随机生成验证码
const createCode = obj =>{
let code = "";
let codeLength = obj.numb||4; //验证码的长度 默认4
let random = new Array(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, ‘A‘, ‘B‘, ‘C‘, ‘D‘, ‘E‘, ‘F‘, ‘G‘, ‘H‘, ‘I‘, ‘J‘, ‘K‘, ‘L‘, ‘M‘, ‘N‘, ‘O‘, ‘P‘, ‘Q‘, ‘R‘,
‘S‘, ‘T‘, ‘U‘, ‘V‘, ‘W‘, ‘X‘, ‘Y‘, ‘Z‘); //随机数
for(let i = 0; i < codeLength; i++) { //循环操作
let index = Math.floor(Math.random() * 36); //取得随机数的索引(0~35)
code += random[index]; //根据索引取得随机数加到code上
}
return code; //把code值赋给验证码
}