js随机将数组赋值到标签里并实现点击复制

数组
<script>

var Arr = ["内容1","内容2"];  //多个内容依次添加
var n = Math.floor(Math.random() * Arr.length); 

</script>
标签

<p style="color:#EEEEEE" cols="20" id="biao1">

<script>document.write(Arr[n]);</script>
</p>

复制

<script type="text/javascript">

function copyUrl2()

{
    var Url2=document.getElementById("biao1").innerText;
    var oInput = document.createElement('input');
    oInput.value = Url2;
    document.body.appendChild(oInput);
    oInput.select(); // 选择对象
    document.execCommand("Copy"); // 执行浏览器复制命令
    oInput.className = 'oInput';
    oInput.style.display='none';
    alert('您已成功复制！');
}

</script>