captcha

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'));
...

Color Options

You can setup colors with an object, instead of just URL, like this (CSS-notation of color):

...
app.use(captcha({ url: '/captcha.jpg', color:'#0064cd', background: 'rgb(20,30,2}));
...

All color options are optional.

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!'));
...

PS: thanks for more detailed description: http://stackoverflow.com/questions/9487844/nodejs-how-to-use-node-captcha-module