[https://www.jb51.net/article/135605.htm js復制問題](https://www.jb51.net/article/135605.htm)
```
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<textarea cols="20" rows="10" id="biao1">用戶定義的代碼區域</textarea>
<input type="button" onClick="copyUrl2()" value="點擊復制代碼" />
<script type="text/javascript">
function copyUrl2()
{
var Url2=document.getElementById("biao1");
Url2.select(); // 選擇對象
document.execCommand("Copy"); // 執行瀏覽器復制命令
alert("已復制好，可貼粘。");
}
</script>
</body>
</html>
```
