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源码
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<script>
var str='0123456789abcdefjhegklmnopqrstuvwxyz';
var password=' ';
var n=prompt("请输入要生成的密码的位数" );
// alert("生成密码为：");
for(var i=0;i<n;i++){
var k=Math.random()*36;
var a=Math.floor(k);
password+=str[a];
}
alert("生成密码为："+password);
</script>
</body>
</html>