新窗口打不开,请问是哪里出问题了呢?求大佬指正
<!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 yi=confirm("确认打开网页?");
if(yi==true)
{window.open('https://www.imooc.com/',"_blank","width=400,height=500,menubar=no,toolbar=no")};
else
{alert("打开失败")};
};
</script>
</head>
<body>
<input type="button" value="新窗口打开网站" onclick="openWindow()" />
</body>
</html>