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Code Playground

Name: Code Playground (Free)
Author: Glenn Guilloux

Write and run JavaScript in a sandboxed environment. Get AI-powered explanations of what your code does. No API key needed.

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Editor

// Write your JavaScript here
const greeting = "Hello, World!";
console.log(greeting);

// Try some array operations
const numbers = [1, 2, 3, 4, 5];
const doubled = numbers.map(n => n * 2);
console.log("Doubled:", doubled);

// Fibonacci
function fib(n) {
  if (n <= 1) return n;
  return fib(n - 1) + fib(n - 2);
}
console.log("Fib(10):", fib(10));

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Console Output

// Click ▶ Run to execute your code

AI Explanation