js实现复制文本内容到剪切板

<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(‘复制成功’);
}
</script>
<div cols=”20″ id=”biao1″>12345678</div>
<input type=”button” onClick=”copyUrl2()” value=”点击复制代码” />