How to Create an OTP code verification form step by step in React JS

Hello Friends, In this tutorial we will learn how to create an OTP code verification form in React JS. Here's a step-by-step guide on how to create an OTP code verification form in React JS:

1. Create a new React component file, let's name it "OTPVerificationForm.js".

2. Import React and useState from the React library. useState will be used to manage the state of the OTP input field.

import React, { useState } from 'react';

3. Define the OTPVerificationForm component. In this component, we will use the useState hook to create a state variable for the OTP input field.

const OTPVerificationForm = () => {
  const [otp, setOTP] = useState('');
  
  return (
    // OTP verification form UI
  );
}

4. Create a form element in the return statement of the OTPVerificationForm component. Inside the form, create a label and an input element for the OTP code. Bind the value of the input field to the "otp" state variable, and add an onChange handler to update the state when the user types in the input field.

const OTPVerificationForm = () => {
  const [otp, setOTP] = useState('');
  
  return (
    <form>
      <label htmlFor="otp">OTP Code:</label>
      <input
        type="text"
        id="otp"
        value={otp}
        onChange={(event) => setOTP(event.target.value)}
      />
      <button type="submit">Verify</button>
    </form>
  );
}

5. Add a submit button to the form. This button will be used to trigger the OTP code verification process.

const OTPVerificationForm = () => {
  const [otp, setOTP] = useState('');
  
  const handleVerification = (event) => {
    event.preventDefault();
    // Verify OTP code
  }
  
  return (
    <form onSubmit={handleVerification}>
      <label htmlFor="otp">OTP Code:</label>
      <input
        type="text"
        id="otp"
        value={otp}
        onChange={(event) => setOTP(event.target.value)}
      />
      <button type="submit">Verify</button>
    </form>
  );
}

6. Add a handler function for the form submission. This function will be called when the user clicks the submit button. In this function, you can call an API endpoint to verify the OTP code, or perform any other necessary validation.

const OTPVerificationForm = () => {
  const [otp, setOTP] = useState('');
  const [error, setError] = useState(null);
  
  const handleVerification = (event) => {
    event.preventDefault();
    // Verify OTP code
    if (otp === '1234') {
      // OTP code is correct, do something
    } else {
      setError('Invalid OTP code');
    }
  }
  
  return (
    <form onSubmit={handleVerification}>
      <label htmlFor="otp">OTP Code:</label>
      <input
        type="text"
        id="otp"
        value={otp}
        onChange={(event) => setOTP(event.target.value)}
      />
      <button type="submit">Verify</button>
      {error && <p>{error}</p>}
    </form>
  );
}

7. Finally, add a state variable to handle any errors that may occur during the OTP code verification process. In the handleVerification function, if the OTP code is incorrect, set the error state variable to a message that will be displayed to the user.

const OTPVerificationForm = () => {
  const [otp, setOTP] = useState('');
  const [error, setError] = useState(null);
  
  const handleVerification = (event) =>