How to Fix React useEffect Infinite Loops in 5 Minutes

How to Fix React useEffect Infinite Loops in 5 Minutes The dependency array got you stuck? Here's exactly why your effect keeps running and how to fix it for good. Why This Matters If you've worked with React hooks for more than five minutes, you've probably encountered the dreaded infinite loop. You add a useEffect , your component re-renders endlessly, your browser tab freezes, and you're left wondering what went wrong. The useEffect hook is powerful, but its dependency array is one of the most misunderstood features in React. A wrong dependency can trigger an infinite re-render cycle that crashes your app and frustrates your users. The good news? Once you understand the root cause, fixing it takes less than five minutes. This guide will show you exactly how to diagnose and solve every common infinite loop pattern. Understanding the Problem What Causes Infinite Loops? The useEffect hook runs when any value in its dependency array changes. React compares dependencies by reference for