                        课程
                    
                        /前端开发
                        
                            /JavaScript
                        
                        /JavaScript入门篇

这个是最标准的答案

<!DOCTYPE html>
<html>
<head>
<title> new document </title>
<meta http-equiv="Content-Type" content="text/html; charset=gbk"/>
<script type="text/javascript">
    function openWindow(){
        var yourconfirm = confirm("是否打开");
        if(yourconfirm==true){
            var yourprompt = prompt("你的网址"," http://www.imooc.com/")
            if (yourprompt != null){
            window.open(yourprompt,"blank","width=400,height=500,menubar=no,toolbar=no")}
            }
            }

</script>
</head>
<body>
      <input type="button" value="新窗口打开网站" onclick="openWindow()" />
</body>
</html>