NullScript

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NullScript Playground ​

Try NullScript code live in your browser! Write NullScript code in the editor below and see it transpiled to JavaScript in real-time.

Example Snippets ​

Try these examples in the playground above:

Basic Function ​

javascript
run add(a, b) {
  return a + b;
}

fixed result = add(5, 3);
speak.say(`Result: ${result}`);

Control Flow ​

javascript
run checkNumber(num) {
  whatever (num > 0) {
    speak.say("Positive number");
  } otherwise whatever (num < 0) {
    speak.say("Negative number");
  } otherwise {
    speak.say("Zero");
  }
}

checkNumber(42);

Classes ​

javascript
model Calculator {
  __init__() {
    self.result = 0;
  }

  run add(value) {
    self.result += value;
    return self;
  }

  run getResult() {
    return self.result;
  }
}

fixed calc = fresh Calculator();
calc.add(10).add(5);
speak.say(`Total: ${calc.getResult()}`);

Error Handling ​

javascript
run safeDivide(a, b) {
  test {
    whatever (b === 0) {
      trigger fresh fail("Division by zero!");
    }
    return a / b;
  } grab (error) {
    speak.scream(`Error: ${error.message}`);
    return null;
  }
}

fixed result = safeDivide(10, 2);
speak.say(`Result: ${result}`);

Arrays and Loops ​

javascript
fixed fruits = ["apple", "banana", "cherry"];

since (fixed fruit part fruits) {
  speak.say(`I love ${fruit}!`);
}

fixed numbers = [1, 2, 3, 4, 5];
fixed doubled = numbers.map(n => n * 2);
speak.say(`Doubled: ${doubled}`);

Features ​

  • 🔄 Real-time Transpilation: See JavaScript output as you type
  • ▶️ Code Execution: Run your code directly in the browser
  • 📋 Copy Support: Copy transpiled JavaScript with one click
  • 🎨 Syntax Highlighting: Clear visual distinction between code and output
  • 📱 Mobile Friendly: Works on desktop and mobile devices
  • 🚀 No Setup Required: Start coding immediately
  • 🎛️ Keyword Mapping: Uses client-side transpilation for instant results

Transpilation Method

This playground uses client-side keyword mapping for instant transpilation. For production use with advanced features, use the NullScript CLI with the nsc command.

How to Use ​

  1. Write Code: Enter NullScript code in the left textarea
  2. Auto-Transpile: Code is automatically transpiled as you type
  3. Manual Transpile: Click "🔄 Transpile" to transpile manually
  4. Run Code: Click "▶️ Run Code" to execute the JavaScript
  5. View Output: See console output in the bottom panel
  6. Copy JavaScript: Use "📋 Copy JS" to copy the transpiled code

Tips ​

  • Start with simple examples and gradually try more complex code
  • Use the example snippets as starting points
  • Check the console output for errors and results
  • Experiment with different NullScript features
  • Copy the JavaScript output to use in your projects

Try the examples above or write your own NullScript code to see the magic happen! 🎭✨

Learn More ​

Ready to dive deeper into NullScript? Explore these resources: