0.1.5 • Published 9 years ago
n-captcha v0.1.5
n-captcha
nodejs captcha
How to install
brew install pkg-config if you don't have
brew install cairo if you don't have
npm install n-captcha --save
Config
{
//verify code length
textLen: 4,
//verify code color
color: '#2897CE',
//verify code bg-color
background: '#DFDFDF',
lineWidth: 3,
fontSize: 3,
imageW: 200,
imageH: 80
//identify level
level: 3,
//bezier Curve color
bcColor: '#97BFB2',
beforReqEndHooks: function(){}
}How to use
if you use express or koa you can use it as middleware
####You server code
var app = express()();
var ncaptcha = require('n-captcha');
app.use(function(req, res, next) {
if (req.url === '/captcha') {
var options = {
beforReqEndHooks: function(verifyCode) {
if (req.session) req.session.ncaptcha = verifyCode;
//do something you need
}
}
var verifyCode = ncaptcha(options, res);
} else {
next();
}
})
// route
app.post('/p/doLogin', function() {
var ncaptcha = req.body.ncaptcha;
if (ncaptcha !== req.session.ncaptcha) {
res.json({code: 1000, msg: 'make sure that captcha is right'})
}
})####You client code
<html>
<body>
<img src="/captcha">
</body>
</html>license
MIT