Use js to realize the code of click and copy function
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>点击复制功能的实现</title>
</head>
<body>
<script type="text/javascript">
function copyUrl2() {
var Url2 = document.getElementById("qipa250");
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>用户定义的代码区域
<!-- <textarea cols="20" rows="10" id="qipa250">www.qipa250.com</textarea>
-->
<input type="text" id="qipa250" value="http://www.qipa250.com">
<input type="button" onClick="copyUrl2()" value="点击复制代码" />
</body>
</html>