算法—JS生成随机密码_输入一个正整数n,输出随机生成的n位密码字符串,要求每个密码字符只能是英文字母、-优快云博客

本文链接：https://blog.youkuaiyun.com/apple_2021/article/details/101075111

题目：

输入一个正整数n，生成n个随机密码，其中包括数字，大小写字母。

代码：

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
    div{
        width: 300px;
        height: 100px;
        background-color: lightblue;
        overflow: auto;
    }
    </style>
</head>
<body>
    <input type="text">
    <button>生成</button>
    <div class="end"></div>
    <script>
    var oTn = document.getElementsByTagName("input")[0];
    var oBtn = document.getElementsByTagName("button")[0];
    var oDiv = document.querySelector(".end");
    var password = ["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","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","0","1","2","3","4","5","6","7","8","9"
    ]; 
    function pass(length){
        var Str = "";
        for(var i = 0 ; i<length;i++){
            Str += password[Math.floor(Math.random()*password.length)];
        }
        return Str;
    }
    oBtn.onclick = function(){
        oDiv.innerHTML = pass(oTn.value);
    }
    </script>
</body>
</html>