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React: Inconsistent Rendering of Dynamic Form Fields with useState on State Updates

๐Ÿ‘€ Views: 0 ๐Ÿ’ฌ Answers: 1 ๐Ÿ“… Created: 2025-06-14
react useState form dynamic javascript

I'm following best practices but I keep running into I'm having a hard time understanding Quick question that's been bugging me - Quick question that's been bugging me - I'm working with an scenario with dynamically rendering form fields in a React application using `useState`......... I have a simple form where users can add multiple email addresses. The initial state is set correctly, but when I try to update the state after adding or removing email fields, the rendering behaves unexpectedly. After adding an email, the new field does not appear immediately unless I refresh the page. Hereโ€™s a snippet of how I'm managing the form state: ```javascript import React, { useState } from 'react'; const EmailForm = () => { const [emails, setEmails] = useState(['']); const handleAddEmail = () => { setEmails([...emails, '']); }; const handleEmailChange = (index, value) => { const newEmails = [...emails]; newEmails[index] = value; setEmails(newEmails); }; const handleRemoveEmail = (index) => { setEmails(emails.filter((_, i) => i !== index)); }; return ( <div> {emails.map((email, index) => ( <div key={index}> <input type="email" value={email} onChange={(e) => handleEmailChange(index, e.target.value)} /> <button type="button" onClick={() => handleRemoveEmail(index)}>Remove</button> </div> ))} <button type="button" onClick={handleAddEmail}>Add Email</button> </div> ); }; export default EmailForm; ``` I have tried using `React.StrictMode`, but it didnโ€™t seem to affect the behavior. Additionally, I noticed that sometimes the `emails` array in the state does not reflect the latest updates, which leads to an inconsistency in what is rendered. In the console, I see no errors, but the updated state doesn't seem to trigger a re-render as expected. Has anyone experienced similar issues or have insights on why my components arenโ€™t updating correctly? Is there something fundamental I'm missing with how state updates work in React? This is part of a larger web app I'm building. Any help would be greatly appreciated! The stack includes Javascript and several other technologies. Any pointers in the right direction? The project is a web app built with Javascript. Thanks in advance! I'm on CentOS using the latest version of Javascript. Any examples would be super helpful. Has anyone else encountered this?