js-wrench/dist/modules/getVerifyCode.js

JS函数库

/**
 * @description 获取随机验证码
 *
 * @param {number} [len=4] 默认长度是4位
 * @return {*}  {string} 返回一个[len]长度的随机字符串
 * @example getVerifyCode(4) => 4sGa
 */
const getVerifyCode = (len = 4) => {
    let strAll = 'azxcvbnmsdfghjklqwertyuiopZXCVBNMASDFGHJKLQWERTYUIOP0123456789';
    let newStr = '';
    for (let i = 0; i < len; i++) {
        let index = Math.floor(Math.random() * strAll.length);
        newStr += strAll.charAt(index);
    }
    return newStr;
};
export default getVerifyCode;