About JavaScript Editor — React IDE
JavaScript Editor & Runner is a mobile-first JavaScript and React development environment. Write vanilla JavaScript or React/JSX code with full syntax highlighting and run it instantly — offline, on your device. The built-in console captures console.log output, errors, and warnings in real time. React support means you can prototype and preview components without spinning up a Node server. Whether you're learning JavaScript, testing a snippet, or iterating on a React component during a commute — JavaScript Editor & Runner gives you a capable JS environment wherever you are. Pre-loaded examples cover ES6+ syntax, DOM manipulation, async/await, React components, and more.
See it in action






Everything You Need
JavaScript & React Execution
Run vanilla JS and React/JSX code on-device without a server. Tap Run and see output immediately in the built-in console.
Syntax Highlighting
Full JavaScript and JSX syntax highlighting. ES6+, arrow functions, destructuring, template literals, async/await — all color-coded.
Built-In Console
console.log, console.error, warnings, and runtime exceptions all appear in the integrated console. Debug JS without leaving the app.
React Component Preview
Write JSX React components and preview them directly. Prototype UI components on your phone without a build tool or Node.js.
ES6+ Examples
Pre-loaded examples covering ES6 syntax, arrow functions, Promises, async/await, array methods, destructuring, React components, and more.
Offline & Private
All JavaScript execution happens locally on your device. No cloud, no server, no network. Your scripts stay on your phone.
Ready to Try JavaScript Editor — React IDE?
Free to download. No account required. Available on Android.
Frequently Asked Questions
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