Some other reasons are as follows
- Parent Component Re-renders: If the parent component of App re-renders, it will cause App to re-render as well, triggering the useEffect hook again.
- Global State Changes: If the useEffect hook depends on global state managed by a state management library like Redux or Context API, changes to that global state may trigger re-renders and consequently re-run the useEffect hook.
- Changes to Context Values: If App consumes context values provided by a Context Provider, changes to those context values may cause App to re-render and the useEffect hook to be called again.
How to Fix React useEffect running twice in React 18 ?
In React applications, the useEffect hook is commonly used for handling side effects, such as data fetching, subscriptions, or manually changing the DOM. However, encountering the issue of useEffect running twice can lead to unexpected behavior and impact the performance of your application. In this article, we’ll explore various approaches to resolve this error and provide examples for each approach.
Table of Content
- Why useEffect is running twice?
- Approaches for Resolving the Error
- Steps to Solve useEffect Running Twice
- Some other reasons are as follows
- More possible approached to prevent useEffect running twice