kaptcha
v1.0.4
Published
simple 6 digit captcha image middleware for express, modified from captcha middleware.
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kaptcha
simple 6 digit captcha image middleware for express, modified from captcha middleware
Installation
Canvas is required, please follow canvas instruction to install canvase dependencies. Canvas Wiki
Once canvas is installed successfully, run npm command to install kaptcha.
npm install kaptcha
Usage
As middleware (express-session middleware is required):
var kaptcha = require('kaptcha');
app.get('/kaptcha.png', kaptcha({
color: 'rgb(0, 0, 0)',
background: 'rgb(255, 255, 255)',
width: 100,
height: 30
}))
app.post('/authenticate', function(req, res) {
console.log(req.session.captcha == req.body.captcha);
})
Customize:
var kaptcha = require('kaptcha');
app.get('/captcha', function(req, res) {
var code = kaptcha.generateCode();
kaptcha.generateImage(req, res, { width: 100, height: 30, text: code });
})
Parameters
color
font color
background
background color
width
image width
height
image height
text
Optional captcha random code for generateImage(), and will be ignored in kaptcha middleware function.