Developer
Code Sandbox
Prototype in HTML, CSS, JS and React — runs live in a secure, isolated sandbox.
Isolated sandbox — no access to your account or data
Editor
Preview
Console
console output appears here…
Note: The React mode runs React/JSX (the same component model Next.js uses) via in-browser Babel. Full Next.js server features (SSR, API routes, file routing) require a build server and aren't executed here.
Frequently asked questions
Quick answers about this page in Lacspace One.
What is the Code Sandbox?
An isolated in-browser environment to prototype HTML, CSS, JS and React instantly, with no local setup.
Is my sandbox code private?
Your sandbox runs securely in your browser session; nothing is shared unless you choose to.