What causes the input field to lose focus in React after typing a character?

Question

What causes the input field to lose focus in React after typing a character?

Currently utilizing React Mui for components and encountering no errors in either the Chrome inspector or terminal. How can this be resolved?

No error notifications are being displayed by eslint or Chrome Inspector.

The form submission functions correctly, as does the input field itself when placed within the render's return statement or imported as a separate component. However, it fails to work as intended in the current coding configuration outlined below.

What could be causing this issue?

Below is the code snippet:

import React, { useState } from "react";
    import {
      Box,
      Container,
      Stack,
      TextField,
      Typography,
      Button,
      Divider,
    } from "@mui/material";
    import { styled } from "@mui/material/styles";
    import { Link, useNavigate } from "react-router-dom";

const Register = () => {...}

javascript reactjs material-ui

Answer 1

Answer №1

Consider updating your handleChange method with the following changes:

const handleChange = (e) => {
    const { id, value } = e.target;
    setValues(() => (prevState => {
      return {
        ...prevState,
        [id]: value,
      }
    }));
    setValid(true);
  };

Answer 2

Consider updating your handleChange method with the following changes:

const handleChange = (e) => {
    const { id, value } = e.target;
    setValues(() => (prevState => {
      return {
        ...prevState,
        [id]: value,
      }
    }));
    setValid(true);
  };

Answer 3

Answer №2

This issue is occurring because components are being created within the Register component. This approach not only impacts performance but also makes the code susceptible to issues, similar to what you have encountered.

Whenever the state of the Register component changes, it triggers a re-render of itself, leading to the recreation of Curve and ProfileBox along with their child elements (input fields). Consequently, this reset the states of these components and their children, including losing focus.

To resolve this problem, it is advisable to externalize Curve and ProfileBox outside the Register component.

const Curve = styled('div')(({ theme }) => ({
  ... // the same
}));

const ProfileBox = styled(Box)(({ theme }) => ({
 ... // the same
}));
 
const Register = () => {

Answer 4

This issue is occurring because components are being created within the Register component. This approach not only impacts performance but also makes the code susceptible to issues, similar to what you have encountered.

Whenever the state of the Register component changes, it triggers a re-render of itself, leading to the recreation of Curve and ProfileBox along with their child elements (input fields). Consequently, this reset the states of these components and their children, including losing focus.

To resolve this problem, it is advisable to externalize Curve and ProfileBox outside the Register component.

const Curve = styled('div')(({ theme }) => ({
  ... // the same
}));

const ProfileBox = styled(Box)(({ theme }) => ({
 ... // the same
}));
 
const Register = () => {

What causes the input field to lose focus in React after typing a character?

Answer №1

Answer №2

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