点击按钮，没有出现对话框，然后按钮就消失了。。不懂
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>我们互动下</title>
<script type="text/javascript">
function open()
{
alert("关注JS高级篇");
}
</script>
</head>
<body>
<input name="button666" type="button" onClick="open()" value="点击我，弹出对话框"/>
</body>
</html>
