Key Features of React Playground
- Babel Transpiling Compile JSX and ES6+ features directly inside your browser on-the-fly.
- Live Interactive Preview Inspect your rendered React components inside a secure live preview pane.
- Console Logs panel Check state mutations, errors, and standard console.log dumps.
React Playground Examples
Standard State Counter
Create a counter component with active state hook tracking.
Input
import React, { useState } from 'react';
export default function Counter() {
const [count, setCount] = useState(0);
return <button onClick={() => setCount(count + 1)}>{count}</button>;
}Output
[Visual interactive button element rendering]How to Use React Playground
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1. Write a React Component
Type a functional component using JSX, hooks, state, or props in the editor.
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2. Click Run
Press Run or ⌘↵. Babel transpiles JSX in-browser and mounts your component to the preview.
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3. See the Live Preview
Your component renders in the Preview panel. Console logs appear in the Console tab.
Common Use Cases for React Playground
- Testing React Components Verify logic of small components, props, and conditional rendering.
- Practicing React Hooks Experiment with useState, useEffect, and custom state triggers.
- Prototyping Interactive Elements Draft responsive buttons, lists, toggles, or input controllers easily.
The Technical Details
The React Playground transpiles JSX code client-side using Babel.js inside your browser, loading standard React dependencies from a CDN and rendering components in a secure local iframe sandbox.
Frequently Asked Questions
Can I use React hooks?
Yes. useState, useEffect, useRef, useCallback, useMemo, and all built-in React 18 hooks are available.
Can I install npm packages?
No. Only React 18 and ReactDOM loaded from CDN are available. No external libraries.
Is JSX compiled on the server?
No. Babel runs in your browser to transpile JSX before execution; no server involved.
Which React version is loaded?
React 18 is loaded from the official CDN (unpkg.com/react@18).