How to Maintain Consistent Input Focus Across Modal and Parent Components in React?
I'm trying to debug I've been researching this but I've looked through the documentation and I'm still confused about I am facing an issue with maintaining keyboard focus when switching between a modal and its parent component in a React application... I am using React version 17.0.2 and React Modal version 3.14.3. The modal is supposed to open with an input field focused, but sometimes, when I close the modal, the focus doesn't return to the previously focused element in the parent component. This inconsistency is quite frustrating, especially for accessibility purposes. Here's a simplified version of my code: ```jsx import React, { useState, useRef, useEffect } from 'react'; import Modal from 'react-modal'; const App = () => { const [isModalOpen, setModalOpen] = useState(false); const [inputValue, setInputValue] = useState(''); const inputRef = useRef(null); const parentInputRef = useRef(null); const openModal = () => { setModalOpen(true); }; const closeModal = () => { setModalOpen(false); parentInputRef.current.focus(); }; useEffect(() => { if (isModalOpen) { inputRef.current.focus(); } }, [isModalOpen]); return ( <div> <input ref={parentInputRef} type="text" placeholder="Type here..." /> <button onClick={openModal}>Open Modal</button> <Modal isOpen={isModalOpen} onRequestClose={closeModal}> <h2>My Modal</h2> <input ref={inputRef} value={inputValue} onChange={(e) => setInputValue(e.target.value)} placeholder="Type in modal..." /> <button onClick={closeModal}>Close</button> </Modal> </div> ); }; export default App; ``` In this implementation, I am using `useRef` to track the input fields. The modal opens correctly with the input focused, but when I close the modal, the focus does not always return to the parent input. Sometimes, I get the warning in the console: `Warning: React has detected a change in the order of Hooks called by App.` I suspect this may be related to the component's rendering during state updates. Does anyone have suggestions on how to ensure that focus behavior is consistent across the modal and the parent component? I've tried using `setTimeout` to delay focusing the parent input, but that feels like a hack. I would appreciate any best practices or patterns to handle this scenario better. For context: I'm using Javascript on macOS. What am I doing wrong? I'm on Linux using the latest version of Javascript. I'm on Ubuntu 22.04 using the latest version of Javascript. Any ideas what could be causing this? I'm working on a web app that needs to handle this. Is there a better approach?