                        課程
                    
                        /前端開發
                        
                            /JavaScript
                        
                        /JavaScript入門篇

我這樣做符合要求嗎

<!DOCTYPE?html>
<html>
<head?lang="en">
????<meta?charset="UTF-8">
????<title></title>
????<script?type="text/javascript">
????????function?openWindow(){
????????????var?url="http://www.xianlaiwan.cn/"
?var?open?=?prompt("是否確認新增窗口打開新的網站？",url);
?if(open==url){
????????????????????window.open("http://www.xianlaiwan.cn/",'_blank','width=400,height=500,menubar=yes,topbar=yes');
?}
????????????????else{
????????????????????alert("退出");
????????????????}
????????}
????</script>
</head>
<body>
<input?name="button"?type="button"?onclick="openWindow()"?value="點擊打開新窗口"/>
</body>
</html>