js如何随机生成密码生成

js如何随机生成指定长度的复杂密码，下面web建站小编给大家简单介绍一下实现代码！

具体代码如下：

var chars = "0123456789abcdefghijklmnopqrstuvwxyz!@#$%^&*()ABCDEFGHIJKLMNOPQRSTUVWXYZ";
var passwordLength = 17;
var password = "";
for (var i = 0; i <= passwordLength; i++) {
  var randomNumber = Math.floor(Math.random() * chars.length);
  password += chars.substring(randomNumber, randomNumber +1);
}
console.log('生成18位随机密码：', password)