Styling
ClassName
| App.tsx
|
<div className="container"></div>
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Visual Studio Code
Debug
Install the Debugger for Firefox extension.
| .vscode/launch.json
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{
"version": "0.2.0",
"configurations": [
{
"name": "Launch Firefox against localhost",
"type": "firefox",
"request": "launch",
"url": "http://localhost:5173",
"webRoot": "${workspaceFolder}"
}
]
}
|
|
// use the filename as the component name, so PascalCase
import App from './App.tsx'
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Component libraries
