救救孩子 为什么出不开框!
<!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=confirm('确认新建窗口打开网页么?');
if(open==true){var url=prompt('通过输入对话框,打开新网页',' http://www.imooc.com');
if(nul!=null)
{window.open(url,'_blank','width=400px,height=500px,menubar=no,toolbar=no');}
else{alert('再见!');}
}
else{alert('再见!');}
}
</script>
</head>
<body>
<input type="button" value="新窗口打开网站" onclick="openWindow()" />
</body>
</html>