<!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 onepage=confirm("确认打开新窗口吗");
if(onepage==true)
{ var url=prompt("通过输入对话框，确定打开的网址","http://www.imooc.com/")；
if(url!=null)
{ window.open("url","_blank","width=400","height=500","menubar=no","toolbar=no");
}
else
{alert("byebye!感谢使用");}
}
else
{alert("byebye!感谢使用");}
}
</script>
</head>
<body>
<input type="button" value="新窗口打开网站" onclick="openWindow()" />
</body>
</html>
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