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December 9, 2014 17:16
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Node.js recaptcha example 1 https://jaxbot.me/articles/new-nocaptcha-recaptcha-with-node-js-express-12-9-2014
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| <!doctype html> | |
| <html> | |
| <head> | |
| <script src='https://www.google.com/recaptcha/api.js'></script> | |
| </head> | |
| <body> | |
| <h1>Register for test site</h1> | |
| <form action="register" method="post"> | |
| <input type="text" name="username" placeholder="Username"><br> | |
| <input type="text" name="email" placeholder="Email"><br> | |
| <input type="password" name="password" placeholder="Password"><br> | |
| <div class="g-recaptcha" data-sitekey="sitekey here"></div> | |
| <input type="submit" value="Register"> | |
| </form> | |
| </body> | |
| </html> |
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| var express = require('express'); | |
| var bodyParser = require('body-parser'); | |
| var engines = require('consolidate'); | |
| var app = express(); | |
| var https = require('https'); | |
| app.use(bodyParser.urlencoded({ extended: false })); | |
| app.engine('html', engines.hogan); | |
| app.get('/', function(req, res) { | |
| res.render('form.html'); | |
| }); | |
| app.post('/register', function(req, res) { | |
| verifyRecaptcha(req.body["g-recaptcha-response"], function(success) { | |
| if (success) { | |
| res.end("Success!"); | |
| // TODO: do registration using params in req.body | |
| } else { | |
| res.end("Captcha failed, sorry."); | |
| // TODO: take them back to the previous page | |
| // and for the love of everyone, restore their inputs | |
| } | |
| }); | |
| }); | |
| app.listen(3000); | |
| var SECRET = "secret from webpage here"; | |
| // Helper function to make API call to recatpcha and check response | |
| function verifyRecaptcha(key, callback) { | |
| https.get("https://www.google.com/recaptcha/api/siteverify?secret=" + SECRET + "&response=" + key, function(res) { | |
| var data = ""; | |
| res.on('data', function (chunk) { | |
| data += chunk.toString(); | |
| }); | |
| res.on('end', function() { | |
| try { | |
| var parsedData = JSON.parse(data); | |
| callback(parsedData.success); | |
| } catch (e) { | |
| callback(false); | |
| } | |
| }); | |
| }); | |
| } |
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| { | |
| "name": "nodejs-recaptcha", | |
| "version": "1.0.0", | |
| "description": "", | |
| "main": "index.js", | |
| "scripts": { | |
| "test": "echo \"Error: no test specified\" && exit 1" | |
| }, | |
| "author": "", | |
| "license": "ISC", | |
| "dependencies": { | |
| "consolidate": "^0.10.0", | |
| "express": "^4.10.4", | |
| "hogan.js": "^3.0.2" | |
| } | |
| } |
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Here you can find the complete demo. Go through the link:
https://jsonworld.com/demo/45/nodejs/Implementing-google-reCAPTHCA-in--node.js-application