React 18 / Vite / TSX Supported

Online React IDE with Live Preview, JSX/TSX & Component Design

Build responsive React applications directly in your browser. Complete with Vite fast hot-reloading, Monaco JSX/TSX editor, npm package management, synchronized live preview, and autonomous AI pair programming.

Modern React Development in the Cloud

A full frontend development environment with instant rendering and real-time component diagnostics.

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React 18 & Hooks Intelligence

Monaco editor configured with TypeScript language server for full JSX and TSX prop checking, hook dependency analysis (useEffect, useCallback), and component refactoring.

  • Strict typing for component props & events
  • Automatic React & hook import suggestions
  • Custom hook navigation & diagnostics
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Vite Fast Refresh & Preview

Experience sub-second hot module replacement (HMR). Save your TSX or CSS files and observe immediate UI state preservation in the live preview window.

  • Synchronized DOM preview frame
  • Mobile & desktop viewport toggle
  • Console error & warning overlays
🎨

Visual UI Component Builder

Switch between raw code and visual drag-and-drop component design. Lay out buttons, input forms, cards, and responsive grids with clean code generation.

  • Two-way code and visual synchronization
  • Palette of standard HTML5 & modern UI elements
  • Responsive layout inspect controls
📦

npm & pnpm Package Imports

Install third-party UI libraries, state managers (Zustand, Redux Toolkit), and utility packages effortlessly using the integrated cloud terminal.

  • Lucide, Radix, Framer Motion support
  • Instant cached package downloads
  • Zero local storage consumed
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Vitest & React Testing Library

Run component unit tests and user interaction tests with Vitest or Jest. View rendered DOM assertions and component failure snapshots in the Tests panel.

  • User event interaction testing
  • Component snapshot comparison
  • Quick jump to failing assertion lines
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AI React Engineering Assistant

Ask the AI assistant to scaffold complex components, implement custom hooks, write Tailwind or CSS modules, handle API data fetching, and fix re-rendering loops.

  • Component decomposition & prop lifting
  • Zod validation & form integration
  • Performance memoization suggestions

Write Responsive TSX Components with Instant Preview

Build accessible, stateful React components with clean TypeScript typing in OnlineAIIDE.

src/components/ProjectCard.tsx REACT 18 TSX
import React, { useState } from 'react';

interface ProjectCardProps {
  title: string;
  language: string;
  stars: number;
  onDeploy: (title: string) => void;
}

export const ProjectCard: React.FC<ProjectCardProps> = ({ title, language, stars, onDeploy }) => {
  const [isDeploying, setIsDeploying] = useState(false);

  const handleDeployClick = async () => {
    setIsDeploying(true);
    await onDeploy(title);
    setIsDeploying(false);
  };

  return (
    <div className="project-card">
      <div className="card-header">
        <h3>{title}</h3>
        <span className="badge">{language}</span>
      </div>
      <p>Stars: <strong>{stars}</strong></p>
      <button onClick={handleDeployClick} disabled={isDeploying}>
        {isDeploying ? 'Deploying...' : 'Deploy to Cloud'}
      </button>
    </div>
  );
};

React Environment Specifications

Toolchains and frontend libraries supported in OnlineAIIDE.

Capability Supported Versions Platform Status
React Framework React 18.x, React 19 Ready Production Ready
Bundler & Dev Server Vite 5+, Rollup Production Ready
Language Syntax TypeScript 5.x, TSX, JSX, ESNext Production Ready
Package Managers pnpm 9+, npm 10+, yarn 1.22+ Production Ready
Testing Tools Vitest, Jest, React Testing Library Production Ready

Frequently Asked Questions

Common questions about developing React in OnlineAIIDE.

Can I connect my React frontend to a backend API?
Yes! You can run a backend API (such as Spring Boot, Express, or FastAPI) inside your OnlineAIIDE workspace or proxy requests to external staging APIs seamlessly.
How does visual component drag-and-drop integrate with code?
OnlineAIIDE features a two-way synchronization engine. Changes made visually update the TSX/HTML source code directly, and manual code edits immediately reflect in the visual canvas.
Can I build production static assets (dist)?
Yes. Run npm run build in the cloud terminal. Vite compiles and minifies your React application into the dist/ folder, ready for export or cloud hosting.

Build React Applications in Your Browser

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