JavaScript Performance Trap | Nested Loop vs Optimized Code 🚀

Description

This JavaScript code works fine with small data. But with 10,000 users and 10,000 orders, performance breaks. Learn: ✔ Why nested loops are slow ✔ How Set + filter improves speed ✔ Clean, production-ready code #JavaScript #TypeScript #PerformanceOptimization #CleanCode #WebDevelopment #Angular #CodingShorts #Programming