代码优化系列之生成一个指定长度的随机字符串 about blog

[itkasumy]

https://mp.weixin.qq.com/s/3XmJB4W_5gsObD6jfrPDnw

[itkasumy]

https://www.cnblogs.com/xiaohuochai/p/7222227.html

[itkasumy]

借助toString()生成36进制生成指定长度的字母数字组合

function generateRandomAlphaNum(len) {
    var rdmString = "";
    for( ; rdmString.length < len; rdmString  += Math.random().toString(36).substr(2));
    return  rdmString.substr(0, len);
}

[itkasumy]

改为函数式编程，去掉for循环

function gRdmStr(len, rdmStr='') {
    rdmStr  += Math.random().toString(36).substr(2)
    return rdmStr.length < len ? gRdmStr(len, rdmStr) : rdmStr.substr(0, len);
}