JavaScript Playground

Run JavaScript and TypeScript online with instant console output.

Run JavaScript and TypeScript instantly in your browser. Code stays on your device. This is browser JS, not full Node.js (no fs, require, or npm).

Editor

Examples:

Console

Click Run to see console output here.

Free Online JavaScript & TypeScript Playground

Write JavaScript or TypeScript and run it instantly in your browser. Dokall transpiles TypeScript with esbuild and captures console.log output with execution timing.

Perfect for learning, testing snippets, and debugging algorithms. All execution happens locally in your browser — your code is never sent to a server.