JavaScript Playground

The #1 JavaScript playground with AI that writes code for you.

Describe what you want to build. AI generates the code. See it run instantly. Free online JavaScript playground with live preview, npm packages, and real project support. Trusted by 1.1M+ developers worldwide.

Open Playground

No credit card required · Free to use

or download desktop client forMac, Windows, Linux

1.1M+

Developers

23M+

Projects Created

2016

Since

TRUSTED BY

NEW

AI Website Builder

3 modes: Agent (autonomous), Plan (guided), Ask (learn). 15+ models including GPT-5.2, Claude Opus 4.5, Gemini 3 Pro. Watch AI build in real-time.

Agent ModePlan Mode15+ AI ModelsReal-Time Streaming

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Built for Everyone

Whether you're learning JavaScript or building production apps, this playground has you covered

For Beginners

Learn JavaScript without installing anything. Write code, see results instantly. Perfect JavaScript playground for beginners who want to start coding immediately.

No downloads, no configuration, no command line. This free JavaScript sandbox runs entirely in your browser. Follow along with tutorials and see your code execute in real-time. Perfect online JavaScript playground for learning to code.

✓Zero setup required - just open and code
✓Built-in tutorials for learning JavaScript
✓Instant feedback with live preview
✓Helpful error messages and debugging

Best for: Students, coding bootcamps, JavaScript learners, online courses

For Professionals

Prototype faster with AI-powered code generation. Import npm packages instantly, build with React/Vue/TypeScript, and publish to production with one click.

This online JavaScript playground gives you the power of a full IDE without the setup time. AI understands your project context and writes complete features, not just autocomplete suggestions. The best JS playground for rapid prototyping.

✓AI coding assistant writes working code
✓Access 2M+ npm packages instantly
✓TypeScript, JSX, and ES2026 support
✓One-click deployment to custom domains
✓Multi-file projects with hot reload

Best for: Senior developers, prototyping, MVPs, client demos, rapid testing

For Teams

Collaborate in real-time with your team. Conduct live coding interviews, pair program, or teach workshops. Multiple developers can edit the same JavaScript playground simultaneously.

This online code playground supports real-time collaboration out of the box. Share a URL and start coding together. Perfect for technical interviews, pair programming, and remote teams. The best JavaScript sandbox for collaborative coding.

✓Real-time collaborative editing
✓Live cursors and selections
✓Share via URL - no account required
✓Perfect for coding interviews
✓Team workspaces for organization

Best for: Technical interviews, pair programming, code reviews, teaching, remote teams

All JavaScript Frameworks Supported

Build with React, Vue, Angular, Svelte, TypeScript, or vanilla JavaScript. Style with Tailwind CSS, Bootstrap, or any CSS framework. Our JS playground comes pre-configured with all tooling.

React·Vue·Angular·TypeScript·Tailwind·HTML

Beyond JavaScript: Multi-Language Support

While PlayCode started as a JavaScript playground, we've expanded to support Python, C++, C, Go, SQL, and more. Each compiler runs code directly in your browser with instant feedback.

Python Compiler·C++ Compiler·C Compiler·Go Compiler·JavaScript Compiler

Free Developer Tools

Beyond our JavaScript playground, we offer productivity tools for developers. All free, all in your browser. No signup required.

JSON Formatter·JSON Diff·JSON to TypeScript·Regex Tester·HTML Runner

New to JavaScript?

Start with these beginner-friendly tutorials

letVariables "A"Data Types fnFunctions +Operators >_Console { }Scope asyncAsync =>Types //Comments ( )Params

Get on Board

Quick Start from a Template. Start instantly using pre-made templates. Over 2 million NPM packages available from the start. React, Vue, Lodash, RxJs, p5.js, Three.js and more.

See Result as You Type. Experience the fastest coding experience ever with PlayCode. Instantly observe the results as you type.

Debug in Console. Enhance your speed and debugging skills rapidly using PlayCode's efficient platform.

Live collaboration is built-in. Conduct coding interviews or create together with others from anywhere in the world, on any device.

          
            // Task 1: Sum of All Elements in an Array
// Example:
console.log(sumArray([1, 2, 3, 4])); // 10

          
            // Hmm... Let me try
function sumArray(arr) {
    return arr.reduce((acc, curr) => acc + curr, 0);
}

// That's a really elegant solution!

Deploy and Share your Project. Make your projects live with just one click. With zero setup and custom domains, sharing your web apps with the world has never been simpler.

.playcode.io

Online Playgrounds & Compilers

Write, compile, and run code instantly in your browser. No setup required.

AI Website Builder

Build sites with AI

JavaScript Compiler

Compile & run JS instantly

Python Compiler

Compile Python online

React Playground

Build React apps online

TypeScript Playground

Write TypeScript online

Vue Playground

Build Vue.js apps online

Tailwind Playground

Design with Tailwind CSS

Features

Code Autocomplete. Enhance your coding speed and efficiency with smart code autocomplete feature. Avoid checking the documentation frequently.

Bug Finder. PlayCode can identify and display all errors, providing assistance to fix them. Write, run code, correct any errors quickly.

The Most Flexible Layout.

Arrange panels as you like.

Upload Assets. Images, videos, sounds, shaders and others.

Color Themes.

Feels great in any environment.

Ready to use
JavaScript Playground

No need to configure your own IDE preset, start immediately.

Open Playground

Code seamlessly from any device

Jumping from your Mac to your iPad to your iPhone is no problem. Web editor is optimized for all devices.

Frequently Asked Questions

Everything you need to know about our JavaScript playground

What is a JavaScript playground?

A JavaScript playground is an online code editor where you can write, run, and test JavaScript code instantly in your browser. PlayCode is a free JavaScript playground that supports npm packages, React, Vue, TypeScript, and real-time collaboration. No installation or setup required.

Is PlayCode free to use?

Yes, PlayCode is free to use. You can write unlimited JavaScript code, use npm packages, create multi-file projects, and share your work via public URLs without paying anything. Pro features like AI assistance, private projects, and custom domains are available for subscribers.

Do I need to sign up or install anything?

No signup required to start coding. Simply open PlayCode in your browser and start writing JavaScript immediately. All code runs directly in your browser, so there's nothing to install. You can optionally create an account to save projects and access them across devices.

Can I use npm packages in the playground?

Yes! PlayCode supports over 2 million npm packages. Simply import any package like React, Vue, Lodash, or Axios, and our JavaScript playground fetches and bundles it automatically. No npm install command needed. Popular packages are cached for instant loading.

What frameworks are supported?

PlayCode supports all major JavaScript frameworks and libraries: React, Vue, Angular, Svelte, Solid.js, TypeScript, and vanilla JavaScript. You can also use CSS frameworks like Tailwind CSS, Bootstrap, and Material UI. The playground comes pre-configured with all necessary tooling.

How do I share my JavaScript code?

Share your JavaScript playground project via a simple URL, or publish it to a live website with one click. Every project gets a unique playcode.io URL that anyone can access. Pro users can connect custom domains and deploy production websites directly from the playground.

Does the JavaScript playground work on mobile?

Yes, PlayCode works on any device. The web-based JavaScript playground is optimized for tablets and smartphones, with touch-friendly controls and mobile-responsive layout. You can also download native desktop apps for Mac, Windows, and Linux for the best performance.

How does the AI coding assistant work?

PlayCode's AI assistant understands your entire project and can write code, fix bugs, explain errors, and create complete features. Just describe what you want to build, and the AI generates working JavaScript code with proper npm imports and file structure. It's like pair programming with an expert developer.

Can I publish my project to a live website?

Yes! Click the Publish button and your JavaScript playground project becomes a live website instantly. No deployment configuration, no hosting provider, no server setup. PlayCode handles hosting, SSL certificates, and CDN automatically. You can connect custom domains to create professional websites.

Is my code stored in the cloud?

Your code is stored locally in your browser by default. When you create an account, projects sync to the cloud so you can access them from any device. All data is encrypted and private by default. You control sharing permissions for each project.

What our users value

Easy to use

Fast

Best for learners

Best JavaScript Playground with AI I have ever used.

I've tried many JavaScript playgrounds and sandboxes, but PlayCode is on another level. The AI actually writes working code, not just suggestions. The instant live preview, React and Vue support out of the box, and Tailwind CSS integration make it my go-to JavaScript playground for prototyping. No npm install, no setup, just describe what you want and see it built.

- Linda MacDonald

Ready to Build Something?

Open Playground

Try out PlayCode Coding Courses

Learn HTML, CSS, JavaScript and React easily through our interactive PlayCode Courses. Take a leap in your learning journey and upgrade your skills today.

Start learning

JavaScript Playground

AI Website Builder

Built for Everyone

For Beginners

For Professionals

For Teams

All JavaScript Frameworks Supported

Beyond JavaScript: Multi-Language Support

Free Developer Tools

New to JavaScript?

Get on Board

Online Playgrounds & Compilers

Features

Code seamlessly from any device

Frequently Asked Questions

What our users value

Ready to Build Something?

Try out PlayCode Coding Courses

Languages

Frameworks

Developer Tools

CSS & Styling

Tutorials