webopenyeye-svg-captcha/captcha.js

svg-captcha

function create() {
    let str = '123456789'
    let one = Math.floor(Math.random() * (str.length - 1 - 0 + 1) + 0)
    let two = Math.floor(Math.random() * (str.length - 1 - 0 + 1) + 0)
    let three = Math.floor(Math.random() * (str.length - 1 - 0 + 1) + 0)
    let four = Math.floor(Math.random() * (str.length - 1 - 0 + 1) + 0)
    let text = '' + str[one] + str[two] + str[three] + str[four]

    
    return {
        text,
        data: `<svg xmlns="http://www.w3.org/2000/svg" version="1.1">
    <defs>
        <filter id="f1" x="0" y="0">
          <feGaussianBlur in="SourceGraphic" stdDeviation="18" />
        </filter>
      </defs>
      <rect width="100" height="100" stroke="skyblue" stroke-width="1"
      fill="red" filter="url(#f1)" />  
    <text x="30" y="65" fill="#ff9800" font-size="30px">${text}</text>
  </svg>`
    }
}
module.exports = {
    create,
}