如题，记录一道前端笔试题
代码：
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>test</title>
</head>
<body>
<div>
<input type="button" id ="button1" value="1" onclick="moveBtn(this);">
<input type="button" id ="button2" value="2" />
</div>
<script type="text/javascript">
function moveBtn(obj) {
var clone = obj.cloneNode(true);
var parent = obj.parentNode;
parent.appendChild(clone);
parent.removeChild(obj);
}
</script>
</body>
</html>
效果截屏：
点击前
点击后
