A comprehensive demonstration of WebAssembly integration in modern web development, showcasing high-performance calculations and dynamic content management in the browser.
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This project demonstrates the power of WebAssembly (WASM) technology by creating a fully functional dynamic website that runs WebAssembly modules directly in the browser. The website features a responsive design, interactive navigation, and real-time performance comparisons between WebAssembly and JavaScript execution.
- WebAssembly Integration - Direct execution of WASM bytecode in the browser
- Performance Benchmarking - Real-time comparison between WASM and JavaScript execution speeds
- Dynamic Navigation - Single-page application with smooth page transitions
- Responsive Design - Mobile-friendly interface with modern CSS Grid and Flexbox
- Cross-Browser Compatibility - Works on all modern browsers supporting WebAssembly
- Hand-crafted WebAssembly bytecode for mathematical operations
- Graceful fallback to JavaScript when WASM is unavailable
- Performance monitoring and metrics display
- Modular JavaScript architecture with event-driven navigation
- CSS animations and transitions for enhanced user experience
├── index.html # Main HTML file with embedded CSS and JavaScript
├── README.md # This documentation file
└── assets/ # (Optional) Additional resources
- Modern web browser with WebAssembly support (Chrome 57+, Firefox 52+, Safari 11+, Edge 16+)
- Web server (for local development) or GitHub Pages for hosting
- Fork or clone this repository
- Go to repository Settings → Pages
- Select "Deploy from a branch" → main branch → / (root)
- Access your website at
https://yourusername.github.io/repository-name
- Clone the repository:
git clone https://github.com/yourusername/webassembly-demo.git
cd webassembly-demo- Start a local web server:
# Using Python 3
python -m http.server 8000
# Using Node.js
npx http-server
# Using PHP
php -S localhost:8000- Open
http://localhost:8000in your browser
Simply open index.html in your web browser (some features may be limited due to CORS restrictions)
- Use the Navigate dropdown menu in the top-right corner to switch between pages
- Pages include: Home, About, Services, Contact, and WebAssembly Demo
- Navigate to the "WebAssembly Demo" page
- Click the "Run WebAssembly Calculation" button
- View the results showing:
- Mathematical calculation results
- Performance comparison between WASM and JavaScript
- Execution time metrics
The demo automatically runs performance benchmarks comparing:
- WebAssembly execution time for 50,000 mathematical operations
- JavaScript execution time for the same operations
- Speed ratio showing performance difference
The project includes a hand-crafted WebAssembly module that performs integer addition:
// WebAssembly bytecode for addition function
var wasmCode = new Uint8Array([
0x00, 0x61, 0x73, 0x6d, // WASM magic number
0x01, 0x00, 0x00, 0x00, // Version 1
// ... function definition and exports
]);initWasm()- Initializes the WebAssembly modulerunWasmDemo()- Executes performance comparisonshowPage(pageId)- Handles navigation between pagestoggleDropdown()- Manages dropdown menu interactions
The code includes automatic fallback mechanisms:
- WebAssembly detection and graceful degradation
- JavaScript-only execution when WASM is unavailable
- Cross-browser event handling
- Create a new
<div>with classpageand unique ID in the HTML - Add navigation link in the dropdown menu
- Content will automatically inherit the styling
- Compile your C/C++/Rust code to WebAssembly
- Replace the
wasmCodearray with your compiled bytecode - Update the function calls to match your exported functions
All CSS is embedded in the <style> section of index.html:
- Modify color scheme by changing CSS custom properties
- Adjust animations by updating
@keyframesdefinitions - Responsive breakpoints are handled through CSS Grid auto-fit
| Browser | Version | WebAssembly Support |
|---|---|---|
| Chrome | 57+ | ✅ Full Support |
| Firefox | 52+ | ✅ Full Support |
| Safari | 11+ | ✅ Full Support |
| Edge | 16+ | ✅ Full Support |
Typical performance improvements observed:
- Simple calculations: 1.5-3x faster than JavaScript
- Complex mathematical operations: 2-10x faster than JavaScript
- Memory-intensive operations: 3-15x faster than JavaScript
WebAssembly not loading:
- Ensure you're accessing the page via HTTP/HTTPS (not file://)
- Check browser console for error messages
- Verify WebAssembly support in your browser
Navigation not working:
- Check browser console for JavaScript errors
- Ensure all function names match between HTML and JavaScript
- Verify dropdown menu is properly initialized
Performance metrics showing unexpected results:
- Performance varies by device and browser
- Results may be affected by browser DevTools being open
- Try refreshing the page and running the test again
- Fork the repository
- Create a feature branch (
git checkout -b feature/new-feature) - Commit your changes (
git commit -am 'Add new feature') - Push to the branch (
git push origin feature/new-feature) - Create a Pull Request
- Test across multiple browsers and devices
- Verify WebAssembly functionality in both development and production
- Check responsive design on various screen sizes
This project is licensed under the MIT License - see the LICENSE file for details.
- WebAssembly Community for excellent documentation
- MDN Web Docs for comprehensive browser compatibility information
- Modern web development practices and standards
Note: This is a demonstration project. For production applications, consider using established WebAssembly toolchains like Emscripten, wasm-pack (Rust), or AssemblyScript for more complex functionality.