验证码 - 下载

npm i captcha-jessica -S

验证码 - 使用

const captcha = require('captcha-jessica')
let temp = captcha.create()
console.log(temp) // {text:'D3DS', data: '<svg></svg>'}

验证码 - HTTP模块

const http = require('http')
const captcha = require('captcha-jessica')

http.createServer((req, res) => {
    res.setHeader('content-type', 'text/html;charset=utf-8')
    let temp = captcha.create()
    // console.log(temp) // {text:'D3DS', data: '<svg></svg>'}
    res.end(temp.data)
}).listen(3000, () => {
    console.log('启动成功， 访问  http://localhost:3000');
})