👀 Views: 0 💬 Answers: 1 📅 Created: 2025-07-16

reactjs form useState javascript

I've been working on this all day and I've spent hours debugging this and I'm working on a project and hit a roadblock. I'm relatively new to this, so bear with me. I'm working with a frustrating scenario with form submissions in a React 18 application. I have a modal component that contains a form, along with several nested components that also handle input fields. When I submit the form, I need to prevent the default behavior to stop the page from reloading, but it seems like the event is not being captured correctly. I have the following setup: ```javascript import React, { useState } from 'react'; function Modal() { const [inputValue, setInputValue] = useState(''); const handleSubmit = (event) => { event.preventDefault(); // This should prevent the default behavior console.log('Form submitted:', inputValue); }; return ( <div> <form onSubmit={handleSubmit}> <NestedInput setInputValue={setInputValue} /> <button type="submit">Submit</button> </form> </div> ); } function NestedInput({ setInputValue }) { return ( <input type="text" onChange={(e) => setInputValue(e.target.value)} placeholder="Type something..." /> ); } export default Modal; ``` When I click the submit button, I expect the form submission to be logged in the console, but instead, I get a blank page, and the console shows the following behavior: `Uncaught (in promise) behavior: Form submitted: undefined`. I verified that `handleSubmit` is being called, but there's something going wrong with the input handling. I tried moving the `handleSubmit` function inside the `NestedInput` and passing the event up, but that didn't work either. I also checked if there are any issues with the way the nested component is handling state updates, and I’m using React 18's built-in hooks. Can anyone point me in the right direction? What am I missing here? I’ve also tried using `useEffect` hooks to log the input value changes, which confirm the `setInputValue` is being called correctly, but I still run into the same scenario. How can I ensure that my input value is correctly captured during form submission? I'm working on a web app that needs to handle this. My development environment is Windows. Any pointers in the right direction? I'm working with Javascript in a Docker container on Debian.