Maximum update depth exceeded React

Why This Happens

In React, useeffect with wrong dependencies causes infinite updates. This is one of the most common React errors developers encounter. Understanding the root cause helps you fix it quickly and prevent it from recurring.

The Problem

useEffect(() => {
  setData(fetch());
}); // No deps = runs every render!

The Fix

useEffect(() => {
  fetchData().then(setData);
}, []); // Empty deps = run once

Step-by-Step Fix

1. 1

   Identify the error

   Look at the error message: Maximum update depth exceeded. This tells you exactly what went wrong.

2. 2

   Find the cause

   Check the stack trace to find which line of your React code triggered this error.

3. 3

   Apply the fix

   Use the corrected code pattern shown above. Test to confirm the error is resolved.