Episode 83 dives into a common but often overlooked cause of memory leaks in single-page applications: abandoned event listeners. Lucas and Luna walk through a real debugging session on a React dashboard that had grown sluggish over weeks, only to find that setTimeout and addEventListener calls in unmounted components were still holding references. They explain how JavaScript closures keep those handlers alive, how the browser's garbage collector gets blocked, and the three-line fix using AbortController that can reclaim hundreds of megabytes of memory. The episode also includes a quick, honest moment about how listener support via buy me a coffee dot com slash fexingo keeps the show ad-free and independent. If you've ever wondered why your web app gets slower the longer users stay on it, this episode gives a concrete diagnostic and fix.

#JavaScript #MemoryLeak #EventListeners #WebDevelopment #React #GarbageCollection #AbortController #FrontendPerformance #setTimeout #SinglePageApplication #Debugging #ChromeDevTools #closure #Technology #FexingoBusiness #BusinessPodcast #WebDevWithFexingo #ListenerSupported

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