useEffectEvent in React 19.2 Explained with Example | New React Hook in Action

useEffectEvent in React 19.2


  1. What is useEffectEvent
  2. Problem Statement (Why we need useEffectEvent)
  3. Solution with useEffectEvent
  4. Interview Question
  5. Notes and code


Code used in this example :-


import { useEffectEvent } from "react";
import { useEffect, useState } from "react";

function App() {
const [count, setCount] = useState(0)

const countControl= useEffectEvent(()=>{
setCount(count + 1)
})
useEffect(() => {
// const internal =setInterval(() => {
// countControl()
// }, 1000)
// console.log(internal);

return ()=>clearInterval(internal)
}, [])
return (
<div>
<h1>{count}</h1>
</div>
);
}

export default App;