js复制功能

<div id="cardList"><div class="btn" onClick="copy(111)">点击我，复制我</div></div>
<script type="text/javascript">   function copy(str){var save = function (e){e.clipboardData.setData('text/plain',str);e.preventDefault();}document.addEventListener('copy',save);document.execCommand("copy");alert("复制成功");}
</script>

 

<textarea cols="20" rows="10" id="biao1">用户定义的代码区域</textarea>
<input type="button" onClick="copyUrl2()" value="点击复制代码" />
<script type="text/javascript">
function copyUrl2()
{
var Url2=document.getElementById("biao1");
Url2.select(); // 选择对象
document.execCommand("Copy"); // 执行浏览器复制命令
alert("已复制好，可贴粘。");
}
</script>

 

<div cols="20" id="biao1">12345678dddd</div>
<input type="button" onClick="copyUrl2()" value="点击复制代码" />
<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(); document.execCommand("Copy"); oInput.style.display='none';alert('复制成功');}
</script>