👀 Views: 1494 💬 Answers: 1 📅 Created: 2025-06-27

reactjs hook forwardref javascript

I'm confused about I've encountered a strange issue with I'm encountering unexpected behavior while trying to use `useRef` in combination with `forwardRef` in React 18 to manipulate the state of a parent component from a child component. My goal is to trigger a state update in the parent when a button in the child component is clicked, but it seems that the state is not updating as expected. Here's a simplified version of my implementation: ```javascript import React, { useState, useRef, forwardRef, useImperativeHandle } from 'react'; const ChildComponent = forwardRef((props, ref) => { const localRef = useRef(); useImperativeHandle(ref, () => ({ updateParentState: () => { props.onButtonClick('New Value'); }, })); return <button onClick={() => localRef.current.updateParentState()}>Update Parent</button>; }); const ParentComponent = () => { const [value, setValue] = useState('Initial Value'); const childRef = useRef(); const handleButtonClick = (newValue) => { setValue(newValue); }; return ( <div> <h1>{value}</h1> <ChildComponent ref={childRef} onButtonClick={handleButtonClick} /> </div> ); }; export default ParentComponent; ``` In this code, I expect that when I click the button in the `ChildComponent`, it should call the `handleButtonClick` function in `ParentComponent`, updating the displayed value. However, I'm seeing a strange behavior where the `h1` does not update, and the console shows no errors. I've tried logging the `value` state in the `ParentComponent` to see if it is being updated, but it appears that the state remains unchanged. I've also double-checked that the function `handleButtonClick` is being called by adding a console log inside it. The log confirms that the function is executed, but the UI does not reflect the new state. Is there something I'm missing in this approach, or is there a known issue with using `useRef` and `forwardRef` together that causes this behavior in React 18? Any help would be greatly appreciated! The project is a mobile app built with Javascript. I've been using Javascript for about a year now. Cheers for any assistance!