Mastering React: When to Use useEffect for Side Effects

One mistake I kept making while learning React was overusing useEffect. Any time I needed to update something based on state, my first instinct was: Let’s just add an effect for this. It worked at first… until my components started behaving in weird ways: • state updating twice • unexpected re-renders • and once, an infinite loop that took me way too long to debug That’s when I realised something important: useEffect is not for managing normal component logic — it’s for side effects. Now, before writing an effect, I ask myself: Am I syncing with something outside React, or am I just calculating data? If it’s just data, I compute it directly or use useMemo if it’s expensive. This one small change made my React code: simpler, easier to read, and way less buggy. Still learning, but moments like these really changed how I think about React. #reactjs #javascript #frontend #webdevelopment #reacthooks

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