Run Code • DotNetSchool

Write, Run & Share Code

Try JavaScript locally in your browser. For C#, Java, and Python, head to the full compiler on DotNetSchool.

Run on DotNetSchool Open Editor

Fast, familiar, lightweight

Modern UI, accessible, keyboard-friendly, and mobile-ready.

⚡
Instant JS Runs

Run JavaScript locally in a sandboxed iframe—no server needed.

🧩
Language Presets

Swap among C#, Java, Python, and JavaScript with ready “Hello, World!” snippets.

🔗
Direct to Compiler

Jump to the full DotNetSchool compiler for real execution and sharing.

Benefits

Speed up learning and prototyping with a simple, powerful playground.

🚀
Faster Iteration

Test ideas quickly without context switching—run JS locally, jump to full compiler when ready.

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Learn by Doing

Pre-baked snippets help you focus on concepts, not boilerplate.

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Safe & Local

Local JS execution is sandboxed for safety. No uploads needed for quick tests.

Best For

Who gets the most from this playground?

🎓
Students

Practice syntax, try small experiments, and build confidence before using the full compiler.

👨‍💻
Developers

Quickly validate snippets, reproduce bugs, and share minimal examples.

🎯
Interview Prep

Practice patterns and coding questions with instant feedback and clean formatting.

FAQs

Quick answers before you start.

Can I run C#, Java, or Python here?
Local runs support JavaScript only. Click Run on DotNetSchool to open the full compiler for C#, Java, and Python.
Is code uploaded anywhere?
Local runs happen in a sandboxed iframe inside your browser—no uploads. Using the full compiler follows its own policies.
How do I share code?
Use the Download .txt button here, or switch to the full compiler to generate shareable links.
Keyboard shortcuts?
Ctrl/Cmd + Enter runs JavaScript locally. Copy and clear are also available via buttons.
Will syntax highlighting work for all languages?
Yes—Prism is loaded for JavaScript, C#, Java, and Python. Local execution still applies only to JavaScript.

Ready to go deeper?

Open the full experience with your chosen language.

Open Full Compiler