Implements Google's reCAPTCHA in node.js. It can be used with pure node.js or in combination with express.js. Doesn't require additional libraries, just core http module.
- sign up for an API key in the google's page.
- create a new site to get the site key and public.
- install the package with:
$ npm install --save recaptcha-verifyUse the site key to display the widget in the page (inside a form). For a more info on how to display the widget, see the documentation.
<!doctype html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document title</title>
<script src='https://www.google.com/recaptcha/api.js'></script>
</head>
<body>
<form action="/nodeform">
<input type="text"/>
<input type="text"/>
<div class="g-recaptcha" data-sitekey="SITE_KEY"></div>
<input type="submit">
</form>
</body>
</html>In node we must use the secret key.
Options object have 2 keys:
- secret: the secret key of the recaptcha.
- verbose: if set to true, it show relevant information on each validation.Default: false.
- userResponse: is the key provided in each validation by the reCAPTCHA widget, see more info in the documentation.
- callback: have an error and a response params.
Callback returns an error when something is wrong. The response object is described in the documentation.
var Recaptcha = require('recaptcha-verify');
var recaptcha = new Recaptcha({
secret: 'SECRET_KEY',
verbose: true
});
app.get('/check', function(req, res){
// get the user response (from reCAPTCHA)
var userResponse = req.query['g-recaptcha-response'];
recaptcha.checkResponse(userResponse, function(error, response){
if(error){
// an internal error?
res.status(400).render('400', {
message: error.toString()
});
return;
}
if(response.success){
res.status(200).send('the user is a HUMAN :)');
// save session.. create user.. save form data.. render page, return json.. etc.
}else{
res.status(200).send('the user is a ROBOT :(');
// show warning, render page, return a json, etc.
}
});
});For more information, please check out https://github.com/AlejandroSilva or send me and email to pm5k.sk[at]gmail.com