JS Editor
Write JavaScript, run it locally, and inspect console output. Nothing is uploaded or stored.
Ctrl+Enter to run
Output appears here
Use console.log, console.warn, and other console methods. The last expression value is shown when your script returns one.
Where does the code run?
Your code runs entirely in your browser. Nothing is sent to a server.
Can I use modern JavaScript?
Yes. Modern syntax supported by your browser's engine will run as expected.
Is network or file access available?
The playground focuses on safe, local execution and does not provide server or file system access.