wyb-svg-captcha/wyb.js

这是一个获取验证码小工具

/**
 * 随机生成验证码
 * @returns Object
 */
function create(width=50,height=20,bccolor=(57,91,155),bordercolor=(47,14,72),color='cyan'){
    let str = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
    let one = Math.floor(Math.random()*(str.length-1-0)+1)
    let two = Math.floor(Math.random()*(str.length-1-0)+1)
    let three = Math.floor(Math.random()*(str.length-1-0)+1)
    let four = Math.floor(Math.random()*(str.length-1-0)+1)
    let text=''+str[one]+str[two]+str[three]+str[four]
    return{
        text,
        data:`<svg xmlns="http://www.w3.org/2000/svg" version="1.1">
        <rect width="${width}" height="${height}" style="fill:rgb${bccolor};stroke-width:1;stroke:rgb${bordercolor}" />
        <text x="0" y="15" fill="${color}">${text}</text></svg>`
    }
}

module.exports = {
    create,    
}