javascript技巧

关注公众号 jb51net

关闭
首页 > 网络编程 > JavaScript > javascript技巧 > javascript随机生成一定位数密码

利用javascript如何随机生成一定位数的密码

作者:专注前端30年

这篇文章主要给大家介绍了关于利用javascript如何随机生成一定位数的密码的相关资料,文中给出了详细的示例代码,对大家的学习或者工作具有一定的参考学习价值,需要的朋友们下面随着小编来一起学习学习吧。

前言

本文主要给大家介绍了关于利用javascript随机生成一定位数密码的相关内容,分享出来供大家参考学习,下面话不多少,来一起看看详细的介绍吧。

需求

随机生成一定位数的密码,有最小个数和最大个数,必须包含数字、大小写字母,和特殊字符比如(- _ #);

代码

function createPassword(min,max) {
 //可以生成随机密码的相关数组
 var num = ["0","1","2","3","4","5","6","7","8","9"];
 var english = ["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"];
 var ENGLISH = ["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"];
 var special = ["-","_","#"];
 var config = num.concat(english).concat(ENGLISH).concat(special);

 //先放入一个必须存在的
 var arr = [];
 arr.push(getOne(num));
 arr.push(getOne(english));
 arr.push(getOne(ENGLISH));
 arr.push(getOne(special));

 //获取需要生成的长度
 var len = min + Math.floor(Math.random()*(max-min+1));

 for(var i=4; i<len; i++){
  //从数组里面抽出一个
  arr.push(config[Math.floor(Math.random()*config.length)]);
 }

 //乱序
 var newArr = [];
 for(var j=0; j<len; j++){
  newArr.push(arr.splice(Math.random()*arr.length,1)[0]);
 }

 //随机从数组中抽出一个数值
 function getOne(arr) {
  return arr[Math.floor(Math.random()*arr.length)];
 }

 return newArr.join("");
 }

使用

传入一个生成的密码的最小位数,和最大位数,即可返回一个随机密码

console.log(createPassword(8,15));

总结

以上就是这篇文章的全部内容了,希望本文的内容对大家的学习或者工作能带来一定的帮助,如果有疑问大家可以留言交流,谢谢大家对脚本之家的支持。

您可能感兴趣的文章:
阅读全文