<style>
*{
margin:0;
padding: 0;
}
.content{
display: flex;
align-items: center;
}
.grid{
list-style-type: none;
display: table;
}
.grid li{
display: table-cell;
padding: 4px 8px;
border: 1px solid #000;
}
</style>
</head>
<body>
<p>利用定时器 制作动态的密码</p>
<div class="content">
<strong>当前动态密钥:</strong>
<ul class="grid">
<li>0</li>
<li>0</li>
<li>0</li>
<li>0</li>
<li>0</li>
<li>0</li>
</ul>
</div>
<script>
var lis = document.getElementsByTagName("li");
setInterval(setTime,1000)
function setTime(){
for(var i=0;i<lis.length;i++){
var rum = parseInt(Math.random() * 10);
lis[i].innerHTML = rum
}
}
</script>
</body>