Episode 81 of The Web Development Podcast tackles a subtle but performance-crippling bug: memory leaks from JavaScript closures. Lucas and Luna break down a real case from a popular React dashboard app that steadily consumed 200 MB per hour just from event handlers referencing stale variables. They explain how closure scope chains keep references alive, why modern single-page apps are especially vulnerable, and three practical fixes: nullifying references after use, using WeakMap for listener tracking, and profiling with Chrome DevTools' memory tab. If your app feels sluggish after a few hours of use, this episode will show you what to look for.

#JavaScript #Closures #MemoryLeaks #WebPerformance #React #Frontend #Backend #ChromeDevTools #WeakMap #GarbageCollection #EventHandlers #SinglePageApp #DevTools #PerformanceOptimization #WebDev #Technology #FexingoBusiness #BusinessPodcast

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