Learn GO-WASM with Real Code Examples
Updated Nov 25, 2025
Performance Notes
WASM execution is faster for CPU-heavy Go code than JS equivalent
DOM manipulation still slower due to JS bridge overhead
Lazy-load modules to reduce initial load
Minimize global `syscall/js` calls for performance
Tree-shake unnecessary Go packages for smaller WASM binary
Security Notes
Code runs in browser sandbox; follow standard browser security
Validate all inputs and sanitize DOM updates
Avoid exposing sensitive keys in client WASM
Use HTTPS for API calls
Beware of Go memory usage in WASM for large datasets
Monitoring Analytics
Browser console logs
Performance profiling using DevTools
Goroutine monitoring for long-running tasks
Event logging via JS interop
Telemetry integration with backend
Code Quality
Keep Go code modular and reusable
Follow Go concurrency best practices
Minimize JS interop calls for performance
Unit test Go logic extensively
Monitor WASM binary size and runtime efficiency