wutiaoyu-captcha/index.js

svg-captcha

/**
 * 随机生成验证码
 * @returns object
 * @author wutiaoyu
 */
function create()
{   
    let text = ''
    let str = '0123456789abcdefghijklmnopqrsTuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
    for(let i=1;i<=4;i++) text+=str[Math.floor(Math.random()*(str.length))]
    return {
        text,
        data:`<svg xmlns="http://www.w3.org/2000/svg" version="1.1"
        xmlns:xlink="http://www.w3.org/1999/xlink">
        <rect width="100" height="50"
        style="fill:rgb(255, 122, 230)"/>
           <defs>
            <path id="path1" d="M30,30 a1,0 0 0,0 50,0" />
          </defs>
          <text x="1" y="1" style="fill:red;">
            <textPath xlink:href="#path1">${text}</textPath>
          </text>
        </svg>`
    }
}

module.exports = {
    create,
}