How to GENERATE Dynamic OTP In Jvascript & React JS

One-time password (OTP) is a security feature that can be used to verify the identity of a user during a transaction or when logging into a system. In this article, we will discuss how to generate dynamic OTP in JavaScript and React JS.

Step 1: Setting up the environment

First, make sure you have Node.js installed on your computer. You can download it from the official website and follow the installation instructions.

After installing Node.js, you can create a new React application using create-react-app. Open a terminal and run the following command:

npx create-react-app dynamic-otp-generator

This will create a new React application with the name “dynamic-otp-generator”. Navigate to the project directory by running the following command:

cd dynamic-otp-generator

Step 2: Generating dynamic OTP

Now that we have our React application set up, we can start writing the code to generate dynamic OTP. Create a new file called “OTPGenerator.js” in the src folder of your project and add the following code:

“`javascript
import React, { useState } from ‘react’;

const OTPGenerator = () => {
const [otp, setOTP] = useState(”);

const generateOTP = () => {
const digits = ‘0123456789’;
let OTP = ”;
for (let i = 0; i < 6; i++) {
OTP += digits[Math.floor(Math.random() * 10)];
}
setOTP(OTP);
}

return (

);
}

export default OTPGenerator;
“`

Step 3: Using the OTP generator component

Now, you can use the OTPGenerator component in your main App.js file to generate dynamic OTP. Add the following code to the App.js file:

“`javascript
import React from ‘react’;
import OTPGenerator from ‘./OTPGenerator’;

function App() {
return (

);
}

export default App;
“`

Step 4: Running the application

Now that you have everything set up, you can run your React application by running the following command in your terminal:

npm start

This will start the development server and open your React application in a new browser window. You can now click the “Generate OTP” button to generate a dynamic OTP and display it on the screen.

Congratulations! You have successfully learned how to generate dynamic OTP in JavaScript and React JS. You can now use this feature to enhance the security of your applications and improve the user authentication process.