How can I handle errors in React forms effectively?

How can I handle errors in React forms effectively?

You can handle errors in React forms by using state to track input values and error messages. Would you like a code example?

Yes, please provide a code example for handling form validation.

Here's a simple example:

import React, { useState } from 'react';

const MyForm = () => {
  const [input, setInput] = useState('');
  const [error, setError] = useState('');

  const handleSubmit = (e) => {
    e.preventDefault();
    if (!input) {
      setError('Input is required!');
    } else {
      setError('');
      // Process the form submission
    }
  };

  return (
    <form onSubmit={handleSubmit}>
      <input 
        type="text" 
        value={input} 
        onChange={(e) => setInput(e.target.value)} 
      />
      {error && <span style={{color: 'red'}}>{error}</span>}
      <button type="submit">Submit</button>
    </form>
  );
};

This code checks if the input is empty and sets an error message accordingly.

What are some common validation techniques I can use?

Common validation techniques include required fields, email format checks, and custom validation functions. Would you like to know more about any specific technique?