怎么没反应呢？求大神
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>浏览器对象</title>
<script type="text/javascript">
function openWindon(){
if(confirm("确定打开新窗口吗？")){
var url = prompt("请输入一个网址","http://www.imooc.com/");
window.open( url,"_blank","toolbar=no, menubar=no, scrollbars=yes, width=400, height=400");
}
}
</script>
</head>
<body>
<input type="button" value="新窗口打开网站" onclick="openWindow()" />
</body>
</html>
