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前言
本文主要給大家介紹了關于利用javascript隨機生成一定位數密碼的相關內容，分享出來供大家參考學習，下面話不多少，來一起看看詳細的介紹吧。
需求
隨機生成一定位數的密碼，有最小個數和最大個數，必須包含數字、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數組
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<len; i++){
//從數組里面抽出一個
arr.push(config[Math.floor(Math.random()*config.length)]);
}
//亂序
var newArr = [];
for(var j=0; j<len; j++){
newArr.push(arr.splice(Math.random()*arr.length,1)[0]);
}
//隨機從數組中抽出一個數值
function getOne(arr) {
return arr[Math.floor(Math.random()*arr.length)];
}
return newArr.join("");
}
使用
傳入一個生成的密碼的最小位數，和最大位數，即可返回一個隨機密碼
console.log(createPassword(8,15));
總結
以上就是這篇文章的全部內容了，希望本文的內容對大家的學習或者工作能帶來一定的幫助，如果有疑問大家可以留言交流，謝謝大家對億速云的支持。
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