Folk REPL

An interactive JavaScript console that executes code and displays results using a visual object inspector. Type JavaScript expressions and press Enter to evaluate them. Use Shift+Enter to add new lines without executing.

Example expressions to try

• Math.PI - Simple number
• [1, 2, 3, 4, 5] - Array
• { name: 'Alice', age: 30, hobbies: ['reading', 'coding'] } - Object
• document.querySelector('h1') - DOM element
• new Date() - Date object
• fetch - Function object
• navigator.userAgent - String
• window.location - Complex object
• Array.from({length: 5}, (_, i) => i * i) - Generated array
• document.querySelectorAll('*') - NodeList