没有弹出新窗口
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>window对象</title>
<script type="text/javascript">
function op(){
var a = confirm("欢迎━(*｀∀´*)ノ来到慕课网，点击【确定】一起嗨!");
if(a == true){
window.open('https://www.imooc.com','_blank','width=600px,height=400px');
}
else{
return;
}
}
</script>
</head>
<body>
<form>
<input type="button" value="点击我，打开新窗口" onclick="op()"/>
</form>
</body>
</html>
