Why useEffect is running twice?
The useEffect hook in React is designed to execute side effects in function components. However, if not used correctly, it might run multiple times, leading to unexpected behavior in your application.
import { useEffect } from "react"
function App() {
useEffect(() => {
console.log("Calling GFG by use effect")
}, [])
return (
<>
<h1 className="gfg">Geeks for Geeks </h1>
</>
)
}
export default App
Output:
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
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