Captcha

Simple captcha.

Installation

via npm:

$ npm install captcha

Application init:

...
var captcha = require('captcha');
...
app.configure(function(){
...
	app.use(app.router);
	app.use(captcha('/captcha.jpg')); // url for captcha jpeg
	app.use(express.static(__dirname + '/public'));
...

Render captcha:

<img src="/captcha.jpg" />

Check captcha:

app.post('/user/create', function(req, res, next){
	if(req.body.captcha != req.session.captcha) // text from captcha stored into session
		return next(new Error('Captcha stop!'));
...