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利用javascript如何隨機生成一定位數(shù)的密碼

前言

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本文主要給大家介紹了關(guān)于利用javascript隨機生成一定位數(shù)密碼的相關(guān)內(nèi)容，分享出來供大家參考學(xué)習(xí)，下面話不多少，來一起看看詳細(xì)的介紹吧。

需求

隨機生成一定位數(shù)的密碼，有最小個數(shù)和最大個數(shù)，必須包含數(shù)字、大小寫字母，和特殊字符比如（- _ #）；

代碼

function createPassword(min,max) {
 //可以生成隨機密碼的相關(guān)數(shù)組
 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);

 //先放入一個必須存在的
 var arr = [];
 arr.push(getOne(num));
 arr.push(getOne(english));
 arr.push(getOne(ENGLISH));
 arr.push(getOne(special));

 //獲取需要生成的長度
 var len = min + Math.floor(Math.random()*(max-min+1));

 for(var i=4; i

使用

傳入一個生成的密碼的最小位數(shù)，和最大位數(shù)，即可返回一個隨機密碼