# JavaScript Playground — FMAC

Write JavaScript with basic syntax highlighting, line numbers, and a resizable console.

- Open: https://fmac.ng/playground/
- Run: code executes automatically on load and after a short pause while typing.
- Resize: drag the middle divider, or focus it and use the arrow keys.
- Format: select text, choose JavaScript or JSON, then select Format selection.
- Reset: restore the starter example with the reset button.
- JavaScript runs in a web worker without DOM access. Each run stops after five seconds.