<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>test</title>
</head>
<body>
<input type="text" class="share-input" value="http://www.youtube.com" id="copy-content"/>
<button class="copy-button" type="button" onclick="copyContent();"> 复制 </button>
</body>
<script type="text/javascript">
/*Copy function implementation */
function copyContent(){
var copyobject=document.getElementById("copy-content");
copyobject.select();
document.execCommand("Copy");
alert("已复制成功哦~");
};
</script>
</html>