Implementing Google reCAPTCHA with React and Node.js
Google reCAPTCHA is a free service that protects your website from spam and abuse. It uses advanced risk analysis techniques to tell humans and bots apart. In this article, we will discuss how to implement Google reCAPTCHA with React and Node.js.
Step 1: Sign up for reCAPTCHA
The first step is to sign up for a reCAPTCHA API key. Go to the reCAPTCHA website and sign up for an account. Once you have signed up, you will receive a site key and a secret key.
Step 2: Set up the back-end with Node.js
Next, we need to set up the back-end with Node.js. Create a new Node.js project and install the necessary packages using npm:
npm install express body-parser axios
Then, create an endpoint for verifying the reCAPTCHA token:
app.post('/verify-recaptcha', (req, res) => {
const { token } = req.body;
const secretKey = 'YOUR_SECRET_KEY_HERE';
const url = 'https://www.google.com/recaptcha/api/siteverify';
axios.post(url, null, {
params: {
secret: secretKey,
response: token
}
})
.then(response => {
if (response.data.success) {
res.json({ success: true });
} else {
res.status(400).json({ success: false, message: 'reCAPTCHA verification failed' });
}
})
.catch(error => {
res.status(500).json({ success: false, message: 'An error occurred' });
});
});
Step 3: Set up the front-end with React
Now, let’s set up the front-end with React. First, install the reCAPTCHA package using npm:
npm install react-google-recaptcha
Then, use the reCAPTCHA component in your React application, passing the site key as a prop:
import React, { useState } from 'react';
import ReCAPTCHA from "react-google-recaptcha";
const App = () => {
const [token, setToken] = useState(null);
const handleRecaptchaChange = (value) => {
setToken(value);
}
const verifyRecaptcha = () => {
// send token to back-end for verification
}
return (
);
}
export default App;
Step 4: Test the implementation
Finally, test the implementation by submitting the reCAPTCHA token to the back-end for verification. If the token is valid, the back-end will return a success message, and you can proceed with the desired action on the front-end.
By following these steps, you can easily implement Google reCAPTCHA with React and Node.js to protect your website from spam and abuse.
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