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Online JavaScript Editor & Compiler – Run JS Code Instantly

Use our free online JavaScript editor to write, run, and test JavaScript code in real time. No setup or installation required – perfect for developers, learners, and quick testing.

🚀 What is a JavaScript Editor & Compiler?

A JavaScript editor and compiler lets you write and execute JavaScript code directly in your browser. This tool is ideal for quick prototyping, learning, debugging, and sharing code snippets.

✨ Features

Real-time JS code execution and output
Works fully in-browser – no downloads
Supports modern JavaScript (ES6+)
Live error logging and console output
Perfect for testing algorithms and DOM manipulation
Clean, responsive, and fast interface

🧪 Sample Output

Example console output:

> console.log('Hello World');
Hello World

❓ Frequently Asked Questions

Do I need to install anything to use this?

Nope! This JavaScript editor runs entirely in your browser. No installation or setup required.

Does it support ES6 and modern JavaScript?

Yes, it supports all modern JavaScript syntax including ES6+ features like arrow functions, async/await, etc.

Can I use it on mobile?

Yes! This tool is mobile-friendly and responsive for smaller screens.